Energy storage container allowing for directional smoke gas discharging, and energy storage system

Abstract

An energy storage container (100), comprising a battery cluster, a container body (110), and a smoke gas channel (130), wherein the container body (110) comprises a rear wall (112) and a container door, the rear wall (112) and the container door are arranged in parallel, the battery cluster and the smoke gas channel (130) are arranged in the container body (110), a plurality of battery clusters are arranged in parallel, the battery clusters are in one-to-one correspondence with the smoke gas channels (130), and the snoke channel (130) is located between the battery cluster and the rear wall (112). Each smoke gas channel (130) is provided with a plurality of smoke gas inlets (131) and a smoke gas outlet (132). Each battery pack (120) is provided with a boss (123) facing the smoke gas channel (130), the boss (123) passes through a corresponding smoke gas inlet (131), and a sealing member (136) is arranged between the outer wall of the boss (123) in contact with the peripheral edge of the smoke gas inlet (131) and the smoke gas inlet (131). Each boss (123) is of a hollow structure, the boss (123) is in communication with the interior of the corresponding battery pack (120), the surface of each boss (123) located in the smoke gas channel (130) is provided with an opening, and a pressure relief valve (122) is mounted in the opening. When thermal runaway occurs to a battery pack (120) and high-temperature smoke gas is released, the pressure relief valve (122) of the battery pack (120) is opened, the battery pack (120) is in communication with the corresponding smoke gas channel (130) by means of the boss (123) and the pressure relief valves(122), the high-temperature smoke gas is directionally released into the smoke gas channel (130) to prevent thermal runaway spreading to other battery packs (120) or battery clusters, and then the high-temperature smoke gas is discharged to the outside of the container body (110) by means of the smoke gas outlet (132), thereby achieving directional smoke gas discharge of the energy storage container (100).

Description

Energy storage container and energy storage system with directional smoke exhaust

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 15, 2023, with application number 202323427972.2 and application name “A directional smoke exhaust energy storage container and energy storage system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of energy storage safety technology, and in particular to an energy storage container and energy storage system with directional smoke exhaust. Background Art

[0003] Due to the principles and structural characteristics of batteries in electrochemical energy storage systems, a large amount of heat is often generated during repeated use due to internal resistance heating, and this heat will gradually increase. If the accumulated heat is not effectively dissipated, the temperature will further increase. When the temperature reaches the limit, the thermal balance of the battery will be destroyed, triggering a series of self-heating side reactions, producing a large amount of flammable gas, and a "thermal runaway" phenomenon. It may eventually cause internal fire in the battery, and in severe cases, cause an explosion, posing a safety hazard. When a battery abnormally experiences thermal runaway, a large amount of flammable gas and high-temperature smoke are generated. Therefore, how to quickly discharge the flammable gas and high-temperature smoke inside the energy storage system into the box to prevent the box from exploding has become an urgent problem that needs to be solved.

[0004] Summary of the Invention

[0005] In view of the above-mentioned deficiencies of the existing technology, the present invention proposes a directional smoke exhaust energy storage device. When the battery thermal runaway produces gas, the smoke is discharged in a direction to the flue and directly discharged out of the cabinet through the flue, avoiding the accumulation of smoke in the cabinet and causing combustion or explosion accidents.

[0006] In a first aspect, the present application provides an energy storage container with directional smoke exhaust, the energy storage container comprising at least one battery cluster, a box body, and at least one flue, the box body comprising a rear wall and a box door, the rear wall and the box door being arranged in parallel, the at least one battery cluster and the at least one flue being arranged within the box body, the multiple battery clusters being arranged in parallel, the at least one battery cluster and the at least one flue corresponding one to one, the at least one flue being located between the at least one battery cluster and the rear wall. Each of the at least one flue is provided with multiple smoke inlets and exhaust ports, the exhaust ports being in communication with the external environment of the energy storage container; each of the at least one battery cluster comprises multiple battery packs, the multiple battery packs being stacked, each flue extending along the stacking direction of the multiple battery packs, the outer wall of each of the multiple battery packs being provided with a boss facing the flue, the boss passing through the smoke inlet, and a seal being provided between the outer wall where the boss contacts the periphery of the smoke inlet and the smoke inlet. The boss is a hollow structure that communicates with the interior of the battery pack. One side of the boss located within the flue is provided with an opening, which is equipped with a pressure relief valve. When a battery pack within a battery cluster experiences thermal runaway, it releases high-temperature flue gas, causing a sharp increase in pressure within the pack. At this point, the pressure relief valve in the battery pack opens, connecting the battery pack to the corresponding flue through the boss and the pressure relief valve. The high-temperature flue gas is then released into the flue through the pressure relief valve, preventing thermal runaway from spreading to other battery packs or clusters. The flue gas is then discharged to the exterior of the container through the exhaust port, achieving directional exhaust for the energy storage container.

[0007] In one possible implementation, the flue is provided with a vent, which is in communication with the external environment, and the position of the vent on the flue is lower than the position of the smoke exhaust port. When the energy storage container is in normal working mode, the vent and the smoke exhaust port can serve as the vent and exhaust port of the flue, so that the energy storage container can exchange gas with the external environment and maintain the air pressure balance inside the flue. When the energy storage container is in a thermal runaway state, the vent can also serve as the smoke exhaust port of the flue. When the battery pack experiences thermal runaway, high-temperature smoke will be released. The smoke with higher density can be discharged from the vent located below, and the smoke with lower density can be discharged from the smoke exhaust port located above, thereby diverting the smoke and quickly discharging the gas.

[0008] In one possible implementation, a first fan is provided at the smoke exhaust port, and / or a second fan is provided at the ventilation port, so as to increase the gas flow rate in the ventilation port and the smoke exhaust port and accelerate the gas exchange between the energy storage container and the external environment.

[0009] In one possible implementation, the flue includes side walls, the multiple smoke inlets are provided on the side walls, the side walls are arranged parallel to the rear wall, the box body includes a top wall and a bottom wall, the rear wall is connected between the top and bottom walls, and the ends of the side walls, which are arranged opposite each other along the spacing direction between the top and bottom walls, are respectively connected to the top and bottom walls of the box body. This design allows the flue to reuse the rear wall of the energy storage container, eliminating the need to connect the smoke outlet of the flue with the exhaust outlet on the side wall of the box body through dedicated pipes, saving installation time during the energy storage container installation process and improving the efficiency of flue installation.

[0010] In a possible implementation, the smoke exhaust port is provided on the rear wall, or the smoke exhaust port is provided on the top wall. The smoke exhaust port can be flexibly designed, thereby improving the flexibility of the flue design.

[0011] In a possible implementation, the vent is provided on the rear wall, or the vent is provided on the bottom wall. The vent can be flexibly designed, thereby improving the flexibility of the flue design.

[0012] In one possible implementation, each flue includes two parallel side walls, one of which is positioned opposite the battery cluster and the other is positioned between the side walls and the rear wall. The multiple smoke inlets are provided on one of the side walls. The flue is independent of the housing, allowing for flexible design based on the housing's structural design, improving the flue's adaptability.

[0013] In one possible implementation, the other side wall is provided with the smoke exhaust port, the rear wall of the box body is provided with an exhaust port, and the exhaust port is connected to the smoke exhaust port; or the top wall of the flue is provided with the smoke exhaust port, the top wall of the box body is provided with an exhaust port, and the exhaust port is connected to the smoke exhaust port. The smoke exhaust port can be flexibly designed, thereby improving the flexibility of the flue design.

[0014] In one possible implementation, the other side wall is provided with the vent, the rear wall of the box is provided with a vent, and the vent is connected to the vent; or the bottom wall of the flue is provided with the vent, the bottom wall of the box is provided with a vent, and the vent is connected to the vent. The vent can be flexibly designed, thereby improving the flexibility of the flue design.

[0015] In a second aspect, the present application provides an energy storage system, comprising the energy storage container and a power converter described in the first aspect above, wherein the power converter is used to convert the AC power output by an external AC power supply into DC power and output it to the energy storage container, and / or the power converter is used to convert the DC power output by the energy storage container into AC power and output it to a load or a power grid.

[0016] In a third aspect, the present application provides an energy storage container, comprising at least one battery cluster, a box body, and at least one flue, wherein the box body comprises a rear wall and a box door, wherein the rear wall and the box door are arranged in parallel, wherein the at least one battery cluster and the at least one flue are arranged in the box body, wherein the multiple battery clusters are arranged in parallel, wherein the at least one battery cluster and the at least one flue correspond one to one, and wherein the at least one flue is located between the at least one battery cluster and the rear wall. Each of the at least one flue is provided with a plurality of smoke inlets and exhaust ports, and the smoke exhaust ports are connected to the external environment of the energy storage container. Each of the multiple battery clusters comprises a plurality of battery packs, wherein the multiple battery packs are stacked, and a pressure relief valve is provided on the outer wall of each of the multiple battery packs, and the pressure relief valve of each battery pack is arranged toward the flue. Each of the multiple flues extends along the stacking direction of the multiple battery packs. Each flue is provided with multiple smoke inlets and smoke exhaust ports. The smoke exhaust ports are connected to the external environment of the energy storage container. The multiple smoke inlets correspond to the multiple battery packs one-to-one. A seal is provided between the pressure relief valve of each battery pack and the corresponding smoke inlet. The opening at one end of the seal covers the pressure relief valve of each battery pack, and the other end of the seal covers the corresponding smoke inlet. When a battery pack in a battery cluster experiences thermal runaway, the battery pack will release high-temperature smoke, and the pressure inside the battery pack will rise sharply. At this time, the pressure relief valve of the battery pack opens, and the battery pack is connected to the corresponding flue through the pressure relief valve. The high-temperature smoke is released into the flue in a directionally manner through the pressure relief valve to prevent thermal runaway from spreading to other battery packs or battery clusters. The smoke is then discharged to the outside of the box through the smoke exhaust port, thereby realizing directional smoke exhaust of the energy storage container.

[0017] In one possible implementation, the outer wall of each battery pack is arranged opposite to the corresponding side wall of the flue, and the outer wall of each battery pack is provided with a groove, and the side wall of the flue is provided with a groove. A seal is provided between the outer wall of each battery pack and the side wall of the flue, and the two ends of the seal along the arrangement direction of the outer wall and the side wall are respectively located in the groove of the outer wall of the battery pack and the groove of the side wall of the flue. Through the design of the seal and the groove, a sealing structure can be formed between the outer wall of the battery pack and the first side wall. When the battery pack experiences thermal runaway, the pressure relief valve of the battery pack opens, and the high-temperature flue gas inside the battery pack is released into the enclosed space, and then released into the flue through the smoke inlet of the first side wall, and then released into the external environment through the smoke exhaust port of the second side wall, thereby realizing directional smoke exhaust of the energy storage container.

[0018] In one possible implementation, the flue is provided with multiple sub-flue ducts, all of which are connected to the flue, extending perpendicularly to the flue, corresponding one-to-one with the battery packs, and provided with the smoke inlet. With this design, the battery pack's pressure relief valve can be located on either the top or bottom wall, providing a wider range of battery pack models for energy storage containers and expanding the flue's application scenarios.

[0019] In one possible implementation, the smoke inlets of the multiple sub-flue ducts are provided with spring components, and each battery pack is provided with an interface, and the spring component is plugged into the interface of the corresponding battery pack. When the battery pack is installed to the designated position of the energy storage container, the interface of the battery pack and the spring component at the smoke inlet of the sub-flue duct are automatically plugged into each other, automatically forming a sealing structure, thereby improving the installation efficiency of the battery pack. When the battery pack experiences thermal runaway, the pressure relief valve of the battery pack opens, and the high-temperature flue gas inside the battery pack is released into the enclosed space, and then released into the sub-flue duct through the smoke inlet of the lower side wall of the flue, and then released to the external environment through the smoke exhaust port of the flue, thereby realizing directional smoke exhaust of the energy storage container.

[0020] In a fourth aspect, the present application provides an energy storage system, which includes the energy storage container and the power converter described in the first aspect above, wherein the power converter is used to convert the AC power output by an external AC power supply into DC power and output it to the energy storage container, and / or the power converter is used to convert the DC power output by the energy storage container into AC power and output it to a load or a power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of an application scenario of an energy storage container provided in one embodiment of the present application;

[0022] FIG2 is a schematic top view of a first cross-sectional view of an energy storage container provided in this application;

[0023] FIG3 is a side cross-sectional schematic diagram of a first type of energy storage container provided by the present application;

[0024] FIG4 is a second side cross-sectional schematic diagram of the energy storage container provided in this application;

[0025] FIG5 is a third side cross-sectional schematic diagram of the energy storage container provided in this application;

[0026] FIG6 is a fourth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0027] FIG7 is a fifth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0028] FIG8 is a sixth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0029] FIG9 is a seventh side cross-sectional schematic diagram of the energy storage container provided in this application;

[0030] FIG10 is a side cross-sectional schematic diagram of an eighth type of energy storage container provided by the present application;

[0031] FIG11 is a ninth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0032] FIG12 is a tenth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0033] FIG13 is a second schematic top view cross-sectional diagram of the energy storage container provided in this application.

[0034] Reference numerals:

[0035] 100-Energy storage container; 200-Photovoltaic panel; 300-DC / DC converter; 400-Inverter; 500-Grid; 600-Load;

[0036] 110 - box body; 1101 - exhaust port; 1102 - vent; 112 - rear wall; 113 - top wall; 114 - bottom wall

[0037] 120 - battery pack; 121 - battery; 122 - pressure relief valve; 123 - boss; 124 - first groove; 125 - interface;

[0038] 130 - flue; 1301 - first side wall; 1302 - second side wall; 131 - smoke inlet; 131 - spring component; 132 - smoke exhaust port; 133 - vent; 134 - first fan; 135 - second fan; 136 - seal; 137 - second groove; 139 - sub-flue. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments set forth herein. The same figure marks in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all explained with reference to the accompanying drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of this application. The drawings in the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0040] In the embodiments of this application, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0041] It should be noted that the following description sets forth specific details to facilitate understanding of the present application. However, the present application can be implemented in a variety of other ways than those described herein, and those skilled in the art may make similar generalizations without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0042] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0043] And / or: It is just a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0044] Multiple: refers to two or more than two.

[0045] Connected: This refers to an electrical connection. The connection between two electrical components can be direct or indirect. For example, the connection between A and B can be either direct or indirect through one or more other electrical components. For example, A and B can be connected directly, or A and C can be directly connected, C can be directly connected to B, and A and B can be connected through C.

[0046] The following embodiments of the present application provide an energy storage container, which can be used in energy storage application scenarios of photovoltaic power generation.

[0047] For example, Figure 1 illustrates a schematic diagram of the framework structure of a photovoltaic system. As shown in Figure 1, the photovoltaic system includes photovoltaic panels 200, a DC / DC converter 300, an energy storage container 100, and a DC / AC converter 400. The photovoltaic panels 200 are used to convert solar energy into DC power. The DC / DC converter 300 is used to convert the DC power generated by the photovoltaic panels 200 into adjustable DC power (i.e., the DC power output by the photovoltaic panels 200 is converted from DC to DC to output DC power with adjustable voltage and current). This is used to dynamically control the DC power generated by the photovoltaic panels 200, balance the output power of each photovoltaic panel 200, and then output it to the energy storage container 100 for storage. The DC power output by the energy storage container 300 is converted into AC power by the DC / AC converter 400 and output to the power grid 500. The AC power output by the DC / AC converter can also be used to power a load 600. The load 600 can be an electrical device in an industrial park.

[0048] An energy storage container generally includes multiple battery clusters, which include multiple battery packs, which include multiple batteries. In actual applications, batteries may experience thermal runaway during operation due to mechanical, electrical, thermal abuse, and their own defects. During thermal runaway, the battery will generate a large amount of flammable gas, which has a high risk of explosion. The shock wave, thermal radiation, and flying debris caused by the disintegration of the cabinet will pose a threat to the safety of nearby people or objects. There is a risk of thermal runaway valve opening. The flammable gases such as H2 and CO released when the valve is opened may cause an explosion accident in the relatively closed environment inside the cabinet when they encounter sparks or high-temperature surfaces, causing damage to the surrounding environment or people. In order to solve the problem of thermal runaway of energy storage containers, the present application provides an energy storage container 100. When thermal runaway occurs inside the energy storage container 100, the energy storage container 100 can achieve directional smoke exhaust, and promptly discharge the internal high-temperature smoke and flammable gas from the energy storage container to prevent the high-temperature smoke and flammable gas from accumulating inside the energy storage container, causing a sharp increase in air pressure inside the box and an explosion.

[0049] The schematic diagram of the energy storage container 100 provided in the embodiment of the present application can be referred to Figures 2 and 3. Figure 2 is a cross-sectional view of the energy storage container 100 from a top view, and Figure 3 is a cross-sectional view of the energy storage container 100 from a side view. The energy storage container 100 includes at least one battery cluster, a housing 110, and at least one flue 130. The housing 130 includes a rear wall 112 and a door (not shown in the figure). The rear wall 112 and the door are arranged opposite and parallel to each other. The at least one battery cluster and the at least one flue 130 are arranged in the housing. The multiple battery clusters are arranged in parallel, and the at least one battery cluster corresponds to the at least one flue one-to-one. The at least one flue 130 is located between the at least one battery cluster and the rear wall 112. Each flue 130 is provided with multiple smoke inlets 131 and smoke outlets 132. The smoke outlets 132 are connected to the external environment of the energy storage container 100. Each battery cluster includes multiple battery packs 120, and the battery packs 120 include multiple batteries 121. Multiple battery packs 120 are stacked from bottom to top, and each flue 130 extends along the stacking direction of the multiple battery packs 120. The outer wall of each battery pack 120 is provided with a boss 123 facing the flue 130. The boss 123 passes through the smoke inlet 131. One end of the boss 123 is connected to the outer wall of the battery pack 120, and the other end of the boss 123 passes through the smoke inlet 131 of the flue 130, so that the pressure relief valve 122 is located within the flue 130. To ensure the sealing effect between the boss 123 and the smoke inlet 131, a seal 136 is provided between the outer wall of the boss 123 that contacts the periphery of the smoke inlet 131 and the smoke inlet. The boss 123 is a hollow structure and is connected to the interior of the battery pack 120. The side of the boss 123 located within the flue 130 is provided with an opening, and the pressure relief valve 122 is installed in the opening. The interior of the battery pack 120 is connected to the flue 130 through the boss 123 and the pressure relief valve 122. When the battery pack 120 has thermal runaway, the pressure relief valve 122 opens, and the high-temperature flue gas inside the battery pack 120 is first released into the hollow structure of the boss 123, and then released into the flue 130 through the pressure relief valve 122. For example, the high-temperature flue gas and combustible gas generated when the battery 1201 has thermal runaway are discharged into the flue 130 through the pressure relief valve 122, and then discharged to the external environment through the exhaust port 132 of the flue 130. The direction of gas flow is shown by the arrow direction in Figure 3. Discharging the high-temperature flue gas generated by the battery pack 120 into the flue 130 can quickly reduce the air pressure inside the battery pack 120 and prevent explosion. Moreover, since the battery packs 120 and the smoke inlets 131 are arranged in a one-to-one correspondence, the high-temperature flue gas generated by thermal runaway of a battery pack 120 can be directed into the corresponding smoke inlet 131, which can prevent the high-temperature flue gas released by the battery pack 120 from spreading within the same battery cluster, thereby preventing the thermal runaway from spreading to other battery packs 120.Furthermore, since each battery cluster corresponds to a flue 130, when a battery pack 120 inside a battery cluster experiences thermal runaway, the battery pack 120 experiencing thermal runaway can quickly discharge high-temperature flue gas into the flue 130 to prevent the thermal runaway from spreading to other battery clusters, thereby causing thermal runaway of the entire energy storage container 100 and resulting in explosion or fire.

[0050] Generally speaking, maintenance personnel or installers usually work in front of the door of the energy storage container 100. When the flue 130 is provided at the rear wall 112 of the energy storage container 100, the smoke exhaust port 132 can be provided on the side wall of the flue 130 opposite to the rear wall 112 of the energy storage container 100. In addition, the rear wall 112 of the energy storage container 100 is provided with a vent 1102 at a position corresponding to the smoke exhaust port 132. The vent 1102 on the rear wall 112 is connected to the smoke exhaust port 132 of the flue 130, so that the gas inside the flue 130 is discharged into the external environment through the smoke exhaust port 132 and the vent 1102. Providing the vent 1102 on the rear wall 112 of the energy storage container 100 can prevent the gas released from the flue 130 and the vent 1102 from impacting people around and causing safety accidents.

[0051] A base is provided at the bottom of the energy storage container 100 , which can serve as a basic support for the energy storage container 100 and improve the stability of the overall structure of the energy storage container 100 .

[0052] It should be noted that the shape of the flue 130 is not limited, and the flue 130 can be a cylindrical tubular structure or a square tubular structure.

[0053] It should be noted that the shape and number of the above-mentioned smoke exhaust port 132 and smoke inlet 131 are also not limited. For example, the smoke exhaust port 132 and the smoke inlet 131 can be of any shape, which can be, but not limited to, regular shapes such as circular or square, or some possible irregular shapes. The number of smoke exhaust ports 132 can be one or more. The shape of the smoke inlet 131 matches the shape of the boss 123. For example, when the smoke inlet 131 is circular, the boss 123 can be cylindrical, and when the shape of the smoke inlet 131 is square, the boss 123 is cubic. The seal 136 can be arranged on the outer peripheral wall of the boss 123 to enhance the sealing between the boss 123 and the smoke inlet 131.

[0054] The embodiment of the present application does not specifically limit the type of pressure relief valve 122. For example, the pressure relief valve 122 can be a metal or plastic explosion-proof disc with notches as an explosion-proof element. When a certain pressure is reached, the explosion-proof disc ruptures to release pressure. The pressure relief valve 122 can also be a waterproof and breathable pressure relief valve 122. A waterproof and breathable membrane is provided inside the pressure relief valve 122. When the battery pack 120 is in a normal working state, the gas inside the battery pack 120 exchanges gas with the outside world through the pressure relief valve 122 to maintain the air pressure balance inside the battery pack 120. The waterproof and breathable membrane can prevent dust and water droplets from entering the battery pack 120. When thermal runaway occurs inside the battery pack 120, causing the air pressure inside the battery pack 120 to be too high, the pressure relief valve 122 is in an open state, quickly discharging the gas inside the battery pack 120, thereby playing an explosion-proof role. The pressure relief valve 122 may also be a spring-loaded pressure relief valve 122 , comprising a valve body, an elastic component, and a protective cover. When the air pressure inside the battery pack 120 rises sharply, the elastic component pushes open the protective cover, and the pressure relief valve 122 opens to achieve rapid pressure relief.

[0055] The pressure relief valve 122 has the function of positive pressure oxygen barrier. On the one hand, the pressure relief valve 122 can prevent external oxygen from entering the battery pack 120 . On the other hand, the gas inside the battery pack 120 can exchange gas with the outside through the pressure relief valve 122 .

[0056] In order to ensure the smoke exhaust effect, the sum of the areas of the smoke exhaust port 132 and the smoke inlet 131 should be greater than or equal to the area through which gas can flow after the pressure relief valve 122 of the battery pack 120 is opened, so as to avoid the accumulation of high-temperature smoke and combustible gas inside the battery pack 120 or inside the flue 130, thereby causing an explosion.

[0057] To prevent flue gas from harming the surrounding environment or people, a cooling device can be installed in the flue 130 to cool and condense the high-temperature flue gas and combustible gases, thereby reducing the content and effect of combustibles in the flue gas. For example, the condensing device can be a cooling net, cooling plate, evaporator, etc. The cooling device can be installed at the flue 130's smoke inlet 131.

[0058] The emissions emitted when the battery pack 120 is in thermal runaway contain a large amount of liquid or solid combustible particles, such as droplets of electrolyte. Therefore, a filtering device can be provided in the flue 130 to further reduce the content and effect of combustibles in the flue gas. For example, the filtering device can be an adsorption cotton layer, an activated carbon layer, a molecular sieve, a cyclone separator, etc., which can directly filter the liquid combustible particles or solid combustible particles in the flue gas through the adsorption cotton layer, the activated carbon layer, the molecular sieve, the cyclone separator, etc. to reduce the combustibles in the flue gas. The filtering device can be provided at the smoke inlet 131 of the flue 130, or can be provided on one side of the condensing device.

[0059] Furthermore, in order to reduce the concentration of combustible gases such as hydrogen, carbon monoxide, methane and various alkanes in the high-temperature flue gas, a dilution device can be provided in the flue 130 to dilute the combustible gas. For example, the concentration of the combustible gas can be diluted by injecting a non-combustible gas into the flue 130, or by subjecting the combustible gas to a chemical reaction to convert it into a clean gas, such as water vapor or carbon dioxide, thereby reducing the concentration of the combustible gas. Therefore, the dilution device can be a non-combustible gas storage component, which releases the non-combustible gas into the flue 130 when thermal runaway occurs inside the energy storage container 100 to quickly dilute the concentration of the combustible gas in the flue 130. In addition, the dilution device can also be a porous structure with an oxidant and a catalyst attached, such as a metal mesh, metal wool or foam. Similarly, the catalyst can be a precious metal catalyst, such as palladium, platinum or rhodium, and the oxidant can be copper oxide, sodium peroxide or potassium permanganate. The dilution device can be used to oxidize and reduce combustibles in the exhaust to form incombustible substances, such as catalyzing the reaction of hydrogen and carbon monoxide in the flue gas into incombustible water and carbon dioxide. The dilution device can be provided at the exhaust port 132.

[0060] To ensure pressure balance within the flue 130, the flue 130 is further provided with a vent 133. The position and structure of the vent 133 are shown in FIG3 . The vent 133 communicates with the external environment of the energy storage container 100. The location of the vent 133 on the flue 130 is lower than the location of the smoke exhaust port 132. For example, the air inlet vent 133 and the smoke exhaust port 132 of the flue 130 can be respectively provided at opposite ends along the rear wall 112 of the energy storage container 100 in the height direction of the energy storage container 100, for example, the air inlet vent is located below the smoke exhaust port 132. Due to the provision of the vent 133, the high-temperature gas generated by the battery pack 120 is prevented from being discharged into the flue 130, which would cause a sharp drop in the internal air pressure of the flue 130 and deformation of the flue 130. At the same time, the high-temperature gas generated by the battery pack 120 can be quickly discharged to the external environment, reducing the risk of combustion and explosion of the battery pack 120. In addition, when the energy storage container 100 is exhausting smoke, smoke with higher density can be discharged from the ventilation port 133 located at the bottom, and smoke with lower density can be discharged from the exhaust port 132 located at the top, thereby diverting the smoke and quickly exhausting the gas.

[0061] Furthermore, in order to improve the smoke exhaust efficiency of the smoke duct 130 , a first fan 134 may be provided at the smoke exhaust port 133 . Similarly, a second fan 135 may also be provided at the ventilation port 133 .

[0062] When the flue 130 and the housing are independent components, the flue 130 includes a first side wall 1301, a second side wall 1302, a top wall 1303, and a bottom wall 1304. The first side wall 1301 and the second side wall 1302 are disposed opposite each other, with the first side wall 1301 being disposed opposite the battery cluster. The second side wall 1302 is located between the first side wall 1301 and the rear wall 112. The first side wall 1301 is provided with a plurality of smoke inlets 131. Smoke exhaust ports 132 are provided on the second side wall 1302. The rear wall 112 of the housing 110 is provided with exhaust ports 1101, which communicate with the smoke exhaust ports 132. A schematic diagram of the structure can be seen in FIG3. Alternatively, the top wall 1303 of the flue 130 is provided with smoke exhaust ports 132, and the top wall 113 of the housing 110 is provided with exhaust ports 1101, which communicate with the smoke exhaust ports 132. The structure can be seen in FIG4 or FIG5. The exhaust port 1101 and the smoke exhaust port 132 may be directly arranged opposite to each other, or the exhaust port 1101 and the smoke exhaust port 132 may be connected via an air duct.

[0063] It should be understood that when the smoke exhaust port 132 is provided on the top wall of the flue 130 , a rain cover may be provided at the smoke exhaust port 132 to prevent rainwater from entering the flue 130 and further from entering the battery.

[0064] Similarly, the vent 133 can be positioned in a variety of ways. The second side wall 1302 is provided with a vent 133, and the rear wall 112 of the housing 110 is provided with a vent 1102, with the vent 1102 communicating with the vent 133. Alternatively, the vent 133 can be located on the bottom wall 1304 of the flue, with the bottom wall 114 of the housing 110 provided with a vent 1102, with the vent 1102 communicating with the vent 133. The structure is shown in FIG5 . The vent 1102 and vent 133 can be positioned directly opposite each other, or they can be connected via an air duct. When there is a gap between the bottom wall 1304 of the flue and the bottom wall of the box body 110, the vent 133 is arranged on the bottom wall 1304 of the flue, and the vent 1102 can be arranged on the rear wall 112 connected between the bottom wall 1304 of the flue and the bottom wall of the box body 110, and the vent 1102 and the vent 133 are connected through an air duct.

[0065] When the flue 130 reuses the rear wall 112 of the energy storage container 100, that is, when the rear wall of the energy storage container 100 and the second side wall 1302 are combined into one, the flue 130 includes a first side wall 1301, and multiple smoke inlets 131 are provided on the first side wall 1301. The first side wall 1301 is arranged parallel to the rear wall 112. The box body 110 includes a top wall 113 and a bottom wall 114. The rear wall 112 is connected between the top wall 113 and the bottom wall 114. The first side wall 1301 is respectively connected to the top wall 113 and the bottom wall 114 of the box body 110 at two opposite ends arranged along the spacing direction between the top wall 113 and the bottom wall 114 (that is, the height direction of the energy storage container 100). The flue 130 and the box body 110 are an integrally formed structure, which can effectively simplify the structure of the energy storage system. Its structure can be shown in Figures 6 and 7. In this case, the sidewalls of the housing 110 serve as the sidewalls of the flue 130, with its smoke exhaust port 132 disposed directly on the sidewalls of the housing 110. The smoke exhaust port 132 of the flue 130 can also serve as the vent 1102 of the housing 110. This solution avoids the need to connect the smoke exhaust port 132 to the vent 1102 and eliminates the need to seal the flue 130 with the housing 110. This effectively simplifies the assembly process of the energy storage system, reduces the number of components required for the energy storage container 100, and reduces the risk of smoke escaping into the housing 110.

[0066] The smoke exhaust port 132 and ventilation port 133 of the flue 130 in the energy storage container 100 provided in the embodiments of the present application have multiple design options for their locations. The smoke exhaust port 132 can be located on the rear wall 112 of the container 110, as shown in FIG6 . Alternatively, the smoke exhaust port 110 can be located on the top wall 113, as shown in FIG7 . Similarly, the ventilation port 133 can be located on the rear wall 112 of the container 110, as shown in FIG3 . Alternatively, the ventilation port 133 can be located on the bottom wall 114 of the container 110, as shown in FIG7 .

[0067] Based on the same inventive concept, embodiments of the present application further provide an energy storage system, comprising the aforementioned energy storage container 100 and a power converter. The power converter is configured to convert AC power outputted by an external AC power source into DC power for output to the energy storage container 100, and / or the power converter is configured to convert DC power outputted by the energy storage container 100 into AC power for output to a load or a power grid. The architecture of the energy storage system is shown in FIG1 .

[0068] The present application also provides an energy storage container 100, which includes at least one battery cluster, a housing 110, and at least one flue 130. The housing 110 includes a rear wall 112 and a door, which are arranged in parallel. The at least one battery cluster and the at least one flue 130 are disposed within the housing 110. The battery clusters are arranged in parallel, with the at least one battery cluster corresponding to the at least one flue 130. The at least one flue 130 is located between the at least one battery cluster and the rear wall 112. Each of the at least one flue 130 is provided with a plurality of smoke inlets 131 and a smoke exhaust outlet 132, which communicate with the external environment of the energy storage container 100. Each of the plurality of battery clusters includes a plurality of battery packs 120, which are stacked. A pressure relief valve 122 is provided on the outer wall of each of the plurality of battery packs 120, and the pressure relief valve 122 of each battery pack 120 is disposed toward the flue 130. Each of the multiple flues 130 extends along the stacking direction of the multiple battery packs 120. Each flue 130 is provided with multiple smoke inlets 131 and smoke exhaust ports 132. The smoke exhaust ports 132 are connected to the external environment of the energy storage container 100. The multiple smoke inlets 131 correspond one-to-one to the multiple battery packs 120. A seal 136 is provided between the pressure relief valve 122 of each battery pack 120 and the corresponding smoke inlet 131. The opening at one end of the seal 136 covers the pressure relief valve 122 of each battery pack 120, and the other end of the seal 136 covers the corresponding smoke inlet 131.

[0069] Its structure is shown in FIG8 . A seal 136 is provided around the periphery of each smoke inlet 131 of the flue 130 . The seal 136 can be fixed to the first sidewall 1301 of the flue 130 or to the outer wall of the battery pack 120 . The seal 136 , the first sidewall 1301 , and the outer wall of the battery pack 120 form a sealed space, within which the pressure relief valve 122 on the outer wall of the battery pack 120 is located. When installing the battery pack 120 into the energy storage container 100 through the door, a tool is typically used to push the battery pack 120 into the energy storage container 100 along the x-direction in FIG3 . Because the seal 136 is elastic and compressible, under the pressure of the battery pack 120 , the seal 136 presses against the first sidewall 1301 . This compression of the seal 136 seals the connection between the battery pack 120 and the flue 130 , preventing smoke from escaping into the container 110 . With this design, when a battery pack 120 experiences thermal runaway, its pressure relief valve 122 opens, releasing the high-temperature flue gas inside the battery pack 120 into the enclosed space. The gas is then released into the flue 130 through the smoke inlet 131 on the first sidewall 1301, and then released into the external environment through the smoke outlet 132 on the second sidewall 1302, achieving directional smoke exhaust for the energy storage container 100. The battery packs 120 and smoke inlets 131 are arranged in a one-to-one correspondence, allowing the high-temperature flue gas generated by thermal runaway from a particular battery pack 120 to be directed into the corresponding smoke inlet 131. This prevents the high-temperature flue gas released by a battery pack 120 from spreading within the same battery cluster, thereby preventing the thermal runaway from spreading to other battery packs 120. Furthermore, since each battery cluster corresponds to a flue 130, when a battery pack 120 inside a battery cluster experiences thermal runaway, the battery pack 120 experiencing thermal runaway can quickly discharge high-temperature flue gas into the flue 130 to prevent the thermal runaway from spreading to other battery clusters, thereby causing thermal runaway of the entire energy storage container 100 and resulting in explosion or fire.

[0070] It should be understood that, in order to ensure air pressure balance within the flue 130, the flue 130 is further provided with a vent 133, which communicates with the external environment of the energy storage container 100. The vent 133 on the flue 130 is located lower than the smoke exhaust port 132. For example, the air inlet vent 133 and the smoke exhaust port 132 of the flue 130 can be respectively disposed at opposite ends along the rear wall 112 of the energy storage container 100 in the height direction of the energy storage container 100, for example, the air inlet vent is located below the smoke exhaust port 132.

[0071] Similarly, the flue 130 in the embodiment of the present application can reuse the rear wall 112 of the box body 110 , and its structure can be shown in FIG. 8 . The smoke exhaust port 132 and the ventilation port 133 can be set on the rear wall 112 of the box body 110 .

[0072] The flue 130 and the housing 110 can also be independent components. The flue 130 includes a first side wall 1301, a second side wall 1302, a top wall 1303, and a bottom wall 1304. The first side wall 1301 and the second side wall 1302 are disposed opposite each other, with the first side wall 1301 being disposed opposite the battery cluster. The second side wall 1302 is located between the first side wall 1301 and the rear wall 112. The first side wall 1301 is provided with a plurality of smoke inlets 131. Smoke exhaust ports 132 are provided on the second side wall 1302. The rear wall 112 of the housing 110 is provided with exhaust ports 1101, which communicate with the smoke exhaust ports 132. For a schematic structural diagram, see FIG9 . Alternatively, the smoke exhaust ports 132 can be provided on the top wall 1303 of the flue 130, and the exhaust ports 1101 can be provided on the top wall 113 of the housing 110, which communicate with the smoke exhaust ports 132.

[0073] 9 , the second side wall 1302 is provided with a vent 133, the rear wall 112 of the box body 110 is provided with a vent 1102, and the vent 1102 is communicated with the vent 133, or the vent 133 is provided on the bottom wall 1304 of the flue, the bottom wall 114 of the box body 110 is provided with a vent 1102, and the vent 1102 is communicated with the vent 133.

[0074] It is understandable that in a possible example of the present application, the first sealing member 136 is a sealing strip, and the sealing member 136 can be fixed to the flue 130 by bonding or other means to improve the reliability of the connection between the sealing member 136 and the flue 130 .

[0075] Alternatively, the seal 136 can be secured by providing grooves on the sidewalls 1301 of the battery pack 120 and the flue 130, and snapping the ends of the seal 136 into the grooves. The outer wall of each battery pack 120 is positioned opposite the corresponding sidewall of the flue 130. Each outer wall of the battery pack 120 is provided with a groove, and the sidewall of the flue 130 is provided with a groove. The ends of the seal 136 are located in the grooves of the outer wall of the battery pack 120 and the sidewall of the flue 130, respectively.

[0076] The structure of the energy storage container 100 can be seen with reference to the side-view cross-sectional view of the energy storage container 100 shown in FIG10 . To ensure that the gas released by the pressure relief valve 122 is discharged in a directionally directed manner into the flue 130 , a first groove 124 is defined on the outer wall of each battery pack 120, and a second groove 137 is defined on the first sidewall 1301 of the flue 130. The first groove 124 and the second groove 137 can be disposed opposite each other. A seal 136 is disposed between the outer wall of each battery pack 120 and the first sidewall 1301 of the flue 130. One end of the seal 136 is engaged with the first groove 124, and the other end of the seal 136 is engaged with the second groove 137. The seal 136, the first sidewall 1301, and the outer wall of the battery pack 120 form a sealed space, within which the pressure relief valve 122 is located. With this design, when the battery pack 120 experiences thermal runaway, the pressure relief valve 122 of the battery pack 120 opens, and the high-temperature flue gas inside the battery pack 120 is released into the enclosed space, and then released into the flue 130 through the smoke inlet 131 of the first side wall 1301, and then released into the external environment through the smoke exhaust port 132 of the second side wall 1302, thereby realizing directional smoke exhaust of the energy storage container 100.

[0077] In another example, the structure of the energy storage container 100 can be illustrated with reference to the side cross-sectional view of the energy storage container 100 shown in FIG11 . The flue 130 is provided with a plurality of sub-flues 139 . Each of the sub-flues 139 is connected to the flue 130 . The extension direction of the sub-flues 139 is perpendicular to the extension direction of the flue 130 . The sub-flues 139 correspond one-to-one with the battery packs 120 . In this case, the pressure relief valves 122 of the battery packs 120 are provided on the upper outer wall of the battery packs 120 . The sub-flues 139 include lower sidewalls that are disposed opposite the pressure relief valves 122 of the battery packs 120 . The lower sidewalls of the sub-flues 139 are provided with smoke inlets 131 . The sub-flues 139 are disposed opposite the pressure relief valves 122 of the battery packs 120 . When thermal runaway occurs in the battery pack 120, the pressure relief valve 122 opens, and the high-temperature flue gas inside the battery pack 120 is first released into the sub-flue 139 and then released into the flue 130, to prevent the flue gas from spreading between battery clusters and causing thermal runaway to spread to other battery packs 120 or other battery clusters.

[0078] Similarly, referring to Figure 11, a seal 136 is provided between the lower side wall of the sub-flue 139 and the upper outer wall of the battery pack 120. The seal 136, the lower side wall of the sub-flue 139, and the upper outer wall of the battery pack 120 form a sealed space, and the pressure relief valve 122 on the outer wall of the battery pack 120 is located in the enclosed space. With this design, when the battery pack 120 experiences thermal runaway, the pressure relief valve 122 of the battery pack 120 opens, and the high-temperature flue gas inside the battery pack 120 is released into the enclosed space, and then released into the flue 130 through the smoke inlet 131 of the first side wall 1301, and then released to the external environment through the smoke exhaust port 132 of the second side wall 1302, thereby realizing directional smoke exhaust of the energy storage container 100.

[0079] In another example, the structure of the energy storage container 100 can be illustrated with reference to the side cross-sectional view of the energy storage container 100 shown in FIG12 . The smoke inlets 131 of the multiple sub-flues 139 are equipped with spring-loaded ports, and each battery pack 120 is equipped with an interface 125. The spring-loaded ports mate with the interfaces 125 of the corresponding battery packs 120. When the battery packs 120 are installed in corresponding positions within the energy storage container 100, the spring-loaded ports automatically mate with the interfaces 125 on the outer walls of the corresponding battery packs 120, forming a sealed space between the lower sidewall of the flue 130 and the outer wall of the battery packs 120. The pressure relief valves 122 on the outer walls of the battery packs 120 are located within the sealed space. When thermal runaway occurs in the battery pack 120, the pressure relief valve 122 of the battery pack 120 opens, and the high-temperature flue gas inside the battery pack 120 is released into the enclosed space, and then released into the sub-flue 139 through the smoke inlet 131 on the lower side wall of the flue 130, and then released into the external environment through the smoke exhaust port 132 of the flue 130, thereby realizing directional smoke exhaust of the energy storage container 100.

[0080] In another example, the structure of the energy storage container 100 can be illustrated with reference to the cross-sectional view of the energy storage container 100 in a top view shown in FIG13 . The smoke exhaust ports 132 of the flue 130 located on the left and right sides of the energy storage container 100 can also be respectively disposed toward the left and right walls of the energy storage container 100. Accordingly, the exhaust ports 1102 of the energy storage container 100 can be disposed on the left and right walls of the body 110 of the energy storage container 100. In other words, the smoke inlet 131 and the smoke exhaust port 132 of the flue 130 located on the left and right sides of the container can be respectively located on two mutually perpendicular side walls of the flue 130.

[0081] Based on the same inventive concept, embodiments of the present application further provide an energy storage system, comprising the aforementioned energy storage container 100 and a power converter. The power converter is configured to convert AC power outputted by an external AC power source into DC power for output to the energy storage container 100, and / or the power converter is configured to convert DC power outputted by the energy storage container 100 into AC power for output to a load or a power grid. The architecture of the energy storage system is shown in FIG1 .

[0082] The above are only specific embodiments of the present application, but the scope of protection of this 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. A directional smoke exhaust energy storage container, characterized in that: The energy storage container comprises at least one battery cluster, a box body and at least one flue, the box body comprises a rear wall and a box door, the rear wall and the box door are arranged in parallel, the at least one battery cluster and the at least one flue are arranged in the box body, the multiple battery clusters are arranged in parallel, the at least one battery cluster and the at least one flue correspond one to one, and the at least one flue is located between the at least one battery cluster and the rear wall; Each of the at least one flue is provided with a plurality of smoke inlets and smoke exhaust ports, and the smoke exhaust ports are in communication with the external environment of the energy storage container; Each of the at least one battery cluster comprises a plurality of battery packs, the plurality of battery packs are stacked, each of the flues extends along the stacking direction of the plurality of battery packs, an outer wall of each of the plurality of battery packs is provided with a boss facing the flue, the boss passes through the smoke inlet, and a seal is provided between the outer wall where the boss contacts the periphery of the smoke inlet and the smoke inlet; The boss is a hollow structure, the boss is connected to the interior of the battery pack, and an opening is provided on one side of the boss located in the flue, and a pressure relief valve is installed on the opening.

2. The energy storage container according to claim 1, characterized in that: The flue is provided with a vent, which is communicated with the external environment, and the location of the vent on the flue is lower than the location of the smoke exhaust port.

3. The energy storage container according to claim 2, characterized in that: The smoke exhaust port is provided with a first fan, and / or the ventilation port is provided with a second fan.

4. The energy storage container according to claim 2 or 3, characterized in that: The flue comprises a side wall, the plurality of smoke inlets are arranged on the side wall, and the side wall is arranged parallel to the rear wall; The box body comprises a top wall and a bottom wall, the rear wall is connected between the top wall and the bottom wall, and two ends of the side wall which are arranged opposite to each other along the spacing direction of the top wall and the bottom wall are respectively connected to the top wall of the box body and the bottom wall of the box body.

5. The energy storage container according to claim 4, characterized in that: The smoke exhaust port is arranged on the rear wall, or the smoke exhaust port is arranged on the top wall.

6. The energy storage container according to claim 4 or 5, characterized in that: The vent is arranged on the rear wall, or the vent is arranged on the bottom wall.

7. The energy storage container according to claim 2 or 3, characterized in that: The flue comprises two parallel side walls, one of which is arranged opposite to the battery cluster, and the other is located between the one of the side walls and the rear wall, and the multiple smoke inlets are arranged on the one of the side walls.

8. The energy storage container according to claim 7, characterized in that: The other side wall is provided with the smoke exhaust port, the rear wall of the box body is provided with an exhaust port, and the exhaust port is connected to the smoke exhaust port, or the top wall of the flue is provided with the smoke exhaust port, the top wall of the box body is provided with an exhaust port, and the exhaust port is connected to the smoke exhaust port.

9. The energy storage container according to claim 7, characterized in that: The other side wall is provided with the vent, the rear wall of the box body is provided with the vent, and the vent is connected to the vent, or the bottom wall of the flue is provided with the vent, the bottom wall of the box body is provided with the vent, and the vent is connected to the vent.

10. An energy storage system, characterized in that: The energy storage system comprises the energy storage container and the power converter as described in any one of claims 1 to 9 above, wherein the power converter is used to convert the AC power output by an external AC power source into DC power and output it to the energy storage container, and / or the power converter is used to convert the DC power output by the energy storage container into AC power and output it to a load or a power grid.

11. An energy storage container with directional smoke exhaust, characterized in that: The energy storage container comprises at least one battery cluster, a box body and at least one flue, the box body comprises a rear wall and a box door, the rear wall and the box door are arranged in parallel, the at least one battery cluster and the at least one flue are arranged in the box body, the multiple battery clusters are arranged in parallel, the at least one battery cluster and the at least one flue correspond one to one, and the at least one flue is located between the at least one battery cluster and the rear wall; Each of the at least one flue is provided with a plurality of smoke inlets and smoke exhaust ports, and the smoke exhaust ports are in communication with the external environment of the energy storage container; Each of the plurality of battery clusters comprises a plurality of battery packs, the plurality of battery packs are stacked, a pressure relief valve is arranged on the outer wall of each of the plurality of battery packs, and the pressure relief valve of each battery pack is arranged toward the flue; Each of the multiple smoke ducts extends along the stacking direction of the multiple battery packs, and each smoke duct is provided with multiple smoke inlets and smoke exhaust ports. The smoke exhaust ports are connected to the external environment of the energy storage container, and the multiple smoke inlets correspond to the multiple battery packs one by one. A seal is provided between the pressure relief valve of each battery pack and the corresponding smoke inlet, and an opening at one end of the seal covers the pressure relief valve of each battery pack, and the other end of the seal covers the corresponding smoke inlet.

12. The energy storage container according to claim 11, characterized in that: The outer wall of each battery pack is arranged opposite to the corresponding side wall of the flue, the outer wall of each battery pack is provided with a groove, the side wall of the flue is provided with a groove, and the two ends of the seal are respectively located in the groove of the outer wall of the battery pack and the groove of the side wall of the flue.

13. The energy storage container according to claim 11, characterized in that: Each of the flues is provided with a plurality of sub-flue ducts, and the plurality of sub-flue ducts are all connected to the flue, and the extension direction of the plurality of sub-flue ducts is perpendicular to the extension direction of the flue, and the plurality of sub-flue ducts correspond one-to-one to the plurality of battery packs, and the plurality of sub-flue ducts are provided with the smoke inlet, and the pressure relief valve of each battery pack is arranged toward the smoke inlet.

14. The energy storage container according to claim 13, characterized in that: The smoke inlets of the multiple sub-flueways are provided with spring components, and each battery pack is provided with an interface, and the spring component is plugged into the interface of the corresponding battery pack.

15. An energy storage system, characterized in that: The energy storage system comprises the energy storage container and the power converter as described in any one of claims 11 to 14 above, wherein the power converter is used to convert the AC power output by an external AC power source into DC power and output it to the energy storage container, and / or the power converter is used to convert the DC power output by the energy storage container into AC power and output it to a load or a power grid.

Images