An energy storage device

Abstract

This application relates to the field of energy storage equipment, and in particular to an energy storage device comprising an energy storage cabinet; a battery pack disposed within the energy storage cabinet, with an explosion-proof valve mounted on the battery pack; and a smoke exhaust assembly comprising a smoke exhaust component and a connector. The smoke exhaust component is connected to the energy storage cabinet, and the connector has a first flange. The connector is inserted into the smoke exhaust component, with the first flange abutting and connecting to the smoke exhaust component. The connector has a first smoke exhaust channel, which abuts against the battery pack, and the explosion-proof valve is located within the first smoke exhaust channel. The smoke exhaust component also has a second smoke exhaust channel communicating with the first smoke exhaust channel, which is used to communicate with the outside environment. The connection between the smoke exhaust component and the energy storage cabinet, the connection between the connector and the smoke exhaust component, and the abutment between the connector and the battery pack allow the impact force generated by the high-pressure smoke emitted from the explosion-proof valve to be dispersed onto the energy storage cabinet through the smoke exhaust component, thereby reducing the impact force on the smoke exhaust component when emitting high-pressure smoke and thus reducing the deformation of the smoke exhaust component.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment, and more particularly to an energy storage device. Background Technology

[0002] Energy storage liquid coolers are used in industrial and commercial parks, office buildings, and large-scale energy storage power stations. Battery packs within these coolers may experience thermal runaway due to charge-discharge cycles or abnormal operating conditions (such as overcharging or short circuits). The resulting fumes from thermal runaway need to be promptly vented to the outside. By incorporating exhaust channels within the energy storage liquid cooler, harmful fumes can be rapidly expelled when thermal runaway occurs, preventing them from spreading to other areas within the cooler.

[0003] Existing energy storage liquid cooler cabinets have exhaust ports installed in their exhaust channels, and the explosion-proof valves on the battery packs are inserted into the exhaust channels through the exhaust ports.

[0004] However, the impact of high-pressure flue gas ejected from the explosion-proof valve can easily cause deformation of the exhaust channel. Utility Model Content

[0005] This application provides an energy storage device to solve the problem of easy deformation of the exhaust channel under the impact of high-pressure flue gas.

[0006] This application provides an energy storage device, including:

[0007] Energy storage cabinet;

[0008] The battery pack is housed inside the energy storage cabinet and is equipped with an explosion-proof valve.

[0009] The smoke exhaust assembly includes a smoke exhaust component and a connector. The smoke exhaust assembly is connected to the energy storage cabinet. The connector has a first flange and is inserted into the smoke exhaust component. The first flange abuts against and connects with the smoke exhaust component. The connector has a first smoke exhaust channel. The connector abuts against the battery pack and the explosion-proof valve is located in the first smoke exhaust channel. The smoke exhaust component has a second smoke exhaust channel that communicates with the first smoke exhaust channel. The second smoke exhaust channel is used to communicate with the outside.

[0010] In one possible embodiment, a first mounting port is provided on the smoke exhaust component, and the connector is inserted into the smoke exhaust component through the first mounting port;

[0011] The first flange is set around the periphery of the connector, and the first flange is located inside the second smoke exhaust channel.

[0012] In one possible embodiment, the first flange is welded to the smoke exhaust component;

[0013] And / or, the first flange is integrally bent or stamped with the connector;

[0014] And / or, the first flange is welded to the connector.

[0015] In one possible embodiment, a seal is also included, which is disposed on the battery pack or connector, and the explosion-proof valve is located in the area enclosed by the seal. The seal is used to seal the gap between the battery pack and the connector.

[0016] In one possible embodiment, a mounting groove is provided on the battery pack, a seal is disposed in the mounting groove, and a connector is inserted into the mounting groove;

[0017] Alternatively, a base plate can be provided on the connector, with mounting holes on the base plate for the explosion-proof valve to enter the first smoke exhaust channel. A mounting groove can be provided on the base plate, and the sealing element can be placed in the mounting groove. The base plate abuts against the battery pack.

[0018] In one possible embodiment, the smoke exhaust component includes a first support portion, a mounting portion, and a second support portion connected in sequence. The first support portion and the second support portion are located on the same side of the mounting portion. A connector is inserted into the mounting portion. The first support portion and the second support portion abut against the side of the energy storage cabinet. The first support portion, the mounting portion, the second support portion, and part of the side of the energy storage cabinet together form a second smoke exhaust channel.

[0019] In one possible embodiment, a second flange is provided on both the first support and the second support. The side of the energy storage cabinet has a first mounting plate and a second mounting plate covering the first mounting plate. A second mounting port is provided on the first mounting plate. The smoke exhaust component is inserted into the first mounting plate through the second mounting port. The second flange abuts against and connects with the side of the first mounting plate facing the second mounting port.

[0020] And / or, the first support and the second support extend from the top of the energy storage cabinet to the bottom of the energy storage cabinet.

[0021] In one possible embodiment, the first support and / or the second support has a through hole communicating with the second smoke exhaust channel, and the through hole is connected to the interior of the energy storage cabinet.

[0022] In one possible embodiment, an exhaust fan is installed inside the energy storage cabinet, and the exhaust fan corresponds to the through hole. The exhaust fan is used to draw the smoke inside the energy storage cabinet and at the through hole to the outside.

[0023] In one possible embodiment, the energy storage device provided above is included, and there are multiple battery packs. The multiple battery packs are arranged at intervals along the height direction of the energy storage cabinet, and the explosion-proof valves of the multiple battery packs are all facing the same direction.

[0024] There are multiple connectors, and each connector is set up in a one-to-one correspondence with an explosion-proof valve.

[0025] This application provides an energy storage device comprising an energy storage cabinet, a battery pack, and a smoke exhaust assembly. The battery pack and smoke exhaust assembly are housed within the energy storage cabinet. The battery pack is equipped with an explosion-proof valve. The smoke exhaust assembly includes a smoke exhaust component and a connector. The connector has a first flange and a first smoke exhaust channel within it. The smoke exhaust component has a second smoke exhaust channel communicating with the first smoke exhaust channel, and the smoke exhaust component is connected to the energy storage cabinet. The connector is inserted into the smoke exhaust component, abutting and connecting with it via the first flange. Simultaneously, the connector abuts against the battery pack, positioning the explosion-proof valve within the first smoke exhaust channel. The second smoke exhaust channel within the smoke exhaust component communicates with the first smoke exhaust channel and is used for external communication. In the event of abnormal pressure loss in the battery pack, smoke can be ejected through the explosion-proof valve and discharged into the first smoke exhaust channel within the connector, then guided through the first smoke exhaust channel to the second smoke exhaust channel of the smoke exhaust component, and finally discharged to the outside via the second smoke exhaust channel.

[0026] By connecting the exhaust component to the energy storage cabinet, and the connecting component to the exhaust component, and abutting against the battery pack, the impact force generated by the high-pressure flue gas ejected from the explosion-proof valve can be dispersed onto the energy storage cabinet through the exhaust component. This reduces the impact force on the exhaust component when emitting high-pressure flue gas, thereby reducing the deformation of the exhaust component and solving the problem of easy deformation of the exhaust component under the impact of high-pressure flue gas. At the same time, the setting of the first flange enhances the connection strength between the exhaust component and the connecting component, thereby reducing the risk of flue gas leakage and improving the reliability of the exhaust structure under vibration and impact conditions. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] Figure 1 A schematic diagram of the energy storage device provided in this application.

[0029] Figure 2 for Figure 1 A schematic diagram of the structure of the first mounting plate.

[0030] Figure 3 for Figure 1 Assembly diagram of the central exhaust assembly and the first mounting plate.

[0031] Figure 4 for Figure 3 A schematic diagram of the structure excluding the first mounting plate.

[0032] Figure 5 for Figure 4 A schematic diagram of the structure at point A in the middle.

[0033] Figure 6 for Figure 4 A schematic diagram of the structure of the central exhaust system and connecting parts.

[0034] Figure 7 for Figure 4 A schematic diagram of the structure from another direction where the central exhaust assembly connects to the battery pack.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100 - Energy storage cabinet; 110 - First mounting plate; 111 - Second mounting port; 120 - Second mounting plate; 200 - Battery pack; 210 - Explosion-proof valve; 220 - Mounting groove; 300 - Smoke exhaust assembly; 310 - Smoke exhaust component; 311 - Second smoke exhaust channel; 312 - First mounting port; 313 - First support part; 314 - Mounting part; 315 - Second support part; 316 - Second flange; 317 - Through hole; 320 - Connector; 321 - First flange; 322 - First smoke exhaust channel; 323 - Base plate; 3231 - Mounting hole; 400 - Sealing element; 500 - Smoke exhaust fan; 510 - Explosion relief plate.

[0037] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application according to the specific circumstances.

[0040] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0041] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0042] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0043] Unless otherwise stated, the term "multiple" means two or more.

[0044] Energy storage technology is widely used in scenarios such as grid peak shaving, renewable energy grid connection, and backup power supply. Energy storage liquid-cooled cabinets or cabinets integrate multiple battery packs and are equipped with exhaust structures for thermal management and safety protection. When a battery pack experiences abnormal heating or even thermal runaway, the high-temperature fumes released by the explosion-proof valves on the battery packs need to be promptly exhausted outside the cabinet to reduce the safety risks caused by pressure buildup and fumes diffusion inside the cabinet.

[0045] Existing energy storage liquid cooler cabinets have exhaust ports on their exhaust channels. The exhaust ports are connected to the explosion-proof valve on the battery pack via exhaust pipes. When the battery pack experiences thermal runaway, the explosion-proof valve opens due to the increased internal pressure of the battery pack. The flue gas generated by the battery pack is ejected from the explosion-proof valve, discharged through the exhaust pipe to the exhaust port, and then discharged into the exhaust channel, from where it is discharged to the outside.

[0046] However, under long-term vibration, high temperature changes, and instantaneous smoke exhaust impact, the connection between the smoke exhaust port and the smoke exhaust pipe is prone to deformation, loosening, or gaps, causing high-temperature smoke to leak into the cabinet before entering the smoke exhaust channel. This is not conducive to suppressing heat spread and results in problems with sealing and structural strength.

[0047] This application provides an energy storage device comprising an energy storage cabinet, a battery pack, and a smoke exhaust assembly. The battery pack and smoke exhaust assembly are housed within the energy storage cabinet. The battery pack is equipped with an explosion-proof valve. The smoke exhaust assembly includes a smoke exhaust component and a connector. The connector has a first flange and a first smoke exhaust channel within it. The smoke exhaust component has a second smoke exhaust channel communicating with the first smoke exhaust channel, and the smoke exhaust component is connected to the energy storage cabinet. The connector is inserted into the smoke exhaust component, abutting and connecting with it via the first flange. Simultaneously, the connector abuts against the battery pack, positioning the explosion-proof valve within the first smoke exhaust channel. The second smoke exhaust channel within the smoke exhaust component communicates with the first smoke exhaust channel and is used for external communication. In the event of abnormal pressure loss in the battery pack, smoke can be ejected through the explosion-proof valve and discharged into the first smoke exhaust channel within the connector, then guided through the first smoke exhaust channel to the second smoke exhaust channel of the smoke exhaust component, and finally discharged to the outside via the second smoke exhaust channel.

[0048] By connecting the exhaust component to the energy storage cabinet, and the connecting component to the exhaust component, and abutting against the battery pack, the impact force generated by the high-pressure flue gas ejected from the explosion-proof valve can be dispersed onto the energy storage cabinet through the exhaust component. This reduces the impact force on the exhaust component when emitting high-pressure flue gas, thereby reducing the deformation of the exhaust component and solving the problem of easy deformation of the exhaust component under the impact of high-pressure flue gas. At the same time, the setting of the first flange enhances the connection strength between the exhaust component and the connecting component, thereby reducing the risk of flue gas leakage and improving the reliability of the exhaust structure under vibration and impact conditions.

[0049] Reference Figures 1 to 7 As shown, this application provides an energy storage device, including an energy storage cabinet 100; a battery pack 200 disposed inside the energy storage cabinet 100, with an explosion-proof valve 210 disposed on the battery pack 200; and a smoke exhaust assembly 300, including a smoke exhaust component 310 and a connector 320. The smoke exhaust component 310 is connected to the energy storage cabinet 100, and the connector 320 has a first flange 321. The connector 320 is inserted into the smoke exhaust component 310, and the first flange 321 abuts against and connects with the smoke exhaust component 310. The connector 320 has a first smoke exhaust channel 322, and the connector 320 abuts against the battery pack 200, with the explosion-proof valve 210 located within the first smoke exhaust channel 322. The smoke exhaust component 310 has a second smoke exhaust channel 311 communicating with the first smoke exhaust channel 322, and the second smoke exhaust channel 311 is used to communicate with the outside.

[0050] The energy storage cabinet 100 refers to a box or frame-type shell used to house the battery pack 200, the smoke exhaust assembly 300 and related auxiliary components. The energy storage cabinet 100 is used to provide the overall space boundary required for the installation support, protection and isolation of the energy storage device and the exhaust of smoke, and to form a defined channel for the internal airflow.

[0051] The battery pack 200 refers to a battery module or battery unit assembly installed inside the energy storage cabinet 100 for storing and releasing electrical energy. The battery pack 200 is used to perform charging and discharging functions under normal conditions, and releases smoke and pressure through the explosion-proof valve 210 under abnormal heating, internal pressure increase or thermal runaway conditions. The battery pack 200 is arranged in conjunction with the support structure inside the energy storage cabinet 100, and the opening position of the explosion-proof valve 210 corresponds to the first smoke exhaust channel 322 to form a smoke exhaust passage from the explosion-proof valve 210 to the connector 320.

[0052] The smoke exhaust assembly 300 is a flow guide component used to guide the smoke generated by the battery pack 200 under thermal runaway conditions from inside the cabinet to the outside. The smoke exhaust assembly 300 is used to establish a continuous smoke flow path between the battery pack 200, the explosion-proof valve 210 and the outside. The smoke exhaust assembly 300 is set in the area corresponding to the explosion-proof valve 210 of the battery pack 200 to shorten the smoke exhaust path and reduce the retention inside the cabinet. The second smoke exhaust channel 311 is connected to the outside to ensure that the smoke exhaust path is continuous and unobstructed.

[0053] The smoke exhaust component 310 refers to a channel component in the smoke exhaust assembly 300 used to form an external exhaust path. The smoke exhaust component 310 has a second smoke exhaust channel 311 inside, which is used to communicate with the outside, thereby exhausting the flue gas from the first smoke exhaust channel 322 to the outside of the energy storage cabinet 100. The smoke exhaust component 310 is installed on or inside the energy storage cabinet 100 and connected to the energy storage cabinet 100, and the smoke exhaust component 310 communicates with the outside.

[0054] The connector 320 is an intermediate transition component disposed between the smoke exhaust component 310 and the battery pack 200, used to receive the smoke discharged from the explosion-proof valve 210 and guide the smoke into the smoke exhaust component 310. The connector 320 forms a first smoke exhaust channel 322 inside. The connector 320 is inserted into the smoke exhaust component 310 and abuts and connects with the smoke exhaust component 310 through the first flange 321. At the same time, the connector 320 abuts with the battery pack 200, so that the explosion-proof valve 210 is located in the first smoke exhaust channel 322, thereby establishing a connection between the explosion-proof valve 210 and the second smoke exhaust channel 311. The first flange 321 of the connector 320 is used to provide an abutment part, so that the connector 320 and the smoke exhaust component 310 form a stable connection.

[0055] Based on the above analysis, the energy storage device provided in this application comprises an energy storage cabinet 100, a battery pack 200, and a smoke exhaust assembly 300. The battery pack 200 and the smoke exhaust assembly 300 are disposed within the energy storage cabinet 100. The battery pack 200 is equipped with an explosion-proof valve 210. The smoke exhaust assembly 300 includes a smoke exhaust component 310 and a connector 320. The connector 320 has a first flange 321 and a first smoke exhaust channel 322. The smoke exhaust component 310 has a second smoke exhaust channel 311 that communicates with the first smoke exhaust channel 322. The smoke exhaust component 310 is connected to the energy storage cabinet 100.

[0056] The connector 320 is inserted into the smoke exhaust component 310. The first flange 321 on the connector 320 abuts against and connects with the smoke exhaust component 310. At the same time, the connector 320 abuts against the battery pack 200 and the explosion-proof valve 210 is located in the first smoke exhaust channel 322. The second smoke exhaust channel 311 in the smoke exhaust component 310 is connected to the first smoke exhaust channel 322 and used to connect with the outside. In case of abnormal pressure loss in the battery pack 200, the smoke can be discharged through the explosion-proof valve 210 and then discharged into the first smoke exhaust channel 322 in the connector 320. After passing through the first smoke exhaust channel 322, it is guided to the second smoke exhaust channel 311 of the smoke exhaust component 310 and finally discharged to the outside through the second smoke exhaust channel 311.

[0057] The smoke exhaust component 310 is connected to the energy storage cabinet 100, and the connecting component 320 is connected to the smoke exhaust component 310. The connecting component 320 abuts against the battery pack 200, so that the impact force generated by the high-pressure flue gas ejected from the explosion-proof valve 210 can be dispersed to the energy storage cabinet 100 through the smoke exhaust component 310. This reduces the impact force on the smoke exhaust component 310 when emitting high-pressure flue gas, thereby reducing the deformation of the smoke exhaust component 310 and solving the problem of easy deformation of the smoke exhaust component 310 under the impact of high-pressure flue gas. At the same time, the setting of the first flange 321 enhances the connection strength between the smoke exhaust component 310 and the connecting component 320, thereby reducing the risk of flue gas leakage and improving the reliability of the smoke exhaust structure under vibration and impact conditions.

[0058] Reference Figure 6 As shown, based on the aforementioned embodiment, the first smoke exhaust channel 322 further includes a first mounting port 312 on the smoke exhaust component 310, and the connector 320 is inserted into the smoke exhaust component 310 through the first mounting port 312; the first flange 321 is arranged around the periphery of the connector 320, and the first flange 321 is located inside the second smoke exhaust channel 311.

[0059] The smoke exhaust component 310 can be a sheet metal channel component, a box-type channel component, or a shell-type flow guide component. The first mounting port 312 of the smoke exhaust component 310 can be opened on the side wall, top wall, or docking wall corresponding to the battery pack 200 of the smoke exhaust component 310. The connector 320 is inserted into the smoke exhaust component 310 along the axial or near-axial direction of the first mounting port 312, and the first flange 321 located on the outer periphery of the connector 320 enters the second smoke exhaust channel 311.

[0060] The first flange 321 and the smoke exhaust component 310 can be connected by welding, riveting, edge pressing or sealing gasket clamping. After the first flange 321 enters the second smoke exhaust channel 311, it can provide axial positioning for the connector 320 to prevent the connector 320 from shifting due to vibration, thermal expansion and contraction or smoke impact. On the other hand, it can form a flow guidance constraint on the high-temperature smoke released by the explosion-proof valve 210 in the circumferential direction, so that the smoke is transported to the outside along a predetermined path after entering the second smoke exhaust channel 311, thereby reducing the risk of turbulence, rollback and leakage of smoke at the connection interface between the connector 320 and the smoke exhaust component 310.

[0061] The first mounting port 312 can be a round hole, a rectangular hole, or an irregular punch hole, or it can be a matching stepped hole, a folded hole, or a mounting hole with a sealing groove, depending on the shape of the connector 320; the first flange 321 can be a continuous annular flange, a rectangular perimeter flange, or a local arc-shaped flange continuously arranged along the periphery of the connector 320.

[0062] The size of the first mounting port 312 can be slightly larger than the outer dimension of the part of the connector 320 inserted into the first mounting port 312, so as to form an assembly gap and cooperate with the first flange 321 to achieve clamping; the circumferential width of the first flange 321 can be smaller than the effective flow width of the second smoke exhaust channel 311, so as to avoid excessive obstruction of the smoke exhaust section, while ensuring sufficient contact area and bearing area.

[0063] Based on the above structural relationship, it can be seen that after the connector 320 is inserted through the first mounting port 312, the first flange 321 is located in the second smoke exhaust channel 311 and cooperates with the inner side of the smoke exhaust component 310, so that the connection interface between the connector 320 and the smoke exhaust component 310 changes from a simple through-hole butt joint to a structural form with circumferential limiting and internal support, thereby improving the connection vibration resistance and long-term retention.

[0064] During assembly, the connector 320 is inserted into the smoke exhaust component 310 through the first mounting port 312, and the first flange 321 on the periphery of the connector 320 is simultaneously inserted into the second smoke exhaust channel 311. The first flange 321 is stably connected to the smoke exhaust component 310 by welding, pressing or other fixing methods. The other end of the connector 320 is correspondingly abutted against the explosion-proof valve 210 of the battery pack 200, thereby establishing a smoke exhaust path from the battery pack 200 to the second smoke exhaust channel 311 and then to the outside.

[0065] When the battery pack 200 experiences abnormal temperature rise or thermal runaway, the explosion-proof valve 210 opens due to the increased internal pressure of the battery pack 200. The released high-temperature flue gas first enters the connector 320 and is guided to the first mounting port 312 through the first exhaust channel 322. The first mounting port 312 is covered by the first flange 321, and the flue gas is introduced into the second exhaust channel 311 of the exhaust component 310. The flue gas is then discharged to the outside through the second exhaust channel 311.

[0066] The first flange 321 is located within the second smoke exhaust channel 311 and provides circumferential guidance for the flow of flue gas, ensuring that the flue gas stably enters the second smoke exhaust channel 311 and is discharged to the outside. Simultaneously, the circumferential contact surface formed between the first flange 321 and the smoke exhaust component 310 can suppress interface shaking and gap leakage caused by pressure pulses. Therefore, the smoke exhaust assembly 300 can maintain connection strength under vibration, high temperature, and instantaneous smoke exhaust impact, thereby improving the reliability of flue gas discharge and reducing the possibility of flue gas leakage into the energy storage cabinet 100, thus balancing the sealing and structural stability of the energy storage cabinet 100. It should be understood that the above examples are merely illustrative and not limiting. Any equivalent substitutions or modifications made to the first mounting port 312, the first flange 321, and their mating relationships without departing from the technical concept of this application should fall within the protection scope of this application.

[0067] Reference Figures 4 to 7 As shown, in one possible implementation, the first flange 321 is welded to the smoke exhaust component 310; and / or, the first flange 321 is integrally bent or stamped with the connector 320; and / or, the first flange 321 is welded to the connector 320.

[0068] In one possible embodiment, when the first flange 321 is welded to the smoke exhaust component 310, the welding position can be located at the outer edge, inner edge, or end face of the first flange 321 that is in contact with the smoke exhaust component 310. The welding method can be spot welding, continuous welding, circumferential welding, or intermittent welding to adapt to structural forms with different thicknesses, different materials, and different load-bearing requirements.

[0069] For example, the welding material can be selected from stainless steel welding wire, carbon steel welding wire, or aluminum welding wire depending on the material of the connector 320 or the fume extractor 310. If necessary, a brazing filler metal compatible with the fume extractor 310 can also be used to ensure the strength, heat resistance, and corrosion resistance of the welded area. After the first flange 321 is welded to the fume extractor 310, the weld forms a closed-loop stress in the circumferential direction, which can limit the axial displacement and radial sway of the connector 320 after it is inserted into the fume extractor 310, thereby preventing loosening and leakage under the impact of the fume.

[0070] In one possible embodiment, when the first flange 321 is integrally bent or stamped with the connector 320, the first flange 321 can be a 90-degree right-angle flange, an obtuse-angle flange, or a flange with rounded corner transition. The specific angle and curvature of the first flange 321 can be set according to the assembly gap and sealing requirements between the connector 320 and the smoke exhaust component 310.

[0071] The connector 320 can be formed by processing metal sheet, thin-walled tube or profile. The integral forming of the first flange 321 and the connector 320 eliminates the splicing interface between the first flange 321 and the connector 320, which can reduce the risk of leakage caused by weld defects or assembly deviations. At the same time, it improves the circumferential stiffness of the first flange 321, making it less prone to warping or deformation when the first flange 321 is subjected to flue gas pressure in the second flue gas channel 311.

[0072] In one possible embodiment, when the first flange 321 is welded to the connector 320, the first flange 321 can be made into a ring, semi-ring or segmented flange structure, and then fixedly connected to the outer periphery of the end of the connector 320 by welding. The welding position can be located at the overlapping edge of the first flange 321 and the connector 320, the contact edge between the bottom surface of the first flange 321 and the side wall of the connector 320, or the mating edge between the end of the first flange 321 and the port of the connector 320.

[0073] To improve welding reliability, the contact surfaces of the first flange 321 and the connector 320 can be pre-ground, degreased, and deoxidized to improve weld formation quality. If necessary, additional welding, grinding, and sealing inspection can be performed after welding. The welded structure of the first flange 321 and the connector 320 helps establish stable circumferential support between the connector 320 and the exhaust fan 310, preventing loosening of the flange due to high-temperature cycling and long-term vibration. This ensures that the flue gas released by the explosion-proof valve 210 can smoothly enter the second exhaust fan 311 through the first exhaust fan 322 and be discharged to the outside.

[0074] The first flange 321 can be a continuous annular structure or a partially segmented structure; the cross-section of the first flange 321 can be rectangular, L-shaped, U-shaped, or a folded structure with reinforcing ribs. For example, the thickness of the first flange 321 can be 0.8 to 1.5 times the thickness of the base material of the connector 320, and the width of the first flange 321 can be determined from 5 mm to 30 mm based on the effective smoke guiding portion of the smoke exhaust component 310 and the welding space. The circumferential welding length should preferably cover the main stress area to form a continuous stress ring, thereby balancing structural strength and sealing reliability. It should be understood that the above examples are merely illustrative and not limiting.

[0075] The battery pack 200 is installed inside the energy storage cabinet 100 with the explosion-proof valve 210 facing the smoke exhaust assembly 300. The connector 320 is inserted into the smoke exhaust assembly 310 and forms a reliable connection with the smoke exhaust assembly 310 through the first flange 321. If welding is used, the weld will firmly combine the first flange 321 with the smoke exhaust assembly 310 or the connector 320. If integral molding is used, the first flange 321 and the body of the connector 320 together form a rigid reinforcement structure.

[0076] Under normal operating conditions, the first smoke exhaust channel 322 and the second smoke exhaust channel 311 remain connected but do not affect the normal operation of the battery pack 200. When the battery pack 200 triggers the explosion-proof valve 210 to release pressure due to abnormal heating, the high-temperature flue gas first enters the first smoke exhaust channel 322 and is guided into the second smoke exhaust channel 311 in the smoke exhaust component 310 along a predetermined path under the abutment constraint of the connector 320 and the battery pack 200, and then discharged to the outside through the second smoke exhaust channel 311.

[0077] Because the first flange 321 improves the circumferential stiffness and connection strength of the connection between the connector 320 and the exhaust component 310 through welding or integral forming, it can maintain the stability of the connection under the combined effects of instantaneous flue gas impact, energy storage cabinet 100 vibration and thermal expansion and contraction, reduce the generation of gaps and local warping, thereby reducing the possibility of flue gas leakage into the energy storage cabinet 100, and improving the continuity and sealing of the exhaust path, thereby improving the structural reliability and operational safety of the energy storage device under abnormal operating conditions.

[0078] Reference Figure 6 As shown, based on the aforementioned embodiments, it further includes a sealing element 400, which is disposed on the battery pack 200 or the connector 320. The explosion-proof valve 210 is located in the area enclosed by the sealing element 400, and the sealing element 400 is used to seal the gap between the battery pack 200 and the connector 320.

[0079] The sealing element 400 can be disposed on the side wall of the battery pack 200, the end face of the connector 320, or the contact edge of both, and together with the connector 320 and the battery pack 200, form a closed area corresponding to the explosion-proof valve 210. The explosion-proof valve 210 is located inside the closed area. The sealing element 400 can be arranged around the explosion-proof valve 210 to cover the leakage path of the flue gas and adapt to the structural contour around the explosion-proof valve 210.

[0080] The sealing element 400 can be implemented in the form of annular sealing ring, strip sealing gasket, irregularly shaped covered gasket or foam sealing strip, etc. The sealing element 400 can be made of high temperature resistant silicone, fluororubber, graphite composite material, ceramic fiber gasket or metal covered elastic gasket to maintain compression resilience and heat resistance stability under high temperature flue gas impact, cabinet temperature fluctuation and long-term vibration conditions.

[0081] The cross-sectional height of the seal 400 can be slightly larger than the height of the gap to be sealed between the battery pack 200 and the connector 320, so that the seal 400 is pre-compressed after assembly to form a continuous seal. For example, the compression ratio of the seal 400 can be set to an appropriate range according to the material elasticity and assembly tolerance to ensure that it can provide stable contact pressure without affecting the normal pressure relief of the explosion-proof valve 210 due to excessive compression. The circumferential dimension of the seal 400 should at least cover the leakage channel around the explosion-proof valve 210, and can be adapted and adjusted according to the size of the explosion-proof valve 210, the flatness of the end face of the connector 320, and the assembly error.

[0082] The seal 400 can be fixed to the battery pack 200 or the connector 320 by adhesive bonding, slot fixing, frame fixing or embedded fixing.

[0083] Based on the above analysis, it can be seen that the seal 400 can suppress the escape of flue gas around the explosion-proof valve 210 from the connection gap between the connector 320 and the battery pack 200, thereby reducing the probability of flue gas spreading inside the energy storage cabinet 100 due to thermal runaway, and thus improving the reliability and safety of the energy storage device's smoke exhaust under abnormal operating conditions. It should be understood that the above example is only for demonstration and not a limitation. The specific structure, material, and installation method of the seal 400 can be adjusted according to the actual structure of the energy storage cabinet 100, the size of the smoke exhaust component 310, and the arrangement of the battery pack 200.

[0084] Reference Figure 7As shown, in one possible implementation, the battery pack 200 is provided with a mounting groove 220, the seal 400 is disposed in the mounting groove 220, and the connector 320 is inserted into the mounting groove 220; or, the connector 320 is provided with a base plate 323, the base plate 323 is provided with a mounting hole 3231, the mounting hole 3231 is used for the explosion-proof valve 210 to enter the first smoke exhaust channel 322, the base plate 323 is provided with a mounting groove 220, the seal 400 is disposed in the mounting groove 222, and the base plate 323 abuts against the battery pack 200.

[0085] The mounting groove 220 can be set on the side of the battery pack 200 facing the smoke exhaust assembly 300. The seal 400 is arranged at the bottom, bottom edge or periphery of the mounting groove 220. The connector 320 is inserted into the groove along the axial direction or insertion direction of the mounting groove 220 and cooperates with the seal 400, the groove wall and the outer shell of the battery pack 200, thereby maintaining a corresponding communication relationship between the first smoke exhaust channel 322 inside the connector 320 and the explosion-proof valve 210 on the battery pack 200.

[0086] The mounting groove 220 can be a rectangular groove, an annular groove, a stepped groove, or a stepped recess to accommodate different connection interface shapes. The depth of the mounting groove 220 should meet the requirements of fully accommodating the seal 400 and allowing the connector 320 to be at least partially embedded. The width of the mounting groove 220 can form a small clearance fit or a slight interference fit with the outer width or outer diameter of the seal 400. The insertion depth of the connector 320 should ensure that the first smoke exhaust channel 322 is stably aligned with the explosion-proof valve 210, while allowing the seal 400 to form sufficient preload after compression to compensate for manufacturing tolerances and assembly deviations.

[0087] In one possible embodiment, after the battery pack 200 is processed to form the mounting groove 220, the seal 400 is first placed or embedded in the mounting groove 220, and then the connector 320 is pressed or slid into the mounting groove 220 along the insertion direction of the mounting groove 220, so that the outer periphery of the connector 320 and the seal 400 make tight contact, and the seal 400 undergoes elastic deformation in the mounting groove 220, thereby forming a continuous sealing interface between the connector 320 and the battery pack 200.

[0088] When the battery pack 200 heats up abnormally and releases smoke through the explosion-proof valve 210, the smoke enters the first smoke exhaust channel 322 inside the connector 320, and is prevented from leaking to the outside of the battery pack 200 and the inside of the energy storage cabinet 100 by the barrier effect of the seal 400 inside the mounting groove 220.

[0089] Because the mounting groove 220 provides embedded restraint for the seal 400 and the connector 320, the connector 320 is less prone to shaking, tilting, or shifting, and the seal 400 is less likely to dislodge or be squeezed out. This ensures stable sealing pressure and connection strength under thermal shock, vibration, and long-term service conditions, thereby improving the integrity of the exhaust path, reducing the risk of high-temperature flue gas leakage, and minimizing the space occupied by the protruding connection structure between the connector 320 and the battery pack 200. Based on the above analysis, the mounting groove 220 can improve connection stability and exhaust sealing reliability within the limited space of the energy storage cabinet 100, thus enhancing the safety and adaptability of the energy storage device under abnormal operating conditions.

[0090] In one possible embodiment, the mounting slot 220 may also be provided on the connector 320, such as... Figure 6 As shown. A base plate 323 is provided on the end of the connector 320 that abuts against the battery pack 200. A mounting hole 3231 is provided on the base plate 323 at the position corresponding to the explosion-proof valve 210. The size and shape of the mounting hole 3231 are adapted to the outer contour of the explosion-proof valve 210 so that the explosion-proof valve 210 can be inserted into the first smoke exhaust channel 322.

[0091] An installation groove 220 is provided on the periphery of the base plate 323 near the mounting hole 3231. The seal 400 is placed in the installation groove 220. The base plate 323 abuts against the battery pack 200. At this time, the seal 400 is equivalent to being placed in the first smoke exhaust channel 322. The seal 400 seals the gap between the explosion-proof valve 210 and the mounting hole 3231, reducing the risk of high-temperature flue gas leakage.

[0092] Reference Figure 6 As shown, in one possible implementation, the smoke exhaust component 310 includes a first support portion 313, a mounting portion 314, and a second support portion 315 connected in sequence. The first support portion 313 and the second support portion 315 are located on the same side of the mounting portion 314. A connector 320 is inserted into the mounting portion 314. The first support portion 313 and the second support portion 315 abut against the side of the energy storage cabinet 100. The first support portion 313, the mounting portion 314, the second support portion 315, and part of the side of the energy storage cabinet 100 together form a second smoke exhaust channel 311.

[0093] The first support portion 313 and the second support portion 315 are disposed on the same side of the mounting portion 314, extend to the same side along the length direction of the mounting portion 314, and respectively abut against the side plate, side beam or frame of the energy storage cabinet 100 to define the two side boundaries of the second smoke exhaust channel 311; the connector 320 is inserted into the smoke exhaust component 310 through the mounting portion 314 and forms a relatively fixed cooperation relationship with the mounting portion 314, thereby connecting the first smoke exhaust channel 322 of the connector 320 with the second smoke exhaust channel 311 formed by the smoke exhaust component 310.

[0094] The first support part 313, the mounting part 314, and the second support part 315 can be made of bent plates, integral stamped parts, or welded splicing parts. They can also be made of box-shaped profiles, U-shaped profiles, or locally reinforced plate shell structures. The materials can be stainless steel plates, galvanized steel plates, aluminum alloy plates, or heat-resistant composite sandwich panels to adapt to the temperature rise, vibration, and flue gas scouring environment inside the energy storage cabinet 100.

[0095] The extension height of the first support part 313 and the second support part 315 can be determined according to the enclosing dimensions from the side of the energy storage cabinet 100 to the center of the channel, so as to ensure that the contact length with the side of the energy storage cabinet 100 is sufficient to form a continuous sealing boundary. The opening size of the mounting part 314 matches the shape of the connector 320. A fitting gap suitable for assembly and thermal expansion and contraction can be reserved between the two. The cross-sectional area of ​​the second smoke exhaust channel 311 should meet the maximum flow requirement during abnormal smoke exhaust and be coordinated with the flow capacity of the first smoke exhaust channel 322.

[0096] It should be understood that the above examples are for demonstration purposes only and are not limiting. The first support 313 and the second support 315 can also be formed by a single bent section, or by welding together multiple sections. The second smoke exhaust channel 311 can also be set as a straight-through type, a deflector type or a segmented type according to the layout of the energy storage cabinet 100, so as to adapt to different energy storage cabinet 100 structures.

[0097] During normal operation, the connector 320 is inserted into the mounting part 314 and forms a stable assembly relationship with the smoke exhaust component 310. The first support part 313 and the second support part 315 press against the side of the energy storage cabinet 100, so that the smoke exhaust component 310, the side of the energy storage cabinet 100 and the mounting part 314 together define the enclosed space of the second smoke exhaust channel 311. When the battery pack 200 releases high-temperature smoke through the explosion-proof valve 210 in a thermal runaway state, the smoke first enters the smoke exhaust component 310 through the first smoke exhaust channel 322 in the connector 320, and then is discharged to the outside along the second smoke exhaust channel 311 formed by the first support part 313, the mounting part 314, the second support part 315 and the side of the energy storage cabinet 100.

[0098] Since the second smoke exhaust channel 311 is formed by the smoke exhaust component 310 and the side of the energy storage cabinet 100, the enclosed boundary is stable. At the same time, the first support part 313 and the second support part 315 support both sides of the mounting part 314, improving the deformation resistance and load-bearing capacity of the connection area between the smoke exhaust component 310 and the energy storage cabinet 100. Based on the above analysis, it can be seen that without increasing the space occupied inside the energy storage cabinet 100, a compact arrangement and stable flow guidance of the smoke exhaust path are achieved, thereby improving the structural reliability of the energy storage device under thermal runaway or abnormal smoke exhaust conditions.

[0099] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, based on the aforementioned embodiments, a second flange 316 is further provided on both the first support portion 313 and the second support portion 315. The side of the energy storage cabinet 100 has a first mounting plate 110 and a second mounting plate 120 covering the first mounting plate 110. A second mounting port 111 is provided on the first mounting plate 110. The smoke exhaust component 310 is inserted into the first mounting plate 110 through the second mounting port 111. The second flange 316 abuts against and connects with the side of the first mounting plate 110 facing the second mounting port 111. And / or, the first support portion 313 and the second support portion 315 extend from the top of the energy storage cabinet 100 to the bottom of the energy storage cabinet 100.

[0100] In one possible embodiment, the first mounting plate 110 and the second mounting plate 120 may be made of steel plate, stainless steel plate or aluminum alloy plate respectively. They may also be composed of a single-layer plate and a local reinforcing plate. The second flange 316 may be a right-angle flange, a rounded flange or a folded edge reinforcement structure to adapt to different assembly tolerances and stress requirements.

[0101] The width of the second flange 316 can be set to several millimeters to tens of millimeters to form a sufficient overlapping area. The size of the second mounting port 111 is slightly larger than the insertion outline of the smoke exhaust component 310 to ensure smooth assembly and take into account positioning accuracy.

[0102] When the first support portion 313 and the second support portion 315 extend from the top to the bottom of the energy storage cabinet 100, the length of the smoke exhaust component 310 can approach the height of the energy storage cabinet 100, thereby forming a continuous long-dimensional smoke exhaust boundary on the side of the energy storage cabinet 100. It should be understood that the above example is merely illustrative and not limiting.

[0103] In one possible embodiment, when the first support 313 and the second support 315 extend from the top of the energy storage cabinet 100 to the bottom of the energy storage cabinet 100, they can be long strips, folded plates, or profile reinforcements, respectively, and are arranged vertically along the side of the energy storage cabinet 100, so that the effective collection range of the second smoke exhaust channel 311 covers the height range of the energy storage cabinet 100, so that when pressure relief and smoke exhaust occur at different installation heights of the battery pack 200, the smoke can be introduced into the same second smoke exhaust channel 311.

[0104] The contact relationship between the second flange 316 and the first mounting plate 110 not only enhances the connection rigidity between the smoke exhaust component 310 and the side plate of the energy storage cabinet 100, but also keeps the interface position between the smoke exhaust component 310 and the energy storage cabinet 100 stable when the energy storage cabinet 100 is subjected to thermal deformation, transportation vibration or instantaneous smoke exhaust impact, reducing the probability of gap formation.

[0105] Meanwhile, the arrangement of the first support part 313 and the second support part 315 extending from the top to the bottom can increase the effective length of contact with the side of the energy storage cabinet 100, reduce local stress concentration, and improve the load-bearing capacity and flow continuity of the smoke exhaust assembly 300.

[0106] The smoke exhaust component 310 is first inserted into the first mounting plate 110 through the second mounting port 111. Then, the second flange 316 is fitted against the side of the first mounting plate 110 facing the second mounting port 111, and then fixed by fastening or welding. Additionally, this application provides an explosion relief plate 510 on the top of the energy storage cabinet 100. Figure 1 As shown, the second smoke exhaust channel 311 is connected to the explosion relief plate 510, so that the second smoke exhaust channel 311 is connected to the outside through the explosion relief plate 510. When the battery pack 200 is in a thermal runaway state, the explosion-proof valve 210 exhausts the smoke to the connector 320, and then to the second smoke exhaust channel 311 of the smoke exhaust component 310, and finally to the outside through the explosion relief plate 510.

[0107] The flue gas can be discharged along the path formed by the battery pack 200, connector 320, exhaust component 310 and second exhaust channel 311, and discharged to the outside through the exhaust port. This improves the structural reliability of the exhaust connection and the range of flue gas collection without occupying the internal space of the energy storage cabinet 100, reduces the risk of flue gas leakage into the interior of the energy storage cabinet 100, and thus suppresses heat spread and improves the operational safety of the energy storage device.

[0108] Reference Figure 6 and Figure 7 As shown, based on the aforementioned embodiment, the first support portion 313 and / or the second support portion 315 further have through holes 317 communicating with the second smoke exhaust channel 311, and the through holes 317 are communicating with the interior of the energy storage cabinet 100.

[0109] In one possible embodiment, the through hole 317 is an opening structure formed on the first support portion 313 or the second support portion 315 of the smoke exhaust component 310, used to guide the smoke in the internal space of the energy storage cabinet 100 into the second smoke exhaust channel 311, so that the high-temperature gas abnormally generated in the cabinet can be discharged to the outside through the smoke exhaust component 300.

[0110] The through hole 317 can be located on the first support 313, the second support 315, or both the first support 313 and the second support 315. One side of the through hole 317 is directly connected to the second exhaust channel 311, and the other side opens towards the inside of the energy storage cabinet 100 to form a gas exchange interface between the inside of the energy storage cabinet 100 and the exhaust channel.

[0111] The through holes 317 can be located on one side wall, top wall, side wall, or end of the first support portion 313 or the second support portion 315 near the interior of the energy storage cabinet 100. Multiple through holes can also be spaced apart along the length of the first support portion 313 or the second support portion 315 to improve the uniformity of flue gas introduction. Since the through holes 317 need to withstand long-term vibrations, temperature changes, and instantaneous airflow impacts during exhaust, the opening edges of the through holes 317 can be provided with folded edges, flanged edges, wrapped edges, or local reinforcing ribs to improve the overall rigidity of the opening area and reduce stress concentration.

[0112] The through hole 317 can be a round hole, an oblong hole, a rectangular hole, a louvered hole, or an array of holes composed of multiple small holes. The specific form of the through hole 317 can be selected according to the cross-sectional dimensions of the second smoke exhaust channel 311, the internal layout space of the energy storage cabinet 100, and the desired smoke exhaust flow rate.

[0113] The dimensions of the through hole 317 should match the cross-sectional area of ​​the second smoke exhaust channel 311 and the expected smoke emission volume. For example, the opening diameter, side length or equivalent flow area of ​​the through hole 317 can be designed according to the exhaust requirements of a single battery pack 200 in the cabinet during thermal runaway. The total flow area can be formed by combining multiple small holes, or a single large hole can be used in conjunction with flow limiting components to ensure smoke exhaust capacity while taking into account structural stability and protection requirements.

[0114] In this application, the through hole 317 enables the second exhaust channel 311 to not only connect with the external exhaust port, but also to establish a direct air passage connection with the internal space of the energy storage cabinet 100. When the battery pack 200 experiences abnormal temperature rise and abnormal smoke is generated inside the energy storage cabinet 100, the smoke can be guided through the through hole 317 into the second exhaust channel 311 inside the energy storage cabinet 100, and then discharged to the outside through the exhaust port.

[0115] The through hole 317 plays a role in guiding and collecting airflow, enabling the flue gas inside the energy storage cabinet 100 to be collected and discharged in a short path, reducing the possibility of flue gas stagnation and diffusion inside the energy storage cabinet 100, thereby improving the smoke exhaust efficiency and reducing the risk of leakage caused by poor local sealing or connection gaps.

[0116] Based on the above analysis, it can be seen that, without increasing the external space occupied, the connectivity between the smoke exhaust component 300 and the internal space of the energy storage cabinet 100 can be enhanced, the reliability of smoke exhaust can be improved, and the safety protection capability of the energy storage device under battery pack thermal runaway conditions can be improved. It should be understood that the above example is only for demonstration and is not a limitation. The specific number, distribution location, hole shape and processing method of the through holes 317 can be adjusted according to the size of the energy storage cabinet 100, the smoke exhaust flow rate and the structural layout.

[0117] Reference Figures 1 to 3As shown, in one possible implementation, an exhaust fan 500 is installed inside the energy storage cabinet 100. The exhaust fan 500 corresponds to the through hole 317 and is used to draw the smoke from inside the energy storage cabinet 100 and through hole 317 to the outside.

[0118] The exhaust fan 500 can be arranged near the through hole 317 and fixed inside the energy storage cabinet 100 by mounting brackets, vibration damping seats or guide hoods, so that the air inlet side or suction side of the exhaust fan 500 corresponds to the flow direction of the through hole 317, so that when the battery pack 200 is abnormally heated but the pressure is not high, the smoke at the through hole 317 can be promptly drawn to the outside. In this application, the exhaust fan 500 is compatible with an exhaust port. When the battery pack 200 is abnormally heated but the pressure is not high, the smoke is preferentially discharged from the exhaust port at the exhaust fan 500. When the battery pack 200 is in a thermal runaway state and the pressure is too high, the exhaust port at the exhaust fan 500 and the explosion relief plate 510 exhaust smoke together to achieve rapid smoke exhaust.

[0119] Since the internal space of the energy storage cabinet 100 is limited and the working environment involves vibration and temperature rise, the exhaust fan 500 can be a centrifugal fan, axial fan or mixed flow fan. It can also be a multi-blade fan, blower, induced draft fan or a combination of multiple distributed small fans, depending on the internal layout of the energy storage cabinet 100.

[0120] To match the flow capacity of the through-hole 317, the air volume, static pressure, and impeller size of the exhaust fan 500 are typically selected based on the volume of the energy storage cabinet 100, the number of battery packs 200, and the estimated amount of flue gas generated. The fan diameter, impeller width, and rotational speed should be coordinated with the cross-sectional area of ​​the through-hole 317 and the flow resistance of the second exhaust channel 311 to avoid flue gas stagnation due to insufficient air volume, or local noise, overload, or airflow turbulence caused by excessive suction. It should be understood that the above examples are for illustrative purposes only and are not limiting.

[0121] In one possible embodiment, the exhaust fan 500 inside the energy storage cabinet 100 continuously draws in the hot flue gas inside the energy storage cabinet 100 under the action of pressure difference and collects it at the through hole 317. After the flue gas enters the second exhaust channel 311 connected to the through hole 317, it is then guided to the outside along the exhaust component 310 and discharged, thereby shortening the residence time of the flue gas inside the energy storage cabinet 100, reducing the risk of temperature and pressure accumulation inside the energy storage cabinet 100, and reducing the possibility of the flue gas spreading to other areas inside the energy storage cabinet 100.

[0122] Since the exhaust fan 500 is set to correspond with the through hole 317, the flue gas in the energy storage cabinet 100 can be drawn to the through hole 317 by the exhaust fan 500, and then discharged to the outside through the second exhaust channel 311, thereby improving the exhaust efficiency and system safety in the event of abnormal flue gas in the energy storage cabinet 100.

[0123] Meanwhile, the exhaust fan 500, through its active extraction function, reduces the flow resistance impact of relying solely on pressure relief and natural convection, ensuring that the through-hole 317 always maintains a relatively effective flow guidance state. This improves the smoke collection capacity when multiple battery packs 200 malfunction simultaneously, and enhances exhaust reliability under the limited internal space of the energy storage cabinet 100. It should be understood that the above example is merely illustrative and not limiting.

[0124] Reference Figure 4 As shown, based on the aforementioned embodiments, the energy storage device further includes the above-mentioned energy storage device, the number of battery packs 200 is multiple, the multiple battery packs 200 are arranged sequentially at intervals along the height direction of the energy storage cabinet 100, and the explosion-proof valves 210 of the multiple battery packs 200 all have the same orientation; the number of connectors 320 is multiple, and the connectors 320 are arranged in a one-to-one correspondence with the explosion-proof valves 210.

[0125] Multiple battery packs 200 are arranged sequentially at intervals along the height of the energy storage cabinet 100, so that assembly gaps are formed between adjacent battery packs 200 for heat dissipation, wiring and component avoidance. At the same time, multiple explosion-proof valves 210 are oriented in the same direction, so that the pressure relief port of each explosion-proof valve 210 faces the predetermined smoke exhaust interface, thereby facilitating the standardized arrangement and unified connection of the smoke exhaust assembly 300.

[0126] Multiple connectors 320 are provided, and each connector 320 corresponds one-to-one with each explosion-proof valve 210. These connectors 320 are arranged one-to-one at the explosion-proof valve 210 positions of each battery pack 200, ensuring that abnormal smoke from each battery pack 200 can be individually connected to the exhaust system via the corresponding connector 320. This prevents cross-flow of smoke between different battery packs 200 and also helps to separately bear the exhaust pressure when multiple battery packs 200 malfunction simultaneously, improving exhaust response efficiency and structural reliability.

[0127] The spacing between multiple battery packs 200 can be set according to the height of the energy storage cabinet 100, heat dissipation requirements, and the thickness of the smoke exhaust assembly 300. It should be ensured that the connector 320, after assembly, does not interfere with adjacent battery packs 200 or other internal components. The center position of the connector 320 should correspond to the center position of the explosion-proof valve 210 to facilitate axial alignment and stable insertion during assembly. It should be understood that the above example is for illustrative purposes only and is not limiting.

[0128] Multiple battery packs 200 are installed in layers along the height of the energy storage cabinet 100 inside the energy storage cabinet 100, with the explosion-proof valves 210 of each battery pack 200 facing the same direction. Then, multiple connectors 320 are respectively assembled onto the corresponding explosion-proof valves 210, so that each connector 320 abuts against the corresponding battery pack 200 and forms a sealed flow guiding interface, thereby establishing a one-to-one communication relationship between each explosion-proof valve 210 and the smoke exhaust assembly 300.

[0129] Under normal operating conditions, each connector 320 positions and limits the area around the explosion-proof valve 210, and together with the smoke exhaust component 310, limits the flow of smoke. When any battery pack 200 experiences abnormal heating and its internal pressure increases, the high-temperature smoke released by the explosion-proof valve 210 corresponding to the battery pack 200 can directly enter the corresponding connector 320, and be guided into the smoke exhaust component 310 along the preset smoke exhaust path, and then further discharged to the outside through the smoke exhaust component 310.

[0130] Because multiple battery packs 200 are spaced apart along the height direction and each explosion-proof valve 210 has an independent corresponding connector 320, flue gas can be received and quickly discharged at the stratified location, reducing the possibility of lateral diffusion and accumulation inside the energy storage cabinet 100. It also reduces the risk of local instability caused by a single exhaust port bearing the pressure relief impact of multiple battery packs 200. Based on the above analysis, the arrangement of multiple battery packs 200, while ensuring structural stability, can improve the exhaust efficiency and safety redundancy under parallel operation of multiple battery packs 200, and improve the orderly utilization of space inside the energy storage cabinet 100. It should be understood that the above example is for demonstration purposes only and is not limiting.

[0131] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An energy storage device, characterized in that, include: Energy storage cabinet (100); A battery pack (200) is installed inside the energy storage cabinet (100), and an explosion-proof valve (210) is installed on the battery pack (200). A smoke exhaust assembly (300) includes a smoke exhaust component (310) and a connector (320). The smoke exhaust component (310) is connected to the energy storage cabinet (100). The connector (320) has a first flange (321). The connector (320) is inserted into the smoke exhaust component (310). The first flange (321) abuts against and connects with the smoke exhaust component (310). The connector (320) has a first smoke exhaust channel (322). The connector (320) abuts against the battery pack (200), and the explosion-proof valve (210) is located in the first smoke exhaust channel (322). The smoke exhaust component (310) has a second smoke exhaust channel (311) that communicates with the first smoke exhaust channel (322). The second smoke exhaust channel (311) is used to communicate with the outside.

2. The energy storage device according to claim 1, characterized in that, The smoke exhaust component (310) is provided with a first mounting port (312), and the connector (320) is inserted into the smoke exhaust component (310) through the first mounting port (312); The first flange (321) is arranged around the periphery of the connector (320), and the first flange (321) is located inside the second smoke exhaust channel (311).

3. The energy storage device according to claim 2, characterized in that, The first flange (321) is welded to the smoke exhaust component (310); And / or, the first flange (321) is integrally bent or stamped with the connector (320); And / or, the first flange (321) is welded to the connector (320).

4. The energy storage device according to claim 1, characterized in that, It also includes a seal (400) disposed on the battery pack (200) or the connector (320), the explosion-proof valve (210) being located in the area enclosed by the seal (400), and the seal (400) being used to seal the gap between the battery pack (200) and the connector (320).

5. The energy storage device according to claim 4, characterized in that, The battery pack (200) is provided with a mounting groove (220), the sealing element (400) is disposed in the mounting groove (220), and the connector (320) is inserted into the mounting groove (220); Alternatively, a base plate (323) may be provided on the connector (320), and a mounting hole (3231) may be provided on the base plate (323). The mounting hole (3231) is used for the explosion-proof valve (210) to enter the first smoke exhaust channel (322). The mounting groove (220) may be provided on the base plate (323), and the sealing element (400) may be provided in the mounting groove (220). The base plate (323) abuts against the battery pack (200).

6. The energy storage device according to claim 1, characterized in that, The smoke exhaust component (310) includes a first support part (313), a mounting part (314), and a second support part (315) connected in sequence. The first support part (313) and the second support part (315) are located on the same side of the mounting part (314). The connector (320) is inserted into the mounting part (314). The first support part (313) and the second support part (315) abut against the side of the energy storage cabinet (100). The first support part (313), the mounting part (314), the second support part (315), and part of the side of the energy storage cabinet (100) together form the second smoke exhaust channel (311).

7. The energy storage device according to claim 6, characterized in that, The first support part (313) and the second support part (315) are both provided with a second flange (316). The side of the energy storage cabinet (100) has a first mounting plate (110) and a second mounting plate (120) covering the first mounting plate (110). The first mounting plate (110) is provided with a second mounting port (111). The smoke exhaust component (310) is inserted into the first mounting plate (110) through the second mounting port (111). The second flange (316) abuts against and connects with the side of the first mounting plate (110) facing the second mounting port (111). And / or, the first support (313) and the second support (315) extend along the top of the energy storage cabinet (100) to the bottom of the energy storage cabinet (100).

8. The energy storage device according to claim 7, characterized in that, The first support (313) and / or the second support (315) have through holes (317) communicating with the second smoke exhaust channel (311), and the through holes (317) are communicating with the interior of the energy storage cabinet (100).

9. The energy storage device according to claim 8, characterized in that, The energy storage cabinet (100) is equipped with a smoke exhaust fan (500), which corresponds to the through hole (317). The smoke exhaust fan (500) is used to draw the smoke from the energy storage cabinet (100) and the through hole (317) to the outside.

10. The energy storage device according to any one of claims 1-9, characterized in that, The number of battery packs (200) is multiple, and the multiple battery packs (200) are arranged sequentially at intervals along the height direction of the energy storage cabinet (100). The explosion-proof valves (210) of the multiple battery packs (200) all have the same orientation. There are multiple connectors (320), and each connector (320) is provided in a one-to-one correspondence with the explosion-proof valve (210).

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