Nozzle, battery detection suppression system, and control method

Abstract

This invention relates to the field of battery safety protection technology, and more particularly to a nozzle, comprising a nozzle body and a one-way valve. The nozzle body has a sampling port, an atomizing port, and a connecting port. A passage is provided within the nozzle body to connect the sampling port and the atomizing port to the connecting port. The one-way valve is located at the sampling port; it opens when fluid flows into the sampling port and closes when fluid flows out. This invention also provides a battery detection and suppression system, comprising a suction detector, a suppression bottle assembly, a common pipeline, and the aforementioned nozzle. The input port of the suction detector is connected to the connecting port of the nozzle via the common pipeline to detect airflow and monitor the battery's normal condition. The output port of the suppression bottle assembly is connected to the connecting port of the nozzle via the common pipeline. In the event of battery thermal runaway, the suppression bottle assembly can spray inhibitors through the connecting port to cool and extinguish the battery. This invention also provides a control method for this battery detection and suppression system.

Description

Technical Field

[0001] This invention relates to the field of battery safety protection technology, and in particular to a nozzle, a battery detection and suppression system, and a control method. Background Technology

[0002] Existing lithium-ion battery-based aspirating detectors and suppression systems, in an effort to reduce costs, share the aspirating sampling pipeline and the suppression device's extinguishing pipeline, and install a nozzle inside the battery to connect these pipelines. If the nozzle diameter is set too large to accommodate sampling needs, the inhibitor cannot be atomized, resulting in poor spraying performance. If the nozzle diameter is set too small to ensure effective inhibitor spraying, blockages are prone to occur during sampling, preventing fluid samples from being delivered to the detection equipment in a timely manner, potentially causing safety hazards.

[0003] Therefore, there is an urgent need for a nozzle, a battery detection suppression system, and a control method to solve the above problems. Summary of the Invention

[0004] One object of the present invention is to provide a nozzle that can perform both air extraction and atomization functions.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A nozzle is provided, comprising:

[0007] The nozzle body has a sampling port, an atomizing port and a connecting port, and a passage is provided inside the nozzle body so that the sampling port and the atomizing port are connected to the connecting port;

[0008] A one-way valve is provided at the sampling port so that the one-way valve opens the sampling port when fluid flows into the sampling port and closes the sampling port when fluid flows out of the sampling port.

[0009] As a preferred embodiment of the nozzle, the nozzle body has a receiving cavity, which is connected between the sampling port and the connecting port, and the one-way valve is disposed in the receiving cavity.

[0010] As a preferred embodiment of the nozzle, the one-way valve includes a valve plate and an elastic element. One end of the elastic element is connected to the valve plate, and the other end is connected to the nozzle body. The valve plate can be located in a first position to block the channel between the sampling port and the receiving cavity. The elastic element has a tendency to push the valve plate to a second position to make the sampling port and the receiving cavity communicate.

[0011] As a preferred embodiment of the nozzle, a position sensor is also included, which is used to detect whether the valve plate is located in the first position.

[0012] As a preferred embodiment of the nozzle, it further includes an elastic ring. The receiving cavity is coaxially arranged with the sampling port. The width of the receiving cavity is greater than the width of the sampling port. The receiving cavity has a first opening that communicates with the sampling port. The elastic ring is circumferentially disposed around the first opening and attached to the inner wall of the receiving cavity. When the valve plate is in the first position, it circumferentially presses against the elastic ring.

[0013] Another objective of this invention is to provide a battery detection and suppression system that can ensure both air extraction sampling and good atomization effect of the inhibitor.

[0014] To achieve this objective, the present invention adopts the following technical solution:

[0015] A battery detection suppression system is provided, comprising an aspirating detector, a suppression bottle assembly, a common conduit, and the aforementioned nozzle. The input port of the aspirating detector is connected to the connection port of the nozzle via the common conduit, and the output port of the suppression bottle assembly is connected to the connection port of the nozzle via the common conduit.

[0016] As a preferred embodiment of the battery detection suppression system, it further includes a first valve, which is disposed on a first branch pipe connecting the aspirating detector and the common pipe to control the opening and closing of the first branch pipe;

[0017] And / or, it also includes a second valve, which is disposed on a second branch line connecting the suppression bottle group and the common line, to control the opening and closing of the second branch line.

[0018] As a preferred embodiment of the battery detection suppression system, a flow sensor is also included, which is disposed on the second branch pipe to detect the flow rate of the inhibitor within the second branch pipe.

[0019] As a preferred embodiment of the battery detection suppression system, multiple nozzles are provided, each nozzle is disposed within a multiple battery, and the communication ports of the multiple nozzles are all connected to the common pipeline.

[0020] Another objective of this invention is to provide a control method that can ensure both air extraction sampling and good atomization effect of the inhibitor.

[0021] To achieve this objective, the present invention adopts the following technical solution:

[0022] A control method is provided for use in the aforementioned battery detection suppression system, the control method comprising the following steps:

[0023] S1: The fluid sample inside the battery flows into the nozzle body through the opened sampling port;

[0024] S2: The fluid sample flows out from the communication port of the nozzle body and into the suction detector;

[0025] S3: The aspirating detector detects the fluid sample and determines whether the detection result exceeds the normal range. If so, the inhibitor in the inhibition bottle group flows to the nozzle body through the connecting port. The inhibitor can push the one-way valve to close the sampling port, and the inhibitor is atomized through the atomizing port and sprayed into the battery.

[0026] As an optimization scheme for the control method, the following steps are included after step S3:

[0027] S4: The position of the valve plate of the one-way valve is obtained by using the position sensor set at the sampling port. If the valve plate is not in the first position of blocking the sampling port, the injection pressure of the inhibitor sprayed by the inhibition bottle group is increased.

[0028] The beneficial effects of this invention are:

[0029] This invention provides a nozzle, comprising a nozzle body and a one-way valve. The nozzle body has a sampling port, an atomizing port, and a connecting port. A passage within the nozzle body connects the sampling port and the atomizing port to the connecting port. The one-way valve is located at the sampling port, opening when fluid flows into it and closing when fluid flows out. That is, during sampling, even if the fluid contains particulate matter and the atomizing port is blocked, the fluid can still smoothly reach the connecting port through the sampling port, ensuring a continuous input of sampled fluid. When it is necessary to spray inhibitor, the one-way valve closes the sampling port, allowing a large amount of inhibitor to be sprayed through the atomizing port, thus ensuring the atomization effect of the inhibitor and achieving efficient cooling and fire extinguishing of the battery.

[0030] This invention provides a battery detection and suppression system, including an air-inhaling detector, a suppression bottle assembly, a common conduit, and the aforementioned nozzle. The input port of the air-inhaling detector is connected to the nozzle's outlet via the common conduit to detect airflow and monitor the battery's condition. The output port of the suppression bottle assembly is connected to the nozzle's outlet via the common conduit, allowing the suppression bottle assembly to spray inhibitors through the outlet in the event of battery thermal runaway, thereby cooling and extinguishing the fire. This battery detection and suppression system ensures continuous air sampling and guarantees good atomization of the inhibitor.

[0031] This invention also provides a control method applied to the aforementioned battery detection and suppression system. The control method includes the following steps: S1: A fluid sample from the battery flows into the nozzle body through an open sampling port; S2: The fluid sample flows out from the connecting port of the nozzle body and into a suction detector; S3: The suction detector detects the fluid sample and determines whether the detection result exceeds the normal range. If so, the inhibitor in the suppression bottle group flows into the nozzle body through the connecting port. The inhibitor can push a one-way valve to close the sampling port, and the inhibitor is atomized through the atomization port and sprayed into the battery. By applying the above control method to the battery detection and suppression system, both suction sampling and good atomization effect of the inhibitor can be ensured, thereby ensuring timely cooling and fire suppression. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the nozzle structure provided in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the battery detection suppression system provided in an embodiment of the present invention.

[0034] In the picture:

[0035] 1. Nozzle body; 101. Sampling port; 102. Atomizing port; 103. Connecting port; 104. Receiving cavity; 1041. First port;

[0036] 2. Valve plate; 3. Elastic element; 4. Position sensor; 5. Interface pipe;

[0037] 10. Nozzle; 20. Suction detector; 30. Suppression bottle assembly; 40. Common pipeline; 50. First valve; 60. First branch pipeline; 70. Second branch pipeline;

[0038] 800, battery; 900, energy storage battery cluster. Detailed Implementation

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings, not all of them.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] To reduce costs, existing technologies often share the same suction sampling line and fire suppression line, with a nozzle installed inside the battery to connect these lines. If the nozzle diameter is set too large to accommodate sampling needs, the inhibitor cannot be atomized, resulting in poor fire suppression. Conversely, if the nozzle diameter is set too small to ensure effective inhibitor spraying, blockages can easily occur during sampling, preventing timely delivery of fluid samples to the detection equipment and posing a safety hazard. To balance suction sampling and atomization functions, such as... Figure 1 As shown, this embodiment provides a nozzle 10.

[0043] The nozzle 10 includes a nozzle body 1 and a one-way valve. The nozzle body 1 has a sampling port 101, an atomizing port 102, and a connecting port 103. A passageway is provided within the nozzle body 1 to connect the sampling port 101 and the atomizing port 102 to the connecting port 103. The one-way valve is located at the sampling port 101, opening it when fluid flows in and closing it when fluid flows out. That is, even if the fluid contains particulate matter and the atomizing port 102 is blocked by particulate matter during sampling, the fluid can still smoothly reach the connecting port 103 through the sampling port 101, ensuring a continuous input of sampled fluid. When it is necessary to spray inhibitor, the one-way valve closes the sampling port 101, allowing a large amount of inhibitor to be sprayed through the atomizing port 102, thus ensuring the atomization effect of the inhibitor and achieving efficient cooling and fire suppression of the battery 800, ensuring the safe use of the battery 800.

[0044] Preferably, the diameter of the sampling port 101 is greater than or equal to 6 mm to prevent it from being blocked by large particles, and the diameter of the atomizing port 102 is less than or equal to 2.2 mm to ensure the atomization effect of the inhibitor.

[0045] Preferably, a receiving cavity 104 is provided inside the nozzle body 1, and the receiving cavity 104 is connected between the sampling port 101 and the connecting port 103, and a one-way valve is provided inside the receiving cavity 104.

[0046] Preferably, the one-way valve includes a valve plate 2 and an elastic element 3. One end of the elastic element 3 is connected to the valve plate 2 and the other end is connected to the nozzle body 1. The valve plate 2 can be located in a first position to block the channel between the sampling port 101 and the receiving cavity 104. The elastic element 3 has the tendency to push the valve plate 2 to a second position to make the sampling port 101 and the receiving cavity 104 communicate. Figure 1 The valve plate 2 is in the second position, and the elastic element 3 is in its natural state.

[0047] Optionally, the elastic element 3 is a spring, with one end of the spring circumferentially connected to the valve plate 2 to ensure a secure connection between the spring and the valve plate 2. This one-way valve has a simple structure, high reliability, and long service life.

[0048] Optionally, the valve plate 2 is provided with a first guide portion, and the inner wall of the receiving cavity 104 is provided with a second guide portion. The first guide portion and the second guide portion cooperate to further ensure that the valve plate 2, during its movement from the second position toward the sampling port 101, can ultimately be located at the first position without deviation, thus ensuring that the valve plate 2 can completely block the channel between the sampling port 101 and the receiving cavity 104. Optionally, one of the first guide portion and the second guide portion is a guide protrusion, and the other is a guide groove.

[0049] To promptly ascertain the position of the valve plate 2, the nozzle 10 preferably further includes a position sensor 4, which is used to detect whether the valve plate 2 is in a first position. Optionally, the detection end of the position sensor 4 is disposed on the inner wall of the receiving cavity 104, and can contact the position sensor 4 when the valve plate 2 is in the first position.

[0050] To prevent the valve plate 2 from tilting and failing to completely seal the channel between the sampling port 101 and the receiving cavity 104, preferably, the nozzle 10 also includes an elastic ring (not shown in the figure). The receiving cavity 104 is coaxially arranged with the sampling port 101, and the width of the receiving cavity 104 is greater than the width of the sampling port 101. The receiving cavity 104 has a first opening 1041, which communicates with the sampling port 101. The elastic ring is circumferentially arranged around the first opening 1041 and attached to the inner wall of the receiving cavity 104. When the valve plate 2 is in the first position, it circumferentially presses against the elastic ring. Since the elastic ring has a certain elasticity, when the valve plate 2 circumferentially presses against the elastic ring, even if the valve plate 2 is tilted and the magnitude of the pressure between the two is inconsistent circumferentially, circumferential contact between the two can still be achieved, ensuring the sealing effect.

[0051] To facilitate the connection of the nozzle 10 to the common pipeline 40, preferably, the nozzle 10 further includes an interface pipe 5, which is connected to the nozzle body 1 and is located at the communication port 103, communicating with the communication port 103. The other end is used to connect to the pipeline so as to communicate with the common pipeline 40.

[0052] like Figure 2 As shown, this embodiment also provides a battery detection and suppression system that can ensure continuous air sampling and good atomization effect of the inhibitor. The battery detection and suppression system includes an inhalation detector 20, a suppression bottle assembly 30, a common conduit 40, and the aforementioned nozzle 10. The input port of the inhalation detector 20 is connected to the connection port 103 of the nozzle 10 via the common conduit 40, and the output port of the suppression bottle assembly 30 is connected to the connection port 103 of the nozzle 10 via the common conduit 40.

[0053] Preferably, the battery detection suppression system further includes a first valve 50, which is disposed on a first branch pipe 60 connecting the aspirating detector 20 and the common pipe 40 to control the opening and closing of the first branch pipe 60. Optionally, the first valve 50 is an electrically operated shut-off valve to ensure its response speed. The first valve 50 is open in the sampling state and closed in the extinguishing state to protect the aspirating detector 20.

[0054] Preferably, the battery detection and suppression system further includes a second valve, which is disposed on a second branch pipe 70 connecting the suppression bottle group 30 and the common pipe 40, to control the opening and closing of the second branch pipe 70. Optionally, the second valve is a puncture valve. The second valve is closed in the sampling state and open in the extinguishing state, so that the inhibitor can be smoothly sprayed into the battery 800 through the nozzle 10.

[0055] In order to promptly understand whether the inhibitor is being sprayed normally during fire extinguishing, the battery detection and inhibition system preferably also includes a flow sensor, which is installed on the second branch pipe 70 to detect the flow rate of the inhibitor within the second branch pipe 70.

[0056] Preferably, multiple nozzles 10 are provided, each nozzle 10 being disposed within a multiple battery 800, and the connecting ports 103 of the multiple nozzles 10 are all connected to a common pipeline 40. The multiple batteries 800 together form an energy storage battery cluster 900, and the battery detection and suppression system can ensure the safe use of this energy storage battery cluster 800. In this embodiment, when one or more batteries 800 experience thermal runaway, to prevent heat transfer to the normal batteries 800 and causing them to also experience thermal runaway, the battery detection and suppression system will spray inhibitors onto all batteries 800 to ensure overall safety and achieve a foolproof effect.

[0057] Of course, in other embodiments, the internal temperature of each battery 800 can also be monitored, and a control valve can be installed on a separate pipeline between the nozzle 10 of each battery 800 and the common pipeline 40. When the aspirating detector 20 detects the release of substances from the thermal runaway of the battery 800, an inhibitor is sprayed into the battery 800 with abnormal temperature to ensure that the inhibitor is used in a targeted and efficient manner.

[0058] When battery 800 experiences thermal runaway, the first valve 50 closes and the second valve opens. Inhibitor is injected into the nozzle body 1, pushing valve plate 2 against the spring to move to the first position. The inhibitor is atomized and ejected from the atomization port 102. The position sensor 4 transmits information about the blockage of sampling port 101 to the control unit. After the inhibitor injection is complete, since there is no high-pressure inhibitor impacting valve plate 2, it returns to the second position, and sampling port 101 resumes normal sampling. The position sensor 4 transmits information about the valve plate 2 opening to the control unit. Valve plate 2 can move back to the first position in the event of another thermal runaway to ensure the atomization effect of the inhibitor. Therefore, this one-way valve can be reused multiple times to ensure the service life of the battery detection and suppression system.

[0059] This embodiment also provides a control method applied to the battery detection suppression system described above, which includes at least the following steps.

[0060] S1: Start sampling. The one-way valve opens the sampling port 101, and the fluid sample in the battery 800 flows into the nozzle body 1 from the sampling port 101.

[0061] S2: The fluid sample flows out from the communication port 103 of the nozzle body 1 and flows into the aspirating detector 20 for detection.

[0062] It is known that before the atomizing port 102 is blocked, some fluid samples flow into the aspirating detector 20 from the atomizing port 102. However, since the sampling port 101 is much larger than the atomizing port 102, the vast majority of fluid samples flow into the sampling port 101. Therefore, the sampling stage is basically unaffected by whether the atomizing port 102 is blocked, ensuring continuous sampling. It is known that at this time, the first valve 50 is open and the second valve is closed.

[0063] S3: The aspirating detector 20 detects the fluid sample and determines whether the detection result exceeds the normal range. If so, it is determined that the battery 800 has a tendency for thermal runaway, and preparations are made to cool it down and extinguish the fire. The first valve 50 is closed, the second valve is opened, and the inhibitor in the inhibition bottle group 30 flows into the nozzle body 1 through the connecting port 103. The inhibitor can push the one-way valve to close the sampling port 101, and the inhibitor is atomized through the atomizing port 102 and sprayed into the battery 800.

[0064] Preferably, the method further includes step S4.

[0065] S4: Use the position sensor 4 set at the sampling port 101 to obtain the position of the valve plate 2 of the one-way valve, so as to check whether the valve plate 2 is in the first position of blocking the sampling port 101, that is, to check whether the sampling port 101 is closed.

[0066] When the control unit receives the detection result from the aspirating detector 20 and learns of the risk of thermal runaway, it will immediately switch to fire suppression mode to ensure timely cooling and extinguishing of the fire, preventing the thermal runaway from spreading. If the position sensor 4 checks that the sampling port 101 is not closed, the injection pressure of the inhibitor needs to be further increased.

[0067] In the case of multiple batteries 800 sharing a single battery detection and suppression system, if the position sensor 4 of fewer than a preset number of batteries 800 indicates that the sampling port 101 of its nozzle 10 is not closed, it is necessary to further obtain the temperature of the abnormal portion of the batteries 800 before deciding whether to increase the injection pressure of the inhibitor. If the temperature of this portion of the batteries 800 is not abnormal, then the poor inhibitor injection effect at that location can be considered acceptable. The immediate priority is to cool down and extinguish the abnormal temperature of the batteries 800, and the nozzles 10 with abnormal one-way valves can be inspected and maintained afterward.

[0068] For example, when there are a total of ten batteries 800, with a preset quantity of three, if the position sensor 4 of only one battery 800 shows that the sampling port 101 of its nozzle 10 is not closed, and the internal temperature of the battery 800 is within the normal range, it is determined that the abnormal closure of the sampling port 101 of the battery 800 does not affect the spraying effect of the inhibitor of other batteries 800. That is, it is not necessary to increase the spraying pressure of the inhibitor at this time. It is determined that the one-way valve of the nozzle 10 of the battery 800 or the position sensor 4 is abnormal, triggering the alarm unit to prompt the staff so that the area can be inspected, replaced or maintained later.

[0069] However, if the position sensors 4 of the five batteries 800 show that the sampling ports 101 of their respective nozzles 10 are not closed, which exceeds the preset number, then the injection pressure of the inhibitor needs to be increased. Alternatively, if the position sensors 4 of the three batteries 800 show that the sampling ports 101 of their nozzles 10 are not closed, and the temperature of one of the batteries 800 is within an abnormal range, then the injection pressure of the inhibitor needs to be increased.

[0070] When it is necessary to increase the injection pressure of the inhibitor, first increase it by 10% and maintain it for a preset time. The preset time is related to the pipeline and the flow rate of the inhibitor and can be set according to the actual situation. If the one-way valve in more than a preset number of nozzles 10 is still in an abnormal state when the preset time is reached, it is necessary to further increase the injection pressure of the inhibitor and maintain it for the preset time. Under normal circumstances, even if the one-way valve is not closed properly due to the loss of inhibitor injection pressure caused by dust entering the common pipeline 40 or in the nozzle body 1, the blockage can be opened by increasing the injection pressure of the inhibitor, so that the inhibitor can be sprayed normally at the atomizing port 102.

[0071] S5: When the inhibitor is sprayed to the preset amount, and the temperature results measured by the temperature sensors in multiple batteries 800 all meet the safe temperature range, the control unit controls the battery detection and suppression system to return to the sampling state, that is, the second valve closes and the first valve 50 opens. At this time, since the inhibitor is no longer sprayed, the one-way valve will also open automatically, and the sampling port 101 will automatically resume the sampling function to ensure that the battery detection and suppression system can continue to operate normally.

[0072] Optionally, a controllable drain port can be provided at the bottom of each battery 800 and connected to a drain pipe to promptly discharge inhibitors and other solid-liquid products from the battery 800, ensuring its normal operation. Of course, to ensure the normal operation of the battery 800, it is also necessary to ensure that it can still function normally after contact with inhibitors and when some inhibitors remain inside.

[0073] The battery detection and suppression system described above, using the control method described above, can ensure air extraction and sampling, as well as good atomization effect of the inhibitor, thereby ensuring timely cooling and fire suppression, and ensuring the safe use of battery 800.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A nozzle, characterized in that, include: The nozzle body (1) has a sampling port (101), an atomizing port (102) and a connecting port (103) on it. The nozzle body (1) has a passage so that the sampling port (101) and the atomizing port (102) are connected to the connecting port (103). A one-way valve is provided at the sampling port (101) so that when fluid flows into the sampling port (101), the one-way valve opens the sampling port (101) and when fluid flows out of the sampling port (101), the one-way valve closes the sampling port (101). Interface tube (5), one end of which is connected to the communication port (103), and the other end is used to connect to the common pipeline (40) of the battery detection suppression system.

2. The nozzle according to claim 1, characterized in that, The nozzle body (1) has a receiving cavity (104) inside, the receiving cavity (104) is connected between the sampling port (101) and the connecting port (103), and the one-way valve is located inside the receiving cavity (104).

3. The nozzle according to claim 2, characterized in that, The one-way valve includes a valve plate (2) and an elastic element (3). One end of the elastic element (3) is connected to the valve plate (2), and the other end is connected to the nozzle body (1). The valve plate (2) can be located in a first position to block the channel between the sampling port (101) and the receiving cavity (104). The elastic element (3) has a tendency to push the valve plate (2) to a second position to make the sampling port (101) and the receiving cavity (104) communicate.

4. The nozzle according to claim 3, characterized in that, It also includes a position sensor (4) for detecting whether the valve plate (2) is located in the first position.

5. The nozzle according to claim 3, characterized in that, It also includes an elastic ring. The receiving cavity (104) is coaxially arranged with the sampling port (101). The width of the receiving cavity (104) is greater than the width of the sampling port (101). The receiving cavity (104) has a first opening (1041) which is connected to the sampling port (101). The elastic ring is circumferentially arranged around the first opening (1041) and attached to the inner wall of the receiving cavity (104). When the valve plate (2) is in the first position, it circumferentially presses against the elastic ring.

6. A battery detection suppression system, characterized in that, The device includes an inhalation detector (20), a suppression bottle assembly (30), a common conduit (40), and a nozzle as described in any one of claims 1-5, wherein the inlet of the inhalation detector (20) is connected to the outlet (103) of the nozzle (10) via the common conduit (40), and the outlet of the suppression bottle assembly (30) is connected to the outlet (103) of the nozzle (10) via the common conduit (40).

7. The battery detection suppression system according to claim 6, characterized in that, It also includes a first valve (50), which is disposed on a first branch pipe (60) connecting the aspirating detector (20) and the common pipe (40) to control the opening and closing of the first branch pipe (60); and / or, it also includes a second valve, which is disposed on a second branch pipe (70) connecting the suppression bottle group (30) and the common pipe (40) to control the opening and closing of the second branch pipe (70).

8. The battery detection suppression system according to claim 7, characterized in that, It also includes a flow sensor disposed on the second branch pipe (70) to detect the flow rate of the inhibitor within the second branch pipe (70).

9. The battery detection suppression system according to claim 6, characterized in that, The nozzle (10) is provided in multiple ways, and the multiple nozzles (10) are respectively disposed in multiple batteries (800). The communication port (103) of the multiple nozzles (10) is connected to the common pipeline (40).

10. A control method, characterized in that, The control method, applied to the battery detection suppression system as described in any one of claims 6-9, comprises the following steps: S1: The fluid sample in the battery (800) flows into the nozzle body (1) through the open sampling port (101). S2: The fluid sample flows out from the communication port (103) of the nozzle body (1) and into the aspirating detector (20). S3: The inhalation detector (20) detects the fluid sample and determines whether the detection result exceeds the normal range. If so, the inhibitor in the inhibition bottle group (30) flows into the nozzle body (1) through the communication port (103). The inhibitor can push the one-way valve to close the sampling port (101), and the inhibitor is atomized through the atomization port (102) and sprayed into the battery (800).

11. The control method according to claim 10, characterized in that, The following steps are included after step S3: S4: The position of the valve plate (2) of the one-way valve is obtained by using the position sensor set at the sampling port (101). If the valve plate (2) is not in the first position of blocking the sampling port (101), the injection pressure of the inhibitor sprayed by the inhibition bottle group (30) is increased.

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