Fire suppression device, electrical equipment and energy storage system

Abstract

The present application provides a fire suppression device, electrical equipment and energy storage system. The fire suppression device includes a shell, a spray nozzle and a gas sensor. The shell has a reagent chamber, which is used to hold fire-fighting agents. The spray nozzle is connected to the reagent chamber and is used to spray the fire-fighting agent out of the reagent chamber. Therefore, when a fire occurs or before a fire occurs, the spray nozzle can be activated to spray the fire-fighting agent to extinguish the fire, thereby suppressing the fire and reducing losses. The gas sensor is installed on the outer wall of the shell to monitor whether the concentration of the fire-fighting agent outside the shell exceeds the standard. When the fire-fighting agent leaks, it can be detected by the gas sensor, so that personnel can repair or replace the fire suppression module in the electrical equipment to prevent the fire suppression module from failing or the fire extinguishing ability from failing to meet the standard. This solution can timely monitor the leakage of the fire suppression device, ensure the fire extinguishing ability of the fire suppression module, and improve the safety of the electrical equipment.

Description

Technical Field

[0001] The present application relates to the technical field of fire-fighting devices, and in particular to a fire suppression device, electrical equipment and energy storage system. Background Art

[0002] Since the advent of batteries, they have brought great changes to people's lives. From small portable electronic devices (such as smartphones, smart watches, tablets and laptops) to large mobile devices (such as electric cars, electric trucks and electric ships), they all rely on the energy provided by batteries to operate. Different application scenarios have different requirements for battery capacity and voltage, and unit batteries usually work in series and parallel.

[0003] For example, in electric vehicles, electric trucks and electric ships, since the amount of electricity required in such scenarios can reach tens to hundreds of KWh, and the voltage often reaches hundreds to thousands of volts, several unit batteries are first connected in series and parallel to form a battery pack with a certain capacity.

[0004] The battery pack has the potential to catch fire, and also poses a safety hazard to the equipment using the battery pack. Therefore, quickly extinguishing the fire after the battery pack catches fire can improve the safety of the battery pack. Summary of the invention

[0005] The present application provides a fire suppression device, electrical equipment and energy storage system, which timely monitor the leakage of the fire suppression device, ensure the fire extinguishing capability of the fire suppression module, and improve the safety of the electrical equipment.

[0006] In the first aspect, the present application provides a fire suppression device, which includes a shell, a spray port and a gas sensor. The shell has a reagent chamber, which is used to hold a fire-fighting agent. The spray port is connected to the reagent chamber and is used to spray the fire-fighting agent out of the reagent chamber. Therefore, when a fire occurs or before a fire occurs, the spray port can be activated to spray the fire-fighting agent to extinguish the fire, thereby suppressing the fire and reducing losses. The gas sensor is installed on the outer wall of the shell to monitor whether the concentration of the fire-fighting agent outside the shell exceeds the standard. The fire-fighting agent sprayed from the spray port is gas. When the fire-fighting agent leaks, the fire-fighting agent leaked to the outside is also in a gas state. Therefore, when the fire-fighting agent leaks, it can be detected by the gas sensor, so that personnel can repair or replace the fire suppression module in the electrical equipment to prevent the fire suppression module from failing or the fire extinguishing ability from failing to meet the standard. This solution can timely monitor the leakage of the fire suppression device, ensure the fire extinguishing ability of the fire suppression module, and improve the safety of the electrical equipment.

[0007] When the gas sensor is specifically set, the distance between the gas sensor and the vent is less than the first preset distance. Since the vent is most prone to leakage, the smaller the distance between the gas sensor and the vent, the more conducive it is for the gas sensor to quickly and accurately detect leakage in the fire suppression device and handle it in time.

[0008] The fire suppression device may further include a controller, and the gas sensor is connected to the controller. The controller is used to receive a signal from the gas sensor, and when the gas sensor indicates that the concentration of the fire-fighting agent outside the housing exceeds the standard, the controller is also used to send an alarm signal. Personnel can inspect or replace the fire suppression module in the electrical equipment according to the alarm signal.

[0009] The present application does not limit the manner in which the alarm signal is issued. For example, in one technical solution, the fire suppression device may further include an alarm. The alarm is also connected to the controller, and the alarm receives the alarm signal issued by the controller and issues an alarm according to the alarm signal. Specifically, the alarm may include a buzzer and / or a warning light.

[0010] The fire suppression device may further include a heat sensitive wire. The heat sensitive wire is used to detect whether the temperature exceeds a preset temperature. When the temperature exceeds the preset temperature, it can be considered that a fire has occurred. At this time, the spray port can be activated to spray fire-fighting agents to extinguish the fire.

[0011] In the second aspect, the present application also provides an electrical device, which includes a housing, a fire suppression device and a gas sensor. The housing has a receiving cavity, and the fire suppression device and the gas sensor are arranged in the receiving cavity. The fire suppression device includes a housing and an ejection port. The housing has a reagent bin, which is used to contain fire-fighting agents. The ejection port is connected to the reagent bin and is used to eject the fire-fighting agents out of the reagent bin. The gas sensor is used to monitor whether the concentration of the fire-fighting agent in the receiving cavity exceeds the standard. When the fire-fighting agent leaks, the concentration of the fire-fighting agent in the receiving cavity exceeds the standard, which can be detected by the gas sensor. Thus, personnel can inspect or replace the fire suppression module in the electrical equipment to prevent the fire suppression module from failing or the fire extinguishing capability from failing to meet the standard. Thus, the fire extinguishing capability of the fire suppression module is ensured and the safety of the electrical equipment is improved.

[0012] The electrical device also includes a controller. The gas sensor is connected to the controller, and the controller is used to receive a signal from the gas sensor. When the gas sensor indicates that the concentration of the fire-fighting agent outside the housing exceeds the standard, the controller is also used to send an alarm signal. Personnel can inspect or replace the fire suppression module in the electrical device according to the alarm signal.

[0013] The present application does not limit the manner in which the alarm signal is issued. For example, in one technical solution, the electrical device may further include an alarm. The alarm is also connected to the controller, and the alarm receives the alarm signal issued by the controller and issues an alarm according to the alarm signal. Specifically, the alarm may include a buzzer and / or a warning light.

[0014] The electrical device also includes a circuit board, and the controller and the gas sensor are arranged on the circuit board. When the electrical device includes an alarm, the alarm can also be arranged on the circuit board or electrically connected to the circuit board. This solution can simplify the structure of the electrical device.

[0015] The electrical device may further include a thermal line. The thermal line is disposed in the housing chamber of the electrical device and is used to detect whether the temperature in the housing chamber exceeds a preset temperature. When the temperature exceeds the preset temperature, it can be considered that a fire has occurred. At this time, the ejection port of the fire suppression device can be activated to eject a fire-fighting agent to extinguish the fire.

[0016] The electrical equipment may include one, two or more fire suppression devices, which may be selected according to the size of the electrical equipment to ensure the fire extinguishing capability of the electrical equipment in the event of a fire. When the electrical equipment includes at least two fire suppression devices, it may include at least one gas sensor. In other words, the fire suppression devices and gas sensors may not be in a one-to-one correspondence.

[0017] There is no limitation on the location of the gas sensor. In one technical solution, the gas sensor can be arranged on the outer wall of the shell of the fire suppression module. In another technical solution, the gas sensor can also be arranged on the inner wall of the shell. In short, as long as the gas sensor is arranged in the above-mentioned accommodation cavity of the electrical equipment, it will be fine.

[0018] Specifically, the gas sensor can be set at a location where fire is likely to occur. For example, when the gas sensor is set, the distance between the gas sensor and the ejection port can be less than a first preset distance. This solution is conducive to the gas sensor to quickly and accurately detect the leakage of the fire suppression device and to deal with it in time.

[0019] The specific type of the electrical equipment in the technical solution of the present application is not limited. For example, the electrical equipment may be a battery pack, a power distribution cabinet, a power exchange cabinet or a vehicle-mounted device. Specifically, it may be a relatively small electrical equipment.

[0020] In order to ensure that the gas sensor can quickly detect the leakage, the sealing performance of the housing cavity of the above-mentioned electrical equipment is at least IP20. Therefore, when the fire-fighting agent of the fire suppression device leaks, it can be stored in the housing cavity and will not quickly spread from the housing cavity to the outside, so that the gas sensor can quickly and accurately detect the leakage of the fire-fighting agent in the fire suppression device.

[0021] In a third aspect, the present application also provides an energy storage system. The energy storage system includes a power converter and an electrical device in any of the above embodiments. The power converter is electrically connected to the electrical device and is used to convert the current input to the electrical device; alternatively, the power converter can also be used to convert the current output from the electrical device; alternatively, the power converter can also be used to convert the current input to the electrical device and to convert the current output from the electrical device. The gas sensor in the energy storage system can timely monitor the leakage of the fire suppression device, ensure the fire extinguishing capability of the fire suppression module, improve the safety of the electrical equipment, and improve the safety of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of an electrical device in an embodiment of the present application;

[0023] Figure 2 Another structural schematic diagram of the electrical device in the embodiment of the present application;

[0024] Figure 3 Another structural schematic diagram of the electrical device in the embodiment of the present application;

[0025] Figure 4 It is a structural schematic diagram of a fire suppression device in an embodiment of the present application.

[0026] Reference numerals:

[0027] 1- Shell;

[0028] 11-accommodating chamber;

[0029] 2- Fire suppression devices;

[0030] 21-housing;

[0031] 22- Eruption vent;

[0032] 3- Gas sensor;

[0033] 4-Electrical components;

[0034] 5- Circuit board;

[0035] 6-Thermal wire;

[0036] 7- Controller;

[0037] 8-Mounting seat. DETAILED DESCRIPTION

[0038] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context.

[0039] References to "one embodiment" or "a specific embodiment" in this specification mean that one or more embodiments of the present application include a particular feature, structure or characteristic described in conjunction with the embodiment. The terms "include", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0040] In order to facilitate the understanding of the fire suppression device, electrical equipment and energy storage system provided in the embodiments of the present application, the application scenarios are first introduced below. During the use of electronic equipment, a power supply device is usually required to power it. At present, various electronic devices, such as energy storage base stations and electric vehicles, can usually choose a battery pack formed by secondary batteries such as lithium-ion batteries, lead-acid batteries, sodium batteries, magnesium batteries, aluminum batteries and potassium batteries as a power supply device. Among them, in the embodiments of the present application, a secondary battery (rechargeable battery) is also called a rechargeable battery, a power battery or a storage battery, and specifically refers to a battery that can be activated by charging the active material after the battery is discharged and continues to be used. The battery may catch fire due to short circuits and other reasons during use. For this reason, it is of great significance to quickly extinguish the fire after the battery pack catches fire to ensure the safety of electronic equipment with the battery.

[0041] Of course, in addition to battery packs, other types of electrical equipment also have the risk of fire. When electrical equipment catches fire, it is equally important to extinguish the fire quickly.

[0042] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0043] Figure 1 is a structural schematic diagram of an electrical device in an embodiment of the present application, such as Figure 1As shown, the electrical device includes a housing 1, a fire suppression device 2 and a gas sensor 3. The housing 1 includes a receiving chamber 11, which is used to set the electrical device 4. In addition, the fire suppression device 2 and the gas sensor 3 are arranged in the receiving chamber 11. The fire suppression device 2 includes a shell 21 and a spray port 22, wherein the shell 21 has a reagent chamber, and the reagent chamber is used to hold a fire-fighting agent, which can be used to extinguish a fire. The spray port 22 is connected to the reagent chamber, and the fire-fighting agent in the reagent chamber can be sprayed out. Therefore, when the electrical device 4 in the receiving chamber 11 of the electrical device catches fire, the spray port 22 sprays the fire-fighting agent in the reagent chamber to quickly extinguish the fire of the electrical device and reduce losses. The gas sensor 3 is used to monitor whether the concentration of the fire-fighting agent in the receiving chamber 11 exceeds the standard. When the concentration of the fire-fighting agent in the accommodating chamber 11 exceeds the standard, it can be considered that the fire suppression module is leaking, and personnel can repair or replace the fire suppression module in the electrical equipment to prevent the fire suppression module from failing or the fire extinguishing ability from failing to meet the standard, thereby ensuring the fire extinguishing ability of the fire suppression module and improving the safety of the electrical equipment.

[0044] Since the fire suppression device 2 is arranged inside the electrical equipment and the size of the fire suppression device 2 is small, it is usually fixed and installed by connecting structural parts such as screws or adhesive, so it is difficult to use a gravity meter to detect whether the fire suppression device 2 has a leakage problem. In addition, the fire suppression device has a built-in normal pressure fire extinguishing agent, so it is also impossible to use a pressure gauge to detect whether the fire suppression device 2 has a leakage problem. The gas sensor 3 in the embodiment of the present application is small in size and does not need to cooperate with the fire suppression device 2 for detection. It can be applied to electrical equipment of smaller size and can be moved with the electrical equipment.

[0045] In order to improve the reliability and timeliness of the gas sensor 3 monitoring whether there is leakage in the fire suppression device 2, the accommodating cavity 11 may have a certain sealing property.

[0046] Specifically, the sealing performance of the above-mentioned accommodating cavity meets the IP (ingress protection) level of at least IP20, thereby reducing the diffusion of the fire-fighting agent in the accommodating cavity, which is beneficial to shortening the time for the gas sensor 3 to detect the leakage of the fire suppression device, and is also beneficial to improving the accuracy of the gas sensor 3 detecting the leakage of the fire suppression device. For example, the sealing performance of the above-mentioned accommodating cavity meets the IP level of IP21, IP25, IP27, IP30, IP32, IP35, IP40, IP42, IP45, IP50, IP53, IP57, IP60, IP61, IP63, IP65, IP66 or IP67, etc. Further, the sealing performance of the above-mentioned accommodating cavity can meet the IP level greater than IP55.

[0047] The specific type of the electrical device in the embodiment of the present application is not limited. For example, the electrical device may be a battery pack (also referred to as a battery box), and the electrical device 4 in the accommodating cavity 11 may be a unit battery. In addition, the electrical device may also be a power distribution cabinet, a power exchange cabinet, or a vehicle-mounted device, which are not listed here one by one.

[0048] In addition, in a specific embodiment, the above-mentioned medicine chamber includes a first medicine chamber and a second medicine chamber, wherein the first medicine chamber is used to contain a gas-generating agent, and the second medicine chamber is used to contain a fire-fighting agent. When fire extinguishing is required, the gas-generating agent causes the fire-fighting agent to be ejected in a gaseous state to extinguish the fire.

[0049] The specific type of the fire-fighting agent in the above-mentioned agent warehouse is not limited. For example, the fire-fighting agent can be a halogen gas, and the gas sensor 3 can be a halogen sensor. Specifically, the above-mentioned halogen gas can be perfluorohexanone or heptafluoropropane, etc., which are not listed one by one in this application. Alternatively, the above-mentioned fire-fighting agent can also be doped with an identification gas, and the corresponding gas sensor 3 can be a gas sensor 3 for monitoring the concentration of the above-mentioned identification gas. Specifically, the above-mentioned identification gas can be carbon monoxide (CO), hydrogen (H2), volatile organic compounds (volatile organic compounds, VOC) or hydrogen sulfide (H2S), etc.

[0050] The above-mentioned accommodating chamber 11 is also provided with a thermistor 6, which is used to detect whether the temperature in the accommodating chamber 11 exceeds a preset temperature. When the electrical equipment catches fire, the temperature in the accommodating chamber 11 will rise, and the thermistor 6 can detect that the temperature in the accommodating chamber 11 exceeds the preset temperature, thereby sending a signal to activate the fire suppression device 2, and the spray port 22 of the fire suppression device 2 sprays a fire-fighting agent to extinguish the fire.

[0051] The specific location of the thermal line 6 in the above embodiment is not limited, and the thermal line 6 can be installed at a suitable location according to needs, for example, it can be installed on the inner wall of the accommodating cavity 11, the electrical device 4 or the fire suppression device 2.

[0052] In the embodiment of the present application, the electrical device may further include a controller, which is connected to the gas sensor 3 and is used to receive a signal from the gas sensor 3. When the fire suppression device 2 leaks and the concentration of the fire-fighting agent in the accommodating chamber 11 exceeds the standard, the gas sensor 3 detects that the concentration of the fire-fighting agent in the accommodating chamber 11 exceeds the standard. The signal of the gas sensor 3 received by the controller indicates that the concentration of the fire-fighting agent in the accommodating chamber 11 exceeds the standard, thereby issuing an alarm signal. This allows personnel to promptly inspect or replace the fire suppression module in the electrical device to prevent the fire suppression module from failing or the fire extinguishing capability from failing to meet the standard.

[0053] In a specific embodiment, when the electrical device is a battery pack, the electrical device may include a battery management unit (BMU), and the battery management unit may serve as the controller in the embodiment of the present application.

[0054] Or, in another embodiment, when the fire suppression device 2 leaks, the concentration of the fire-fighting agent in the accommodating chamber 11 exceeds the standard. The gas sensor 3 monitors the concentration of the fire-fighting agent in the accommodating chamber 11 and generates a concentration signal. In a specific embodiment, the concentration of the fire-fighting agent in the accommodating chamber can be understood as the concentration of the fire-fighting agent leaked from the fire suppression device. The signal from the gas sensor 3 received by the controller indicates the concentration of the fire-fighting agent in the accommodating chamber 11. The controller compares the concentration of the fire-fighting agent in the accommodating chamber 11 monitored by the gas sensor 3 with the preset concentration. When the concentration of the fire-fighting agent monitored by the gas sensor 3 is greater than the preset concentration, the controller sends an alarm signal. This allows personnel to promptly repair or replace the fire suppression module in the electrical equipment to prevent the fire suppression module from failing or the fire extinguishing capability from failing to meet the standard.

[0055] The specific manner of the alarm signal issued by the controller is not limited. Specifically, the electrical device may be provided with an alarm, such as a buzzer or a warning light. The controller is connected to the alarm, which receives the alarm signal issued by the controller and issues an alarm according to the received alarm signal. In other words, the controller controls the alarm to issue an alarm. Alternatively, the controller may include a wireless connection module, and the alarm signal is sent to a user's terminal, such as a mobile phone, a computer, or a display screen of a car, through the wireless connection module to alert the user.

[0056] In addition, the above-mentioned thermistor line 6 and fire suppression device 2 can also be connected to the controller respectively, and the controller can be used to control the start-up of the fire suppression device 2 according to the signal of the thermistor line 6, and the spray port 22 of the fire suppression device 2 sprays fire-fighting agents to extinguish fires.

[0057] Figure 2 Another structural diagram of the electrical device in the embodiment of the present application is shown in FIG. Figure 2 As shown, in a specific embodiment, the electrical device may further include a circuit board 5, and the controller 7 and the gas sensor 3 are arranged on the circuit board 5. Thus, the circuit board 5 may be used to connect the controller 7 and the gas sensor 3, simplifying the structure of the electrical device.

[0058] In addition, the alarm may also be arranged on the circuit board 5, and the circuit board 5 is used to connect the controller 7 and the alarm, thereby simplifying the structure of the electrical equipment.

[0059] When the gas sensor 3 is specifically arranged, the specific position of the gas sensor 3 is not limited, and the gas sensor 3 only needs to be arranged in the accommodating cavity 11. Figure 2 In the embodiment shown, the gas sensor 3 may be disposed on the circuit board 5; or Figure 1 In the embodiment shown, the gas sensor 3 can also be arranged on the inner wall of the accommodating chamber 11. Specifically, the inner wall of the accommodating chamber 11 can have a structural member, and the gas sensor 3 can be arranged by using the structural member; alternatively, the gas sensor 3 can also be arranged on the electrical device 4 of the accommodating chamber 11; alternatively, the gas sensor 3 can also be arranged on the outer wall of the shell of the fire suppression device 2.

[0060] Figure 3 Another structural diagram of the electrical device in the embodiment of the present application is shown in FIG. Figure 3 As shown, the number of fire suppression devices 2 and the number of gas sensors 3 provided in the accommodating chamber 11 in the embodiment of the present application are not limited. For example, in order to ensure the fire extinguishing capability of the electrical equipment, at least two fire suppression devices 2 may be provided in the accommodating chamber 11, and the number of fire suppression devices 2 to be provided may be determined specifically according to the fire extinguishing capability of the electrical equipment. At this time, at least one gas sensor 3 may be provided in the accommodating chamber 11, that is, the gas sensor 3 and the fire suppression device 2 may not be provided in a one-to-one correspondence. In this embodiment, when the gas sensor 3 detects that the concentration of the fire-fighting agent in the accommodating chamber 11 exceeds the standard, the personnel may respectively detect whether there is a leak in each fire suppression device 2, and replace or repair the fire suppression device 2; or all the fire suppression devices 2 may be replaced. Of course, the fire suppression device 2 and the gas sensor 3 may also be provided in a one-to-one correspondence.

[0061] In a specific embodiment, the gas sensors 3 can be evenly distributed in the accommodating cavity 11 according to requirements, or relatively dense gas sensors 3 can be arranged near the fire suppression device 2 (an area where gas leakage is likely to occur).

[0062] Specifically, when the gas sensor 3 is positioned above, the distance between the gas sensor 3 and the nozzle 22 of the fire suppression device 2 is less than the first preset distance. The fire suppression device 2 is most likely to leak near the nozzle 22. When a leak occurs, the concentration of the fire extinguishing agent near the nozzle 22 is higher. The smaller the distance between the gas sensor 3 and the nozzle 22, the more convenient it is for the gas sensor 3 to detect the leak of the fire suppression device 2 more quickly and accurately, so as to deal with it in time. The first preset distance can be determined based on the size of the actual electrical equipment, the amount of fire extinguishing agent in the fire suppression device 2, the sealing degree of the accommodating chamber 11, etc.

[0063] When the gas sensors 3 and the fire suppression devices 2 are not arranged one-to-one, the distance between the ejection port 22 of each fire suppression device 2 and the nearest gas sensor 3 can be made smaller than the first preset distance, so as to improve the speed and accuracy of the gas sensor 3 monitoring the leakage of the fire suppression device 2.

[0064] Figure 4 FIG. 1 is a schematic diagram of a structure of a fire suppression device in an embodiment of the present application. Figure 4 As shown, in one embodiment, the gas sensor 3 can be disposed in the housing 21 of the fire suppression device 2. The fire suppression device 2 and the gas sensor 3 in this solution are integrated into one body, and the modularization of the fire suppression device 2 can be achieved. Specifically, a mounting seat 8 can be disposed outside the housing 21, and the gas sensor 3 can be disposed on the mounting seat 8.

[0065] The alarm and controller 7 may also be arranged in the housing 21 of the fire suppression device 2 to enrich the functions of the fire suppression device 2 and improve the integration of the fire suppression device 2 .

[0066] Based on the same inventive concept, the present application also provides an energy storage system, which includes a power converter and an electrical device in any of the above embodiments. The power converter is electrically connected to the electrical device and is used to convert the current input to the electrical device; or, the power converter can also be used to convert the current output from the electrical device; or, the power converter can also be used to convert the current input to the electrical device and to convert the current output from the electrical device. The gas sensor in the energy storage system can timely monitor the leakage of the fire suppression device, ensure the fire extinguishing capability of the fire suppression module, improve the safety of the electrical equipment, and improve the safety of the energy storage system.

[0067] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electrical device, characterized in that: It comprises a shell, a fire suppression device and a gas sensor, wherein the shell has a containing cavity, the fire suppression device and the gas sensor are arranged in the containing cavity; the fire suppression device comprises a shell and a spraying port, the shell has a medicine bin, and the medicine bin is used to contain fire-fighting medicine; the spraying port is connected to the medicine bin, and is used to spray the fire-fighting medicine out of the medicine bin; the gas sensor is used to monitor whether the concentration of the fire-fighting agent in the containing cavity exceeds the standard.

2. The electrical device according to claim 1, characterized in that It also includes a controller, the gas sensor is connected to the controller, the controller is used to receive the signal of the gas sensor, when the gas sensor indicates that the fire fighting agent concentration outside the shell exceeds the standard, the controller is also used to send out an alarm signal.

3. The electrical device according to claim 2, characterized in that It also includes an alarm, which is connected to the controller, receives the alarm signal, and issues an alarm according to the alarm signal.

4. The electrical device according to claim 2 or 3, characterized in that: The electrical device further includes a circuit board, and the controller and the gas sensor are arranged on the circuit board.

5. The electrical device according to any one of claims 1 to 4, characterized in that: It also includes a thermosensitive wire, which is arranged in the accommodating cavity and is used to detect whether the temperature in the accommodating cavity exceeds a preset temperature.

6. The electrical device according to any one of claims 1 to 5, characterized in that: Includes at least two of the fire suppression devices, and at least one of the gas sensors.

7. The electrical device according to any one of claims 1 to 3, characterized in that: The gas sensor is disposed on an outer wall of a shell of the fire suppression module, or the gas sensor is disposed on an inner wall of the shell.

8. The electrical device according to any one of claims 1 to 7, characterized in that: The distance between the gas sensor and the ejection port is less than a first preset distance.

9. The electrical device according to any one of claims 1 to 8, characterized in that: The electrical equipment is a battery pack, a power distribution cabinet, a battery exchange cabinet or a vehicle-mounted device.

10. The electrical device according to any one of claims 1 to 9, characterized in that: The sealing performance of the accommodating cavity is at least IP20.

11. An energy storage system, characterized in that: The invention comprises a power converter and an electrical device as claimed in any one of claims 1 to 10, wherein the power converter is used to convert the current input to the electrical device and / or to convert the current output from the electrical device.

12. A fire suppression device, characterized in that: include: The housing has a medicine chamber, and the medicine chamber is used to contain fire fighting medicine; An ejection port is communicated with the agent bin and is used to eject the fire fighting agent out of the agent bin; The gas sensor is installed on the outer wall of the shell and is used to monitor whether the concentration of the fire-fighting agent outside the shell exceeds the standard.

13. The fire suppression device according to claim 12, characterized in that: The distance between the gas sensor and the ejection port is less than a first preset distance.

14. The fire suppression device according to claim 12 or 13, characterized in that: It also includes a controller, the gas sensor is connected to the controller, the controller is used to receive the signal of the gas sensor, when the gas sensor indicates that the fire fighting agent concentration outside the shell exceeds the standard, the controller is also used to send out an alarm signal.

15. The fire suppression device according to claim 14, characterized in that: It also includes an alarm, which is connected to the controller, receives the alarm signal, and issues an alarm according to the alarm signal.

16. The fire suppression device according to any one of claims 12 to 15, characterized in that: A thermosensitive wire is also included, and the thermosensitive wire is used to detect whether the temperature exceeds a preset temperature.

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