Energy storage cabinet capable of discharging smoke directionally

Abstract

The utility model provides an energy storage cabinet capable of discharging smoke directionally, the energy storage cabinet comprises a cabinet body, a battery cluster and a smoke discharging device, the battery cluster is accommodated in the cabinet body, and the battery cluster comprises a plurality of battery packs stacked in the height direction of the cabinet body; each battery pack comprises an explosion venting valve which is arranged on one surface, parallel to the height of the cabinet body, of the battery pack; a first shell of the smoke exhaust device is installed on the back face of the cabinet body and located between the cabinet body and the explosion venting valve. A first smoke exhaust channel is formed in the first shell, and a first smoke exhaust port of the first shell is correspondingly connected with the explosion venting valve; the smoke exhaust device further comprises a second shell, a second smoke exhaust channel is formed in the second shell, and the second shell is arranged in a through hole penetrating through the back face of the cabinet body. The first shell and the second shell are provided with corresponding openings so as to communicate the first smoke exhaust channel with the second smoke exhaust channel; a fourth smoke outlet is formed in the surface, located outside the cabinet body, of the second shell. According to the energy storage cabinet provided by the embodiment of the invention, directional smoke exhaust in the energy storage cabinet can be realized, and the thermal runaway risk can be effectively dealt with.

Description

[0001] The present application claims priority to the Chinese patent application No. 202420153781.7, filed on January 22, 2024, entitled "A directional smoke exhaust energy storage cabinet", the Chinese patent application No. 202421203739.8, filed on May 29, 2024, entitled "A directional smoke exhaust energy storage cabinet", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the field of new energy technology, and more particularly, to a directional smoke exhaust energy storage cabinet. BACKGROUND

[0003] With the vigorous development of renewable energy, it is necessary to use energy storage devices to alleviate the pressure of grid peak regulation and frequency regulation. Among various energy storage methods, electrochemical energy storage is the most rapidly developing one.

[0004] At present, a known energy storage cabinet includes a cabinet body and a plurality of battery packs (PACK) placed in the cabinet body. Thus, the battery packs can be isolated and protected from the external environment by the cabinet body, improving the safety of the use of the battery packs.

[0005] However, when the temperature uniformity between the batteries is poor or overcharging and discharging occurs, there is a risk of thermal runaway of the battery pack. Under the condition of thermal runaway of the battery cell, a large amount of high-temperature gas will be generated and diffuse in the cabinet, causing a fire and even an explosion and other secondary damage. Such safety accidents are common in recent years.

[0006] How to effectively deal with the above-mentioned thermal runaway risk and improve the safety of the energy storage cabinet has become a problem to be solved at present. CONTENT OF THE INVENTION

[0007] The present application provides a directional smoke exhaust energy storage cabinet, which can effectively deal with the thermal runaway risk 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, the cabinet body comprising a top surface and a bottom surface arranged oppositely, two side surfaces arranged oppositely, and a back surface and a cabinet door arranged oppositely, the back surface being provided with a through hole penetrating through the back surface; the battery cluster is accommodated in the cabinet body, the battery cluster comprising a plurality of battery packs stacked along the height direction of the cabinet body, and each battery pack is provided with a venting valve on the surface facing the back surface; the smoke exhaust device comprises a first shell, which 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 arranged on the surface of the first shell facing the battery pack, the plurality of first smoke exhaust ports are in communication with the first smoke exhaust channel, and the plurality of first smoke exhaust ports correspond to the plurality of venting valves one by one, each first smoke exhaust port is in sealed connection with the corresponding venting valve, and a second smoke exhaust port is arranged on the surface of the first shell facing the back surface, the second smoke exhaust port is in communication with the first smoke exhaust channel; the smoke exhaust device further comprises a second shell, a second smoke exhaust channel is formed inside the second shell, the second shell is arranged in the through hole, a third smoke exhaust port is arranged on the surface of the second shell facing the battery pack, the third smoke exhaust port is in communication with the second smoke exhaust channel, the third smoke exhaust port is in sealed connection with the second smoke exhaust port, and a fourth smoke exhaust port is arranged on the surface of the second shell away from the battery pack along the width direction of the cabinet body, the fourth smoke exhaust port is in communication with the second smoke exhaust channel.

[0009] The energy storage cabinet provided by the embodiments of the present application can guide the gas released from the venting 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 dealing with the risk of thermal runaway, safely discharging the gas, and improving the safety of the energy storage cabinet.

[0010] In one of the implementation manners, a partition plate is arranged in the second smoke exhaust channel, the partition plate is parallel to the back surface, the partition plate divides the second smoke exhaust channel into a first cavity and a second cavity, the first cavity is in communication with the first smoke exhaust channel, and the second cavity is in communication with the fourth smoke exhaust port; the partition plate comprises an opening, and the first cavity and the second cavity are in communication via the opening.

[0011] The energy storage cabinet provided by the embodiments of the present application can guide the gas flow, play a buffering role in the path of the gas flowing out of the cabinet body, and effectively isolate external rainwater, thereby reducing the risk of rainwater invading the first cavity and the first smoke exhaust channel.

[0012] In one implementation, 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 outlet away from the bottom surface of the cabinet to the bottom surface of the cabinet.

[0013] The energy storage cabinet provided by the embodiments of the present application effectively prevents the risk of the first and second smoke channels being wetted by the rainwater entering from the fourth smoke outlet and the opening in sequence by setting the opening position in the height direction of the cabinet to be higher than the position of the fourth smoke outlet.

[0014] In one implementation, the second cavity includes a first baffle, a first end of the first baffle is arranged on the partition plate, and a second end of the first baffle is spaced apart from one surface of the second shell away from the battery pack in the width direction of the cabinet, the first end of the first baffle and the second end of the first baffle are two ends opposite in the width direction of the cabinet.

[0015] The energy storage cabinet provided by the embodiments of the present application can effectively prevent the rainwater from the outside from further invading the first cavity and the first smoke channel by arranging the first baffle in the height direction of the cabinet 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 in the height direction of the cabinet, a first end of the second baffle is arranged on one surface of the second shell away from the battery pack in the width direction of the cabinet, a second end of the second baffle is spaced apart from the partition plate, and the first end of the second baffle and the second end of the second baffle are two ends opposite in the width direction of the cabinet.

[0017] The energy storage cabinet provided by the embodiments of the present application can effectively prevent the rainwater from the outside from further invading the first cavity and the first smoke channel by arranging the second baffle in the height direction of the cabinet in the second cavity.

[0018] In one implementation, a vertical distance from the first end of the first baffle to the bottom surface of the cabinet is less than or equal to a vertical distance from one end of the opening away from the top surface to the bottom surface of the cabinet in the height direction of the cabinet, and greater than a vertical distance from the second end of the first baffle to the bottom surface of the cabinet; a vertical distance from the first end of the second baffle to the bottom surface of the cabinet is greater than or equal to a vertical distance from one end of the fourth smoke outlet away from the bottom surface of the cabinet to the bottom surface of the cabinet in the height direction of the cabinet, and greater than a vertical distance from the second end of the second baffle to the bottom surface of the cabinet; and 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 by the embodiment of the present application can accelerate the discharge of the gas from the cabinet body by setting the inclined directions of the first baffle and the second baffle, and can effectively prevent rainwater from entering the first cavity and the first smoke exhaust channel.

[0020] In one of the implementation manners, the fourth smoke exhaust port coincides with a first edge in a direction away from the top surface of the cabinet body, the first edge being an edge formed by the bottom surface of the second smoke exhaust channel and a surface of the second shell provided with the fourth smoke exhaust port; the bottom surface of the second smoke exhaust channel is an inclined surface, and a vertical distance from the first edge to the bottom surface of the cabinet body is less than a vertical distance from a second edge to the bottom surface of the cabinet body, the second edge being an edge formed by the bottom surface of the second smoke exhaust channel and a surface of the second shell provided with the third smoke exhaust port.

[0021] The energy storage cabinet provided by the embodiment of the present application can facilitate the rainwater from the outside to be discharged from the fourth smoke exhaust port in a timely manner along the inclined surface, and reduce the risk of rainwater entering the interior of the smoke exhaust device.

[0022] In one of the implementation manners, the fourth smoke exhaust port coincides with a first edge in a direction away from the top surface of the cabinet body, the first edge being an edge formed by the bottom surface of the second smoke exhaust channel and a surface of the second shell provided with the fourth smoke exhaust port; the bottom surface of the second smoke exhaust channel is an inclined surface, and a vertical distance from the first edge to the bottom surface of the cabinet body is less than a vertical distance from a second edge to the bottom surface of the cabinet body, the second edge being an edge formed by the bottom surface of the second smoke exhaust channel and a surface of the second shell provided with the third smoke exhaust port.

[0023] The energy storage cabinet provided by the embodiment of the present application can facilitate the rainwater from the outside to be discharged from the fourth smoke exhaust port in a timely manner along the inclined surface, and reduce the risk of rainwater entering the interior of the smoke exhaust device.

[0024] In one of the implementation manners, a sealing body is arranged at the connection between each first smoke exhaust port and the corresponding explosion venting valve.

[0025] The energy storage cabinet provided by the embodiment of the present application can improve the sealing effect by arranging the sealing body between the explosion venting valve and the first smoke exhaust port.

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

[0027] The energy storage cabinet provided in the embodiments of the present application is more convenient for discharging gas outside the cabinet by arranging the second shell at a position close to the top surface of the cabinet.

[0028] In one implementation, the fourth smoke outlet is an opening or is formed by a plurality of holes, and the plurality of holes are arranged on one 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 embodiments of the present application is more convenient for discharging gas outside the cabinet by arranging the second shell at a position close to the top surface of the cabinet.

[0030] In one implementation, the third baffle is arranged in the second smoke passage, the third baffle is perpendicular to the side surface of the cabinet and covers the third smoke outlet, a first end of the third baffle is movably connected to the intersection of one end of the top plate and one surface of the second shell away from the bottom surface of the cabinet, the first end of the third baffle is one end close to the top surface along the height direction of the cabinet, and the third baffle can rotate about the first end as an axis.

[0031] In one implementation, the vertical distance between the first end of the third baffle and the one surface 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 value.

[0032] The embodiments of the present application can block rainwater from entering the first smoke passage when the gas discharge valve does not discharge gas, and can drive the third baffle to swing by the natural pressure of gas flow when the gas discharge valve discharges gas, so as to provide a flow passage for the gas and discharge the gas outside the cabinet.

[0033] In one implementation, the energy storage cabinet further includes a flow guide pipe. One end of the flow guide pipe is in communication with the first smoke passage through the first liquid discharge port on the first shell, and the other end of the flow guide pipe is in communication with the outside of the energy storage cabinet through the second liquid discharge port on the bottom surface. The first liquid discharge port is arranged on the first shell close to the bottom surface along the height direction of the cabinet. The vertical distance between the first liquid discharge port and the bottom surface along the height direction of the cabinet is less than the vertical distance between any one of the first smoke outlets and the bottom surface.

[0034] The application embodiment sets the flow guide pipe, one end of the flow guide pipe is communicated with the lowermost end of the first smoke exhaust channel, and the other end of the flow guide pipe is communicated with the second liquid discharge port of the cabinet bottom surface. In the case of thermal runaway of the battery, the high-temperature electrolyte discharged from the battery pack can be sprayed into the first smoke exhaust channel and flow downward along the smoke exhaust channel, and then flow out of the energy storage cabinet from the liquid discharge port of the cabinet bottom surface through the flow guide pipe, thereby effectively avoiding the cabinet corrosion and combustion risk caused by the accumulation of electrolyte.

[0035] In one implementation, a liquid leakage plate is arranged in the second liquid discharge port.

[0036] The application embodiment sets the liquid leakage plate in the second liquid discharge port of the bottom surface, so that the electrolyte can be smoothly discharged from the cabinet, and at the same time, the sundries such as mosquitoes and the like can be effectively prevented from entering the smoke exhaust channel from the cabinet bottom.

[0037] In a second aspect, an energy storage system is provided, which includes a plurality of energy storage cabinets according to the first aspect and a power converter, the power converter being configured to perform power conversion on the voltage output by the battery pack of the energy storage cabinet and output to an external grid or external load, and / or the power converter being configured to perform power conversion on the voltage output by an external power source and output to the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a schematic diagram of an energy storage cabinet for directional smoke exhaust according to an embodiment of the application.

[0039] Figure 2 is a schematic diagram of a battery cluster suitable for use in an embodiment of the application.

[0040] Figure 3 is a schematic diagram of a battery pack suitable for use in an embodiment of the application.

[0041] Figure 4 is a schematic diagram of a smoke exhaust device suitable for use in an embodiment of the application.

[0042] Figure 5 is a schematic diagram of a first housing suitable for use in an embodiment of the application.

[0043] Figure 6 is a schematic diagram of a smoke exhaust device suitable for use in an embodiment of the application.

[0044] Figure 7 is a schematic diagram of a smoke exhaust device suitable for use in an embodiment of the application.

[0045] Figure 8 is a schematic diagram of a smoke exhaust device suitable for use in an embodiment of the application.

[0046] Figure 9is a schematic diagram of a fourth smoke outlet suitable for the embodiments of the present application.

[0047] Figure 10 is a schematic diagram of a smoke exhaust device suitable for the embodiments of the present application.

[0048] Figure 11 is a schematic diagram of a third baffle suitable for the embodiments of the present application.

[0049] Figure 12 is a schematic diagram of a third baffle suitable for the embodiments of the present application.

[0050] Figure 13 is a schematic diagram of the back of an energy storage cabinet suitable for the embodiments of the present application.

[0051] Figure 14 is a schematic diagram of an energy storage cabinet suitable for the embodiments of the present application.

[0052] Figure 15 is a schematic diagram of another energy storage cabinet suitable for the embodiments of the present application.

[0053] Figure 16 is a schematic diagram of another energy storage cabinet suitable for the embodiments of the present application.

[0054] Reference signs

[0055] 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 liquid discharge port; 1122-liquid leakage plate; 120-battery cluster; 10-battery pack; 11-explosion venting valve; 20-smoke exhaust device; 21-first housing; 211-first smoke exhaust passage; 212-first smoke outlet; 213-second smoke outlet; 22-second housing; 220-second smoke exhaust passage; 221-third smoke outlet; 222-fourth smoke outlet; 2101-first liquid discharge port; 300-baffle; 2201-first cavity; 2202-second cavity; 301-first baffle; 302-second baffle; 23-sealing body; 400-third baffle; 30-smoke exhaust housing; 310-fifth smoke outlet; 312-sixth smoke outlet; 313-third smoke exhaust passage; 214-protruding structure; 500-flow guide pipe. DETAILED DESCRIPTION

[0056] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0057] Figure 1 is a schematic diagram of an energy storage cabinet 100 provided by the embodiments of the present application. As shown in Figure 1As shown, the energy storage cabinet 100 includes a cabinet body 110 and a battery pack 10 arranged in the cabinet body 110.

[0058] As shown, Figure 1 The cabinet body 110 includes a top surface 111, a bottom surface 112 of the cabinet body, a first side surface 113, a second side surface 114, a back surface 115, and an openable and closable cabinet door (not shown).

[0059] A plurality of battery racks 116 are arranged in the cabinet body 110, and the plurality of battery racks 116 are arranged in parallel with the first side surface 113 or the second side surface 114. The plurality of battery racks 116 are used to place the battery pack. That is, one battery pack 10 can be clamped and fixed by two adjacent battery racks 116.

[0060] It should be noted that, in order to facilitate understanding and observation, Figure 1 Only the case of including one battery pack 10 is shown, but the embodiments of the present application are not limited thereto, for example, as shown, Figure 2 A plurality of 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.

[0061] Figure 3 is a schematic view of a battery pack 10 provided by the present application, and each battery pack 10 is provided with a venting valve 11 on the surface facing the back surface 115, and the venting valve 11 is used to release the high-pressure gas inside the battery pack 10.

[0062] In some embodiments, the venting valve 11 of the battery pack 10 can include a pressure sensing device, a valve, and a sealing structure. The pressure sensing device can adopt a spring or a pressure sensor, which is activated when the internal pressure of the battery pack exceeds the safe range. The valve is used to release the overpressure gas generated inside. The sealing structure is used to prevent the leakage of liquid or gas inside the battery pack to avoid short circuit or other safety problems. When abnormal conditions such as overcharge, overdischarge, or battery short circuit occur inside the battery, and the internal pressure of the battery pack 10 exceeds the set threshold, the venting valve 11 will start. After the venting valve 11 starts, it will release the gas accumulated inside the battery, so as 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 venting valve 11 can also take away some heat, thereby helping to reduce the temperature of the battery pack 10 and reducing other dangers caused by local high temperature.

[0063] As shown, Figure 1 and Figure 2 The energy storage cabinet 100 further includes a plurality of smoke exhaust devices 20, and the plurality of smoke exhaust devices 20 are arranged one by one corresponding to the plurality of battery clusters 120.

[0064] Figure 4is a front view schematic diagram of the back 115 of an energy storage cabinet provided by the present application, each smoke exhaust device 20 comprises a first shell 21, the first shell 21 is arranged between the back 115 of the cabinet body 110 and the battery pack 10, one side of the first shell 21 towards the battery pack 10 is provided with a plurality of first smoke exhaust ports 212, the plurality of first smoke exhaust ports 212 correspond to the plurality of explosion venting valves 11 one by one, the explosion venting valve 11 is a convex structure and is embedded in the first smoke exhaust port 212, in order to facilitate observation, Figure 4 The explosion venting valve 11 is not shown.

[0065] Figure 5 is a schematic diagram of the first shell 21 suitable for the present application. As shown in Figure 5 , the inside of the first shell 21 forms a first smoke exhaust channel 211, the first smoke exhaust channel 211 communicates with the plurality of first smoke exhaust ports 212, each first smoke exhaust port is sealingly connected with the corresponding explosion venting valve 11, so that the gas released by the explosion venting valve 11 can enter the first smoke exhaust channel 211 from the first smoke exhaust port 212. One side of the first shell 21 towards the back 115 is provided with a second smoke exhaust port 213, the second smoke exhaust port 213 communicates with the first smoke exhaust channel 211.

[0066] Figure 6 is a schematic diagram of a smoke exhaust device 20 suitable for the present application. Figure 7 is an explosion schematic diagram of a smoke exhaust device 20 suitable for the present application.

[0067] As shown in Figure 6 and Figure 7 , the smoke exhaust device 20 further comprises a second shell 22, the inside of the second shell 22 forms a second smoke exhaust channel 220, the back 115 of the cabinet body is provided with a through hole penetrating the back 115, the second shell 22 is arranged in the through hole of the back 115 of the cabinet body. One side of the second shell 22 towards the battery pack 10 is provided with a third smoke exhaust port 221, the third smoke exhaust port 221 communicates with the second smoke exhaust channel 220, the third smoke exhaust port 221 and the second smoke exhaust port 213 are sealingly connected, so that the first smoke exhaust channel 211 and the second smoke exhaust channel 220 are communicated. One side of the second shell 22 away from the battery pack 10 along the width direction of the cabinet body is provided with a fourth smoke exhaust port 222, the fourth smoke exhaust port 222 communicates with the second smoke exhaust channel 220, the fourth smoke exhaust port 222 is used for exhausting gas out of the cabinet body.

[0068] It should be understood that, except for the first smoke exhaust port and the second smoke exhaust port, the rest of the first shell 21 is sealed; except for the third smoke exhaust port 221 and the fourth smoke exhaust port 222, the rest of the second shell 22 is sealed.

[0069] Figure 8is a cross-sectional view of a smoke exhaust device provided by the present application. For example, when the battery pack is in thermal runaway, the gas released by the explosion vent valve 11 flows into the first smoke exhaust channel 211 through the first smoke exhaust port 212, flows from the first smoke exhaust channel 211 into the second smoke exhaust port, flows from the second smoke exhaust port into the second smoke exhaust channel 220, and is then exhausted out of the cabinet through the fourth smoke exhaust port 222.

[0070] The energy storage cabinet provided by the embodiments of the present application forms the first smoke exhaust channel and the second smoke exhaust channel through the sealed connection between the explosion vent valve and the first smoke exhaust port of the first shell and the sealed connection between the second smoke exhaust port of the first shell and the third smoke exhaust port 221 of the second shell, which can guide the gas released from the explosion vent valve to flow from the first smoke exhaust channel to the second smoke exhaust channel of the smoke exhaust device and then be exhausted out of the cabinet, thereby effectively dealing with the risk of thermal runaway, safely exhausting the gas, and improving the safety of the energy storage cabinet.

[0071] The conventional energy storage cabinet is provided with an exhaust port or a ventilation system in a preset area of the energy storage cabinet. When the exhaust port is arranged in the preset area (for example, the back of the energy storage cabinet), the gas released by the explosion vent valve in the energy storage cabinet is discharged through the prearranged smoke exhaust valve and fan. When the ventilation system is arranged, the ventilation system can exhaust the smoke or gas released by the explosion vent valve in the energy storage cabinet to avoid the spread of the gas in the energy storage cabinet. This process of discharging the gas out of the cabinet by the active action of the device or system is active smoke exhaust, but the active smoke exhaust needs to actively open the valve and other devices, which affects the smoke exhaust efficiency of the energy storage cabinet, and is extremely likely to cause greater risk due to the spread of the smoke in the energy storage cabinet.

[0072] The smoke exhaust device provided by the present application can realize passive smoke exhaust in the energy storage cabinet, that is, the first smoke exhaust channel and the second smoke exhaust channel are used to guide the automatic exhaust of the gas out of the cabinet, no active device is used, the gas in the explosion vent valve is discharged in time after being released, the smoke exhaust efficiency of the energy storage cabinet is improved, the directional smoke exhaust in the energy storage cabinet is realized, the spread of the gas in the energy storage cabinet is avoided, and the safety performance of the energy storage cabinet is improved.

[0073] In some embodiments, in combination with Figure 7 As shown, the second shell includes a partition plate 300 arranged in the second smoke exhaust channel 220, and the partition plate 300 is parallel to the back 115 of the cabinet. The partition plate 300 divides the second smoke exhaust channel 220 into a first cavity 2201 and a second cavity 2202, the first cavity 2201 is in communication with the first smoke exhaust channel 211 and is located on one side of the partition plate 300, and the second cavity 2202 is in communication with the fourth smoke exhaust port 222 and is located on the other side of the partition plate 300. The partition plate 300 includes an opening, and the first cavity 2201 and the second cavity 2202 are in communication through the opening.

[0074] The energy storage cabinet provided by the embodiments of the present application can guide the flow of gas, play a buffering role in the path of the gas flowing out of the cabinet body, and effectively isolate external rainwater and reduce the risk of rainwater entering the first cavity 2201 and the first smoke exhaust passage 211.

[0075] In some embodiments, the vertical distance from the opening to the bottom is greater than the vertical distance from the fourth smoke exhaust port 222 to the bottom. By setting the opening position in the height direction of the cabinet body to be higher than the position of the fourth smoke exhaust port 222, the risk of the first smoke exhaust passage and the second smoke exhaust passage being wetted by the oblique rainwater entering from the fourth smoke exhaust port and the opening in turn is effectively prevented.

[0076] In some embodiments, the baffle 300 can also be a waterproof curtain, such as a plastic film or a polymer material, to prevent water flow from entering the second smoke exhaust passage 220 and the first smoke exhaust passage 211 and keep the smoke exhaust device dry.

[0077] In some embodiments, in combination with Figure 7 and Figure 8 As shown in the figures, the second cavity 2202 includes a first baffle 301, one end of the first baffle 301 is arranged on the baffle 300, and the other end of the first baffle 301 is spaced apart from the face of the second shell where the fourth smoke exhaust port 222 is arranged. One end of a second baffle 302 is arranged on the face of the second shell where the fourth smoke exhaust port 222 is arranged, and the other end of the second baffle 302 is spaced apart from the baffle 300.

[0078] 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 in the height direction of the cabinet body.

[0079] In some embodiments, the second cavity 2202 includes a plurality of first baffles 301 and / or a plurality of second baffles 302, wherein the plurality of first baffles 301 or the plurality of second baffles 302 are arranged in the height direction of the cabinet body, or the plurality of first baffles 301 and the plurality of second baffles 302 are arranged in the height direction of the cabinet body in sequence or staggered.

[0080] The energy storage cabinet provided by the present application can effectively prevent the rainwater entering from the outside from further invading the first cavity 2201 and the first smoke exhaust passage by arranging the first baffle 301 and / or the second baffle 302 arranged in the height direction of the cabinet body in the second cavity 2202.

[0081] In some embodiments, in combination with Figure 7As shown, 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 housing where the fourth smoke exhaust port 222 is located toward the direction away from the opening. 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 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.

[0082] by Figure 7 For example, by setting the positions of the opening and the fourth smoke exhaust port 222, the position and tilt direction of the first baffle 301, and the position and tilt direction of the second baffle 302, the directional discharge of gas from the cabinet is accelerated, and rainwater can be effectively prevented from entering the first cavity 2201 and the first smoke exhaust channel. The energy storage cabinet provided in this embodiment, by setting the tilt directions of the first baffle 301 and the second baffle 302, can better guide gas out of the cabinet and improve smoke exhaust efficiency.

[0083] In some embodiments, combined with Figure 7 As shown, the 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. The first side is the edge formed by the intersection of the bottom surface of the second smoke exhaust channel and the surface of the second shell where the fourth smoke exhaust port 222 is provided. The bottom surface of the second smoke exhaust channel is formed as an inclined surface, and the vertical distance from the first side to the bottom surface of the cabinet is less than the vertical distance from the second side to the bottom surface of the cabinet. The second side is the edge formed by the intersection of the bottom surface of the second smoke exhaust channel and the surface of the second shell where the third smoke exhaust port 221 is provided.

[0084] In some embodiments, combined with Figure 7 As shown, the end of the fourth smoke vent 222 away from the top surface along the height direction of the cabinet coincides with the first side. The first side is the edge formed by the intersection of the bottom surface of the second cavity 2202 and the surface of the second shell where the fourth smoke vent 222 is provided. The bottom surface of the second cavity 2202 is formed as an inclined surface, 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. The third side is the edge formed by the intersection of the bottom surface of the second cavity 2202 and the partition 300.

[0085] The bottom surface of the second smoke exhaust passage or the second cavity 2202 is inclined, and the fourth smoke exhaust port 222 is connected to the bottom surface of the second smoke exhaust passage or the second cavity 2202, which is conducive to the rainwater entering from the outside being discharged from the fourth smoke exhaust port 222 along the inclined surface in a timely manner, and reduces the risk of rainwater entering the interior of the smoke exhaust device.

[0086] In some embodiments, the smoke exhaust device 20 further comprises a sealing body 23, which is arranged around the first smoke exhaust port 212 or the explosion vent, and is used to strengthen the sealing connection between the explosion vent 11 and the first smoke exhaust port 212. The sealing body 23 can be fixedly attached to one side of the first shell 21 provided with the first smoke exhaust port or one side of the battery pack 10 provided with the explosion vent, so that the sealing body is compressed between the one side of the first shell provided with the first smoke exhaust port and the one side of the battery pack provided with the explosion vent. As one of the application scenarios, when the smoke exhaust device 20 is installed, the battery pack 10 is pushed into the cabinet 110, so that the explosion vent 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 effect.

[0087] In some embodiments, along the height direction of the cabinet 110, the second shell is located at the upper half of the back surface 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 a first threshold value, for example, the first threshold value is in the range of 100-250 mm. Since the smoke generally exits upwards, by arranging the second shell to be located close to the top surface of the cabinet, the gas is more convenient to be discharged out of the cabinet.

[0088] Figure 9 is a schematic view of the fourth smoke exhaust port 222 applicable to the present application. In combination with Figure 9 (a) shown, the fourth smoke exhaust port 222 can be an opening, in combination with Figure 9 (b) shown, the fourth smoke exhaust port 222 is composed of a plurality of fine holes, and the plurality of fine holes are dispersedly arranged on one side of the second shell 22 away from the battery pack along the width direction of the cabinet, which can form waterproof protection and better prevent rainwater outside the cabinet from entering the interior of the smoke exhaust device.

[0089] In some embodiments, along the height direction of the cabinet, the volume of the second shell is positively correlated with the number of the first smoke exhaust ports. For example, the number of the first smoke exhaust ports is N, and the volume of the second shell is N times the volume required for a single first smoke exhaust port, but the embodiments of the present application are not limited thereto.

[0090] In some embodiments, the outer surface of the second shell provided with the fourth smoke exhaust port 222 is flush with the outer surface of the cabinet, which is conducive to the size uniformity of the energy storage cabinet and is more practical, and can also reduce the risk of rainwater entering the smoke exhaust device from the outside.

[0091] In some embodiments, the first shell 21 is connected by a first clamping plate and a second clamping plate, the first clamping plate is close to the battery pack 10, the second clamping plate is close to the cabinet 110, and the first clamping plate and the second clamping plate form the first smoke exhaust channel 211. The first shell 21 can also be an integrated structure, and the embodiments of the present application are not limited thereto.

[0092] In some embodiments, the first shell 21 or the second shell 22 is the cabinet itself, but the embodiments of the present application are not limited thereto.

[0093] In some embodiments, in combination with Figure 10 As shown, the first shell includes a protruding structure 214, the protruding structure 214 is arranged in the through hole of the back surface 115 of the cabinet, and one side of the protruding structure 214 facing the back surface 115 is provided with the second smoke exhaust port 213.

[0094] In some embodiments, the first shell 21 is fixed to the top surface 111 or the back surface 115 of the cabinet 110 by a connecting piece, for example, the first shell 21 is connected with the cabinet 110 by means of screws, clamps, buckles, straps and welding, and the embodiments of the present application are not limited thereto.

[0095] In some embodiments, the battery cluster 120 further includes a battery rack arranged along the height direction of the cabinet for placing the battery pack 10.

[0096] In some embodiments, Figure 11 And Figure 12 is a schematic view of the third baffle 400 suitable for the embodiments of the present application. The third baffle 400 is arranged in the second smoke exhaust channel 220, the third baffle 400 is perpendicular to the first side surface 113 or the second side surface 114, and the third baffle 400 can cover the third smoke exhaust port 221. The first end of the third baffle 400 is movably connected with the second shell 22, the first end of the third baffle 400 is close to the top surface in the height direction of the cabinet, and the third baffle 400 rotates around the first end as the axis.

[0097] It should be understood that when the third baffle 400 rotates, the third baffle 400 forms a first included angle with the back surface 115. In combination with Figure 11 As shown, when the gas exhaust valve 11 does not exhaust gas, the third baffle 400 is in a closed state, the third baffle 400 is parallel to the back surface 115, that is, the included 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, and can effectively block the entry of rainwater from the outside of the cabinet 110; in combination with Figure 12As shown, when the gas is discharged from the explosion venting valve 11, the pressure of the gas discharge can drive the third baffle 400 to rotate around the first end as the axis, the first angle between the third baffle 400 and the back surface 115 is greater than 0, and the gas discharged from the explosion venting valve 11 can be discharged from the space 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 then discharged out of the cabinet 110 through the fourth smoke outlet 222.

[0098] In the embodiments of the present application, the third baffle is arranged in the second smoke passage, and the third baffle is movably connected, so that in the case that no gas is discharged from the explosion venting valve, the rainwater can be blocked from entering the first smoke passage, and in the case that gas is discharged from the explosion venting valve, the third baffle is driven to rotate by the natural pressure of the gas flow, thereby providing a passage for the gas to flow and discharging the gas out of the cabinet.

[0099] In some embodiments, the first angle between 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.

[0100] In some embodiments, the vertical distance between the first end of the third baffle 400 and the surface of the second shell 22 away from the battery pack in the width direction of the cabinet is greater than or equal to a second threshold value. The second threshold value is greater than or equal to the length of the third baffle 400 in the height direction of the cabinet in the closed state, but the embodiments of the present application are not limited thereto.

[0101] In some embodiments, the third baffle 400 is movably connected to the second shell 22 by a hinge or an incomplete screwing mode, and the embodiments of the present application are not limited thereto.

[0102] In some embodiments, in combination with Figure 4 As shown, the plurality of smoke outlets are arranged in the length direction of the cabinet, and the length direction of the first shell is in the height direction of the cabinet.

[0103] In some embodiments, in combination with Figure 13 As shown, the plurality of smoke outlets are arranged in the height direction of the cabinet, and the length direction of the first shell is in the length direction of the cabinet.

[0104] In some embodiments, in combination with Figure 13 As shown, the second shell is arranged on one side of the back surface close to the first side or the second side.

[0105] In some embodiments, in combination with Figure 13 As shown, the second shell is arranged on one side of the back surface close to the first side and one side of the back surface close to the second side, so that the gas can diffuse from both sides of the cabinet.

[0106] In some embodiments, in combination with Figure 13As shown, the second shell is greater than or equal to the fourth threshold value from the first side or the second side, for example, the fourth threshold value is in the range of 100-250mm, and the embodiments of the present application are not limited thereto.

[0107] The embodiments of the present application also provide a storage energy cabinet for directional smoke exhaust, Figure 14 is a partial schematic view of a storage energy cabinet for directional smoke exhaust provided by the embodiments of the present application, which comprises a cabinet body, a battery cluster and a plurality of smoke exhaust shells 30.

[0108] The cabinet body comprises oppositely arranged top and bottom surfaces, two oppositely arranged side surfaces, and oppositely arranged back and cabinet doors; 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 each battery pack is provided with a venting valve on the surface facing the back.

[0109] In combination Figure 14 As shown, each venting valve 11 is correspondingly provided with a smoke exhaust shell 30, and each smoke exhaust shell 30 comprises a fifth smoke exhaust port 310 for accommodating the venting valve 11, and the fifth smoke exhaust port 310 is in sealing connection with the venting valve 11. The smoke exhaust shell 30 is internally formed with a third smoke exhaust channel 313 in communication with the fifth smoke exhaust port 310, wherein the smoke exhaust port of the venting valve 11 is located in the third smoke exhaust channel 313.

[0110] The back of the cabinet body is provided with a plurality of through holes penetrating the back, and the plurality of through holes correspond one-to-one to the plurality of smoke exhaust shells 30, and each smoke exhaust shell 30 is arranged in the corresponding through hole.

[0111] The smoke exhaust shell 30 is further provided with a sixth smoke exhaust port 312 on the surface away from the battery pack in the width direction of the cabinet body, the sixth smoke exhaust port 312 is in communication with the third smoke exhaust channel 313, and the sixth smoke exhaust port 312 is used for exhausting gas out of the cabinet body.

[0112] The storage energy cabinet provided by the embodiments of the present application forms the third smoke exhaust channel 313 through the sealing connection between the venting valve 11 and the fifth smoke exhaust port 310 of the smoke exhaust shell 30, which can guide the gas released from the venting valve 11 to flow from the third smoke exhaust channel 313 to the sixth smoke exhaust port 312, and then exhaust out of the cabinet body, thereby effectively dealing with the risk of thermal runaway, safely exhausting the gas, and improving the safety of the storage energy cabinet.

[0113] In some embodiments, the smoke exhaust shell 30 and the venting valve 11 are fixed by bolt connection, and the embodiments of the present application are not limited thereto.

[0114] In some embodiments, the sixth smoke outlet 312 is a single opening, or the sixth smoke outlet 312 is composed of multiple opening units, wherein the multiple opening units are uniformly arranged on one face of the smoke exhaust shell 30 away from the battery pack along the width direction of the cabinet body.

[0115] In some embodiments, the sixth smoke outlet 312 coincides with the fourth edge along the height direction of the cabinet body away from the top end, and the fourth edge is an edge formed by the bottom surface of the third smoke passage 313 and the face of the smoke exhaust shell 30 away from the battery pack along the width direction of the cabinet body; the bottom surface of the third smoke passage 313 is a slope, and the vertical distance from the fourth edge to the bottom surface of the cabinet body is less than the vertical distance from the fifth edge to the bottom surface of the cabinet body, and the fifth edge is an edge formed by the bottom surface of the third smoke passage 313 and the face of the smoke exhaust shell 30 provided with the fifth smoke outlet 310. By setting the bottom surface of the third smoke passage 313 as a slope and the position of the sixth smoke outlet 312, rainwater outside the cabinet body can be discharged in time when it enters.

[0116] In some embodiments, the structure in the third smoke passage 313 can also be provided as Figure 7 and the structure in the second smoke passage in the foregoing detailed description, which is not repeated here.

[0117] Figure 15 and Figure 16 Another schematic diagram of a directional smoke exhaust energy storage cabinet provided by the embodiments of the present application.

[0118] The first liquid outlet 2101 is arranged at the bottom of the first smoke passage 211 in the present application, and is communicated with the cabinet body of the energy storage cabinet through the flow guide pipe 500, so that the high-temperature electrolyte sprayed by the battery pack through the explosion venting valve 11 can be discharged to the outside of the energy storage cabinet in time under the heat runaway working condition, so as to avoid the corrosion and burning risk caused by the accumulation of electrolyte.

[0119] In some embodiments, one end of the flow guide pipe 500 is communicated with the first liquid outlet 2101 on the first shell 21, and the other end is communicated with the second liquid outlet 1121 on the bottom surface 112 of the cabinet body of the energy storage cabinet 100. The second liquid outlet 1121 on the bottom surface 112 of the cabinet body includes a through hole, so that the energy storage cabinet 100 is communicated with the outside. When the battery pack sprays high-temperature electrolyte through the explosion venting valve 11, the electrolyte is sprayed into the first smoke passage 211 and flows downward along the smoke passage, and can be directly discharged from the energy storage cabinet through the flow guide pipe 500, so as to avoid the accumulation of electrolyte in the energy storage cabinet.

[0120] The first liquid outlet 2101 is arranged at one end of the smoke exhaust device 20 close to the ground in the direction of gravity. The first liquid outlet 2101 is arranged on the first shell 21, and the first liquid outlet 2101 is arranged at one end of the first shell 21 close to the ground in the direction of gravity. The first shell 21 is provided with a plurality of first smoke outlets 212, and the vertical distance from the first liquid outlet 2101 to the bottom surface 112 of the cabinet is less than the vertical distance from the first smoke outlet 212 to the bottom surface 112 of the cabinet in the height direction of the cabinet.

[0121] It should be understood that the first shell 21 and / or the second shell 22 can be provided with an anti-corrosion coating to prolong the service life of the energy storage cabinet.

[0122] In some embodiments, a liquid leakage plate 1122 is arranged in the second liquid outlet 1121, which can smoothly discharge the electrolyte from the energy storage cabinet while effectively preventing insects and other impurities from entering the smoke exhaust passage through the bottom surface of the cabinet.

[0123] It should be understood that the liquid leakage plate 1122 includes but is not limited to a mesh structure, a grid structure, etc.

[0124] It should be understood that the material of the flow guide pipe 500 includes a metal flow guide pipe, which is not limited in the present application.

[0125] By way of example but not limitation, studs are welded on the first liquid outlet 2101 and the second liquid outlet 1121, and a movable nut is arranged at the stud. The flow guide pipe 500 is provided with threads at both ends, and the flow guide pipe 500 is connected to the first shell 21 and the bottom surface 112 of the cabinet through the movable nut.

[0126] The energy storage cabinet provided by the present application can effectively guide and discharge the electrolyte outside the flue during the emergency smoke exhaust process, ensure that the electrolyte does not accumulate in the smoke exhaust passage, effectively cope with the risk of thermal runaway, and improve the safety of the energy storage cabinet.

[0127] The present application also provides an energy storage system including the energy storage cabinet and a power converter. The power converter is used to perform power conversion on the voltage output by the battery pack of the energy storage cabinet and output to the power grid or external load, and / or the power converter is used to perform power conversion on the voltage output by the external power supply and output to the battery pack. The energy storage system can be a charging pile, a site standby power supply, a mobile base station power supply, etc., and can also be an energy storage system in the scenarios of household energy storage, industrial and commercial energy storage, distributed energy storage, etc., which is not limited in the present application.

[0128] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms used in the description of the present application are used for illustrative purposes only and are not intended to limit the scope of the application. The summary of the application and its teachings do not purport to be exhaustive or to be limited to a single embodiment, as the specialty of the application and its industrial applicability are best understood by practicing the application. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. All literature and similar materials cited in this application, including but not limited to, patents, patent applications, articles, books, treatises, and the like, are expressly incorporated by reference in their entirety for any purpose.

[0129] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the described embodiments of the application are merely example structures selected for the purposes of explanation and are presented to provide what is believed to be the most useful and readily understood description of procedures, processes, concepts, etc. that can be performed. It is appreciated that those skilled in the art will readily recognize a multitude of variations of the example described herein and will be able to select from these variations the alternative of most practical utility.

[0130] In the description of the application, it is necessary to note that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0131] In the embodiments of the application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. Specifically, the thickness, length, width and other dimensions of various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device, are only exemplary and should not constitute any limitation on the application.

[0132] "Multiple" appearing in the application means more than two (including two).

[0133] In the embodiments of the present application, “at least one” refers to one or more, and “multiple” refers to two or more. “And / or” describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the cases of A alone, A and B together, and B alone. Wherein A, B can be singular or plural. The character “ / ” generally represents an “or” relationship between the front and rear associated objects. “At least one of the following” and the like means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b and c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple.

[0134] It should be noted that in the embodiments of the present application, the terms “upper”, “lower”, “vertical”, “horizontal”, “inner”, “outer” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0135] The symmetry (for example, axis symmetry, or center symmetry, etc.), the same (for example, the same length, the same width, etc.) and the like mentioned in the embodiments of the present application are all for the current process level, and not the absolute strict definition in the mathematical sense. There can be a predetermined threshold or a predetermined angle deviation between them.

[0136] Specifically, in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0137] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A directional smoke exhaust energy storage cabinet, characterized in that, The energy storage cabinet comprises a cabinet body, a battery cluster and a smoke exhaust device, 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, wherein the back surface is provided with a through hole penetrating 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 each battery pack is provided with a venting valve on the surface facing the back surface; The smoke exhaust device comprises a first shell, which is arranged between the back surface and the battery pack; a first smoke exhaust channel is formed inside the first shell, one surface of the first shell facing the battery pack is provided with a plurality of first smoke exhaust ports, the plurality of first smoke exhaust ports are in communication with the first smoke exhaust channel, the plurality of first smoke exhaust ports correspond to the plurality of venting valves one by one, each first smoke exhaust port is in sealing connection with the corresponding venting valve, and one surface of the first shell facing the back surface is provided with a second smoke exhaust port, which is in communication with the first smoke exhaust channel; The smoke exhaust device further comprises a second shell, a second smoke exhaust channel is formed inside the second shell, the second shell is arranged in the through hole, one surface of the second shell facing the battery pack is provided with a third smoke exhaust port, the third smoke exhaust port is in communication with the second smoke exhaust channel, the third smoke exhaust port is in sealing connection with the second smoke exhaust port, and one surface of the second shell away from the battery pack along the width direction of the cabinet body is provided with a fourth smoke exhaust port, which is in communication with the second smoke exhaust channel.

2. The energy storage cabinet of claim 1, wherein, A partition plate is arranged in the second smoke exhaust channel, the partition plate is parallel to the back surface, the partition plate divides the second smoke exhaust channel into a first cavity and a second cavity, the first cavity is in communication with the first smoke exhaust channel, and the second cavity is in communication with the fourth smoke exhaust port; The partition plate comprises an opening, and the first cavity and the second cavity are in communication via the opening.

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

4. The energy storage cabinet of claim 2, wherein, The second cavity comprises a first baffle, The first end of the first baffle is arranged on the partition plate, the second end of the first baffle is spaced apart from one surface of the second shell away from the battery pack along the width direction of the cabinet body, and the first end of the first baffle and the second end of the first baffle are opposite ends of the first baffle in the width direction of the cabinet body.

5. The energy storage cabinet of claim 4, wherein, The second cavity further comprises a second baffle, and 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 shell away from the battery pack along the width direction of the cabinet body, the second end of the second baffle is spaced apart from the partition plate, and the first end of the second baffle and the second end of the second baffle are opposite ends of the second baffle in the width direction of the cabinet body.

6. The energy storage cabinet according to claim 5, wherein A vertical distance from a first end of the first baffle plate to a bottom surface of the cabinet is less than or equal to a vertical distance from one end of the opening away from the top surface in a height direction of the cabinet to the bottom surface of the cabinet, and greater than a vertical distance from a second end of the first baffle plate to the bottom surface of the cabinet; A vertical distance from a first end of the second baffle plate to the bottom surface of the cabinet is greater than or equal to a vertical distance from one end of the fourth smoke outlet away from the bottom surface of the cabinet in the height direction of the cabinet to the bottom surface of the cabinet, and greater than a vertical distance from a second end of the second baffle plate to the bottom surface of the cabinet; The vertical distance from the second end of the first baffle plate to the bottom surface of the cabinet is greater than the vertical distance from the second end of the second baffle plate to the bottom surface of the cabinet.

7. The energy storage cabinet of claim 1, wherein, One end of the fourth smoke outlet away from the top surface in the height direction of the cabinet coincides with a first edge, and the first edge is an edge formed by the bottom surface of the second smoke passage and a surface of the second shell away from the battery pack in a width direction of the cabinet; The bottom surface of the second smoke passage is a slope, and a vertical distance from the first edge to the bottom surface of the cabinet is less than a vertical distance from a second edge to the bottom surface of the cabinet, and the second edge is an edge formed by the bottom surface of the second smoke passage and the surface of the second shell provided with the third smoke outlet.

8. The energy storage cabinet of claim 2, wherein, One end of the fourth smoke outlet away from the top surface in the height direction of the cabinet coincides with a first edge, and the first edge is an edge formed by the bottom surface of the second cavity and a surface of the second shell away from the battery pack in a width direction of the cabinet; The bottom surface of the second cavity is a slope, and a vertical distance from the first edge to the bottom surface of the cabinet is less than a vertical distance from a third edge to the bottom surface of the cabinet, and the third edge is an edge formed by the bottom surface of the second cavity and the baffle plate.

9. The energy storage cabinet of claim 1, wherein, Each of the first smoke outlets is provided with a sealing body at a connection position of the corresponding explosion venting valve.

10. The energy storage cabinet of any one of claims 1 to 9, wherein, In the height direction of the cabinet, the second shell is located in an upper half of the back surface.

11. The energy storage cabinet of any one of claims 1 to 9, wherein, The fourth smoke outlet 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 in the width direction of the cabinet.

12. The energy storage cabinet of any one of claims 1 to 9, wherein, A third baffle plate is arranged in the second smoke passage, the third baffle plate is perpendicular to a side surface of the cabinet and covers the third smoke outlet, A first end of the third baffle plate is movably connected to the second shell, the first end of the third baffle plate is an end close to the top surface in the height direction of the cabinet, and the third baffle plate rotates about the first end as an axis.

13. The energy storage cabinet of claim 12, wherein, A vertical distance from the first end of the third baffle plate to a surface of the second shell away from the battery pack in the width direction of the cabinet is greater than or equal to a second threshold value.

14. The energy storage cabinet of any one of claims 1 to 9, wherein, The energy storage cabinet further comprises a flow guide pipe, one end of the flow guide pipe is in communication with the first smoke passage through a first liquid discharge port on the first shell, and the other end of the flow guide pipe is in communication with the outside of the energy storage cabinet through a second liquid discharge port on the bottom surface; The vertical distance between the first row of liquid outlets and the bottom surface is less than the vertical distance between any of the first row of smoke outlets and the bottom surface along the height direction of the cabinet.

15. The energy storage cabinet according to claim 14, characterized in that, A liquid leakage plate is arranged in the second row of liquid outlets, and the liquid leakage plate is a grid structure.

Images