Thermal runaway flue gas treatment device for electric equipment

Abstract

The utility model provides a thermal runaway flue gas treatment device of electric equipment, which mainly solves the problem that potential safety hazards exist after thermal runaway flue gas generated by thermal runaway of an existing battery is exhausted. The thermal runaway flue gas treatment device is integrally mounted outside electric equipment and comprises a separator, a trigger and a combustion assembly which are connected in sequence, the combustion assembly comprises a combustion cylinder and an igniter; the combustion cylinder is provided with a combustion cavity for combusting thermal runaway flue gas; the igniter is used for igniting the thermal runaway flue gas in the combustion cavity; the trigger is used for starting the igniter when the thermal runaway flue gas enters the combustion cylinder; the separator is used for separating gas in the thermal runaway flue gas from electrolyte and solid, and the separated gas enters the combustion cylinder to be combusted. The device is simple in structure, the thermal runaway flue gas can be treated only through several parts, and the cost is low; meanwhile, the device is very convenient to install on site, small in size after being assembled and high in integration degree.

Description

Technical Field

[0001] This utility model belongs to the field of battery safety, specifically relating to a thermal runaway flue gas treatment device for electrical equipment. Background Technology

[0002] Lithium-ion batteries have a wide range of applications, including energy storage and power batteries. In recent years, with the further development of lithium-ion batteries, their safe use has also attracted attention. Due to the principles and structural characteristics of lithium-ion batteries, overcharging, over-discharging, overheating, and mechanical impacts can easily cause the battery separator to collapse and internal short circuits, leading to thermal runaway.

[0003] When lithium-ion batteries experience thermal runaway, they generate a large amount of thermal runaway fumes. These fumes are highly susceptible to combustion or explosion upon release, posing a safety hazard. Summary of the Invention

[0004] To address the safety hazards posed by the exhaust of thermal runaway gases from existing batteries, this invention provides a thermal runaway gas treatment device for electrical equipment.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A thermal runaway flue gas treatment device for electrical equipment is installed externally to the equipment. Along the flow direction of the thermal runaway flue gas, the device includes a separator, a trigger, and a combustion assembly connected in sequence. The combustion assembly includes a combustion chamber and an igniter. The combustion chamber has a combustion chamber for burning the thermal runaway flue gas, and its sidewall has multiple vents communicating with the combustion chamber. The igniter ignites the thermal runaway flue gas in the combustion chamber. The trigger activates the igniter when the thermal runaway flue gas enters the combustion chamber. The separator separates the gas from the electrolyte and solids in the thermal runaway flue gas, and the separated gas enters the combustion chamber for combustion.

[0007] Furthermore, the separator includes a separation tank filled with a treatment liquid. The separation tank is provided with a flue gas inlet and a flue gas outlet. The position of the flue gas inlet is lower than the liquid level of the treatment liquid, and the position of the flue gas outlet is higher than the liquid level of the treatment liquid. After the thermal runaway flue gas enters the separation tank, the electrolyte and solids in the thermal runaway flue gas are filtered and retained in the separation tank, and the gas flows out through the flue gas outlet of the separation tank.

[0008] Furthermore, the flue gas inlet is connected to an anti-backflow pipe, the outlet end of which is immersed in the treatment liquid, and the inlet end is located outside the separator and above the liquid level of the treatment liquid.

[0009] Furthermore, a support frame is provided at the bottom of the separator.

[0010] Furthermore, it also includes a first backfire prevention device disposed between the combustion chamber and the trigger to prevent backflow of the flame inside the combustion chamber.

[0011] Furthermore, it also includes a second backfire prevention device disposed between the separator and the trigger to further prevent the combustion flame from flowing back.

[0012] Furthermore, the separator, trigger, and combustion chamber are connected via pipe joints or threads.

[0013] Furthermore, the combustion cylinder is a cylindrical body with an open bottom and a closed top. The top of the cylindrical body is sealed by a top plate, and the bottom is sealed by a bottom plate. The bottom plate is provided with a flue gas pipe for transporting thermal runaway flue gas into the combustion chamber.

[0014] Furthermore, a rain shield is provided on the top of the combustion cylinder, and the rain shield covers the top of the combustion cylinder.

[0015] Furthermore, the igniter includes a pulse ignition needle and a pulse generator. The pulse ignition needle is located at the outlet end of the flue gas pipe, the pulse generator is located outside the combustion chamber, and the trigger is a flow switch.

[0016] Compared with existing technologies, the above technical solution has the following advantages:

[0017] 1. This utility model provides a thermal runaway gas treatment device that provides controllable ignition treatment for the thermal runaway gas emitted after a battery thermal runaway, thus avoiding the safety hazards caused by the emission of thermal runaway gas. The device has a simple structure, requiring only a few components to treat the thermal runaway gas, resulting in low cost. Furthermore, the assembled device is compact, highly integrated, and occupies minimal space, making it widely applicable. Especially when applied to large-scale energy storage devices used in industrial, commercial, or power plant applications, it occupies less space and is easier to transport and install compared to related technologies that use cooling, adsorption, and ignition devices for thermal runaway gas treatment in large-scale energy storage devices.

[0018] 2. In this utility model's thermal runaway flue gas treatment device, the separator can treat the electrolyte and solid impurities in the thermal runaway flue gas, avoiding defects such as flame splashing and flame instability caused when the electrolyte and impurities in the thermal runaway flue gas burn together with combustible gases. Simultaneously, it can also cool the thermal runaway flue gas to reduce its temperature, thereby preventing damage to the igniter from the high-temperature thermal runaway flue gas. Furthermore, after passing through the separator, the thermal runaway flue gas is discharged at a relatively stable flow rate, avoiding the safety hazards caused by unstable flow rates that prevent timely ignition of the thermal runaway flue gas or sudden flame enlargement, thus improving the safety of the device during use.

[0019] 3. In the thermal runaway flue gas treatment device of this utility model, the bottom of the separator is provided with a support frame so that the whole device can meet the needs of different application scenarios, and it is also convenient to fix it on the energy storage device.

[0020] 4. The thermal runaway flue gas treatment device of this utility model also includes a first backfire prevention device disposed between the combustion cylinder and the trigger. The first backfire prevention device can effectively prevent flame backflow, protect the trigger, avoid damage to the trigger by the flame, and ensure the accurate and reliable opening of the igniter. To further improve safety, a second backfire prevention device can also be installed between the separator and the trigger to further prevent flame backflow in the combustion cylinder.

[0021] 5. The thermal runaway flue gas treatment device of this utility model has a simple structure and is very convenient to install on site. During installation, it is only necessary to connect the components through pipe joints or threads, which is very convenient for assembly.

[0022] 6. In the thermal runaway flue gas treatment device of this utility model, when the thermal runaway flue gas is burned in the combustion cylinder, the combustion flame will not overflow because the top of the combustion cylinder is sealed by the top plate and the bottom is sealed by the bottom plate. At the same time, the combustion cylinder can also isolate the heat generated during combustion, which improves the safety during combustion and thus improves the safety of the thermal runaway flue gas treatment device during use.

[0023] 7. In the thermal runaway flue gas treatment device of this utility model, the igniter is a pulse igniter, and a rain shield is provided on the top of the combustion cylinder. The rain shield prevents external impurities or water vapor from entering the combustion cylinder as much as possible, so as to avoid affecting the igniter inside the combustion cylinder. At the same time, after the battery experiences thermal runaway, when the thermal runaway flue gas burns inside the combustion cylinder, the rain shield can also protect the combustion flame and prevent rainwater and other substances from entering the combustion cylinder and affecting the combustion flame.

[0024] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0025] 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 these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the thermal runaway flue gas treatment device in Example 1;

[0027] Figure 2 This is a partial cross-sectional view of the thermal runaway flue gas treatment device in Example 1;

[0028] Figure 3 This is a schematic diagram of the combustion cylinder structure in Example 1;

[0029] Figure 4 This is a schematic diagram of the thermal runaway flue gas treatment device (with a rain cover) in Example 1;

[0030] Figure 5 This is a schematic diagram of the thermal runaway flue gas treatment device in Example 2;

[0031] Figure 6 This is a schematic diagram of the separator in Example 2.

[0032] Reference numerals: 1-combustion cylinder, 2-igniter, 3-trigger, 4-separator, 5-first backfire prevention device, 6-second backfire prevention device, 7-rain shield, 11-combustion chamber, 12-vent, 13-top plate, 14-bottom plate, 15-flue pipe, 41-separator tank, 42-backflow prevention pipeline, 43-flue gas outlet, 44-drain outlet, 45-support frame, 46-baffle plate. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0034] The phrase "other embodiments" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0035] In this specification, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection, an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] Furthermore, in the description of this utility model, it should be noted that the terms "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] This utility model provides a thermal runaway flue gas treatment device for electrical equipment, which can be vehicles, ships, spacecraft, energy storage devices, etc. Vehicles can be new energy vehicles or two-wheeled electric vehicles, and energy storage devices can be residential energy storage devices, industrial and commercial energy storage devices, power plant generation and storage devices, etc. This application does not impose special limitations on the aforementioned electrical equipment. Electrical equipment generally includes multiple individual batteries (individual batteries can be existing cylindrical batteries, prismatic batteries, pouch batteries, etc.), which are connected in series, parallel, or series-parallel to meet different capacity requirements. During use, or in cases of overcharging, over-discharging, or mechanical collisions, these multiple individual batteries are prone to thermal runaway, generating thermal runaway flue gas. This thermal runaway flue gas accumulates outside the energy storage device or power battery pack, posing a safety hazard.

[0038] To ensure battery safety during use, prior art CN221964374U discloses a fire safety system and energy storage device for energy storage equipment. In this fire safety system, the ignition device is located on the top outside of the energy storage box, while the adsorption device and cooling device are located inside the energy storage box. This requires the energy storage box to provide dedicated space for the adsorption device and cooling device, which in turn affects the energy density of the battery inside the energy storage box. At the same time, the aforementioned adsorption device and cooling device need to be transported separately from the ignition device and then installed at the site of use, which is quite cumbersome.

[0039] This invention provides a thermal runaway gas treatment device that provides controllable ignition treatment for thermal runaway gas, ensuring that the discharged thermal runaway gas does not pose a safety hazard and improving the safety of energy storage devices or power battery packs. The thermal runaway gas treatment device includes a separator, a trigger, and a combustion assembly, which are connected sequentially along the flow direction of the thermal runaway gas. This thermal runaway gas treatment device has a simple structure, requiring only a few components such as a separator and an ignition device to treat thermal runaway gas, resulting in low cost. Furthermore, the device is very convenient to install on-site; during installation, the components are simply connected via pipe joints or threads, making assembly very easy. In addition, the assembled device is small in size, highly integrated, and occupies little space, making it widely applicable. Especially when applied to large-scale energy storage devices used in industrial, commercial, or power plants, it occupies less space and is easier to transport and install compared to related technologies where large-scale energy storage devices use cooling, adsorption, and ignition devices.

[0040] Example 1

[0041] like Figure 1 and Figure 2 As shown, this embodiment provides a thermal runaway flue gas treatment device for electrical equipment. The device is installed externally on the electrical equipment and includes a separator 4, a trigger 3, and a combustion assembly. The separator 4, trigger 3, and combustion assembly are connected sequentially along the flow direction of the thermal runaway flue gas. The combustion assembly includes a combustion chamber 1 and an igniter 2. The combustion chamber 1 has a combustion chamber 11 for burning the thermal runaway flue gas. Multiple air holes 12 communicating with the combustion chamber 11 are provided on the side wall of the combustion chamber 1. The trigger 3 activates the igniter 2 when the thermal runaway flue gas enters the combustion chamber 1. The igniter 2 ignites the thermal runaway flue gas in the combustion chamber 11. The separator 4 separates the gas from the electrolyte and solid impurities in the thermal runaway flue gas. After separation, the electrolyte and solid impurities are retained in the separation tank, and the gas enters the combustion chamber 1 for combustion. The structure of each component is described in detail below.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the inner cavity of the combustion cylinder 1 is a combustion chamber 11 for thermal runaway flue gas combustion, mainly providing combustion space for the combustion of thermal runaway flue gas. The shape of the combustion cylinder 1 is not required; it can be a cylindrical structure or a rectangular cylindrical structure, etc. To maintain aesthetics and ease of installation, the shape of the combustion cylinder 1 is generally cylindrical.

[0043] like Figure 3As shown, the combustion cylinder 1 in this embodiment can specifically be a cylindrical body with an open bottom and an open top. The top of the combustion cylinder 1 is provided with a top plate 13, and the bottom is provided with a bottom plate 14. The top plate 13 and the bottom plate 14 are used to prevent the combustion flame from overflowing from the top or bottom. The side wall of the combustion cylinder 1 is provided with a plurality of air holes 12 communicating with the combustion chamber 11. The air holes 12 can be circular holes, directional holes, or strip holes, and there are no requirements in this regard. There can be multiple sets of air holes 12. Each set of air holes 12 is arranged circumferentially along the cylinder wall of the combustion cylinder 1, and multiple sets of air holes 12 are arranged axially along the cylinder wall of the combustion cylinder 1. The function of the air holes 12 is twofold: first, to discharge the gas after combustion, and second, to provide air for combustion.

[0044] like Figure 3 As shown, in this embodiment, the combustion cylinder 1 has a flue gas pipe 15 on the bottom plate 14. The flue gas pipe 15 penetrates the bottom plate 14, with its outlet located inside the combustion cylinder 1 and its inlet located outside the combustion cylinder 1. The thermal runaway flue gas enters the combustion cylinder 1 through the flue gas pipe 15 and is safely combusted.

[0045] In this embodiment, the thermal runaway flue gas is burned within the combustion chamber 1. The combustion chamber 1 can enclose the combustion flame generated during the combustion of the thermal runaway flue gas within the combustion chamber, avoiding the risk of the combustion flame overflowing. At the same time, the combustion chamber 1 can also insulate the heat generated during the combustion of the thermal runaway flue gas, ensuring the safety of the thermal runaway flue gas during combustion, and further improving the safety of the device during use.

[0046] like Figure 1 As shown, the igniter 2 in this embodiment is mainly used to ignite the thermal runaway flue gas in the combustion chamber 11, achieving controlled combustion of the thermal runaway flue gas. The igniter 2 can be implemented using different structures; this embodiment uses an arc igniter, which can be powered by a dry cell battery or an external circuit. In this embodiment, the igniter 2 preferably uses a reliable pulse igniter, specifically including a pulse ignition needle and a pulse generator. The pulse generator includes a high-voltage transformer and a circuit board. During installation, the pulse ignition needle is placed inside the combustion chamber 1, at the outlet end of the flue gas pipe. The pulse generator is installed outside the combustion chamber 11 to prevent damage from the combustion flame or heat of the thermal runaway flue gas. Specifically, the pulse generator can be integrated into the high-voltage box of the energy storage device or placed on the circuit board of the battery pack.

[0047] like Figure 1 and Figure 2As shown, to ensure timely ignition of the thermal runaway flue gas, a trigger 3 is installed along the path of the flue gas. The trigger 3 reliably activates the igniter when the thermal runaway flue gas enters the combustion chamber 1. This trigger 3 can be a sensor of various types, such as a pressure sensor, gas sensor, flow sensor, or temperature sensor. When the battery emits thermal runaway flue gas, the sensor monitors the flow rate, pressure, temperature, and gas composition of the flue gas in real time. When the monitored data exceeds a threshold, a signal is sent to the pulse generator to initiate ignition. In this embodiment, a flow switch can be used as the sensor to ensure timely and reliable triggering of the igniter 2 after the battery emits thermal runaway flue gas. The flow switch can be connected to other devices via pipe joints or threads during installation.

[0048] After the igniter 2 ignites the thermal runaway flue gas, to prevent backflow of the combustion flame and its impact on components such as the trigger 3, this embodiment also includes a first backfire prevention device 5. The first backfire prevention device 5 is specifically installed between the combustion chamber 1 and the trigger 3. If the flame spreads backward after the thermal runaway flue gas is ignited, it is blocked by the first backfire prevention device 5, thus preventing damage to the trigger 3. Therefore, the first backfire prevention device 5 effectively protects the trigger 3, ensuring accurate and reliable activation, thereby ensuring reliable ignition of the igniter. The first backfire prevention device 5 specifically uses a one-way valve, which is connected to the flue gas pipe 15 and the trigger 3 via a pipe joint or thread.

[0049] The separator 4 in this embodiment includes a separation tank 41. The shape of the separation tank 41 is not limited and can be a rectangular tank, a circular tank, or an elliptical tank, etc., but a circular tank is preferred because it has good pressure-bearing performance. The separation tank 41 is provided with a flue gas inlet and a flue gas outlet 43. The flue gas inlet is used to transport the thermal runaway flue gas into the separation tank 41, and the flue gas outlet 43 discharges the thermal runaway flue gas from the separation tank 41. At the same time, the separation tank 41 is filled with a treatment liquid, which can be water, alkaline solution, fluorinated liquid, etc. When the thermal runaway flue gas passes through the treatment liquid, the electrolyte and solid impurities carried in the thermal runaway flue gas are filtered and retained in the separation tank 41. The gas is discharged from the separation tank 41 through the flue gas outlet 43. After separation, only the gas participates in subsequent combustion, making the combustion of the thermal runaway flue gas more stable and reliable. If the treatment solution is an alkaline solution, the alkaline solution can not only remove solid impurities and electrolytes from the thermal runaway flue gas, but also adsorb some of the thermal runaway flue gas so that the subsequent igniter 2 can fully treat the remaining thermal runaway flue gas.

[0050] In the specific configuration of the flue gas inlet and outlet 43 on the separator 4, the flue gas inlet is positioned below the liquid level of the treatment liquid, while the flue gas outlet is positioned above the liquid level. The flue gas inlet is generally located near the bottom of the separator 4, allowing the treatment liquid to effectively treat the thermal runaway flue gas. The flue gas outlet 43 is generally located at the top of the separation tank 41, allowing the separated gas to exit the separator 4 smoothly. Additionally, a drain port 44 can be provided at the bottom of the separation tank 41 to discharge the treatment liquid within it. Furthermore, an anti-backflow pipe 42 can be connected to the flue gas inlet. The outlet end of the anti-backflow pipe 42 is immersed in the treatment liquid, while the inlet end is located outside the separation tank 41 and above the liquid level. This anti-backflow pipe 42 not only facilitates the transport of the thermal runaway flue gas to the separation tank but also prevents leakage of the treatment liquid from the separation tank 41.

[0051] Based on the above structure, the separator 4 in this embodiment has the following functions: First, the separator 4 can filter and separate the electrolyte and impurities carried in the thermal runaway flue gas, so that the treated thermal runaway flue gas is a gaseous substance. When the gaseous thermal runaway flue gas enters the igniter 2 for combustion, the combustion flame is more stable, avoiding defects such as flame splashing and flame instability caused by the electrolyte and impurities in the thermal runaway flue gas burning together with combustible gas, thus improving the safety of thermal runaway flue gas combustion. Second, the separator 4 cools the thermal runaway flue gas to reduce its temperature, preventing high-temperature thermal runaway flue gas from damaging the igniter 2. Finally, after passing through the treatment liquid, the thermal runaway flue gas enters the combustion chamber at a relatively stable flow rate. When the igniter 2 ignites subsequently, the flame is relatively stable, avoiding the safety hazards of the thermal runaway flue gas not being ignited in time or the combustion flame suddenly becoming larger.

[0052] like Figure 4 As shown, based on the above structure, this embodiment can also provide a rain shield 7 on the top of the combustion cylinder 1. The rain shield 7 is fixed to the combustion cylinder 1 and covers the top of the combustion cylinder 1. That is, in the horizontal direction, the size of the rain shield 7 is larger than the size of the combustion cylinder 1. The rain shield 7 can not only protect the igniter 2 inside the combustion cylinder 1, preventing rainwater and other substances from entering the combustion cylinder 1 and affecting the performance of the igniter 2, but also protect the combustion flame when thermal runaway occurs in the battery and the thermal runaway flue gas burns inside the combustion cylinder 1, preventing rainwater and other substances from entering the combustion cylinder 1 and affecting the combustion flame.

[0053] The working process of the thermal runaway flue gas treatment device in this embodiment is as follows: When treating thermal runaway flue gas, the thermal runaway flue gas first enters the separator 4 to remove the electrolyte and solid impurities. The treated gas is discharged from the separator 4. When the discharged thermal runaway flue gas passes through the trigger 3, the trigger 3 turns on the igniter, the igniter starts to ignite, and the thermal runaway flue gas is ignited in the combustion cylinder 1 to achieve controllable and safe combustion of thermal runaway flue gas.

[0054] Example 2

[0055] like Figure 5 As shown, the thermal runaway flue gas treatment device in this embodiment is similar to the thermal runaway flue gas treatment device in Embodiment 1. The difference is that the separator in this embodiment has a different structure than the separator in Embodiment 1. In addition, the thermal runaway flue gas treatment device in this embodiment also includes a second backfire prevention device 6.

[0056] The separator in this embodiment is implemented using the following structure:

[0057] like Figure 6 As shown, the separator 4 in this embodiment includes a separation tank 41, which is provided with multiple baffles 46. The multiple baffles 46 are arranged sequentially along the flow direction of the thermal runaway flue gas. Each baffle 46 is provided with a through hole for the thermal runaway flue gas to pass through. After the thermal runaway flue gas enters the separation tank 41, the electrolyte and solids in the thermal runaway flue gas are blocked and retained in the separation tank 41 under the action of the baffles 46. The gas in the thermal runaway flue gas passes through the through hole on the baffle 46 and finally flows out through the flue gas outlet of the separation tank 41 and enters the combustion cylinder for subsequent ignition treatment.

[0058] In the aforementioned separator 41 with baffle 46, the anti-backflow pipeline of the separator 41 can be specifically set at the bottom of the separator 41, and the flue gas outlet 43 is set at the top of the separator 41 to improve the separation effect.

[0059] In this embodiment, the second backfire prevention device 6 is disposed between the trigger 3 and the separator 41. Under the combined action of the first backfire prevention device 5 and the second backfire prevention device 6, the safety during thermal runaway flue gas combustion is further enhanced. This second backfire prevention device 6 can be a device of various structural forms, as long as it can prevent the combustion flame from flowing back. Specifically, it can be a backfire prevention valve or a pipeline flame arrester. In this embodiment, the second backfire prevention device 6 is a pipeline flame arrester, which has a simple structure and is easy to install. The pipeline flame arrester can be connected to the trigger 3 and the separator 41 via threads or pipe joints.

[0060] The thermal runaway flue gas treatment device in Embodiment 1 or Embodiment 2 can be applied in energy storage devices or electric vehicle power battery packs. Specifically, it is installed outside the energy storage box of the energy storage device or outside the battery pack shell. The thermal runaway flue gas generated by thermal runaway of any battery in the energy storage device or electric vehicle power battery pack is centrally led out through a pipeline. This pipeline is connected to the separator of the thermal runaway flue gas treatment device. The separator 4 can filter and separate the electrolyte and impurities carried in the thermal runaway flue gas and discharge the separated gas to the combustion cylinder. The thermal runaway flue gas is ignited by the igniter in the combustion cylinder for controlled and safe ignition.

Claims

1. A thermal runaway smoke treatment device for an electrical device, comprising: The heat runaway smoke treatment device is mounted on the outside of the electrical equipment, and comprises a separator, a trigger and a combustion assembly connected in sequence along the flow direction of the heat runaway smoke. The combustion assembly comprises a combustion cylinder and an igniter. The igniter ignites the heat runaway smoke in the combustion cavity. The trigger is used to start the igniter when the heat runaway smoke enters the combustion cylinder. The separator is used to separate the gas in the heat runaway smoke from the electrolyte and solids, and the separated gas enters the combustion cylinder for combustion.

2. The thermal runaway smoke management apparatus of an electrical device of claim 1, wherein, The separator comprises a separation tank filled with treatment liquid, and the separation tank is provided with a smoke inlet and a smoke outlet.

3. The electrically powered device thermal runaway smoke management apparatus of claim 2, wherein, The smoke inlet is located below the liquid level of the treatment liquid, and the smoke outlet is located above the liquid level of the treatment liquid.

4. The electrically powered device's thermal runaway fume treatment apparatus of claim 3, wherein, The electrolyte and solids in the heat runaway smoke are filtered and retained in the separation tank after the heat runaway smoke enters the separation tank, and the gas flows out of the separation tank through the smoke outlet.

5. The thermal runaway smoke management apparatus of the electrical device of claim 1, wherein, The smoke inlet is connected with an anti-backflow pipeline, the outlet end of the anti-backflow pipeline is immersed in the treatment liquid, and the inlet end is located outside the separation tank and is located above the liquid level of the treatment liquid.

6. The electrically powered device's thermal runaway fume treatment apparatus of claim 5, wherein, The bottom of the separator is provided with a support frame.

7. The device of any one of claims 1 to 6, wherein the device is a battery. A first anti-backfire device is arranged between the combustion cylinder and the trigger to prevent the flame in the combustion cylinder from backflowing.

8. The electrically powered device's thermal runaway fume treatment apparatus of claim 6, wherein, A second anti-backfire device is arranged between the separator and the trigger to further prevent the combustion flame from backflowing.

9. The electrically powered device's thermal runaway fume treatment apparatus of claim 7, wherein, The separator, the trigger and the combustion cylinder are connected through a pipeline joint or a thread.

10. The thermal runaway smoke management apparatus of an electrical device of claim 9, wherein, The combustion cylinder is a cylinder with an open top and bottom, and the top is sealed by a top plate and the bottom is sealed by a bottom plate. The bottom plate is provided with a smoke pipe for delivering the heat runaway smoke into the combustion cavity. The top of the combustion cylinder is provided with a rain cover covering the top of the combustion cylinder. The igniter comprises a pulse ignition needle and a pulse generator. The pulse ignition needle is arranged at the outlet end of the smoke pipe. The pulse generator is arranged outside the combustion cylinder. The trigger is a flow switch.

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