Energy storage cabinet having directional smoke discharge

Abstract

The present application provides an energy storage cabinet having directional smoke discharge. The energy storage cabinet comprises a cabinet body, a battery cluster and a smoke discharge apparatus. The battery cluster is contained in the cabinet body, and comprises multiple battery packs stacked along a height direction of the cabinet body; each battery pack comprises an explosion venting valve disposed on a surface of the battery pack parallel to the height of the cabinet body; a first housing of the smoke discharge apparatus is mounted on a back surface of the cabinet body, and located between the cabinet body and the explosion venting valves; a first smoke discharge channel is formed inside the first housing, and a first smoke outlet of the first housing is correspondingly connected to explosion venting valves; the smoke discharge apparatus further comprises a second housing, a second smoke discharge channel being formed inside the second housing, and the second housing being disposed in a through hole penetrating through the back surface of the cabinet body; the first housing and the second housing are provided with corresponding openings, so as to place the first smoke discharge channel and the second smoke discharge channel in communication; and a fourth smoke outlet is formed on a surface of the second housing, the surface being located on an outer side of the cabinet body. The energy storage cabinet provided by an embodiment of the present application can implement directional smoke discharge for the energy storage cabinet, thereby effectively addressing thermal runaway risks.

Description

Energy storage cabinet with directional smoke exhaust

[0001] This application claims priority to Chinese patent application No. 202420153781.7 filed with the State Intellectual Property Office of China on January 22, 2024, priority to Chinese patent application No. 202421203739.8 filed with the State Intellectual Property Office of China on May 29, 2024, priority to Chinese patent application No. 202422664831.0 filed with the State Intellectual Property Office of China on October 31, 2024, and titled “Energy Storage Cabinet with Directional Smoke Exhaust”. The entire contents of the above patent applications are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of new energy technology, and more specifically, to an energy storage cabinet with directional smoke exhaust. Background Art

[0003] With the rapid development of renewable energy, energy storage devices are needed to alleviate the pressure of peak and frequency regulation of the power grid. Among various energy storage methods, electrochemical energy storage is the fastest growing one.

[0004] Currently, an energy storage cabinet is known, which includes a cabinet body and multiple battery packs (PACKs) placed in the cabinet body. Thus, the cabinet body can isolate and protect the battery packs from the external environment, thereby improving the safety of the battery packs.

[0005] However, poor temperature uniformity between cells or overcharge and discharge can create a risk of thermal runaway. Thermal runaway can generate large amounts of high-temperature gas, which can spread within the cabinet and cause secondary damage, such as fire or even explosion. Such safety incidents have become commonplace in recent years.

[0006] How to effectively deal with the above-mentioned thermal runaway risks and improve the safety of energy storage cabinets has become an urgent problem to be solved. Summary of the Invention

[0007] The present application provides an energy storage cabinet with directional smoke exhaust, which can effectively deal with the risk of thermal runaway and improve the safety of the energy storage cabinet.

[0008] In a first aspect, a directional smoke exhaust energy storage cabinet is provided, comprising a cabinet body, a battery cluster and a smoke exhaust device, wherein the cabinet body comprises a top surface and a bottom surface arranged oppositely, two side surfaces arranged oppositely, and a back surface and a cabinet door arranged oppositely, and the back surface is provided with a through hole running through the back surface; the battery cluster is accommodated in the cabinet body, and the battery cluster comprises a plurality of battery packs stacked along the height direction of the cabinet body, and an explosion relief valve is provided on the surface of each battery pack facing the back surface; the smoke exhaust device comprises a first shell, and the first shell is arranged between the back surface and the battery pack; a first smoke exhaust channel is formed inside the first shell, and a plurality of first smoke exhaust ports are provided on a side of the first shell facing the battery pack, and the plurality of first smoke exhaust ports are all connected to the first smoke exhaust channel, and the plurality of The first smoke exhaust ports correspond one-to-one to the multiple explosion relief valves, and each first smoke exhaust port is sealedly connected to the corresponding explosion relief valve. A second smoke exhaust port is provided on the side of the first shell facing the back side, and the second smoke exhaust port is communicated with the first smoke exhaust channel; the smoke exhaust device also includes a second shell, a second smoke exhaust channel is formed inside the second shell, the second shell is arranged in the through hole, and a third smoke exhaust port is provided on the side of the second shell facing the battery pack, and the third smoke exhaust port is communicated with the second smoke exhaust channel, and the third smoke exhaust port is sealedly connected to the second smoke exhaust port, and a fourth smoke exhaust port is provided on a surface of the second shell away from the battery pack along the width direction of the cabinet, and the fourth smoke exhaust port is communicated with the second smoke exhaust channel.

[0009] The energy storage cabinet provided in the embodiment of the present application forms a first smoke exhaust channel and a second smoke exhaust channel by sealingly connecting the explosion relief valve and the first smoke exhaust port of the first shell, and sealingly connecting the second smoke exhaust port of the first shell and the third smoke exhaust port of the second shell. This allows the gas released from the explosion relief valve to flow from the first smoke exhaust channel of the smoke exhaust device to the second smoke exhaust channel, and then be discharged out of the cabinet body, thereby effectively addressing the risk of thermal runaway, safely discharging the gas, and improving the safety of the energy storage cabinet.

[0010] In one implementation, a partition is provided in the second smoke exhaust channel, the partition is parallel to the back side, and the partition divides the second smoke exhaust channel into a first cavity and a second cavity, the first cavity is connected to the first smoke exhaust channel, and the second cavity is connected to the fourth smoke exhaust port; the partition includes an opening, and the first cavity and the second cavity are connected via the opening.

[0011] The energy storage cabinet provided in the embodiment of the present application, by providing a partition and an opening on the partition in the second smoke exhaust channel, can, on the one hand, guide the flow of gas and act as a buffer in the path of gas flowing out of the cabinet; on the other hand, it can effectively isolate external rainwater and reduce the risk of rainwater intrusion into the first cavity and the first smoke exhaust channel.

[0012] In one implementation, along the height direction of the cabinet, a vertical distance from one end of the opening away from the top surface to the bottom surface of the cabinet is greater than a vertical distance from one end of the fourth smoke exhaust port away from the bottom surface of the cabinet to the bottom surface of the cabinet.

[0013] The energy storage cabinet provided in the embodiment of the present application effectively prevents the risk of wetting the first and second smoke exhaust channels caused by oblique rainwater invading from the fourth smoke exhaust port and then the opening in sequence, by setting the opening position in the cabinet body height direction higher than the fourth smoke exhaust port.

[0014] In one embodiment, the second cavity includes a first baffle, the first end of the first baffle is arranged on the partition, and there is a gap between the second end of the first baffle and a surface of the second shell away from the battery pack along the width direction of the cabinet, and the first end of the first baffle and the second end of the first baffle are opposite ends in the width direction of the cabinet.

[0015] The energy storage cabinet provided in the embodiment of the present application can effectively prevent rainwater entering from the outside from further invading the first cavity and the first smoke exhaust channel by providing a first baffle arranged along the height direction of the cabinet body in the second cavity.

[0016] In one implementation, the second cavity further includes a second baffle, the first baffle and the second baffle are arranged along the height direction of the cabinet, the first end of the second baffle is arranged on a surface of the second shell away from the battery pack along the width direction of the cabinet, there is a gap between the second end of the second baffle and the partition, and the first end of the second baffle and the second end of the second baffle are opposite ends in the width direction of the cabinet.

[0017] The energy storage cabinet provided in the embodiment of the present application can effectively prevent rainwater entering from the outside from further invading the first cavity and the first smoke exhaust channel by providing a second baffle arranged along the height direction of the cabinet body in the second cavity.

[0018] In one implementation, the vertical distance from the first end of the first baffle to the bottom surface of the cabinet is less than or equal to the vertical distance from the end of the opening away from the top surface along the height direction of the cabinet to the bottom surface of the cabinet, and is greater than the vertical distance from the second end of the first baffle to the bottom surface of the cabinet; the vertical distance from the first end of the second baffle to the bottom surface of the cabinet is greater than or equal to the vertical distance from the end of the fourth smoke exhaust port away from the bottom surface of the cabinet along the height direction of the cabinet to the bottom surface of the cabinet, and is greater than the vertical distance from the second end of the second baffle to the bottom surface of the cabinet; the vertical distance from the second end of the first baffle to the bottom surface of the cabinet is greater than the vertical distance from the second end of the second baffle to the bottom surface of the cabinet.

[0019] The energy storage cabinet provided in the embodiment of the present application accelerates the guidance of gas out of the cabinet by setting the inclination direction of the first baffle and the second baffle, and can also effectively prevent rainwater from intruding into the first cavity and the first smoke exhaust channel.

[0020] In one implementation, one end of the fourth smoke exhaust port away from the top surface along the height direction of the cabinet overlaps with the first side, and the first side is the side formed by the intersection of the bottom surface of the second smoke exhaust channel and the surface of the second shell provided with the fourth smoke exhaust port; the bottom surface of the second smoke exhaust channel is a slope, and the vertical distance from the first side to the bottom surface of the cabinet is smaller than the vertical distance from the second side to the bottom surface of the cabinet, and the second side is the side formed by the intersection of the bottom surface of the second smoke exhaust channel and the surface of the second shell provided with the third smoke exhaust port.

[0021] The energy storage cabinet provided in the embodiment of the present application, by setting the bottom surface of the second smoke exhaust channel as an inclined surface, and the fourth smoke exhaust port being connected to the bottom surface of the second smoke exhaust channel or the bottom surface of the second cavity, is conducive to the timely discharge of rainwater entering from the outside from the cabinet along the inclined surface through the fourth smoke exhaust port, thereby reducing the risk of rainwater entering the interior of the smoke exhaust device.

[0022] In one implementation, one end of the fourth smoke exhaust port away from the top surface along the height direction of the cabinet overlaps with the first side, and the first side is the side formed by the intersection of the bottom surface of the second cavity and a surface of the second shell away from the battery pack along the width direction of the cabinet; the bottom surface of the second cavity is a slope, and the vertical distance from the first side to the bottom surface of the cabinet is less than the vertical distance from the third side to the bottom surface of the cabinet, and the third side is the side formed by the intersection of the bottom surface of the second cavity and the partition.

[0023] The energy storage cabinet provided in the embodiment of the present application, by setting the bottom surface of the second cavity as an inclined surface, and the fourth smoke exhaust port being connected to the bottom surface of the second smoke exhaust channel or the bottom surface of the second cavity, is conducive to the timely discharge of rainwater entering from the outside from the cabinet along the inclined surface through the fourth smoke exhaust port, thereby reducing the risk of rainwater entering the interior of the smoke exhaust device.

[0024] In one implementation manner, a sealing body is provided at the connection between each first smoke exhaust port and the corresponding explosion relief valve.

[0025] The energy storage cabinet provided in the embodiment of the present application improves the sealing effect by providing a sealing body between the explosion relief valve and the first smoke exhaust port.

[0026] In one implementation manner, along the height direction of the cabinet, the second shell is located in the upper half of the back surface.

[0027] The energy storage cabinet provided in the embodiment of the present application facilitates the discharge of gas out of the cabinet by arranging the second shell near the top surface of the cabinet.

[0028] In one implementation manner, the fourth smoke exhaust port is an opening or is composed of a plurality of fine holes, and the plurality of fine holes are dispersedly arranged on a surface of the second shell away from the battery pack along the width direction of the cabinet.

[0029] The energy storage cabinet provided in the embodiment of the present application can form waterproof protection by dispersing a plurality of fine holes on the surface of the second shell, thereby better preventing rainwater outside the cabinet from entering the interior of the smoke exhaust device.

[0030] In one implementation, a third baffle is provided in the second smoke exhaust channel, the third baffle is perpendicular to the side of the cabinet and covers the third smoke exhaust port, the first end of the third baffle is movably connected to the intersection of one end facing the top plate and the side of the second shell away from the bottom surface of the cabinet, the first end of the third baffle is the end close to the top surface along the height direction of the cabinet, and the third baffle can rotate with the first end as the axis.

[0031] In one implementation manner, a vertical distance between the first end of the third baffle and a side of the second shell away from the battery pack along the width direction of the cabinet is greater than or equal to a second threshold.

[0032] The embodiment of the present application sets a third baffle in the second smoke exhaust channel and uses the movable connection of the third baffle to prevent rainwater from entering the first smoke exhaust channel when there is no gas discharge from the explosion relief valve. When there is gas discharge from the explosion relief valve, the natural pressure of the gas flow drives the third baffle to swing, thereby providing a channel for the gas to circulate and discharge the gas out of the cabinet.

[0033] In one implementation, the energy storage cabinet further includes a flow guide tube. One end of the flow guide tube communicates with the first smoke exhaust channel via a first drain port on the first shell; the other end of the flow guide tube communicates with the exterior of the energy storage cabinet via a second drain port on the bottom surface. The first drain port is provided at one end of the first shell, proximate to the bottom surface, along the height direction of the cabinet. Along the height direction of the cabinet, the vertical distance between the first drain port and the bottom surface is less than the vertical distance between any of the first smoke exhaust ports and the bottom surface.

[0034] This embodiment of the present application provides a flow guide tube, one end of which is connected to the lowest end of the first smoke exhaust channel and the other end of which is connected to the second drain port on the bottom of the cabinet. In the event of thermal runaway, high-temperature electrolyte released from the battery pack is sprayed into the first smoke exhaust channel, flows downward along the smoke exhaust channel, and then flows directly out of the energy storage cabinet through the flow guide tube and the drain port on the bottom of the cabinet, effectively preventing cabinet corrosion and combustion risks caused by electrolyte accumulation.

[0035] In one implementation manner, a leakage plate is provided in the second liquid drain port, and the leakage plate is a grid structure.

[0036] In the embodiment of the present application, a leakage plate is provided in the second drain port on the bottom surface, so that the electrolyte can be smoothly discharged from the cabinet and mosquitoes and other debris can be effectively prevented from entering the smoke exhaust channel from the bottom of the cabinet.

[0037] In a second aspect, an energy storage system is provided, comprising a plurality of energy storage cabinets and power converters as described in the first aspect, wherein the power converter is used to perform power conversion on the voltage output by the battery pack of the energy storage cabinet and output the converted voltage to an external network or an external load, and / or the power converter is used to perform power conversion on the voltage output by an external power supply and output the converted voltage to the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG1 is a schematic diagram of an energy storage cabinet with directional smoke exhaust provided in an embodiment of the present application.

[0039] FIG2 is a schematic diagram of a battery cluster suitable for use in an embodiment of the present application.

[0040] FIG3 is a schematic diagram of a battery pack suitable for an embodiment of the present application.

[0041] FIG4 is a schematic diagram of a smoke exhaust device applicable to an embodiment of the present application.

[0042] FIG5 is a schematic diagram of a first shell applicable to an embodiment of the present application.

[0043] FIG6 is a schematic diagram of a smoke exhaust device applicable to an embodiment of the present application.

[0044] FIG7 is a schematic diagram of a smoke exhaust device applicable to an embodiment of the present application.

[0045] FIG8 is a schematic diagram of a smoke exhaust device applicable to an embodiment of the present application.

[0046] FIG9 is a schematic diagram of a fourth smoke exhaust port applicable to an embodiment of the present application.

[0047] FIG10 is a schematic diagram of a smoke exhaust device applicable to an embodiment of the present application.

[0048] FIG11 is a schematic diagram of a third baffle applicable to an embodiment of the present application.

[0049] FIG12 is a schematic diagram of a third baffle applicable to an embodiment of the present application.

[0050] FIG13 is a schematic diagram of the back side of an energy storage cabinet for directional smoke exhaust provided in an embodiment of the present application.

[0051] FIG14 is a schematic diagram of an energy storage cabinet with directional smoke exhaust provided in an embodiment of the present application.

[0052] FIG15 is a schematic diagram of another energy storage cabinet with directional smoke exhaust provided in an embodiment of the present application.

[0053] FIG16 is a schematic diagram of another energy storage cabinet with directional smoke exhaust provided in an embodiment of the present application.

[0054] Reference numerals 100 - energy storage cabinet; 110 - cabinet body; 111 - top surface; 112 - bottom surface of the cabinet body; 113 - first side surface; 114 - second side surface; 115 - back surface; 116 - Battery rack; 1121-second drain port; 1122-leakage plate; 120-battery cluster; 10-battery pack; 11-explosion relief valve; 20-smoke exhaust device; 21-first shell; 211-first smoke exhaust channel; 212-first smoke exhaust port; 213-second smoke exhaust port; 22-second shell; 220-second smoke exhaust channel; 221-third smoke exhaust port; 222-fourth smoke exhaust port; 2101-first drain port; 300-partition; 2201-first cavity; 2202-second cavity; 301-first baffle; 302-second baffle; 23-sealing body; 400-third baffle; 30-smoke exhaust shell; 310-fifth smoke exhaust port; 312-sixth smoke exhaust port; 313-third smoke exhaust channel; 214-protruding structure; 500-flow guide pipe. DETAILED DESCRIPTION

[0055] The technical solution in this application will be described below with reference to the accompanying drawings.

[0056] FIG1 is a schematic diagram of an energy storage cabinet 100 according to an embodiment of the present application. As shown in FIG1 , the energy storage cabinet 100 includes a cabinet body 110 and a battery pack 10 disposed within the cabinet body 110 .

[0057] As shown in FIG1 , the cabinet body 110 includes a top surface 111 , a bottom surface 112 , a first side surface 113 , a second side surface 114 , a back surface 115 and an openable and closable cabinet door (not shown).

[0058] The cabinet 110 is provided with a plurality of battery racks 116, which are arranged parallel to the first side surface 113 or the second side surface 114. The plurality of battery racks 116 are used to place battery packs. In other words, a battery pack 10 can be clamped and fixed by two adjacent battery racks 116.

[0059] It should be noted that, for ease of understanding and observation, Figure 1 only shows a situation including one battery pack 10, but the embodiments of the present application are not limited to this. For example, as shown in Figure 2, multiple battery packs can also be placed in the energy storage cabinet 100, and, for example, each column of battery packs can constitute a battery cluster 120.

[0060] FIG3 is a schematic diagram of a battery pack 10 provided in the present application. An explosion relief valve 11 is provided on the surface of each battery pack 10 facing the back surface 115 . The explosion relief valve 11 is used to release high-pressure gas inside the battery pack 10 .

[0061] In some embodiments, the explosion relief valve 11 of the battery pack 10 may include a pressure sensing device, a valve, and a sealing structure. The pressure sensing device may be a spring or a pressure sensor. When the internal pressure of the battery pack exceeds the safe range, the pressure sensing device is activated. The valve is used to release the overpressure gas generated inside. The sealing structure is used to prevent the liquid or gas inside the battery pack from leaking to avoid short circuits or other safety problems. When abnormal conditions such as overcharging, overdischarging, or battery short circuit occur inside the battery, and the internal pressure of the battery pack 10 exceeds the set threshold, the explosion relief valve 11 will be activated. After activation, the explosion relief valve 11 will release the gas accumulated inside the battery to reduce the internal pressure of the battery pack 10, which helps to reduce the risk of rupture or explosion of the battery pack 10. At the same time, the release of the explosion relief valve 11 may also take away some heat, thereby helping to lower the temperature of the battery pack 10 and reduce other dangers caused by local high temperature.

[0062] As shown in FIG. 1 and FIG. 2 , the energy storage cabinet 100 further includes a plurality of smoke exhaust devices 20 , and the plurality of smoke exhaust devices 20 are disposed in a one-to-one correspondence with the plurality of battery clusters 120 .

[0063] Figure 4 is a front view schematic diagram of the back side 115 of an energy storage cabinet provided in the present application. Each smoke exhaust device 20 includes a first shell 21. The first shell 21 is arranged between the back side 115 of the cabinet 110 and the battery pack 10. A plurality of first smoke exhaust ports 212 are provided on a side of the first shell 21 facing the battery pack 10. The plurality of first smoke exhaust ports 212 correspond one-to-one to a plurality of explosion relief valves 11. The explosion relief valves 11 are convex structures and are embedded in the first smoke exhaust ports 212. For ease of observation, the explosion relief valves 11 are not shown in Figure 4.

[0064] Figure 5 is a schematic diagram of a first housing 21 applicable to the present application. As shown in Figure 5 , a first smoke exhaust channel 211 is formed within the first housing 21. The first smoke exhaust channel 211 communicates with a plurality of first smoke exhaust ports 212. Each first smoke exhaust port is sealed with a corresponding explosion relief valve 11, allowing gas released from the explosion relief valve 11 to enter the first smoke exhaust channel 211 through the first smoke exhaust port 212. A second smoke exhaust port 213 is provided on the side of the first housing 21 facing the rear surface 115. The second smoke exhaust port 213 communicates with the first smoke exhaust channel 211.

[0065] Figure 6 is a schematic diagram of a smoke exhaust device 20 applicable to the present application. Figure 7 is an exploded schematic diagram of a smoke exhaust device 20 applicable to the present application.

[0066] As shown in Figures 6 and 7 , the smoke exhaust device 20 further includes a second housing 22, the interior of which forms a second smoke exhaust passage 220. A through-hole is provided through the back surface 115 of the cabinet, and the second housing 22 is disposed within the through-hole on the back surface 115 of the cabinet. A third smoke exhaust port 221 is provided on the side of the second housing 22 facing the battery pack 10. The third smoke exhaust port 221 communicates with the second smoke exhaust passage 220. The third smoke exhaust port 221 is sealedly connected to the second smoke exhaust port 213, thereby connecting the first smoke exhaust passage 211 with the second smoke exhaust passage 220. A fourth smoke exhaust port 222 is provided on a side of the second housing 22 along the width direction of the cabinet, away from the battery pack 10. The fourth smoke exhaust port 222 communicates with the second smoke exhaust passage 220 and is used to exhaust gas out of the cabinet.

[0067] It should be understood that, except for the first and second smoke exhaust ports, the rest of the first shell 21 is sealed; except for the third and fourth smoke exhaust ports 221 and 222, the rest of the second shell 22 is sealed.

[0068] Figure 8 is a cross-sectional schematic diagram of a smoke exhaust device provided in the present application. For example, when the battery pack suffers thermal runaway, the gas released by the explosion relief valve 11 flows into the first smoke exhaust channel 211 through the first smoke exhaust port 212, and the gas flows from the first smoke exhaust channel 211 into the second smoke exhaust port, and from the second smoke exhaust port into the second smoke exhaust channel 220, and then is discharged out of the cabinet through the fourth smoke exhaust port 222.

[0069] The energy storage cabinet provided in the embodiment of the present application forms a first smoke exhaust channel and a second smoke exhaust channel by sealingly connecting the explosion relief valve and the first smoke exhaust port of the first shell, and sealingly connecting the second smoke exhaust port of the first shell and the third smoke exhaust port 221 of the second shell. This allows the gas released from the explosion relief valve to flow from the first smoke exhaust channel of the smoke exhaust device to the second smoke exhaust channel, and then be discharged out of the cabinet body, thereby effectively addressing the risk of thermal runaway, safely discharging the gas, and improving the safety of the energy storage cabinet.

[0070] Conventional energy storage cabinets are equipped with exhaust vents or energy storage cabinet ventilation systems in preset areas of the energy storage cabinet. When exhaust vents are provided in preset areas of the energy storage cabinet (e.g., the back of the energy storage cabinet), the gas released from the explosion relief valve into the energy storage cabinet is discharged through pre-set smoke exhaust valves and fans. When a ventilation system is provided, the ventilation system can extract the smoke or gas released from the energy storage cabinet through the explosion relief valve to prevent the gas from spreading inside the energy storage cabinet. This process of discharging gas outside the cabinet through the active action of equipment or systems is called active smoke exhaust. However, active smoke exhaust requires the active opening of valves and other devices, which affects the smoke exhaust efficiency of the energy storage cabinet and is very likely to cause greater risks due to the diffusion of smoke inside the energy storage cabinet.

[0071] The smoke exhaust device provided in the present application can achieve passive smoke exhaust within the energy storage cabinet. That is, the first smoke exhaust channel and the second smoke exhaust channel are used to guide the gas to be automatically discharged outside the cabinet without using active equipment. The gas in the explosion relief valve is discharged promptly once it is discharged, which can improve the smoke exhaust efficiency of the energy storage cabinet. At the same time, it achieves directional smoke exhaust within the energy storage cabinet, prevents gas from diffusing within the energy storage box, and improves the safety performance within the energy storage cabinet.

[0072] In some embodiments, as shown in FIG7 , the second housing includes a partition 300 disposed within the second smoke exhaust passage 220 and parallel to the cabinet back surface 115. The partition 300 divides the second smoke exhaust passage 220 into a first cavity 2201 and a second cavity 2202. The first cavity 2201 communicates with the first smoke exhaust passage 211 and is located on one side of the partition 300, while the second cavity 2202 communicates with the fourth smoke exhaust port 222 and is located on the other side of the partition 300. The partition 300 includes an opening, and the first cavity 2201 and the second cavity 2202 communicate with each other through the opening.

[0073] The energy storage cabinet provided in the embodiment of the present application, by providing a partition 300 and an opening on the partition 300 in the second smoke exhaust channel, can, on the one hand, guide the flow of gas and act as a buffer for the gas flowing out of the cabinet body; on the other hand, it can effectively isolate external rainwater and reduce the risk of rainwater intrusion into the first cavity 2201 and the first smoke exhaust channel 211.

[0074] In some embodiments, the vertical distance between the opening and the bottom surface is greater than the vertical distance between the opening and the bottom surface of the fourth smoke exhaust port 222. By setting the opening higher in the cabinet height direction than the fourth smoke exhaust port 222, the risk of oblique rainwater intruding from the fourth smoke exhaust port and then the opening, which could cause the first and second smoke exhaust channels to get wet, is effectively prevented.

[0075] In some embodiments, the partition 300 may also be made of a waterproof curtain, such as a plastic film or a polymer material, to prevent water from entering the second smoke exhaust channel 220 and the first smoke exhaust channel 211 and keep the smoke exhaust device dry.

[0076] In some embodiments, as shown in Figures 7 and 8, the second cavity 2202 includes a first baffle 301, one end of the first baffle 301 is set on the partition 300, and there is a gap between the other end of the first baffle 301 and the surface of the second shell on which the fourth smoke exhaust port 222 is provided. One end of the second baffle 302 is set on the surface of the second shell on which the fourth smoke exhaust port 222 is provided, and there is a gap between the other end of the second baffle 302 and the partition 300.

[0077] In some embodiments, the second cavity 2202 further includes a second baffle 302 , and the first baffle 301 and the second baffle 302 are arranged along the height direction of the cabinet.

[0078] In some embodiments, the second cavity 2202 includes multiple first baffles 301 and / or multiple second baffles 302, wherein the multiple first baffles 301 or the multiple second baffles 302 are arranged along the height direction of the cabinet, or the multiple first baffles 301 and the multiple second baffles 302 are arranged in sequence or staggered along the height direction of the cabinet. This embodiment of the present application does not make any specific limitation on this.

[0079] The energy storage cabinet provided in the present application can effectively prevent rainwater from entering from the outside from further invading the first cavity 2201 and the first smoke exhaust channel by arranging the first baffle 301 and / or the second baffle 302 arranged along the height direction of the cabinet in the second cavity 2202.

[0080] In some embodiments, in combination with Figure 7, the first baffle 301 is inclined from the partition 300 toward the fourth smoke exhaust port 222, and the second baffle 302 is inclined from the surface of the second shell on which the fourth smoke exhaust port 222 is provided toward a direction away from the opening, and the vertical distance from the first end of the first baffle 301 to the bottom surface 112 of the cabinet is less than or equal to the vertical distance from the end of the opening away from the top surface along the height direction of the cabinet to the bottom surface of the cabinet, and is greater than the vertical distance from the second end of the first baffle to the bottom surface of the cabinet; the vertical distance from the first end of the second baffle 302 to the bottom surface of the cabinet is greater than or equal to the vertical distance from the end of the fourth smoke exhaust port 222 away from the bottom surface of the cabinet along the height direction of the cabinet to the bottom surface of the cabinet, and is greater than the vertical distance from the second end of the second baffle 302 to the bottom surface of the cabinet; the vertical distance from the second end of the first baffle 301 to the bottom surface of the cabinet is greater than the vertical distance from the second end of the second baffle 302 to the bottom surface of the cabinet.

[0081] Taking Figure 7 as an example, the positioning of the opening and fourth smoke exhaust port 222, the position and tilt of the first baffle 301, and the position and tilt of the second baffle 302 accelerate the directional guidance of gas out of the cabinet and effectively prevent rainwater from intruding into the first cavity 2201 and the first smoke exhaust channel. By configuring the tilt of the first baffle 301 and the second baffle 302, the energy storage cabinet provided in this embodiment of the application can better guide gas out of the cabinet, thereby improving smoke exhaust efficiency.

[0082] In some embodiments, as shown in Figure 7, one end of the fourth smoke exhaust port 222 away from the top surface along the height direction of the cabinet coincides with the first side, and the first side is the side formed by the intersection of the bottom surface of the second smoke exhaust channel and the surface of the second shell body on which the fourth smoke exhaust port 222 is provided; the bottom surface of the second smoke exhaust channel is formed as a slope, and the vertical distance from the first side to the bottom surface of the cabinet body is smaller than the vertical distance from the second side to the bottom surface of the cabinet body, and the second side is the side formed by the intersection of the bottom surface of the second smoke exhaust channel and the surface of the second shell body on which the third smoke exhaust port 221 is provided.

[0083] In some embodiments, as shown in Figure 7, one end of the fourth smoke exhaust port 222 away from the top surface along the height direction of the cabinet coincides with the first side, and the first side is the side formed by the intersection of the bottom surface of the second cavity 2202 and the surface of the second shell on which the fourth smoke exhaust port 222 is provided; the bottom surface of the second cavity 2202 is formed as a slope, and the vertical distance from the first side to the bottom surface of the cabinet is less than the vertical distance from the third side to the bottom surface of the cabinet, and the third side is the side formed by the intersection of the bottom surface of the second cavity 2202 and the partition 300.

[0084] In the embodiment of the present application, by setting the bottom surface of the second smoke exhaust channel or the bottom surface of the second cavity 2202 to be a slope, and the fourth smoke exhaust port 222 is connected to the bottom surface of the second smoke exhaust channel or the bottom surface of the second cavity 2202, rainwater entering from the outside is facilitated to be discharged from the cabinet body in a timely manner from the fourth smoke exhaust port 222 along the slope, thereby reducing the risk of rainwater entering the interior of the smoke exhaust device.

[0085] In some embodiments, the smoke exhaust device 20 further includes a sealing body 23, which surrounds the first smoke exhaust port 212 or the explosion relief valve, and is used to strengthen the sealing connection between the explosion relief valve 11 and the first smoke exhaust port 212. The sealing body 23 can be adhesively fixed to the side of the first shell 21 provided with the first smoke exhaust port or the side of the battery pack 10 provided with the explosion relief valve, so that the sealing body is compressed between the side of the first shell provided with the first smoke exhaust port and the side of the battery pack provided with the explosion relief valve. As one of the application scenarios, after the smoke exhaust device 20 is installed, the battery pack 10 is pushed into the cabinet 110, so that the explosion relief valve 11 of the battery pack 10 is connected to the first smoke exhaust port 212, and the sealing body 23 is compressed between the first shell and the battery pack, which can play a better sealing role.

[0086] In some embodiments, along the height direction of the cabinet 110, the second shell is located in the upper half of the back side 115 of the cabinet, and the distance between the second shell 22 and the top of the cabinet 110 is less than or equal to the first threshold value. For example, the range of the first threshold value is 100-250 mm. Since smoke is generally discharged upward, by setting the second shell to a position close to the top surface of the cabinet, it is more convenient for the gas to be discharged out of the cabinet.

[0087] Figure 9 is a schematic diagram of a fourth smoke exhaust port 222 applicable to the present application. As shown in Figure 9(a), the fourth smoke exhaust port 222 can be an opening. As shown in Figure 9(b), the fourth smoke exhaust port 222 comprises a plurality of fine holes. These holes are dispersed and arranged on a surface of the second housing 22, away from the battery pack, along the width of the cabinet. This provides waterproof protection, better preventing rainwater outside the cabinet from entering the smoke exhaust device.

[0088] In some embodiments, the volume of the second housing along the height direction of the cabinet is positively correlated with the number of first smoke exhaust ports. For example, if the number of first smoke exhaust ports is N, the volume of the second housing is N times the volume required for a single first smoke exhaust port, but the embodiments of the present application are not limited thereto.

[0089] In some embodiments, the outer surface of the second shell having the fourth smoke exhaust port 222 is flush with the outer surface of the cabinet body, which is conducive to uniform size of the energy storage cabinet and more practical, and can also reduce the risk of external rainwater entering the smoke exhaust device.

[0090] In some embodiments, the first housing 21 is formed by connecting a first clamping plate and a second clamping plate. The first clamping plate is located on the side close to the battery pack 10, and the second clamping plate is located on the side close to the cabinet 110. The first and second clamping plates form a first smoke exhaust channel 211. The first housing 21 can also be an integrated structure, which is not specifically limited in this embodiment of the present application.

[0091] In some embodiments, the first shell 21 or the second shell 22 is a cabinet itself, but the embodiments of the present application are not limited thereto.

[0092] In some embodiments, as shown in FIG. 10 , the first shell includes a protruding structure 214 disposed in a through hole on the back surface 115 of the cabinet. A second smoke exhaust port 213 is disposed on a side of the protruding structure 214 facing the back surface 115 .

[0093] In some embodiments, the first shell 21 is fixed to the top surface 111 or the back surface 115 of the cabinet 110 through a connecting part. For example, the first shell 21 is connected to the cabinet 110 by screws, retaining springs, buckles, cable ties and welding, etc., which is not specifically limited in this embodiment of the present application.

[0094] In some embodiments, the battery cluster 120 further includes battery racks, which are arranged along the height direction of the cabinet and are used to place the battery packs 10 .

[0095] In some embodiments, Figures 11 and 12 illustrate a third baffle 400 suitable for use in embodiments of the present application. The third baffle 400 is disposed within the second smoke exhaust duct 220. The third baffle 400 is perpendicular to the first side surface 113 or the second side surface 114 and covers the third smoke exhaust port 221. The first end of the third baffle 400 is movably connected to the second housing 22. The first end of the third baffle 400 is located near the top surface along the height of the cabinet, and the third baffle 400 rotates about the first end.

[0096] It should be understood that when the third baffle 400 rotates, the third baffle 400 forms a first angle with the back surface 115. As shown in FIG11 , when the explosion relief valve 11 is not discharging gas, the third baffle 400 is in a closed state, parallel to the back surface 115, i.e., the angle between the third baffle 400 and the back surface 115 is 0. The third baffle 400 can cover the third smoke exhaust port 221, effectively preventing rainwater from entering the cabinet 110. As shown in FIG12 , when the explosion relief valve 11 is discharging gas, the pressure of the gas discharge can drive the third baffle 400 to rotate about the first end as the axis, and the first angle between the third baffle 400 and the back surface 115 is greater than 0. The gas discharged from the explosion relief valve 11 can be discharged from the gap between the end of the third baffle 400 away from the top surface and the surface of the second shell away from the top surface, and discharged out of the cabinet 110 through the fourth smoke exhaust port 222.

[0097] The embodiment of the present application sets a third baffle in the second smoke exhaust channel and uses the movable connection of the third baffle to prevent rainwater from entering the first smoke exhaust channel when there is no gas discharge from the explosion relief valve. When there is gas discharge from the explosion relief valve, the natural pressure of the gas flow drives the third baffle to rotate, thereby providing a circulation channel for the gas and discharging the gas out of the cabinet.

[0098] In some embodiments, the first angle formed by the third baffle 400 and the back surface is greater than or equal to 0 degrees and less than or equal to 90 degrees, but the embodiments of the present application are not limited thereto.

[0099] In some embodiments, a vertical distance between the first end of the third baffle 400 and a surface of the second housing 22 away from the battery pack along the width direction of the cabinet is greater than or equal to a second threshold. The second threshold is greater than or equal to the length of the third baffle 400 in the cabinet height direction when closed, but the present invention is not limited thereto.

[0100] In some embodiments, the third baffle 400 and the second shell 22 are movably connected via a hinge, or movably connected by partially tightening screws, which is not specifically limited in the embodiments of the present application.

[0101] In some embodiments, as shown in FIG. 4 , a plurality of smoke exhaust devices are arranged along the length direction of the cabinet, and the length direction of the first shell is along the height direction of the cabinet.

[0102] In some embodiments, as shown in FIG13 , a plurality of smoke exhaust devices are arranged along the height direction of the cabinet, and the length direction of the first shell is along the length direction of the cabinet.

[0103] In some embodiments, as shown in FIG13 , the second shell is disposed on a side of the back surface close to the first side surface or the second side surface.

[0104] In some embodiments, as shown in FIG13 , the second shell is respectively disposed on the back side close to the first side and the back side close to the second side, so that the gas can diffuse from both sides of the cabinet.

[0105] In some embodiments, as shown in FIG13 , the distance between the second shell and the first side or the second side is greater than or equal to a fourth threshold value. For example, the fourth threshold value is in the range of 100-250 mm. This embodiment of the present application is not limited thereto.

[0106] An embodiment of the present application further provides an energy storage cabinet with directional smoke exhaust. FIG14 is a partial schematic diagram of an energy storage cabinet with directional smoke exhaust provided by an embodiment of the present application. The energy storage cabinet includes a cabinet body, a battery cluster, and multiple smoke exhaust shells 30.

[0107] The cabinet body includes a top surface and a bottom surface that are arranged oppositely, two side surfaces that are arranged oppositely, and a back surface and a cabinet door that are arranged oppositely; the battery cluster is accommodated in the cabinet body, and the battery cluster includes multiple battery packs stacked along the height direction of the cabinet body, and an explosion relief valve is provided on the surface facing the back of each battery pack.

[0108] As shown in FIG14 , a corresponding smoke exhaust housing 30 is provided for each explosion relief valve 11. Each smoke exhaust housing 30 includes a fifth smoke exhaust port 310. The fifth smoke exhaust port 310 is used to accommodate the explosion relief valve 11 and is sealedly connected to the explosion relief valve 11. A third smoke exhaust channel 313 is formed within the smoke exhaust housing 30 and communicates with the fifth smoke exhaust port 310. The smoke exhaust port of the explosion relief valve 11 is located within the third smoke exhaust channel 313.

[0109] A plurality of through holes are provided on the back of the cabinet. The plurality of through holes penetrates the back, and the plurality of through holes correspond to the plurality of smoke exhaust housings 30 one by one. Each smoke exhaust housing 30 is provided in a corresponding through hole.

[0110] A sixth smoke exhaust port 312 is further provided on a surface of the smoke exhaust housing 30 away from the battery pack in the width direction of the cabinet. The sixth smoke exhaust port 312 is connected to the third smoke exhaust channel 313 and is used to exhaust gas out of the cabinet.

[0111] The energy storage cabinet provided in the embodiment of the present application forms a third smoke exhaust channel 313 through a sealed connection between the explosion relief valve 11 and the fifth smoke exhaust port 310 of the smoke exhaust housing 30. This channel can guide the gas released from the explosion relief valve 11 to flow from the third smoke exhaust channel 313 to the sixth smoke exhaust port 312 and then be discharged out of the cabinet body, thereby effectively addressing the risk of thermal runaway, safely discharging the gas, and improving the safety of the energy storage cabinet.

[0112] In some embodiments, the smoke exhaust housing 30 and the explosion relief valve 11 are fixed by bolts, which is not specifically limited in this embodiment of the present application.

[0113] In some embodiments, the sixth smoke exhaust port 312 is a single opening, or the sixth smoke exhaust port 312 is composed of multiple opening units, wherein the multiple opening units are evenly arranged along the height direction of the cabinet on a surface of the smoke exhaust shell 30 away from the battery pack along the width direction of the cabinet.

[0114] In some embodiments, one end of the sixth smoke exhaust port 312, located away from the top surface along the cabinet height direction, overlaps with the fourth side, which is formed by the intersection of the bottom surface of the third smoke exhaust channel 313 and a surface of the smoke exhaust housing 30 located away from the battery pack along the cabinet width direction. The bottom surface of the third smoke exhaust channel 313 is an inclined surface, and the vertical distance from the fourth side to the cabinet bottom surface is less than the vertical distance from the fifth side to the cabinet bottom surface. The fifth side is formed by the intersection of the bottom surface of the third smoke exhaust channel 313 and the surface of the smoke exhaust housing 30 provided with the fifth smoke exhaust port 310. By providing the inclined bottom surface of the third smoke exhaust channel 313 and the location of the sixth smoke exhaust port 312, rainwater entering the cabinet can be promptly discharged.

[0115] In some embodiments, the structure in the third smoke exhaust channel 313 may also be configured as the structure in the second smoke exhaust channel in FIG. 7 and the aforementioned detailed description, which will not be described in detail here.

[0116] 15 and 16 are schematic diagrams of another energy storage cabinet with directional smoke exhaust provided in an embodiment of the present application.

[0117] The present application provides a first drain port 2101 at the bottom of the first smoke exhaust channel 211, which is connected to the outside of the energy storage cabinet through the guide pipe 500. In this way, under thermal runaway conditions, the high-temperature electrolyte ejected from the battery pack through the explosion relief valve 11 can be discharged to the outside of the energy storage cabinet in a timely manner to avoid the risk of corrosion and combustion caused by electrolyte accumulation.

[0118] In some embodiments, one end of the flow conduit 500 communicates with the first drain port 2101 on the first housing 21, and the other end communicates with the second drain port 1121 on the bottom surface 112 of the energy storage cabinet 100. The second drain port 1121 on the bottom surface 112 includes a through hole, connecting the energy storage cabinet 100 to the outside world. When the battery pack discharges high-temperature electrolyte through the explosion relief valve 11, the electrolyte is sprayed into the first exhaust channel 211 and flows downward along the exhaust channel. It can be directly discharged from the energy storage cabinet through the flow conduit 500 to prevent electrolyte accumulation within the energy storage cabinet.

[0119] The first liquid drain port 2101 is located at the end of the smoke exhaust device 20 closest to the ground along the direction of gravity. The first liquid drain port 2101 is located on the first housing 21, at the end of the first housing 21 closest to the ground along the direction of gravity. The first housing 21 is provided with multiple first smoke exhaust ports 212. Along the height of the cabinet, the vertical distance from the first liquid drain port 2101 to the cabinet bottom 112 is shorter than the vertical distance from the first smoke exhaust port 212 to the cabinet bottom 112.

[0120] It should be understood that the first shell 21 and / or the second shell 22 may be provided with an anti-corrosion coating to extend the service life of the energy storage cabinet.

[0121] In some embodiments, a leakage plate 1122 is provided in the second drain port 1121 to allow the electrolyte to be smoothly discharged from the energy storage cabinet while effectively preventing insects and other debris from entering the smoke exhaust channel through the bottom surface of the cabinet.

[0122] It should be understood that the leakage plate 1122 includes but is not limited to a mesh structure, a grid structure, etc.

[0123] It should be understood that the material of the flow guide tube 500 includes a metal flow guide tube, and this application does not impose any special limitation on this.

[0124] As an example and not a limitation, studs are welded to the first drain port 2101 and the second drain port 1121, and movable nuts are provided on the studs. Threads are provided at both ends of the flow guide tube 500, and the movable nuts are used to tightly connect the ends of the flow guide tube 500 to the first housing 21 and the bottom surface 112 of the cabinet, respectively.

[0125] The energy storage cabinet provided in this application can effectively divert the electrolyte to the outside of the flue in a timely manner during emergency smoke exhaust, ensuring that the electrolyte does not accumulate in the smoke exhaust channel, effectively addressing the risk of thermal runaway, and improving the safety of the energy storage cabinet.

[0126] The present application also provides an energy storage system comprising the aforementioned energy storage cabinet and a power converter. The power converter is configured to convert the voltage output by the battery pack of the energy storage cabinet into power before outputting it to the power grid or an external load, and / or the power converter is configured to convert the voltage output by an external power supply into power before outputting it to the battery pack. The energy storage system can be a charging station, a site backup power supply, a mobile base station power supply, or other energy storage system for scenarios such as home energy storage, industrial and commercial energy storage, and distributed energy storage, without limitation in this application.

[0127] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0128] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0129] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0130] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. Specifically, the thickness, length, width, and other dimensions of various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are for illustrative purposes only and should not constitute any limitation on this application.

[0131] The term "plurality" used in this application refers to two or more (including two).

[0132] In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0133] It should be noted that in the embodiments of the present application, the terms "upper", "lower", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0134] The limitations of symmetry (e.g., axisymmetry or central symmetry) and identity (e.g., same length, same width, etc.) mentioned in the embodiments of this application are based on current technological standards and are not strictly mathematical definitions. A deviation of a predetermined threshold or predetermined angle may exist between the two.

[0135] Specifically, in various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0136] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An energy storage cabinet with directional smoke exhaust, characterized in that, It includes a cabinet body, a battery cluster and a smoke exhaust device. The cabinet body includes a top surface and a bottom surface which are oppositely arranged, two side surfaces which are oppositely arranged, and a back surface and a cabinet door which are oppositely arranged. A through hole penetrating the back surface is provided on the back surface. The battery cluster is accommodated in the cabinet body. The battery cluster includes a plurality of battery packs stacked along the height direction of the cabinet body. An explosion vent valve is provided on the surface of each battery pack facing the back surface. The smoke exhaust device includes a first housing which is arranged between the back surface and the battery pack. A first smoke exhaust passage is formed inside the first housing. A plurality of first smoke exhaust ports are provided on the surface of the first housing facing the battery pack. The plurality of first smoke exhaust ports are all communicated with the first smoke exhaust passage. The plurality of first smoke exhaust ports correspond to the plurality of explosion vent valves one by one. Each first smoke exhaust port is hermetically connected to the corresponding explosion vent valve. A second smoke exhaust port is provided on the surface of the first housing facing the back surface. The second smoke exhaust port is communicated with the first smoke exhaust passage. The smoke exhaust device further includes a second housing. A second smoke exhaust passage is formed inside the second housing. The second housing is arranged in the through hole. A third smoke exhaust port is provided on the surface of the second housing facing the battery pack. The third smoke exhaust port is communicated with the second smoke exhaust passage. The third smoke exhaust port is hermetically connected to the second smoke exhaust port. A fourth smoke exhaust port is provided on one surface of the second housing far away from the battery pack along the width direction of the cabinet body. The fourth smoke exhaust port is communicated with the second smoke exhaust passage.

2. The energy storage cabinet according to claim 1, wherein A partition is arranged in the second smoke exhaust passage. The partition is parallel to the back surface. The partition divides the second smoke exhaust passage into a first cavity and a second cavity. The first cavity is communicated with the first smoke exhaust passage. The second cavity is communicated with the fourth smoke exhaust port. The partition includes an opening. The first cavity and the second cavity are communicated via the opening.

3. The energy storage cabinet according to claim 2, wherein, Along the height direction of the cabinet body, the vertical distance from the end of the opening far away from the top surface to the bottom surface of the cabinet body is greater than the vertical distance from the end of the fourth smoke exhaust port far away from the bottom surface of the cabinet body to the bottom surface of the cabinet body.

4. The energy storage cabinet according to claim 2, wherein The second cavity includes a first baffle. The first end of the first baffle is arranged on the partition. There is a gap between the second end of the first baffle and one surface of the second housing far away from the battery pack along the width direction of the cabinet body. The first end and the second end of the first baffle are the two ends of the first baffle opposite to each other along the width direction of the cabinet body.

5. The energy storage cabinet according to claim 4, characterized in that, The second cavity further includes a second baffle. The first baffle and the second baffle are arranged along the height direction of the cabinet body. The first end of the second baffle is arranged on one surface of the second housing far away from the battery pack along the width direction of the cabinet body. There is a gap between the second end of the second baffle and the partition. The first end and the second end of the second baffle are the two ends of the second baffle opposite to each other along the width direction of the cabinet body.

6. The energy storage cabinet according to claim 5, wherein The vertical distance from the first end of the first baffle to the bottom surface of the cabinet body is less than or equal to the vertical distance from the end of the opening far from the top surface along the height direction of the cabinet body to the bottom surface of the cabinet body, and greater than the vertical distance from the second end of the first baffle to the bottom surface of the cabinet body; The vertical distance from the first end of the second baffle to the bottom surface of the cabinet body is greater than or equal to the vertical distance from the end of the fourth smoke exhaust port far from the bottom surface of the cabinet body along the height direction of the cabinet body to the bottom surface of the cabinet body, and greater than the vertical distance from the second end of the second baffle to the bottom surface of the cabinet body; The vertical distance from the second end of the first baffle to the bottom surface of the cabinet body is greater than the vertical distance from the second end of the second baffle to the bottom surface of the cabinet body.

7. The energy storage cabinet according to claim 1, wherein, The end of the fourth smoke exhaust port far from the top surface along the height direction of the cabinet body coincides with a first side, and the first side is formed by the intersection of the bottom surface of the second smoke exhaust channel and a surface of the second housing far from the battery pack along the width direction of the cabinet body; The bottom surface of the second smoke exhaust channel is an inclined surface, and the vertical distance from the first side to the bottom surface of the cabinet body is less than the vertical distance from a second side to the bottom surface of the cabinet body, and the second side is formed by the intersection of the bottom surface of the second smoke exhaust channel and the surface of the second housing provided with the third smoke exhaust port; 8. The energy storage cabinet according to claim 2, wherein The end of the fourth smoke exhaust port far from the top surface along the height direction of the cabinet body coincides with a first side, and the first side is formed by the intersection of the bottom surface of the second cavity and a surface of the second housing far from the battery pack along the width direction of the cabinet body; The bottom surface of the second cavity is an inclined surface, and the vertical distance from the first side to the bottom surface of the cabinet body is less than the vertical distance from a third side to the bottom surface of the cabinet body, and the third side is formed by the intersection of the bottom surface of the second cavity and the partition; 9. The energy storage cabinet according to claim 1, characterized in that A sealing body is provided at the connection between each first smoke exhaust port and the corresponding explosion vent valve.

10. The energy storage cabinet according to any one of claims 1 to 9, characterized in that, Along the height direction of the cabinet body, the second housing is located in the upper half of the back surface.

11. The energy storage cabinet according to any one of claims 1 to 9, characterized in that, The fourth smoke exhaust port is an opening or composed of a plurality of fine holes, and the plurality of fine holes are dispersedly arranged on a surface of the second housing far from the battery pack along the width direction of the cabinet body.

12. The energy storage cabinet according to any one of claims 1 to 9, characterized in that, A third baffle is arranged in the second smoke exhaust channel, and the third baffle is perpendicular to the side surface of the cabinet body and covers the third smoke exhaust port. The first end of the third baffle is movably connected to the second housing, the first end of the third baffle is the end close to the top surface along the height direction of the cabinet body, and the third baffle rotates around the first end as an axis.

13. The energy storage cabinet according to claim 12, wherein The vertical distance from the first end of the third baffle to a surface of the second housing far from the battery pack along the width direction of the cabinet body is greater than or equal to a second threshold value.

14. The energy storage cabinet according to any one of claims 1 to 9, characterized in that, The energy storage cabinet further includes a diversion pipe, one end of the diversion pipe is communicated with the first smoke exhaust channel through a first liquid discharge port on the first housing, and the other end of the diversion pipe is communicated with the outside of the energy storage cabinet through a second liquid discharge port on the bottom surface; In the height direction of the cabinet body, the vertical distance between the first liquid discharge port and the bottom surface is less than the vertical distance between any one of the first smoke exhaust ports and the bottom surface.

15. The energy storage cabinet according to claim 14, wherein a liquid leakage plate is arranged in the second liquid discharge port, and the liquid leakage plate is of a grid structure.

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