Nitrogen displacement fire suppression device

Abstract

The utility model relates to a nitrogen displacement fire suppression device, and belongs to the technical field of battery fire safety. Comprising a shell, an air purifier module is arranged on the shell, the air purifier module is communicated with a nitrogen separator arranged in the shell, an electrically connected host is arranged on one side of the nitrogen separator, and an electrically connected pressure detector is arranged on the host. The drying module and the filtering module are arranged in the air purifier module, so that air is dried, impurities are filtered out, and it is guaranteed that air input into the nitrogen separator is dry and free of suspensible particles; the waterproof ventilation valve is arranged on the shell, so that air pressure inside and outside the shell is balanced, air is isolated from entering the shell, and the environment protection level of the shell is achieved; by arranging the SIM card, all data information can be uploaded to the cloud processor in real time and finally transmitted to the mobile phone end, so that a user can check the data information in real time, and the system is more intelligent.

Description

Technical Field

[0001] The utility model relates to a nitrogen replacement fire suppression device, belonging to the technical field of battery fire safety. Background Art

[0002] Lithium batteries release a lot of heat during the charging and discharging process. When the temperature inside the battery pack exceeds the operating temperature, it is very easy to cause thermal runaway of the battery, resulting in fire or even explosion. Traditional water-based fire extinguishers or dry powder fire extinguishers have limited effect in suppressing fires caused by thermal runaway of lithium batteries, and are prone to cause battery short circuits or chemical corrosion. Nitrogen, as a colorless, odorless, chemically stable gas, has a high heat capacity and thermal conductivity, and has a good inhibitory effect on battery fires. Therefore, it is necessary to develop a nitrogen replacement fire suppression device. Utility Model Content

[0003] The utility model aims at the deficiencies in the prior art and provides a nitrogen replacement fire suppression device.

[0004] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. All other embodiments obtained by ordinary personnel in this field without making creative work belong to the protection scope of the utility model. The preferred implementation of the utility model will be described in more detail below with reference to the drawings. Although the preferred implementation of the utility model is shown in the drawings, it should be understood that the utility model can be implemented in various forms and should not be limited by the implementation described here. On the contrary, these implementations are provided to make the utility model more thorough and complete, and to fully convey the scope of the utility model to those skilled in the art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A nitrogen replacement fire suppression device comprises a shell, an air purifier module is arranged on the shell, the air purifier module is connected with a nitrogen separator arranged inside the shell, an electrically connected host is arranged on one side of the nitrogen separator, and an electrically connected pressure detector is arranged on the host.

[0007] Further, the air purifier module includes a drying module.

[0008] Furthermore, the air purifier module includes a filter module.

[0009] Furthermore, the shell is provided with a waterproof breathable valve for maintaining the balance of internal and external air pressure.

[0010] Furthermore, it also includes a SIM card for data transmission.

[0011] Furthermore, an antenna with a signal enhancement function is provided on the housing.

[0012] Furthermore, the shell is a sealed box.

[0013] Furthermore, a gas flow regulating valve is provided on the nitrogen output pipeline of the nitrogen separator.

[0014] Furthermore, the nitrogen separator is provided with a nitrogen outlet connector, which is located on the outer shell.

[0015] Furthermore, a battery interface and a vehicle interface are provided on the shell.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The drying module and filtering module in the air purifier module can dry the air and filter impurities, ensuring that the air input to the nitrogen separator is dry and free of suspended particles. A waterproof breathable valve is set on the outer shell to balance the air pressure inside and outside the shell, while isolating the air from entering the interior and achieving the environmental protection level of the shell. By setting a SIM card, all data information can be uploaded to the cloud processor in real time and finally transmitted to the mobile phone for users to view in real time, which is more intelligent.

[0018] Nitrogen is used as a fire suppressant for battery environment. Nitrogen is colorless, odorless, chemically stable, non-flammable, and has high heat capacity and thermal conductivity. It provides a stable use environment for lithium batteries during the battery charging and discharging process.

[0019] When the battery has thermal runaway, compared with traditional fire extinguishers, nitrogen as a fire extinguishing gas can absorb a large amount of battery heat, quickly diffuse to block oxygen to avoid violent combustion, and will not further damage the battery. In the process of suppression, there is no negative impact on the safety of the lithium battery itself.

[0020] The nitrogen used in the device comes from the air, so there is no need to carry a pressure vessel for storing a large amount of nitrogen, which reduces the carrying weight and occupied area and avoids the problem of regular maintenance of the pressure vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a top view of the utility model.

[0023] Figure 3It is a schematic diagram of the internal structure of the shell of the utility model.

[0024] In the figure, 1. outer shell; 11. waterproof breathable valve; 12. antenna; 13. nitrogen outlet connector; 14. battery interface; 2. air purifier module; 3. nitrogen separator; 4. host; 5. pressure detector; 6. gas flow regulating valve. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] like Figure 1-Figure 3 As shown, the nitrogen replacement fire suppression device of this embodiment includes a housing 1, an air purifier module 2 is provided on the housing 1, the air purifier module 2 is connected to a nitrogen separator 3 provided inside the housing 1, and an electrically connected host 4 is provided on one side of the nitrogen separator 3, and an electrically connected pressure detector 5 is provided on the host 4. The nitrogen separator 3 is cylindrical in shape and can be fixed inside the housing 1 by a clamp. The two end faces of the nitrogen separator 3 are provided with quick-insert pipe interfaces, one end interface is an air input port, and the other end interface is a nitrogen output port, and an oxygen output port fixed to the housing 1 is provided on the side.

[0027] The air purifier module 2 includes a drying module.

[0028] The air purifier module 2 includes a filter module.

[0029] The housing 1 is provided with a waterproof breathable valve 11 for maintaining the balance of internal and external air pressure. The waterproof breathable valve 11 is installed on the housing 1 and is used to connect the internal and external air pressures of the housing 1 and achieve the environmental protection level of the housing 1.

[0030] Also includes a SIM card for data transfer.

[0031] The housing 1 is provided with an antenna 12 for signal enhancement.

[0032] The housing 1 is a sealed box.

[0033] A gas flow regulating valve 6 is provided on the nitrogen output pipeline of the nitrogen separator 3 .

[0034] The nitrogen separator 3 is provided with a nitrogen outlet connector 13 , and the nitrogen outlet connector 13 is located on the housing 1 .

[0035] The housing 1 is provided with a battery interface 14 and a vehicle interface.

[0036] Example 1

[0037] During operation, the battery pack is connected to the nitrogen replacement fire suppression device through the battery interface 14. The nitrogen replacement fire suppression device is turned on by time, and is turned on at a fixed time according to the time obtained through experiments and tests to fill a certain amount of nitrogen into the battery pack.

[0038] Air enters the air purifier module 2, passes through the drying module, the primary filter module, and the secondary filter module in sequence, to dry the air and filter out impurities, and then is transported from the connecting pipeline of the gas outlet to the inlet of the nitrogen separator 3 to ensure that the air input to the nitrogen separator 3 is dry and free of suspended particles. The treated gas is connected to the air input port of the nitrogen separator 3, and the oxygen separated by the nitrogen separator 3 is discharged through the oxygen output port on the shell 1. Nitrogen is input into the battery pack through the nitrogen output pipeline. The host 4 is used to control the nitrogen flow output from the nitrogen separator 3 to the battery pack through the gas flow regulating valve 6. The pressure sensor 5 detects the pressure value of the environment where the device is located in real time and transmits the data to the host 4. The pressure sensor on the battery pack detects the pressure value of the battery pack in real time and transmits the data to the host 4. The host 4 determines whether it is necessary to open the pressure relief valve on the battery pack to relieve pressure based on the pressure difference between the two to prevent thermal runaway of the battery pack.

[0039] Example 2

[0040] The opening method of the nitrogen replacement fire suppression device is to determine whether to open it after the pressure value is measured by the pressure detection element arranged on the battery pack and the host 4 judges and processes it.

[0041] The working process is the same as in Example 1.

[0042] Example 3

[0043] A SIM card is provided on the nitrogen replacement fire suppression device, and an antenna 12 for signal enhancement is provided on the housing 1. The SIM card uploads various data information to the cloud processor in real time, and the cloud processor transmits the data to the mobile phone for real-time viewing by the user.

[0044] The working process is the same as in Example 1.

[0045] The drying module and the filtering module provided in the air purifier module 2 can dry the air and filter out impurities, thereby ensuring that the air input to the nitrogen separator 3 is dry and free of suspended particles; a waterproof and breathable valve 11 is provided on the housing 1 to balance the air pressure inside and outside the housing 1, while isolating the air from entering the interior and achieving the environmental protection level of the housing 1; and a SIM card can be provided to upload various data information to the cloud processor in real time and finally transmit it to the mobile phone end for users to view in real time, which is more intelligent;

[0046] Nitrogen is used as a fire suppressant for battery environment. Nitrogen is colorless, odorless, chemically stable, non-flammable, and has high heat capacity and thermal conductivity. It provides a stable use environment for lithium batteries during the battery charging and discharging process.

[0047] When the battery has thermal runaway, compared with traditional fire extinguishers, nitrogen as a fire extinguishing gas can absorb a large amount of battery heat, quickly diffuse to block oxygen to avoid violent combustion, and will not further damage the battery. In the process of suppression, there is no negative impact on the safety of the lithium battery itself.

[0048] The nitrogen used in the device comes from the air, so there is no need to carry a pressure vessel for storing a large amount of nitrogen, which reduces the carrying weight and occupied area and avoids the problem of regular maintenance of the pressure vessel.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nitrogen replacement fire suppression device, comprising a housing (1), characterized in that: An air purifier module (2) is provided on the housing (1), the air purifier module (2) is connected to a nitrogen separator (3) provided inside the housing (1), one side of the nitrogen separator (3) is provided with an electrically connected host (4), and the host (4) is provided with an electrically connected pressure detector (5).

2. The nitrogen replacement fire suppression device according to claim 1, characterized in that: The air purifier module (2) comprises a drying module.

3. The nitrogen replacement fire suppression device according to claim 1 or 2, characterized in that: The air purifier module (2) comprises a filter module.

4. The nitrogen replacement fire suppression device according to claim 1, characterized in that: The housing (1) is provided with a waterproof breathable valve (11) for maintaining the balance of internal and external air pressure.

5. The nitrogen replacement fire suppression device according to claim 1, characterized in that: Also includes a SIM card for data transfer.

6. The nitrogen replacement fire suppression device according to claim 5, characterized in that: The housing (1) is provided with an antenna (12) for signal enhancement.

7. The nitrogen replacement fire suppression device according to claim 1, characterized in that: The housing (1) is a sealed box.

8. The nitrogen replacement fire suppression device according to claim 1, characterized in that: A gas flow regulating valve (6) is provided on the nitrogen output pipeline of the nitrogen separator (3).

9. The nitrogen replacement fire suppression device according to claim 1, characterized in that: The nitrogen separator (3) is provided with a nitrogen outlet connector (13), and the nitrogen outlet connector (13) is located on the outer shell (1).

10. The nitrogen replacement fire suppression device according to claim 1, characterized in that: The housing (1) is provided with a battery interface (14) and a vehicle interface.

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