Gas collection device and energy storage device

Abstract

The utility model relates to the technical field of gas sampling, and provides a gas collection device and an energy storage device.The gas collection device is used for collecting gas in a cavity, the gas collection device comprises a gas inlet assembly and a gas guide assembly, the gas inlet assembly comprises a fixing base and a filter, the fixing base is used for being connected to the cavity, and the fixing base is provided with an axially-penetrating guide channel; the filter is axially arranged in the guide channel in a penetrating manner, the filter is provided with an air inlet end and an air outlet end, the air inlet end extends out of one end of the fixed seat, the air outlet end is positioned at the other end of the fixed seat, and the position of the filter can be axially adjusted relative to the fixed seat, so that the air inlet end extends into different spatial positions in the cavity; the gas guide assembly is connected to the gas outlet end and is configured to guide out the gas filtered by the filter. According to the invention, flexible and effective collection of gas at different spatial positions in the cavity can be realized, and the accuracy and adaptability of gas collection are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas sampling, and particularly provides a gas collecting device and an energy storage device. BACKGROUND

[0002] In the field of battery management systems, electrical equipment, etc., it is often necessary to collect and analyze the gas components in the cavity of the equipment to realize fault early warning or environmental monitoring. The existing gas collecting device mostly adopts a fixed structure, and the sampling position is not adjustable. Since the gas concentration and composition inside the cavity change greatly with the spatial position, single position sampling is easy to lead to inaccurate sampling results, affecting the detection reliability. CONTENT OF THE UTILITY MODEL

[0003] In view of the above technical problems, the purpose of the embodiments of the present application is to provide a gas collecting device and an energy storage device, aiming at solving the problem that the gas sampling position is fixed and not adjustable in the prior art, and it is difficult to meet the gas collection requirements at different depths in the cavity.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0005] In a first aspect, the embodiments of the present application provide a gas collecting device for collecting gas in a cavity, comprising:

[0006] An air inlet assembly, comprising a fixed seat and a filter, the fixed seat is used for being connected to the cavity, the fixed seat has an axial through guide channel; the filter is axially arranged in the guide channel, the filter has an air inlet end and an air outlet end, the air inlet end extends from one end of the fixed seat, the air outlet end is located at the other end of the fixed seat, and the filter can be axially adjusted relative to the fixed seat to make the air inlet end extend into different spatial positions in the cavity;

[0007] A gas guide assembly connected to the air outlet end and configured to guide the filtered gas out of the filter.

[0008] In the above technical scheme, the axial through guide channel is arranged on the fixed seat, and the filter is adjustably arranged in the guide channel, so that the air inlet end of the filter can stably extend into different depths in the cavity according to actual needs, realizing flexible and effective collection of gas at different spatial positions in the cavity, improving the accuracy and adaptability of gas collection; at the same time, the air outlet end of the filter is connected to the gas guide assembly, so that the filtered gas can be stably guided out, ensuring the continuity and reliability of the sampling process.

[0009] In some embodiments, the filter is arranged in the guide channel in an axially telescopic manner.

[0010] In the above technical solution, the filter is arranged in the guide channel in an axially telescopic manner, the axial position of the filter can be adjusted, and thus the depth of the air inlet end extending into the cavity can be adjusted.

[0011] In some embodiments, an outer thread is arranged on the outer peripheral wall of the filter, the outer thread is located in a region between the air inlet end and the air outlet end, and an inner thread is arranged on the inner wall of the guide channel and threadedly matched with the outer thread.

[0012] In the above technical solution, the outer thread is arranged on the outer peripheral wall of the filter, and the inner thread is arranged on the inner wall of the guide channel, the rotation is converted into axial displacement by the thread pair, and continuous adjustment of the installation position of the filter is realized. The depth of the air inlet end extending into the cavity can be conveniently adjusted by rotation, and thus the gas in different space regions can be collected, and the flexibility and accuracy of sampling are significantly improved. In addition, the thread matching has a self-locking function, and can effectively prevent the filter from loosening due to vibration or airflow impact during operation, and ensure that the sampling position is stable and reliable.

[0013] In some embodiments, the axial length of the outer thread is greater than the axial length of the inner thread.

[0014] In the above technical solution, the outer thread with an axial length greater than the inner thread can obtain a greater axial adjustment stroke under the premise of ensuring reliable connection, so that the air inlet end can be fully extended out of the fixed seat, the gas collection capability of different depth regions in the cavity is effectively improved, and the applicability and flexibility of the gas collection device are enhanced.

[0015] In some embodiments, a limiting portion is arranged on the outer peripheral wall of the filter, the limiting portion is located between the outer thread and the air outlet end, and when the air inlet end of the filter extends to the deepest position in the cavity, the limiting portion abuts against the end of the fixed seat.

[0016] In the above technical solution, the limiting portion arranged on the filter can effectively prevent the filter from being excessively screwed in, and ensure that the air outlet end of the filter extends out of the fixed seat, so as to facilitate stable connection with the air guide assembly.

[0017] In some embodiments, the fixed seat comprises a main body portion and a mounting portion, the main body portion is arranged in the cavity, the main body portion has the guide channel, the mounting portion is arranged on the outer wall of the main body portion and is arranged outside the cavity, and the air inlet end and the air outlet end are respectively located at the two axial ends of the main body portion.

[0018] In the above technical solution, the main body portion is arranged in the cavity, the filter can be introduced into the cavity through the guide channel of the main body portion, and the gas in the cavity can be effectively collected, and the fixed seat can be stably arranged on the cavity through the mounting portion.

[0019] In some embodiments, the gas guide assembly comprises a gas guide pipe, one end of the gas guide pipe is connected with the gas outlet end, and the other end is used for connecting a gas receiving device.

[0020] In the above technical solution, the filtered gas can be delivered to the external gas receiving device, and the adjustable gas inlet end can be used to collect gas at different positions of the cavity, thereby facilitating effective and accurate analysis of the gas distribution and diffusion process in the cavity.

[0021] In some embodiments, the gas guide assembly comprises a diversion head, the diversion head has a flow channel and a gas inlet and a gas outlet connected to the flow channel, the openings of the gas inlet and the gas outlet are oriented in different directions, the gas inlet is connected with the gas outlet end, and the gas outlet is connected with one end of the gas guide pipe.

[0022] In the above technical solution, by providing a diversion head in the gas guide assembly, the gas flow from the filter outlet end is diverted by the internal flow channel, so that the gas guide pipe can select the pipe arrangement direction according to the actual installation space requirement, effectively avoiding the pipe bending, interference or installation difficulty caused by limited space, and significantly improving the assembly convenience and layout flexibility of the gas collecting device in a narrow or complex environment.

[0023] In some embodiments, the fixing seat comprises a main body portion and a mounting portion, the main body portion is used for penetrating the cavity, the main body portion has the guide channel, and the gas inlet end and the gas outlet end are respectively located at two ends of the main body portion along the axial direction; the mounting portion is a first flange, which is arranged on an outer wall of one end of the main body portion adjacent to the gas outlet end and is used for mounting outside the cavity.

[0024] The diversion head comprises an end cover and a second flange, the end cover is internally provided with the axially extending flow channel, one end of the end cover along the axial direction is provided with the gas inlet, a side wall of the end cover is provided with the gas outlet, the gas outlet end penetrates the gas inlet and extends into the flow channel, and the second flange is arranged on a side wall of one end of the end cover adjacent to the gas inlet and is detachably connected with the first flange.

[0025] In the above technical solution, the first flange is arranged on the fixing seat, and the second flange is arranged on the diversion head, so that detachable connection between the two can be achieved. This design allows the diversion head to be temporarily detached during filter adjustment, and then reinstalled after adjustment is completed, effectively avoiding the interference of the gas guide assembly on the adjustment operation, and significantly improving the convenience of sampling position adjustment.

[0026] In some embodiments, the diversion head can rotate relative to the fixing seat around the axial direction.

[0027] In the technical solution, the turning head can rotate relative to the fixed seat around the axis, so that the space direction of the gas outlet can be flexibly adjusted in the circumferential direction. During installation, the position of the fixed seat or the filter does not need to be changed, and the leading direction of the gas guide pipe can be adjusted by only rotating the turning head, effectively avoiding the problems of pipe bending, interference or installation difficulty caused by limited space, and significantly improving the pipe layout freedom and installation convenience of the gas collection device in a narrow or complex environment.

[0028] In some embodiments, a first seal is arranged between the first flange and the second flange.

[0029] In the technical solution, the first seal arranged between the first flange and the second flange can effectively fill the gap between the abutting surfaces of the two, improve the air tightness of the connection, prevent leakage of the sampling gas during transmission, ensure the integrity and authenticity of the gas, and improve the accuracy and reliability of subsequent component analysis.

[0030] In some embodiments, the axial length of the end cover is greater than the maximum axial length of the gas outlet end of the filter protruding from one end surface of the main body part.

[0031] In the technical solution, the axial length of the end cover is greater than the maximum axial length of the gas outlet end of the filter protruding from the main body part. When the filter is screwed into the cavity, the end cover of the turning head can always cover the gas outlet end, and reliable connection is achieved through the flanges and the seal, effectively avoiding the problems of gas path disconnection or poor sealing caused by adjustment, and ensuring the sealing of the gas transmission path.

[0032] In some embodiments, the gas guide assembly includes a joint component, the joint component includes a third flange and a adapter head, the third flange is arranged on the outer wall of the other end of the gas guide pipe, the adapter head includes a fourth flange and an adapter pipe, the fourth flange is arranged on the outer wall of one end of the adapter pipe and is detachably connected with the third flange, one end of the adapter pipe is connected with the other end of the gas guide pipe, and the other end of the adapter pipe is used to connect a gas receiving device.

[0033] In the technical solution, the joint component is arranged in the gas guide assembly to achieve detachable connection between the gas guide pipe and the gas receiving device. Different types of adapter heads can be replaced according to actual needs to adapt to different types of gas receiving devices, significantly improving the versatility and facilitating on-site maintenance and rapid deployment.

[0034] In some embodiments, the pipe diameter of the gas guide pipe is different from the pipe diameter of the adapter pipe.

[0035] In the technical solution, the pipe diameter of the gas guide pipe is different from the pipe diameter of the adapter pipe, forming a variable-diameter gas passage, which can adjust the flow rate and flow of the gas in the transmission process, thereby meeting the gas intake demand of the gas receiving device. Moreover, without changing the gas guide pipe, the flow rate and flow can be flexibly adjusted by replacing the adapter pipe with different pipe diameters, significantly enhancing the adaptability and control ability of the gas collection device, and being convenient to use.

[0036] In some embodiments, a second sealing member is arranged between the third flange and the fourth flange.

[0037] In the technical solution, the second sealing member is arranged between the third flange and the fourth flange, effectively sealing the interface gap at the connection between the gas guide pipe and the adapter pipe, improving the air tightness of the connection, preventing gas leakage at the transmission end, ensuring the integrity and authenticity of the gas, and improving the accuracy and reliability of subsequent component analysis.

[0038] In a second aspect, the embodiments of the present application also provide an energy storage device, comprising: a cabin body, a plurality of battery devices, and the gas collection device described above, wherein the cabin body comprises the cavity, the battery devices are arranged in the cabin body, and the gas collection device is used to collect the gas generated by the thermal runaway of the battery devices at different spatial positions in the cabin body.

[0039] In the technical solution, the gas collection device can accurately collect the gas concentration and components at different spatial positions during the thermal runaway of the battery devices in the cabin environment of the energy storage device, which helps to analyze the distribution rule and diffusion dynamics of the flammable gas during the thermal runaway, thereby improving the accuracy and reliability of subsequent thermal runaway simulation tests.

[0040] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the embodiments can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following will describe the specific embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0042] Figure 1 The structural schematic diagram of the gas collection device provided by the embodiments of the present application is shown in the figure.

[0043] Figure 2A structural schematic view of a filter provided by the embodiment of the present application in an initial position;

[0044] Figure 3 A structural schematic view of a filter provided by the embodiment of the present application in a terminal position;

[0045] Figure 4 A structural schematic view of an energy storage device provided by the embodiment of the present application.

[0046] In the drawings, various reference numerals refer to:

[0047] 1. A gas collecting device;

[0048] 11. An air inlet assembly; 111, a fixing seat; 1111, a guide channel; 1112, a main body;

[0049] 1113, a mounting portion; 11131, a first connecting hole; 112, a filter; 1121, an air inlet end;

[0050] 1122, an air outlet end; 1123, an external thread; 1124, a limiting portion;

[0051] 12. A gas guiding assembly; 121, a gas guiding pipe; 122, a turning head; 1221, an end cover;

[0052] 1222, a second flange; 12221, a second connecting hole; 123, a first sealing member;

[0053] 1231, a fifth connecting hole; 124, a joint component; 1241, a third flange;

[0054] 12411, a third connecting hole; 1242, an adapter; 12421, a fourth flange; 12422, an adapter pipe;

[0055] 12423, a fourth connecting hole; 125, a second sealing member; 1251, a sixth connecting hole;

[0056] 2. A cavity; 21, a shelf;

[0057] 3. A gas receiving device; 31, a conveying pipeline;

[0058] 4. A battery device. DETAILED DESCRIPTION

[0059] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise required by context, singular terms shall include pluralities and vice versa. Unless otherwise required by context, the use herein of the singular is also to be construed as a use of the plural and vice versa.

[0061] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0062] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to a particular embodiment, or to a particular set of embodiments, and is not necessarily mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0063] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0064] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0065] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as limiting the embodiments of the present application, which do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0066] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mount", "connect", "connect", "fix" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0067] In the field of battery management systems, electrical equipment, etc., it is often necessary to collect and analyze the gas components in the device cavity to achieve fault warning or environmental monitoring. The existing gas collection device mostly adopts a fixed structure, and the sampling position cannot be adjusted, so it can only collect gas at a single depth area in the cavity. However, the gas concentration and composition at different spatial positions inside the cavity can be significantly different. For example, during the thermal runaway process of a battery device, flammable gas often first generates in a local area (such as near the battery device) and gradually accumulates upwards. The fixed sampling device is difficult to fully reflect the gas distribution state inside the cavity due to the fixed sampling point position, which can easily lead to inaccurate sampling results and affect the detection reliability.

[0068] Therefore, the embodiments of the present application provide a gas collection device with simple structure and adjustable sampling depth, which can realize the collection of gas at multiple positions by setting an axially adjustable filter so that the gas inlet end can extend into the cavity at different depths, thereby improving the accuracy and adaptability of sampling.

[0069] In some embodiments, Figure 1 The structure diagram of the gas collection device provided by the embodiments of the present application is shown in Figure 4 The structure diagram of the energy storage device provided by the embodiments of the present application is shown in Figure 1 and Figure 4 As shown in FIGS. 1 to 4, the embodiments of the present application provide a gas collection device 1 for collecting gas in a cavity 2, which includes an air inlet assembly 11 and a gas guide assembly 12. The air inlet assembly 11 includes a fixed seat 111 and a filter 112. The fixed seat 111 is used to be connected to the cavity 2, and the fixed seat 111 has an axial guide channel 1111. The filter 112 is arranged in the guide channel 1111 along the axial direction Z. The filter 112 has an air inlet end 1121 and an air outlet end 1122. The air inlet end 1121 extends from one end of the fixed seat 111, and the air outlet end 1122 is located at the other end of the fixed seat 111. The filter 112 can be adjusted in position relative to the fixed seat 111 in the axial direction Z, so that the air inlet end 1121 extends into different spatial positions in the cavity 2. The gas guide assembly 12 is connected to the air outlet end 1122 and is configured to guide the filtered gas through the filter 112.

[0070] The cavity 2 refers to a space capable of limiting the free diffusion of internal gas and being relatively isolated from the external environment, which can be a sealed cavity. In some examples, the gas collection device 1 of the present application can be applied to the battery compartment, battery cabinet, battery device shell, battery box, reaction kettle, chemical storage tank, pipeline, experimental cabin and other equipment of the energy storage device, which can include the cavity 2. The cavity 2 can be made of metal, engineering plastic or composite material, etc., and has a certain airtightness, and the wall body can be provided with a mounting hole for the filter 112 of the gas collection device 1 to pass through to extend into the cavity 2.

[0071] The fixed seat 111 is used as the mounting base of the entire gas collection device 1, and is connected to the wall body of the cavity 2. Alternatively, the fixed seat 111 can be passed through the mounting hole in the wall body of the cavity 2, so that the filter 112 can be guided to extend into the cavity 2 through the guide channel 1111 inside the fixed seat 111. Alternatively, the fixed seat 111 can be arranged outside the wall body of the cavity 2, and the guide channel 1111 corresponds to the mounting hole in the wall body of the cavity 2, so that the filter 112 can extend into the cavity 2 through the mounting hole through the guide channel 1111.

[0072] The fixed seat 111 has an axial Z through guide channel 1111 inside, and the axial Z refers to the length direction of the filter 112. The through guide channel 1111 has openings at both ends of the axial Z, so that the filter 112 can extend into the guide channel 1111 from one end opening and extend out from the other end opening, so as to extend and retract in the guide channel 1111 along the axial Z to adjust the mounting position. The guide channel 1111 can provide guidance and support for the filter 112 to ensure that the filter 112 does not deviate or shake during adjustment, thereby improving the adjustment stability.

[0073] The filter 112 refers to a component that can filter gas and direct the gas to exit as a whole. The filter 112 can be filtered as a whole, or partially filtered, and the remaining part can guide the gas. The filter 112 can be a filter rod, which can be axially Z passed through the guide channel 1111. The filter 112 has an air inlet end 1121 that can extend into the cavity 2 and an air outlet end 1122 that is located outside the fixed seat 111. The air inlet end 1121 refers to one end of the filter 112 having an air inlet, and the air outlet end 1122 refers to one end of the filter 112 having an air outlet. The filter 112 has a filter core inside for filtering dust, particulate matter and other impurities in the gas to prevent the impurities from entering the subsequent gas guiding assembly 12 and causing blockage, thereby avoiding affecting the sampling accuracy. Moreover, the filter 112 can move axially Z relative to the fixed seat 111 to adjust the mounting position and change the position of the air inlet end 1121 extending into the cavity 2. In some examples, the filter 112 can be positionally set by screwing, sliding locking or the like. For example, as shown in FIG. 1, the filter 112 can be axially Z screwed into the fixed seat 111 through the guide channel 1111, and the air inlet end 1121 of the filter 112 can extend into the cavity 2 through the mounting hole in the wall body of the cavity 2. Figure 1As shown, the filter 112 is screwed into the guide channel 1111, and the axial position is adjusted by rotating the filter 112. For example, the filter 112 can slide along the axial direction Z in the guide channel 1111; the outer wall of the fixed seat 111 is provided with a locking hole penetrating the guide channel 1111 in the radial direction, and an internal locking member (such as a locking screw or an elastic clamp) is arranged in the locking hole; during adjustment, the locking member is loosened first, and then the filter 112 is pushed along the axial direction Z to the target position; after adjustment, the locking member is tightened to press the outer wall of the filter 112, thereby achieving fixation. In addition, a scale mark can be arranged on the outer circumferential wall of the filter 112 to indicate different sampling depths, thereby facilitating accurate adjustment. The filter 112 can be made of a high-temperature-resistant and corrosion-resistant material. The length of the filter 112 can be designed and adjusted according to actual needs.

[0074] The air guide assembly 12 is connected to the air outlet end 1122 of the filter 112, and is used to stably guide the filtered gas to the external gas receiving device 3 (such as a gas analyzer or a gas bag).

[0075] The working principle of the gas collecting device 1 provided by the embodiment of the present application will be described below.

[0076] The installation stage: the fixed seat 111 is installed at the installation hole on the cavity 2, the axial position of the filter 112 in the guide channel 1111 of the fixed seat is adjusted according to the target sampling position, and after adjustment, the air inlet end 1121 of the filter 112 extends into the cavity 2 to the specified depth.

[0077] The sampling stage: under the action of the gas pressure difference, the gas in the cavity 2 enters the filter 112 through the air inlet end 1121, and the gas is filtered by the filter element in the filter 112 to remove dust, particulate matter and other impurities; the purified gas is discharged from the air outlet end 1122 and enters the air guide assembly 12.

[0078] The discharge stage: the air guide assembly 12 stably transports the filtered gas to the external gas receiving device 3, thereby realizing continuous and reliable analysis of the gas composition.

[0079] If the sampling depth needs to be changed, the filter 112 is moved axially along the direction Z, and the position is reset. For example, the filter 112 is adjusted upward to move the air inlet end 1121 to the target area from the middle area to the top area of the cavity 2. Conversely, the filter 112 is adjusted downward to move the air inlet end 1121 to the target area.

[0080] Therefore, the gas collection device 1 provided by the embodiment of the present application can solve the problem of fixed sampling position of the existing gas collection device 1 and the difficulty in adapting to gas collection of different depths, by adjustably threading the filter 112 in the guide channel 1111 of the fixed seat 111, so that the air inlet end 1121 of the filter 112 can extend into the cavity 2 to different depths according to actual needs. The present application realizes flexible and accurate collection of gas in different spatial regions in the cavity 2, and improves the accuracy and reliability of the sampling results. At the same time, the guide channel 1111 provides stable guidance for the filter 112, ensuring smooth and controllable adjustment process. In cooperation with the air guide assembly 12, the filtered gas can be efficiently guided out to the external gas receiving device 3, ensuring the continuity and integrity of the sampling. The overall structure of the gas collection device 1 of the present application is simple, easy to assemble, and has strong versatility, and is suitable for gas monitoring and analysis in sealed spaces such as batteries and electrical equipment.

[0081] In some embodiments, referring to Figure 1 As shown, the outer periphery wall of the filter 112 is provided with an external thread 1123, and the inner wall of the guide channel 1111 is provided with an internal thread that threadedly cooperates with the external thread 1123.

[0082] The external thread 1123 on the outer periphery wall of the filter 112 is arranged in the region between the air inlet end 1121 and the air outlet end 1122, which does not affect air inlet and air outlet, and can provide a certain thread engagement length to ensure position adjustment. The internal thread of the inner wall of the guide channel 1111 forms a thread pair with the external thread 1123, which is used to convert the rotational motion of the filter 112 into axial linear motion, thereby realizing continuous adjustment of the installation position of the filter 112. Specifically, during adjustment, the filter 112 can be moved along the axial direction Z by rotating it, and the depth of the filter air inlet end 1121 extending into the cavity 2 can be accurately controlled by controlling the number of turns (each turn of the thread corresponds to a fixed stroke). When the adjustment is in place, the filter 112 can be prevented from loosening due to vibration or airflow impact by the self-locking action of the thread, ensuring stable and reliable sampling position.

[0083] Therefore, the embodiment of the present application can adjust the depth of the filter air inlet end 1121 extending into the cavity 2 by simple rotation, thereby collecting gas for different spatial regions, improving the flexibility and accuracy of sampling. The present application has the characteristics of high adjustment accuracy, convenient operation, and no need for additional locking parts.

[0084] In some embodiments, the outer periphery wall of the filter air outlet end 1122 can be provided with an external thread 1123.

[0085] In some embodiments, referring to Figure 1 As shown, the axial length of the external thread 1123 is greater than the axial length of the internal thread.

[0086] The axial length of the external thread 1123 on the outer peripheral wall of the filter 112 is relatively long, so that a larger adjustment range can be covered, while the axial length of the internal thread on the inner wall of the guide channel 1111 of the fixing seat is relatively short, serving as a matching section to ensure the axial position adjustment of the filter 112.

[0087] In the embodiments of the present application, the external thread 1123 is provided with an axial length greater than that of the internal thread, so that a larger axial adjustment stroke can be obtained under the premise of ensuring reliable connection, and the air inlet end 1121 of the filter 112 can be fully extended out of the fixing seat 111, effectively improving the collection capability of the gas in different depth regions in the cavity 2, realizing large-range depth adjustment in the cavity 2, and enhancing the applicability and flexibility of the gas collection device.

[0088] In some embodiments, Figure 2 A structural schematic view of the filter in an initial position is provided for the embodiments of the present application. Figure 3 A structural schematic view of the filter in a terminal position is provided for the embodiments of the present application. As shown in Figures 1 to 3 The outer peripheral wall of the filter 112 is provided with a limiting portion 1124, which is located between the external thread 1123 and the air outlet end 1122. When the air inlet end 1121 of the filter 112 is extended to the deepest position in the cavity 2, the limiting portion 1124 abuts against the end of the fixing seat 111.

[0089] The limiting portion 1124 refers to a radially outwardly extending limiting structure provided on the outer wall of the filter 112 adjacent to the air outlet end 1122, which is used to abut against the end face of the main body portion 1112 of the fixing seat 111 during the adjustment of the filter 112, so as to limit the axial movement stroke and realize accurate positioning of the maximum insertion depth. The limiting portion 1124 has a lower end face for stopping. When the filter 112 is rotated in the axial direction Z to the terminal position, the end face contacts the upper end face of the main body portion 1112 of the fixing seat, preventing the filter 112 from further entering the cavity 2, as shown in Figure 3 In some examples, the limiting portion 1124 can include but is not limited to the following structural forms: an annular flange, a local flange, an elastic stop ring, etc. Among them, the annular flange is a continuous annular protrusion provided around the outer periphery of the filter 112. The local flange is a local protrusion provided on the outer wall of the filter 112, and multiple (such as 2-4) local flanges can be arranged at intervals. The elastic stop ring is an annular stop ring structure provided on the outer wall of the filter 112 and having elasticity. In some examples, the limiting portion 1124 can be integrally formed with the filter 112.

[0090] As shown in Figure 2As shown, the initial position of the filter 112 refers to a position during the process of the filter 112 being screwed into the guide channel 1111 of the fixed seat 111 along the axial direction Z, at which the air inlet end 1121 of the filter 112 just protrudes out of the lower end surface of the fixed seat 111 completely, and the outer thread 1123 does not exceed the lower end surface of the fixed seat 111. At the initial position, the air inlet end 1121 of the filter 112 is exposed in the cavity 2, having the ability of gas collection; at the same time, the air outlet end 1122 of the filter 112 protrudes out of the upper end surface of the fixed seat 111 to the maximum length, and can be effectively connected with the air guide assembly 12. It can be understood that the initial position is the starting reference point of the adjustment stroke of the filter 112, at which the limiting portion 1124 has not contacted the upper end surface of the fixed seat 111, and is in a free state. The filter 112 can be screwed down from the initial position to increase the depth of the filter 112 in the cavity 2, to adapt to different sampling requirements.

[0091] As shown in Figure 3 , the terminal position of the filter 112 refers to the limit position of the filter 112 being screwed into the fixed seat 111 along the axial direction. When the filter 112 is continuously screwed in along the axial direction Z, the limiting portion 1124 on the filter 112 gradually approaches the upper end of the fixed seat 111; when the limiting portion 1124 completely abuts against the upper end of the fixed seat 111, the limiting is formed, so that the filter 112 cannot continue to move inward, and the terminal position is reached at this time. At the terminal position, the air inlet end 1121 of the filter 112 reaches the deepest position in the cavity 2. The adjustment stroke of the filter 112 is the difference between the length of the air inlet end 1121 protruding out at the terminal position and the length of the air inlet end 1121 protruding out at the initial position.

[0092] Therefore, by arranging the limiting portion 1124 on the filter 112, the filter 112 can be effectively prevented from being screwed in excessively, and the air outlet end 1122 of the filter 112 can be ensured to protrude out of the fixed seat 111, so as to facilitate the stable connection with the air guide assembly 12.

[0093] In some embodiments, referring to Figures 1 to 3 , the fixed seat 111 includes a main body portion 1112 and a mounting portion 1113. The main body portion 1112 is arranged to be penetrated in the cavity 2, and has the guide channel 1111. The mounting portion 1113 is arranged on the outer wall of the main body portion 1112, and is arranged to be mounted outside the cavity 2. The air inlet end 1121 and the air outlet end 1122 are respectively arranged at the two ends of the main body portion 1112 along the axial direction Z.

[0094] The main body portion 1112 is a hollow cylindrical structure, and is arranged to be penetrated in the mounting hole of the cavity 2. The main body portion 1112 is internally provided with the guide channel 1111 which is axially penetrated, and is arranged to penetrate the filter 112. The air inlet end 1121 and the air outlet end 1122 are respectively arranged to protrude out of the two ends of the main body portion 1112, so that the gas can be collected in the cavity 2 and guided out.

[0095] The mounting part 1113 can adopt various structural forms, such as: annular flange, welded boss, external thread section, or snap-fit ​​structure. When the mounting part 1113 is an annular flange, it can be pressed against the outside of the cavity 2 by bolts; when the mounting part 1113 is a welded boss, it can be connected by welding; when the mounting part 1113 is an external thread section, it can be threadedly connected to the internal thread section of the mounting hole inner wall of the cavity 2. When the mounting part 1113 is a snap-fit ​​structure, it can be snapped into place with a retaining ring on the cavity 2.

[0096] In one example, during installation, mounting holes can be made in the wall of the cavity 2. The main body 1112 of the fixing base 111 is inserted into the mounting hole, with one end extending into the cavity 2 and the other end located outside the cavity 2. The mounting part 1113 is welded and fixed to the outer wall of the cavity 2. The filter 112 is inserted from the outside along the guide channel 1111, with the air inlet end 1121 extending into the cavity 2 and the air outlet end 1122 located outside the cavity 2. The air guide assembly 12 is connected to the air outlet end 1122 to complete the gas outlet passage.

[0097] In some embodiments, sealing structures (such as O-rings, sealants, gaskets, etc.) may be provided between the main body 1112 and the mounting hole, and between the mounting part 1113 and the cavity 2, to prevent gas leakage.

[0098] In some embodiments, the mounting base 111 adopts an integrated design of the main body 1112 and the mounting part 1113.

[0099] Therefore, in this embodiment of the application, the filter 112 can be stably installed on the cavity 2 by means of the fixing seat 111, so as to achieve effective gas collection.

[0100] In some embodiments, refer to Figure 1 As shown, the gas guiding assembly 12 includes a gas guiding pipe 121, one end of which is connected to the gas outlet 1122, and the other end is used to connect to the gas receiving device 3.

[0101] The gas guide tube 121 can be a flexible or rigid pipe used to transmit filtered gas; the material can be stainless steel, PTFE (polytetrafluoroethylene), silicone, etc., and has corrosion resistance and low adsorption properties. One end of the gas guide tube 121 can be sealed to the gas outlet 1122 of the filter 112 through threads, quick-connect fittings, ferrules, etc., and the other end can be adapted to an external gas receiving device 3 through a connector component 124 to ensure leak-free gas transmission.

[0102] The gas receiving device 3 can be a gas analyzer, a combustible gas alarm, a gas sensor, a gas bag, etc. The gas analyzer can be a gas chromatograph, a mass spectrometer, etc., which can be used to accurately analyze the gas composition and concentration, and identify the gas type (such as H2, CO, CH4, etc.). The combustible gas alarm is used to monitor the combustible gas concentration in real time, and realize early warning. The gas sensor is used to convert the information such as the composition and concentration of the gas into corresponding electrical signals, which is convenient for subsequent analysis by instruments, computers, etc. The gas bag is used for temporary storage of gas, which is convenient for subsequent centralized analysis or inspection.

[0103] In one example, in operation, the filter 112 collects the gas in the cavity 2 through the gas inlet end 1121, filters the impurities in the gas, and the filtered clean gas enters the gas guide pipe 121 through the gas outlet end 1122 and is transported to the gas analyzer. During sampling, by adjusting the depth of the filter gas inlet end 1121, gas can be collected at different areas such as the bottom, middle and top of the cavity 2, so that the gas at different positions is introduced into the gas analyzer respectively to analyze the distribution rule and diffusion trend of the gas. For example, during the thermal runaway process of the energy storage device, the thermal runaway gas is usually generated near the battery device 4 first, and then diffuses upward. By multi-point sampling, it can be determined whether the fault is in the initial local gas production or has spread.

[0104] Therefore, by arranging the gas guide assembly 12, the filtered gas is stably guided out of the cavity 2 to the external gas receiving device 3, realizing efficient connection between internal sampling and external analysis.

[0105] In some embodiments, referring to Figure 1 The gas guide assembly 12 includes a diversion head 122, the diversion head 122 has a flow channel, and a gas inlet and a gas outlet are communicated with the flow channel, the openings of the gas inlet and the gas outlet are oriented in different directions, the gas inlet is connected with the gas outlet end 1122, and the gas outlet is connected with one end of the gas guide pipe 121.

[0106] The diversion head 122 is a kind of connecting joint with an internal flow channel, which can be a straight head, an elbow, etc. The flow channel in the diversion head 122 is used for gas flow. The gas inlet of the diversion head 122 can be connected with the gas outlet end 1122 of the filter 112 through threads, quick plug joints, etc., and the gas outlet of the diversion head 122 can be connected with one end of the gas guide pipe 121 through threads, quick plug joints, etc. Alternatively, the diversion head 122 and the gas guide pipe 121 are integrally formed. The material of the diversion head 122 can be stainless steel or engineering plastic, etc., which has corrosion resistance and low adsorption characteristics.

[0107] The openings of the gas inlet and the gas outlet of the diversion head 122 are oriented in different directions, which means that the central axes of the gas inlet and the gas outlet are not collinear or have an included angle, the included angle is greater than 0° and less than 180°, for example, it can be 45°, 90°, 135°, etc. As an example, referring toFigure 1 As shown, the air inlet is connected to the filter outlet end 1122 along the axial direction Z, and the air outlet extends from the side wall of the turning head 122, so that the air guide pipe 121 can be arranged in the transverse direction. As shown, Figure 4 As shown, in the energy storage device, a plurality of gas collection devices 1 can be installed side by side on the top of the battery cabin, at this time, if the air guide pipes 121 of each device need to be led out to the same side, the traditional straight-through joint structure will cause the pipeline to be bent and pressed. However, after the turning head 122 is used, Figure 1 As shown, after the turning head 122 is used, all the air guide pipes 121 can be uniformly led out to the side, the wiring is neat, and the installation is convenient.

[0108] In operation, the filtered gas from the filter outlet end 1122 enters the air inlet of the turning head 122, flows along the internal flow channel of the turning head 122, and flows out from the air outlet into the air guide pipe 121, which delivers the gas to the external gas receiving device 3.

[0109] The embodiment of the present application provides a turning head 122 in the air guide assembly 12, which turns the flow direction of the gas from the filter outlet end 1122 by using the internal flow channel, so that the air guide pipe 121 can select the pipe arrangement direction according to the actual installation space requirement, effectively avoids the pipeline bending, interference or installation difficulty caused by limited space, and significantly improves the assembly convenience and layout flexibility of the gas collection device 1 in a narrow or complex environment.

[0110] In some embodiments, referring to Figure 1 As shown, the fixing seat 111 includes a main body part 1112 and a mounting part 1113, the main body part 1112 is used to be penetrated in the cavity 2, the main body part 1112 has a guide channel 1111, and the air inlet end 1121 and the air outlet end 1122 are respectively located at two ends of the main body part 1112 along the axial direction Z; the mounting part 1113 is a first flange, which is arranged on the outer wall of one end of the main body part 1112 adjacent to the air outlet end 1122 and is used to be mounted outside the cavity 2; the turning head 122 includes an end cover 1221 and a second flange 1222, the end cover 1221 is internally provided with an axial Z extending flow channel, one end of the end cover 1221 along the axial direction Z is provided with an air inlet, and the side wall of the end cover 1221 is provided with an air outlet, the air outlet end 1122 penetrates the air inlet and extends into the flow channel, and the second flange 1222 is arranged on the side wall of one end of the end cover 1221 adjacent to the air inlet and is detachably connected with the first flange.

[0111] The main body part 1112 is a hollow cylindrical structure, which is used to be penetrated in the mounting hole of the cavity 2; the main body part 1112 is internally provided with an axial through guide channel 1111 for penetrating the filter 112, and the air inlet end 1121 and the air outlet end 1122 are respectively exposed at two ends of the main body part 1112, so that the gas can be collected and guided out in the cavity 2. The mounting part 1113 is a first flange, and a plurality of first connecting holes 11131 can be arranged on the first flange in intervals.

[0112] The end cover 1221 of the turning head 122 is provided with an air inlet, and the sidewall of the end cover 1221 is provided with an air outlet, so as to realize the change of the airflow direction from the axial direction to the radial direction. The second flange 1222 is arranged at the air inlet side of the end cover 1221, and the second flange 1222 can be provided with a second connecting hole 12221 corresponding to the first connecting hole 11131. The first flange and the second flange 1222 are fastened and connected by means of bolts or other fasteners penetrating the first connecting hole 11131 and the second connecting hole 12221. In some examples, the end cover 1221 of the turning head 122 is designed in one piece with the second flange 1222.

[0113] In one example, a mounting hole can be formed in the wall of the cavity 2, and the main body 1112 of the fixing seat 111 is inserted into the mounting hole, with one end extending into the cavity 2 and the other end located outside the cavity 2. The first flange is welded and fixed to the outer wall of the cavity 2, and the turning head 122 has not been installed at this time. The filter 112 is inserted into the guiding channel 1111 from the outside, with the air inlet end 1121 extending into the cavity 2 and the air outlet end 1122 located outside the cavity 2. According to the target sampling position, the axial position of the filter 112 is adjusted so that the air inlet end 1121 extends to the target position in the cavity 2. After the adjustment is completed, the turning head 122 covers the air outlet end 1122, and the second flange 1222 of the turning head 122 is aligned with the first flange of the fixing seat 111, and the bolts are fastened. The gas guide pipe 121 is integrally formed with the turning head 122, and at this time, the gas guide pipe 121 is connected to the external gas receiving device 3. If the sampling position needs to be changed later, the flange connection can be disassembled, the turning head 122 is removed, the position of the filter 112 is adjusted again, and the turning head 122 is reinstalled, without the need to disassemble the entire gas collecting device 1.

[0114] Therefore, the first flange is arranged on the fixing seat 111, and the second flange 1222 is arranged on the turning head 122, so as to realize the detachable connection between the fixing seat 111 and the gas guide assembly 12. This design enables the turning head 122 to be temporarily disassembled during the adjustment of the filter 112, and then reinstalled after the adjustment is completed, effectively avoiding the interference of the gas guide assembly 12 with the adjustment operation, and significantly improving the convenience of sampling position adjustment and component maintenance.

[0115] In some embodiments, referring to Figure 1 The turning head 122 can rotate relative to the fixing seat 111 around the axial direction Z.

[0116] The embodiment of the present application can rotate the steering head 122 relative to the fixed seat 111 around the axis Z, so that the space direction of the gas outlet can be flexibly adjusted in the circumferential direction, that is, the gas outlet can be positioned at any angle within a range of 360°, which is suitable for different pipe arrangement directions. After the adjustment is completed, the fastening of the first flange and the second flange 1222 is realized through bolts and other fasteners. It can be understood that during the installation process, the position of the fixed seat 111 or the filter 112 does not need to be changed, and only the steering head 122 needs to be rotated to adjust the leading direction of the gas guide pipe 121, effectively avoiding the problems of pipe bending, interference or installation difficulty caused by limited space, and significantly improving the pipe arrangement freedom and installation convenience of the gas collection device 1 in a small or complex environment.

[0117] In some embodiments, referring to Figure 1 , a first sealing member 123 is arranged between the first flange and the second flange 1222.

[0118] In some examples, the first sealing member 123 can be a sealing ring (such as an O-ring, a rectangular ring, etc.), a sealing gasket, a sealing glue, etc. As an example, as shown in Figure 1 , the first sealing member 123 is a sealing ring, and the sealing ring is provided with a fifth connecting hole 1231 corresponding to the first connecting hole 11131 and the second connecting hole 12221. The first connecting hole 11131, the fifth connecting hole 1231 and the second connecting hole 12221 can be penetrated by bolts and other fasteners to seal and connect the first flange, the first sealing member 123 and the second flange 1222. In addition, the hole diameter of the through hole in the middle of the sealing ring is greater than the outer diameter of the limiting portion 1124 on the filter 112, so that when the filter 112 moves in the axial direction Z to adjust the position, the limiting portion 1124 can pass through the sealing ring, avoiding affecting the position adjustment of the filter 112 and the installation of the steering head 122, and ensuring the tight connection of the sealing ring with the first flange and the second flange 1222. In addition, the limiting portion 1124 is located in the flow channel of the steering head 122.

[0119] In some examples, the end surface of the first flange and / or the second flange 1222 is provided with a sealing groove for accommodating the first sealing member 123, so as to realize the positioning and installation of the first sealing member 123.

[0120] By arranging the first sealing member 123 between the first flange and the second flange 1222, the gap between the abutting surfaces of the two can be effectively filled, the air tightness of the connection is improved, the leakage of the sampling gas during transmission is prevented, the integrity and authenticity of the gas are ensured, and the accuracy and reliability of the subsequent component analysis are improved.

[0121] In some embodiments, referring to Figure 1 and Figure 2As shown, when the filter 112 is in the initial position, the axial length of the end cap 1221 is greater than the maximum axial length of the air outlet end 1122 of the filter 112 extending out of one end face of the main body 1112.

[0122] like Figure 2 As shown, the axial length of the air outlet 1122 extending from one end face of the main body 1112 refers to the axial distance between the upper end face of the main body 1112 and the top of the air outlet 1122.

[0123] Understandably, if the end cap 1221 of the steering head 122 is too short and the air outlet 1122 of the filter extends too far, the end cap 1221 cannot completely cover the air outlet 1122, resulting in an incomplete seal at the air inlet and a risk of air leakage. Therefore, when the filter 112 is in its initial position, the length of its air outlet 1122 extending from the upper end face of the fixed base body 1112 reaches its maximum. To ensure that the end cap 1221 of the steering head 122 can still form a reliable sealed connection with the air outlet 1122 in this state, the axial length of the end cap 1221 is configured to be greater than this maximum extension length. Thus, when the filter 112 is screwed into the cavity from its initial position, its air outlet 1122 can be effectively accommodated by the end cap 1221, ensuring the continuity and airtightness of the gas passage.

[0124] In some embodiments, refer to Figure 1 As shown, the gas guiding assembly 12 includes a connector component 124, which includes a third flange 1241 and an adapter 1242. The third flange 1241 is located on the outer wall of the other end of the gas guiding pipe 121. The adapter 1242 includes a fourth flange 12421 and an adapter pipe 12422. The fourth flange 12421 is located on the outer wall of one end of the adapter pipe 12422 and is detachably connected to the third flange 1241. One end of the adapter pipe 12422 is connected to the other end of the gas guiding pipe 121, and the other end of the adapter pipe 12422 is used to connect to the gas receiving device 3.

[0125] The gas guide pipe 121 is connected to the gas outlet on the steering head end cover 1221 at one end and is provided with a third flange 1241 at the other end. The third flange 1241 can be provided with a plurality of third connecting holes 12411 arranged at intervals. The adapter 1242 is a replaceable module and can be an integrally formed structure. The fourth flange 12421 of the adapter 1242 is arranged on the outer wall of one end of the adapter pipe 12422. The fourth flange 12421 can be provided with fourth connecting holes 12423 corresponding to the third connecting holes 12411. The third connecting holes 12411 and the fourth connecting holes 12423 are connected by a fastener such as a bolt, thereby achieving fastening and connection of the third flange 1241 and the fourth flange 12421. Thus, one end of the adapter pipe 12422 is connected to the other end of the gas guide pipe 121. The other end of the adapter pipe 12422 can be connected to the gas receiving device 3 through a matching conveying pipe 31.

[0126] It can be understood that, since different gas receiving devices 3 are provided with different conveying pipes 31, the adapter pipe 12422 matched with the conveying pipe 31 can be replaced, so as to adapt to the gas receiving device 3 such as a gas analyzer, a gas sensor, and a gas bag.

[0127] Therefore, the adapter 124 is arranged in the gas guide assembly 12, thereby achieving detachable connection between the gas guide pipe 121 and the gas receiving device 3. The adapter 1242 of different interface types can be replaced according to actual needs, so as to adapt to different types of gas receiving devices 3, thereby significantly improving the versatility and facilitating on-site maintenance and rapid deployment. In addition, the adapter 1242 instead of the entire gas collecting device needs to be replaced to adapt to different devices, thereby effectively reducing the use cost.

[0128] In some embodiments, referring to FIG. 1, Figure 1 It can be understood that the diameter of the gas guide pipe 121 is different from that of the adapter pipe 12422.

[0129] The diameter of the gas guide pipe 121 is different from that of the adapter pipe 12422. The diameter of the gas guide pipe 121 can be greater than or less than that of the adapter pipe 12422. When the diameter of the gas guide pipe 121 is greater than that of the adapter pipe 12422, that is, the gas guide pipe 121 is thicker and the adapter pipe 12422 is thinner, the gas flow rate can be increased and the flow rate can be reduced. Conversely, when the diameter of the gas guide pipe 121 is less than that of the adapter pipe 12422, that is, the gas guide pipe 121 is thinner and the adapter pipe 12422 is thicker, the gas flow rate can be reduced and the flow rate can be increased. It can be understood that the diameter of the adapter pipe 12422 can be configured according to the gas inlet requirement of the connected gas receiving device 3.

[0130] Therefore, by setting the pipe diameter of the gas guide pipe 121 to be different from the pipe diameter of the adapter pipe 12422, a variable-diameter gas passage is formed, which can adjust the flow rate and flow volume of the gas during transmission, thereby meeting the gas inlet demand of the gas receiving device 3. Moreover, without changing the gas guide pipe 121, the flow rate and flow volume can be flexibly adjusted by replacing the adapter pipe 12422 with a pipe of a different diameter, which significantly enhances the adaptability and regulation capability of the gas collection device and is convenient to use.

[0131] As an example, in the energy storage device, the battery device 4 is usually in thermal runaway at a gas temperature of thousands of degrees Celsius, and the temperature is relatively high. Therefore, if a conventional electrically controlled flow valve is used, there is a risk of failure. Therefore, the application uses a replaceable adapter 1242 to achieve mechanical flow regulation, thereby ensuring the accuracy and reliability of the collection.

[0132] In some embodiments, referring to Figure 1 As shown, a second sealing member 125 is arranged between the third flange 1241 and the fourth flange 12421.

[0133] In some examples, the second sealing member 125 can be a sealing ring (such as an O-ring, a rectangular ring, etc.), a sealing gasket, a sealing glue, or the like. As an example, as shown in Figure 1 The second sealing member 125 is a sealing ring, and the sealing ring is provided with a sixth connecting hole 1251 corresponding to the third connecting hole 12411 and the fourth connecting hole 12423. The third connecting hole 12411, the sixth connecting hole 1251, and the fourth connecting hole 12423 can be fastened by bolts or the like, so as to seal and connect the third flange 1241, the second sealing member 125, and the fourth flange 12421.

[0134] In some examples, the end surface of the third flange 1241 and / or the fourth flange 12421 is provided with a sealing groove for accommodating the second sealing member 125, so as to realize positioning and installation of the second sealing member 125.

[0135] By arranging the second sealing member 125 between the third flange 1241 and the fourth flange 12421, the application effectively seals the interface gap at the connection between the gas guide pipe 121 and the adapter pipe 12422, improves the air tightness of the connection, prevents leakage of the gas at the transmission end, ensures the integrity and authenticity of the gas, and improves the accuracy and reliability of subsequent component analysis.

[0136] In some embodiments, the inner wall and / or outer wall of each component of the gas collection device can be coated with an anti-corrosion coating. Since the environment in the cavity is relatively complex, there may be corrosion factors such as humidity, acidic and alkaline gases. Therefore, by using an anti-corrosion coating, the durability and reliability of the entire device in harsh environments can be enhanced, and the overall service life of the equipment can be prolonged.

[0137] In some embodiments, referring to Figure 4 As shown in the above-mentioned embodiments, the energy storage device further comprises a cabin body, a plurality of battery devices 4, and the gas collection device 1 of the above-mentioned embodiments. The cabin body comprises a cavity 2, and the battery devices 4 are arranged in the cabin body. The gas collection device 1 is used to collect the gases generated by the thermal runaway of the battery devices 4 at different spatial positions in the cabin body.

[0138] The cabin body can simulate the real environment of an energy storage cabinet or an energy storage container, limit the free diffusion of the gases, and facilitate centralized monitoring. Shelves 21 can be arranged in the cabin body, and the plurality of battery devices 4 can be arranged in layers along the height direction on the shelves 21. The battery devices 4 serve as the thermal runaway sources.

[0139] In some embodiments, the energy storage device comprises one or more battery clusters to improve the voltage and capacity of the energy storage device. The battery cluster can comprise a plurality of battery devices 4 connected in series through a busbar component to improve the voltage of the energy storage device. When the energy storage device comprises a plurality of battery clusters, the plurality of battery clusters are connected in parallel to improve the capacity of the energy storage device.

[0140] The gas collection device of the present application is further described below by taking the thermal runaway simulation test of the energy storage device as an example.

[0141] When the energy storage device is subjected to the thermal runaway simulation test in a closed cavity, mounting holes can be formed in the cabin body at positions close to the battery devices 4 that undergo thermal runaway (such as the top wall, the side wall, etc.), the main body part 1112 of the fixing seat 111 of the gas collection device 1 is inserted into the mounting hole, the first flange of the fixing seat 111 is welded to the outside of the cabin body, the filter 112 is inserted into the guide channel 1111 of the main body part 1112, and the air inlet end 1121 of the filter 112 is manually adjusted to a suitable length protruding into the cabin body through the threaded structure. The diversion head 122 is arranged on the air outlet end 1122 of the filter 112, a sealing ring is added at the connection between the first flange of the fixing seat 111 and the second flange 1222 of the diversion head 122, and the sealing connection is achieved by locking with bolts. The third flange 1241 at the end of the gas guide pipe 121 is sealed and connected to the fourth flange 12421 of the adapter 1242 through a sealing ring and a bolt, and the adapter pipe 12422 of the adapter 1242 is connected to the external gas receiving device 3 through the conveying pipeline 31. Under the action of the pressure difference, the thermal runaway gases in the closed cabin body will flow into the gas receiving device 3 along the gas collection device pipeline in real time. If the sampling position needs to be changed later, the first flange and the second flange 1222 can be detached, the connection can be disconnected, the diversion head 122 can be removed, the position of the filter 112 can be adjusted again, and the diversion head 122 can be reinstalled. As an example, the gas collection device 1 can be arranged on the top wall of the cabin body, and the air outlet end 1122 of the filter 112 can be arranged at a position close to the battery devices 4 that undergo thermal runaway. The air outlet end 1122 of the filter 112 can be arranged at a position close to the battery devices 4 that undergo thermal runaway. Figure 4As shown, the gas receiving device 3 is a gas analyzer. In the battery thermal runaway simulation test, by adjusting the position of the filter 112, the gas near the thermal runaway battery device 4 area and the gas gradually diffusing to different areas upward can be collected respectively, multi-point dynamic sampling monitoring can be realized, and then the distribution rule and diffusion dynamics of the battery combustible gas in the thermal runaway process can be analyzed by the gas analyzer.

[0142] Therefore, the embodiments of the present application can accurately collect the gas concentration and composition at different spatial positions in the thermal runaway process of the battery device under the closed environment of the energy storage device cabin by the gas collecting device, which is helpful to analyze the distribution rule and diffusion dynamics of the combustible gas in the thermal runaway process, thereby improving the accuracy and reliability of the thermal runaway simulation test.

[0143] The above is only a preferred embodiment of the present application and is not intended to limit the embodiments of the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A gas collecting device for collecting gas in a cavity, characterized by, The gas collecting device comprises: An air inlet assembly comprising a fixing base and a filter, the fixing base is used for being connected to the cavity, the fixing base has a guide channel penetrating through in the axial direction; the filter is arranged in the guide channel in the axial direction, the filter has an air inlet end and an air outlet end, the air inlet end extends from one end of the fixing base, the air outlet end is located at the other end of the fixing base, and the filter can be adjusted in position in the axial direction relative to the fixing base, so that the air inlet end extends into different space positions in the cavity; A gas guide assembly connected to the air outlet end and configured to guide the gas filtered by the filter.

2. The gas collecting device according to claim 1, characterized in that, The filter is arranged in the guide channel in the axial direction and can move in the axial direction.

3. The gas collection device of claim 2, wherein, An outer thread is arranged on the outer peripheral wall of the filter, the outer thread is located in the region between the air inlet end and the air outlet end, and an inner thread is arranged on the inner wall of the guide channel and threadedly cooperates with the outer thread.

4. The gas collection device of claim 3, wherein, The axial length of the outer thread is greater than the axial length of the inner thread.

5. The gas collection device of claim 3, wherein A limiting portion is arranged on the outer peripheral wall of the filter, the limiting portion is located between the outer thread and the air outlet end, and when the air inlet end of the filter extends to the deepest position in the cavity, the limiting portion abuts against the end of the fixing base.

6. The gas collection device of claim 1, wherein, The fixing base comprises a main body and a mounting portion, the main body is used for being arranged in the cavity, the main body has the guide channel, the mounting portion is arranged on the outer wall of the main body and is used for being mounted outside the cavity; the air inlet end and the air outlet end are respectively located at the two ends of the main body in the axial direction.

7. The gas collecting device according to any one of claims 1 to 5, characterized by The gas guide assembly comprises a gas guide pipe, one end of the gas guide pipe is connected to the air outlet end, and the other end is used for being connected to a gas receiving device.

8. The gas collection device of claim 7, wherein, The gas guide assembly comprises a diversion head, the diversion head has a flow channel, an air inlet and an air outlet which are communicated with the flow channel, the openings of the air inlet and the air outlet are oriented in different directions, the air inlet is connected to the air outlet end, and the air outlet is connected to one end of the gas guide pipe.

9. The gas collection device of claim 8, wherein, The fixing base comprises a main body and a mounting portion, the main body is used for being arranged in the cavity, the main body has the guide channel, the air inlet end and the air outlet end are respectively located at the two ends of the main body in the axial direction; the mounting portion is a first flange, which is arranged on the outer wall of one end of the main body adjacent to the air outlet end and is used for being mounted outside the cavity; The diversion head comprises an end cover and a second flange, the flow channel extending in the axial direction is arranged in the end cover, one end of the end cover in the axial direction is provided with the air inlet, the side wall of the end cover is provided with the air outlet, the air outlet end penetrates through the air inlet and extends into the flow channel, and the second flange is arranged on the side wall of one end of the end cover adjacent to the air inlet and is detachably connected with the first flange.

10. The gas collection device of claim 9, wherein, The diversion head can rotate in the axial direction relative to the fixing base.

11. The gas collection device of claim 9, wherein, A first sealing member is arranged between the first flange and the second flange.

12. The gas collection device of claim 11, wherein, The axial length of the end cover is greater than the maximum axial length of the air outlet end of the filter extending out of one end surface of the main body.

13. The gas collection device of claim 7, wherein, The gas guiding assembly comprises a joint part, the joint part comprises a third flange and an adapter joint, the third flange is arranged on the outer wall of the other end of the gas guiding pipe, the adapter joint comprises a fourth flange and an adapter pipe, the fourth flange is arranged on the outer wall of one end of the adapter pipe and detachably connected with the third flange, one end of the adapter pipe is communicated with the other end of the gas guiding pipe, and the other end of the adapter pipe is used for connecting a gas receiving device.

14. The gas collection device of claim 13, wherein, The pipe diameter of the gas guiding pipe is different from the pipe diameter of the adapter pipe.

15. The gas collection device of claim 13, wherein, A second sealing member is arranged between the third flange and the fourth flange.

16. An energy storage device, comprising: Comprise: a cabin body, a plurality of battery devices and the gas collecting device of any one of claims 1 to 15, the cabin body comprises the cavity, the battery devices are arranged in the cabin body, and the gas collecting device is used for collecting gases generated by thermal runaway of the battery devices at different spatial positions in the cabin body.

Images