Fire sprinkler and energy storage device

Abstract

The utility model discloses a fire-fighting sprayer which comprises a shell, a first thermosensitive valve and a second thermosensitive valve, a spraying opening is formed at one end of the shell, the shell is further provided with a first channel and a second channel which are respectively communicated with the spraying opening, and the first channel and the second channel are respectively used for introducing a first fire-fighting medium and a second fire-fighting medium; the first channel is blocked by the first thermo-sensitive valve, and the first channel is conducted by the first thermo-sensitive valve at the first temperature T1; and the second channel is blocked by the second thermosensitive valve, the second channel is conducted by the second thermosensitive valve at the second temperature T2, and T1 is smaller than T2. Compared with the prior art, the fire-fighting spray head provided by the utility model can be connected with two fire-fighting media at the same time, and fire-fighting operation can be performed in a targeted manner according to temperature change.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage equipment fire fighting field especially, and relates to a fire nozzle and energy storage device. BACKGROUND

[0002] Because the battery pack will inevitably exist heat accumulation in the application process, the fire fighting technology of battery pack and energy storage field has important application value. The fire fighting medium commonly used in the battery pack fire fighting field has two kinds, one is the fire -retardant gas represented by nitrogen, which is suitable for the initial stage of thermal runaway, and after the battery pack replaces the single battery of thermal runaway, the fire -retardant gas can continue to be used after stopping input; The other is to use water as fire fighting medium, in the case that the fire is difficult to control, a large amount of fire water is injected, and all single batteries in the battery pack are sacrificed to realize complete fire extinguishing and prevent the further spread of fire.

[0003] The fire extinguishing effect of the two kinds of fire fighting medium has advantages and disadvantages, and the application scene is also different. Although the fire -retardant gas is effective, it is difficult to effectively inhibit the fire that has entered the high temperature rapid reaction stage, and the water can realize complete fire extinguishing, but it will cause serious damage to the battery, make the battery pack difficult to repair, and cause resource waste. Therefore, an advanced fire fighting technology considering the initial stage and the middle stage of thermal runaway of the battery pack is urgently needed, which can effectively extinguish the fire while reducing the damage to the battery pack and realize resource recycling. UTILITY MODEL CONTENT

[0004] One purpose of the utility model is to provide a fire nozzle and energy storage device, which aims to solve the technical problem that different fire fighting media are applied in different stages and have different effects.

[0005] In order to achieve the above purpose, a scheme provided by the utility model is: a fire nozzle, the fire nozzle comprises a shell and a first thermal sensitive valve and a second thermal sensitive valve: one end of the shell is formed with a spray opening, the shell is also provided with a first channel and a second channel which are communicated with the spray opening respectively, the first channel and the second channel are respectively used for inputting first fire fighting medium and second fire fighting medium; the first thermal sensitive valve blocks the first channel, the first thermal sensitive valve is conducted through the first channel at the first temperature T1; the second thermal sensitive valve blocks the second channel, the second thermal sensitive valve is conducted through the second channel at the second temperature T2, T1

[0006] In some embodiments of this application, the first channel includes a first sub-channel, a first guide port, a second sub-channel, a second guide port, and a third sub-channel connected in sequence. A first thermal valve is disposed in the second sub-channel, and the third sub-channel is connected to the spray port. A first valve cavity is formed inside the first thermal valve, and a first valve port and a second valve port are respectively opened on the surface of the first thermal valve and are connected to the first valve cavity. When the ambient temperature T0 > T1, the first valve port is connected to the first guide port, and the second valve port is connected to the second guide port. When T0 ≤ T1, at least one of the first guide port and the second guide port is closed by the first thermal valve.

[0007] In some embodiments of this application, the first thermal valve includes a first valve body and a first thermal magnetic block. A first valve cavity, a first valve port, and a second valve port are formed in the first valve body. The first valve body is slidably connected in a second sub-channel. The first thermal magnetic block is disposed at one end in the second sub-channel. When the ambient temperature T0≤T1, the first valve body and the first thermal magnetic block are spaced apart. When T0>T1, the first thermal magnetic block attracts the first valve body, making the first channel open.

[0008] In some embodiments of this application, the first thermal valve further includes a first spring, the two ends of which are connected to the first valve body and the housing, respectively. When the first thermal magnetic block attracts the first valve body, the first spring is in a deformed state.

[0009] In some embodiments of this application, when T1 < T0 ≤ T3, the magnetism of the first thermistor is positively correlated with temperature; when T0 = T3, the first valve body is in contact with the first thermistor, and the first channel is fully open; 50℃ ≤ T1 ≤ 70℃, 90℃ ≤ T3 ≤ 110℃.

[0010] In some embodiments of this application, the second channel includes a fourth sub-channel, a third guide port, a fifth sub-channel, a fourth guide port, and a sixth sub-channel connected in sequence. The second thermal valve is disposed in the fifth sub-channel, and the sixth sub-channel is connected to the spray port. A second valve cavity is formed inside the second thermal valve, and a third valve port and a fourth valve port are respectively opened on the surface of the second thermal valve and are connected to the second valve cavity. When the ambient temperature T0 > T2, the third valve port is connected to the third guide port, and the fourth valve port is connected to the fourth guide port. When T0 ≤ T2, at least one of the third guide port and the fourth guide port is closed by the second thermal valve.

[0011] In some embodiments of this application, the second thermal valve includes a second valve body and a second thermal magnetic block. A second valve cavity, a third valve port, and a fourth valve port are formed in the second valve body. The second valve body is slidably connected in a fifth sub-channel. The second thermal magnetic block is disposed at one end in the fifth sub-channel. When the ambient temperature T0≤T2, the second valve body and the second thermal magnetic block are spaced apart. When T0>T2, the second thermal magnetic block attracts the second valve body, thereby opening the second channel.

[0012] In some embodiments of this application, the second thermal valve further includes a second spring, with its two ends connected to the second valve body and the housing, respectively. When the second thermal magnetic block attracts the second valve body, the second spring is in a deformed state.

[0013] In some embodiments of this application, when T2 < T0 ≤ T4, the magnetism of the second thermistor is positively correlated with the temperature; when T0 = T4, the second valve body is in contact with the second thermistor, and the second channel is fully open; 90℃ ≤ T2 ≤ 110℃, 130℃ ≤ T4 ≤ 150℃.

[0014] In some embodiments of this application, 50℃≤T1≤70℃, 90℃≤T2≤110℃.

[0015] To achieve the above objectives, another solution provided by this utility model is: an energy storage device, which includes a battery pack and any of the above-mentioned fire sprinklers.

[0016] The beneficial effects of this utility model are as follows:

[0017] One end of the shell has a spray nozzle, and the shell also has a first channel and a second channel that are respectively connected to the spray nozzle. The first channel and the second channel are used to introduce the first fire-fighting medium and the second fire-fighting medium, respectively. The first thermal valve blocks the first channel and opens the first channel at a first temperature T1. The second thermal valve blocks the second channel and opens the second channel at a second temperature T2, where T1 < T2.

[0018] Compared with the prior art, the fire sprinkler head provided by this utility model can be connected to two fire-fighting media at the same time. In the early stage of thermal runaway when the temperature reaches T1 but not T2, the first channel is opened and the first fire-fighting medium is output through the sprinkler head. When the first fire-fighting medium fails and the temperature rises further and exceeds T2, the second channel is opened and the second fire-fighting medium is sprayed out from the sprinkler head to extinguish the fire. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the fire sprinkler provided in this embodiment of the utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of the fire sprinkler head provided in this embodiment of the present invention when both the first and second channels are blocked;

[0022] Figure 3 This is a schematic diagram showing the cooperation relationship between the first channel and the first thermal valve provided by this utility model;

[0023] Figure 4 This is a schematic diagram showing the cooperation relationship between the second channel and the second thermal valve provided by this utility model;

[0024] Figure 5 This is a cross-sectional schematic diagram of the fire sprinkler head provided in this embodiment of the present invention when only the first channel is open;

[0025] Figure 6 This is a cross-sectional schematic diagram of the fire sprinkler head provided in this embodiment of the present invention when both the first and second channels are open;

[0026] Figure 7 This is a schematic diagram of the overall structure of the first valve body provided in this embodiment of the utility model.

[0027] Explanation of icon numbers:

[0028] 10. Housing; 11. Spray nozzle; 12. First channel; 121. First sub-channel; 122. Second sub-channel; 123. Third sub-channel; 124. First guide port; 125. Second guide port; 13. Second channel; 131. Fourth sub-channel; 132. Fifth sub-channel; 133. Sixth sub-channel; 134. Third guide port; 135. Fourth guide port; 20. First thermal valve; 21. First valve body; 211. First valve chamber; 212. First valve port; 213. Second valve port; 22. First thermal magnet; 23. First spring; 30. Second thermal valve; 31. Second valve body; 311. Second valve chamber; 312. Third valve port; 313. Fourth valve port; 32. Second thermal magnet; 33. Second spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In existing firefighting operations for battery packs and energy storage devices, flame-retardant gases, represented by nitrogen, and flame-retardant liquids, represented by fire-fighting water, are two common firefighting media. The former has the advantage of being flame-retardant without causing significant damage to the battery pack; after the firefighting operation, the battery pack can continue to operate only by replacing the damaged individual cells. The latter, although it can damage a large number of individual cells, can provide a stable firefighting effect by extinguishing the fire and cooling it down when flame-retardant gases are insufficient to control the fire. Both have their advantages and disadvantages; therefore, a single firefighting method is insufficient to meet the firefighting needs at each stage of battery pack thermal runaway.

[0031] Please see Figures 1 to 6 As shown, Figure 1 This is a schematic diagram of the overall structure of the fire sprinkler provided in this embodiment of the utility model; Figure 2 This is a cross-sectional schematic diagram of the fire sprinkler provided in this embodiment of the present invention when both the first channel 12 and the second channel 13 are blocked; Figure 3 This is a schematic diagram showing the cooperation relationship between the first channel 12 and the first thermal valve 20 provided by this utility model; Figure 4 This is a schematic diagram showing the cooperation relationship between the second channel 13 and the second thermal valve 30 provided by this utility model; Figure 5 This is a cross-sectional schematic diagram of the fire sprinkler head provided in this embodiment of the present invention when only the first channel 12 is open; Figure 6 This is a cross-sectional schematic diagram of the fire sprinkler provided in this embodiment of the present invention when both the first channel 12 and the second channel 13 are connected.

[0032] To solve the above-mentioned technical problems, this utility model discloses a fire sprinkler head, which includes a housing 10 and a first thermal valve 20 and a second thermal valve 30. One end of the housing 10 is formed with a spray port 11. The housing 10 also has a first channel 12 and a second channel 13 that are respectively connected to the spray port 11. The first channel 12 and the second channel 13 are used to introduce a first fire-fighting medium and a second fire-fighting medium, respectively. The first thermal valve 20 blocks the first channel 12 and opens the first channel 12 at a first temperature T1. The second thermal valve 30 blocks the second channel 13 and opens the second channel 13 at a second temperature T2, where T1 < T2.

[0033] One shortcoming of the existing technology is that flame-retardant gases are not very effective at cooling rapidly heating battery packs, and thermal runaway between individual cells can spread rapidly without producing an open flame. Therefore, when the temperature is too high, flame-retardant gases are unable to prevent the spread of thermal runaway within the battery pack. Although spraying large amounts of fire-fighting water can significantly reduce the temperature and extinguish the fire, this also results in the damage of a large number of individual cells, which is costly and can only be used as a safety measure when the temperature cannot be controlled.

[0034] In this embodiment, the sprinkler nozzle 11 is simultaneously connected to the first channel 12 and the second channel 13. The first channel 12 and the second channel 13 are used to introduce different types of fire-fighting media. The first thermal valve 20 blocks the first channel 12, and the second thermal valve 30 blocks the second channel 13. When the ambient temperature T0 exceeds the first temperature T1, the first thermal valve 20 is turned on, and the first type of fire-fighting media is delivered to the sprinkler nozzle 11 through the first channel 12 and sprayed to extinguish the fire. When the ambient temperature T0 rises further and exceeds T2, the second type of fire-fighting media is delivered to the sprinkler nozzle 11 through the second channel 13 and sprayed to extinguish the fire. The two types of fire-fighting media play their respective roles at different stages of battery thermal runaway, achieving a better fire-fighting effect.

[0035] For clarity, one application of this embodiment is described herein and should not be construed as limiting the scope of protection of this application. The end of the first channel 12 furthest from the sprinkler nozzle 11 is connected to a nitrogen generator, and the second channel 13 is connected to a fire hydrant. The threshold T1 of the first thermal valve 20 is exemplarily 50°C, and the threshold T2 of the second thermal valve 30 is exemplarily 100°C. When the ambient temperature T0 exceeds 50°C, the first thermal valve 20 opens the first channel 12, allowing flame-retardant nitrogen generated by the nitrogen generator to enter the battery pack. If the fire is successfully extinguished, only the burning individual battery needs to be replaced. If the temperature continues to rise and exceeds 100°C, the second thermal valve 30 opens the second channel 13, allowing fire-fighting water to flood the battery pack, submerging all individual batteries. This extinguishes the fire while rapidly reducing the temperature inside the battery pack, preventing the spread of fire and further temperature increases by sacrificing a single battery pack.

[0036] Please refer to the following: Figure 7 As shown, Figure 7 This is a schematic diagram of the overall structure of the first valve body 21 provided in this embodiment of the utility model.

[0037] In some embodiments of this application, the first channel 12 includes a first sub-channel 121, a first guide port 124, a second sub-channel 122, a second guide port 125, and a third sub-channel 123 connected in sequence. A first thermal valve 20 is disposed in the second sub-channel 122, and the third sub-channel 123 is connected to the spray port 11. A first valve cavity 211 is formed in the first thermal valve 20, and a first valve port 212 and a second valve port 213 are respectively opened on the surface of the first thermal valve 20 and are connected to the first valve cavity 211. When the ambient temperature T0 > T1, the first valve port 212 is connected to the first guide port 124, and the second valve port 213 is connected to the second guide port 125. When T0 ≤ T1, at least one of the first guide port 124 and the second guide port 125 is closed by the first thermal valve 20.

[0038] This embodiment provides a specific structure of a first thermal valve 20. The opening and closing of the first channel 12 can be achieved by sliding the first thermal valve 20 within the second sub-channel 122. The structure is simple, highly reliable, and suitable for fire protection applications.

[0039] Furthermore, the first thermal valve 20 includes a first valve body 21 and a first thermal magnetic block 22. A first valve cavity 211, a first valve port 212, and a second valve port 213 are formed in the first valve body 21. The first valve body 21 is slidably connected in the second sub-channel 122. The first thermal magnetic block 22 is disposed at one end in the second sub-channel 122. When the ambient temperature T0≤T1, the first valve body 21 and the first thermal magnetic block 22 are spaced apart. When T0>T1, the first thermal magnetic block 22 attracts the first valve body 21, making the first channel 12 open.

[0040] When the ambient temperature exceeds the threshold, the first thermistor 22 attracts the first valve body 21, and the first valve body 21 slides in the second sub-channel 122, so that the first valve port 212 is connected to the first guide port 124, the second valve port 213 is connected to the second guide port 125, and the first thermistor 20 is connected to the first channel 12.

[0041] Furthermore, the first thermal valve 20 also includes a first spring 23, with its two ends connected to the first valve body 21 and the housing 10, respectively. When the first thermal magnetic block 22 attracts the first valve body 21, the first spring 23 is in a deformed state.

[0042] The first spring 23 is configured such that when the ambient temperature returns to normal and the first thermistor 22 is demagnetized, the first spring 23 pulls the first valve body 21 to reset, so that at least one of the first guide port 124 and the second guide port 125 is blocked by the first valve body 21, and the first channel 12 returns to the closed state.

[0043] It should be noted that when the first thermal magnetic block 22 attracts the first valve body 21, the first spring 23 is in a deformed state. This deformation can be either tensile or compressive.

[0044] Specifically, when T1 < T0 ≤ T3, the magnetism of the first thermistor 22 is positively correlated with temperature. When T0 = T3, the first valve body 21 is in contact with the first thermistor 22, and the first channel 12 is fully open. 50℃ ≤ T1 ≤ 70℃, 90℃ ≤ T3 ≤ 110℃.

[0045] The opening of the first thermal valve 20 is controlled by the attraction of the first thermal magnetic block 22, while the closing of the first thermal valve 20 is affected by the elasticity of the first spring 23. As the degree of opening of the first thermal valve 20 increases, the deformation of the first spring 23 increases, and the elastic force also increases. Therefore, the magnetism of the first thermal magnetic block 22 is positively correlated with temperature, which makes the degree of opening of the first thermal valve 20 positively correlated with the ambient temperature. As the ambient temperature rises, the input of the first fire-fighting medium gradually increases. 50℃≤T1≤70℃ and 90℃≤T3≤110℃ are also the applicable operating temperature range for flame-retardant gases.

[0046] In some embodiments of this application, the second channel 13 includes a fourth sub-channel 131, a third guide port 134, a fifth sub-channel 132, a fourth guide port 135, and a sixth sub-channel 133 connected in sequence. The second thermal valve 30 is disposed in the fifth sub-channel 132, and the sixth sub-channel 133 is connected to the spray port 11. A second valve cavity 311 is formed in the second thermal valve 30, and a third valve port 312 and a fourth valve port 313 are respectively opened on the surface of the second thermal valve 30 and are connected to the second valve cavity 311. When the ambient temperature T0 > T2, the third valve port 312 is connected to the third guide port 134, and the fourth valve port 313 is connected to the fourth guide port 135. When T0 ≤ T2, at least one of the third guide port 134 and the fourth guide port 135 is closed by the second thermal valve 30.

[0047] This embodiment provides a specific structure of a second thermal valve 30. The second channel 13 can be opened and closed by sliding the second thermal valve 30 within the fifth sub-channel 132. The structure is simple, highly reliable, and suitable for fire protection applications.

[0048] Furthermore, the second thermal valve 30 includes a second valve body 31 and a second thermal magnetic block 32. A second valve cavity 311, a third valve port 312, and a fourth valve port 313 are formed in the second valve body 31. The second valve body 31 is slidably connected in the fifth sub-channel 132. The second thermal magnetic block 32 is disposed at one end in the fifth sub-channel 132. When the ambient temperature T0≤T2, the second valve body 31 and the second thermal magnetic block 32 are spaced apart. When T0>T2, the second thermal magnetic block 32 attracts the second valve body 31, making the second channel 13 open.

[0049] When the ambient temperature exceeds the threshold, the second thermistor 32 attracts the second valve body 31, and the second valve body 31 slides in the fifth sub-channel 132, so that the third valve port 312 is connected to the third guide port 134, the fourth valve port 313 is connected to the fourth guide port 135, and the second thermistor 30 is connected to the second channel 13.

[0050] Furthermore, the second thermal valve 30 also includes a second spring 33, the two ends of which are connected to the second valve body 31 and the housing 10 respectively. When the second thermal magnet 32 ​​attracts the second valve body 31, the second spring 33 is in a deformed state.

[0051] The second spring 33 is configured such that when the ambient temperature returns to normal and the second thermistor 32 is demagnetized, the second spring 33 pulls the second valve body 31 to reset, so that at least one of the third guide port 134 and the fourth guide port 135 is blocked by the second valve body 31, and the second channel 13 returns to the closed state.

[0052] Specifically, when T2 < T0 ≤ T4, the magnetism of the second thermistor 32 is positively correlated with temperature. When T0 = T4, the second valve body 31 is in contact with the second thermistor 32, and the second channel 13 is fully open. 90℃ ≤ T2 ≤ 110℃, 130℃ ≤ T4 ≤ 150℃.

[0053] The opening of the second thermal valve 30 is controlled by the attraction of the second thermal magnetic block 32, while the closing of the second thermal valve 30 is affected by the elasticity of the second spring 33. As the degree of opening of the second thermal valve 30 increases, the deformation of the second spring 33 increases, and the elastic force also increases. Therefore, the magnetism of the second thermal magnetic block 32 is positively correlated with temperature, which makes the degree of opening of the second thermal valve 30 positively correlated with the ambient temperature. As the ambient temperature rises, the input of the second fire-fighting medium gradually increases. 90℃≤T2≤110℃ and 130℃≤T4≤150℃ are precisely the working temperature range suitable for water spray fire extinguishing.

[0054] For example, in some embodiments of this application, 50℃≤T1≤70℃, 90℃≤T2≤110℃.

[0055] In the initial stage of thermal runaway when the temperature reaches T1 but not T2, the first channel 12 is activated and outputs the first fire-fighting medium through the sprinkler head. When the first fire-fighting medium fails and the temperature rises further and exceeds T2, the second channel 13 is activated, and the second fire-fighting medium is sprayed out from the sprinkler head to extinguish the fire. The temperature range of 50℃≤T1≤70℃ and 90℃≤T2≤110℃ is suitable for situations where nitrogen is used as the first fire-fighting medium and water is used as the second fire-fighting medium.

[0056] To solve the above-mentioned technical problems, this utility model also discloses an energy storage device, which includes a battery pack and a fire sprinkler head disclosed in any of the above embodiments.

[0057] Because the energy storage device in this embodiment includes the fire sprinkler disclosed in any of the above embodiments, this embodiment has at least the same technical effect as the above embodiments, that is, at least two fire-fighting media are used to cool and extinguish the battery pack according to different temperatures.

[0058] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0059] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0060] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0061] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the design concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A fire sprinkler head, characterized in that, include: The housing has a spray nozzle at one end, and the housing also has a first channel and a second channel that are respectively connected to the spray nozzle. The first channel and the second channel are respectively used to introduce a first fire-fighting medium and a second fire-fighting medium. The first thermal valve blocks the first channel, and the first thermal valve opens the first channel at a first temperature T1. The second thermal valve blocks the second channel, and the second thermal valve opens the second channel at the second temperature T2, where T1 < T2.

2. The fire sprinkler head according to claim 1, characterized in that, The first channel includes a first sub-channel, a first inlet, a second sub-channel, a second inlet, and a third sub-channel connected in sequence. The first thermal valve is disposed in the second sub-channel, and the third sub-channel is connected to the spray nozzle. The first thermal valve has a first valve cavity, and the surface of the first thermal valve has a first valve port and a second valve port that are respectively connected to the first valve cavity. When the ambient temperature T0 > T1, the first valve port is connected to the first guide port, and the second valve port is connected to the second guide port. When T0 ≤ T1, at least one of the first guide port and the second guide port is closed by the first thermal valve.

3. The fire sprinkler head according to claim 2, characterized in that, The first thermal valve includes a first valve body and a first thermal magnetic block. The first valve cavity, the first valve port, and the second valve port are formed in the first valve body. The first valve body is slidably connected in the second sub-channel. The first thermal magnetic block is disposed at one end in the second sub-channel. When the ambient temperature T0≤T1, the first valve body and the first thermal magnetic block are spaced apart. When T0>T1, the first thermal magnetic block attracts the first valve body, making the first channel open.

4. The fire sprinkler head according to claim 3, characterized in that, The first thermal valve also includes a first spring, with its two ends connected to the first valve body and the housing, respectively. When the first thermal magnetic block attracts the first valve body, the first spring is in a deformed state.

5. The fire sprinkler head according to claim 4, characterized in that, When T1 < T0 ≤ T3, the magnetism of the first thermistor is positively correlated with temperature. When T0 = T3, the first valve body is in contact with the first thermistor, and the first channel is fully open. 50℃ ≤ T1 ≤ 70℃, 90℃ ≤ T3 ≤ 110℃.

6. The fire sprinkler head according to claim 1, characterized in that, The second channel includes a fourth sub-channel, a third inlet, a fifth sub-channel, a fourth inlet, and a sixth sub-channel connected in sequence. The second thermal valve is disposed in the fifth sub-channel, and the sixth sub-channel is connected to the spray nozzle. The second thermal valve has a second valve chamber, and the surface of the second thermal valve has a third valve port and a fourth valve port that are respectively connected to the second valve chamber. When the ambient temperature T0 > T2, the third valve port is connected to the third guide port, and the fourth valve port is connected to the fourth guide port. When T0 ≤ T2, at least one of the third guide port and the fourth guide port is closed by the second thermal valve.

7. The fire sprinkler head according to claim 6, characterized in that, The second thermal valve includes a second valve body and a second thermal magnetic block. The second valve cavity, the third valve port, and the fourth valve port are formed in the second valve body. The second valve body is slidably connected in the fifth sub-channel. The second thermal magnetic block is disposed at one end in the fifth sub-channel. When the ambient temperature T0≤T2, the second valve body and the second thermal magnetic block are spaced apart. When T0>T2, the second thermal magnetic block attracts the second valve body, making the second channel open.

8. The fire sprinkler head according to claim 7, characterized in that, The second thermal valve also includes a second spring, the two ends of which are connected to the second valve body and the housing, respectively. When the second thermal magnetic block attracts the second valve body, the second spring is in a deformed state.

9. The fire sprinkler head according to claim 8, characterized in that, When T2 < T0 ≤ T4, the magnetism of the second thermistor is positively correlated with temperature. When T0 = T4, the second valve body is in contact with the second thermistor, and the second channel is fully open. 90℃ ≤ T2 ≤ 110℃, 130℃ ≤ T4 ≤ 150℃.

10. The fire sprinkler head according to any one of claims 1 to 9, characterized in that, 50℃≤T1≤70℃, 90℃≤T2≤110℃.

11. An energy storage device, characterized in that, Includes a battery pack and a fire sprinkler head as described in any one of claims 1-10.

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