Energy storage container and energy storage system capable of discharging smoke directionally

Abstract

The energy storage container comprises battery clusters, a container body and flues, the container body comprises a rear wall and a container door, the rear wall and the container door are arranged in parallel, the battery clusters and the flues are arranged in the container body, the multiple battery clusters are arranged in parallel and correspond to the flues in a one-to-one mode, and the flues are located between the battery clusters and the rear wall. The flue is provided with a plurality of smoke inlets and smoke outlets. The battery pack is provided with a boss facing the flue, the boss penetrates through the smoke inlet, and a sealing piece is arranged between the outer wall, making contact with the periphery of the smoke inlet, of the boss and the smoke inlet. The boss is of a hollow structure and is communicated with the interior of the battery pack, an opening is formed in the face, located in the flue, of the boss, and a pressure relief valve is installed at the opening. When the battery pack is subjected to thermal runaway and high-temperature flue gas is released, the pressure release valve of the battery pack is opened, the battery pack is communicated with the corresponding flue through the boss and the pressure release valve, and the high-temperature flue gas is directionally released into the flue, so that the thermal runaway is prevented from spreading to other battery packs or battery clusters and then being discharged to the outside of the box body through the smoke outlet; and directional smoke exhaust of the energy storage container is achieved.

Description

Technical Field

[0001] The present application relates to the field of energy storage safety technology, and in particular to an energy storage container and an energy storage system with directional smoke exhaust. Background Art

[0002] Due to the principles and structural characteristics of the battery in the electrochemical energy storage system, a large amount of heat is often generated due to internal resistance during repeated use, and the heat will gradually increase. If the accumulated heat is not effectively dissipated, the temperature will rise further. 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 causing "thermal runaway", which may eventually cause fire inside the battery, and in severe cases, cause an explosion, posing a safety hazard. When the battery abnormally experiences thermal runaway, a large amount of flammable gas and high-temperature flue gas are generated. Therefore, how to quickly discharge the flammable gas and high-temperature flue gas inside the energy storage system into the box to prevent the box from exploding has become an urgent problem to be solved. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the present invention proposes a directional smoke exhaust energy storage device. When the battery produces gas due to thermal runaway, the smoke is discharged into the flue in a directional manner and directly discharged out of the cabinet through the flue to avoid smoke accumulation in the cabinet and cause combustion or explosion accidents.

[0004] In the 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 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 to each other, and the at least one flue is located between the at least one battery cluster and the rear wall. Each flue in the at least one flue is provided with a plurality of smoke inlets and exhaust ports, the exhaust ports are connected to the external environment of the energy storage container; each battery cluster in the at least one battery cluster comprises a plurality of battery packs, the plurality of battery packs are stacked, each flue extends along the stacking direction of the plurality of battery packs, the outer wall of each battery pack in 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 inside 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. When a battery pack in a battery cluster has thermal runaway, the battery pack will release high-temperature smoke, and the pressure inside the battery pack will increase sharply. At this time, the pressure relief valve of the battery pack is opened, and the battery pack is connected to the corresponding flue through the boss and the pressure relief valve. The high-temperature smoke is released into the flue in a directional manner through the pressure relief valve to prevent thermal runaway from spreading to other battery packs or battery clusters, and then discharged to the outside of the box through the exhaust port, realizing directional smoke exhaust of the energy storage container.

[0005] In a possible implementation, the flue is provided with a vent, the vent is connected to 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 be used as the vent and the 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 be used as the smoke exhaust port of the flue. When the battery pack has 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, so that the smoke is diverted and the gas is quickly discharged.

[0006] In a 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 speed up the gas flow rate at the ventilation port and the smoke exhaust port and speed up the gas exchange between the energy storage container and the external environment.

[0007] In a possible implementation, the flue includes a side wall, the multiple smoke inlets are arranged on the side wall, the side wall is 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 wall and the bottom wall, and the two ends of the side wall that 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. With this design, the flue can reuse the rear wall of the energy storage container, and there is no need to use a special pipe to connect the smoke outlet of the flue and the exhaust outlet on the side wall of the box body, which saves the installation procedure of the energy storage container and improves the installation efficiency of the flue.

[0008] In a possible implementation, the smoke exhaust port is disposed on the rear wall, or the smoke exhaust port is disposed on the top wall. The smoke exhaust port can be flexibly designed, which improves the flexibility of the smoke duct design.

[0009] 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, which improves the flexibility of the flue design.

[0010] In a possible implementation, each flue comprises two side walls, wherein the flue comprises two parallel side walls, one of which is arranged opposite to the battery cluster, and the other side wall is located between the one of the side walls and the rear wall, and the one of the side walls is provided with the multiple smoke inlets. The flue and the box body are independent structures, so that the flue can be flexibly designed according to the structural design of the box body, thereby improving the flexibility and applicability of the flue.

[0011] In a 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, which improves the flexibility of the flue design.

[0012] In a 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, which improves the flexibility of flue design.

[0013] In a second aspect, the present application provides an energy storage system, which includes 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.

[0014] In a third aspect, the present application provides an energy storage container, 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 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 exhaust ports, and the 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, 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, and 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, 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 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 the thermal runaway from spreading to other battery packs or battery clusters, and then discharged to the outside of the box through the smoke exhaust port, thereby realizing the directional smoke exhaust of the energy storage container.

[0015] In a possible implementation, 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, 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 has 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 to the flue through the smoke inlet of the first side wall, and then released to the external environment through the smoke exhaust port of the second side wall, so as to realize the directional smoke exhaust of the energy storage container.

[0016] In a possible implementation, the flue is provided with a plurality of sub-flues, the plurality of sub-flues are all connected to the flue, the extension direction of the plurality of sub-flues is perpendicular to the extension direction of the flue, the plurality of sub-flues correspond to the plurality of battery packs one by one, and the plurality of sub-flues are provided with the smoke inlet. With such a design, the pressure relief valve of the battery pack can be located on the top wall or the bottom wall of the battery pack, providing more battery pack model options for the energy storage container and enriching the scene application of the flue.

[0017] 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, and a sealing structure is automatically formed, thereby improving the installation efficiency of the battery pack. When thermal runaway occurs in the battery pack, 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.

[0018] In a fourth 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of an application scenario of an energy storage container provided in one embodiment of the present application;

[0020] Figure 2 A first top-view cross-sectional schematic diagram of an energy storage container provided in this application;

[0021] Figure 3 A first side cross-sectional schematic diagram of an energy storage container provided in this application;

[0022] Figure 4 A second side cross-sectional schematic diagram of the energy storage container provided in this application;

[0023] Figure 5 A third side cross-sectional schematic diagram of the energy storage container provided in this application;

[0024] Figure 6 A fourth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0025] Figure 7A fifth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0026] Figure 8 A sixth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0027] Fig. 9 A seventh side cross-sectional schematic diagram of the energy storage container provided in this application;

[0028] Fig.10 An eighth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0029] Fig.11 A ninth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0030] Fig.12 A tenth side cross-sectional schematic diagram of the energy storage container provided in this application;

[0031] Fig.13 This is a second top-view cross-sectional schematic diagram of the energy storage container provided in this application.

[0032] Reference numerals:

[0033] 100- energy storage container; 200- photovoltaic panel; 300- DC / DC converter; 400- inverter; 500- grid; 600- load;

[0034] 110-box; 1101-exhaust port; 1102-vent; 112-rear wall; 113-top wall; 114-bottom wall

[0035] 120 - battery pack; 121 - battery; 122 - pressure relief valve; 123 - boss; 124 - first groove; 125 - interface;

[0036] 130- flue; 1301- first side wall; 1302- second side wall; 131- smoke inlet; 131- spring component; 132- smoke outlet; 133- vent; 134- first fan; 135- second fan; 136- seal; 137- second groove; 139- sub- flue. DETAILED DESCRIPTION

[0037] 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 in conjunction with the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as being limited to the embodiments described herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. The words expressing position and direction described in the embodiments of the present application are all illustrated by taking the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings of the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0038] In the embodiments of the present application, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0039] It should be noted that specific details are described in the following description to facilitate understanding of the present application. However, the present application can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific implementation methods disclosed below.

[0040] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0041] And / or: It is just a way to describe the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0042] Multiple: refers to two or more than two.

[0043] Connection: refers to electrical connection. The connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, A and B are connected, which can be either A and B directly connected or A and B indirectly connected through one or more other electrical components. For example, A and B are connected, or A and C are directly connected, C and B are directly connected, and A and B are connected through C.

[0044] 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.

[0045] For example, Figure 1 A schematic diagram of the framework structure of a photovoltaic system is shown in FIG. Figure 1As shown, the photovoltaic system includes a photovoltaic panel 200, a DC / DC converter 300, an energy storage container 100, and a DC / AC converter 400. The photovoltaic panel 200 is used to convert solar energy into DC power, and the DC / DC converter 300 is used to convert the DC power generated by the photovoltaic panel 200 into adjustable DC power (i.e., the DC power output by the photovoltaic panel 200 is converted from DC to DC to output DC power with adjustable voltage and current), which is used to realize dynamic control of the DC power generated by the photovoltaic panel 200, balance the output power of each photovoltaic panel 200, and then output it to the energy storage container 100 to store the electric energy. 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 the load 600. The load 600 can be an electrical equipment in an industrial park.

[0046] The energy storage container generally includes multiple battery clusters, which include multiple battery packs, and the battery pack includes multiple batteries. In practical applications, the battery may experience thermal runaway during operation due to mechanical, electrical, thermal abuse, and its own defects. During the thermal runaway process, the battery will generate a large amount of flammable gas, which has a high risk of explosion. The shock wave, thermal radiation, and splashing of debris generated 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. When the valve is opened, the flammable gases such as H2 and CO released may cause an explosion accident in the relatively closed environment of 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 the energy storage container, 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 realize directional smoke exhaust, and timely 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 the air pressure in the box to increase sharply and cause an explosion.

[0047] The schematic diagram of the energy storage container 100 provided in the embodiment of the present application can be referred to Figure 2 and Figure 3 , Figure 2 is a cross-sectional view of the energy storage container 100 in a top view direction, Figure 3It is a cross-sectional view of the energy storage container 100 in the side view direction. The energy storage container 100 includes at least one battery cluster, a box body 110 and at least one flue 130. The box body 130 includes a rear wall 112 and a box door (not shown in the figure). The rear wall 112 and the box door are arranged oppositely and in parallel. At least one battery cluster and at least one flue 130 are arranged in the box body. Multiple battery clusters are arranged in parallel. At least one battery cluster corresponds to at least one flue one to one. At least one flue 130 is located between at least one battery cluster and the rear wall 112. Each flue 130 is provided with a plurality of 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. Each battery cluster includes a plurality of battery packs 120, and the battery packs 120 include a plurality of 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 in the flue 130. In order to ensure the sealing effect between the boss 123 and the smoke inlet 131, a sealing member 136 is provided between the outer wall of the boss 123 in contact with the periphery of the smoke inlet 131 and the smoke inlet. The boss 123 is a hollow structure, and the boss 123 is connected to the inside of the battery pack 120. The side of the boss 123 located in the flue 130 is provided with an opening, and the opening is installed with the pressure relief valve 122. 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, when the battery 1201 has thermal runaway, the high-temperature flue gas and combustible gas generated 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 gas flow direction is referenced Figure 3 As shown in the direction of the middle arrow, 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. In addition, since the battery pack 120 and the smoke inlet 131 are arranged in a one-to-one correspondence, the high-temperature flue gas generated by the 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 inside 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 has thermal runaway, the battery pack 120 with thermal runaway can quickly discharge the 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, causing explosion or fire.

[0048] Generally speaking, maintenance personnel or installation personnel usually work in front of the door of the energy storage container 100. When the flue 130 is arranged at the rear wall 112 of the energy storage container 100, the smoke exhaust port 132 can be arranged 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, and the vent 1102 on the rear wall 112 is connected with the smoke exhaust port 132 of the flue 130, so that the gas inside the flue 130 is discharged to 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 causing impact on the people around, resulting in safety accidents.

[0049] 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 .

[0050] It should be noted that the shape of the flue 130 is not limited, and the flue 130 may be a cylindrical tubular structure or a cubic tubular structure.

[0051] It should be noted that the shapes and numbers 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 round 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 round, the boss 123 can be cylindrical, and when the shape of the smoke inlet 131 is square, the boss 123 is a cube. The sealing member 136 can be arranged around the outer peripheral wall of the boss 123. To enhance the sealing between the boss 123 and the smoke inlet 131.

[0052] The embodiment of the present application does not specifically limit the type of the 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, and 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, and a waterproof and breathable membrane is arranged 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 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, and the gas inside the battery pack 120 is quickly discharged to play an explosion-proof role. The pressure relief valve 122 may also be a spring-loaded pressure relief valve 122, including a valve body, an elastic component and a protective cover. When the air pressure inside the battery pack 120 increases sharply, the elastic component pushes open the protective cover, and the pressure relief valve 122 opens to achieve rapid pressure relief.

[0053] The pressure relief valve 122 has a positive pressure oxygen blocking function. 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 .

[0054] 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 flammable gases inside the battery pack 120 or inside the flue 130, thereby causing an explosion.

[0055] In order to prevent the smoke from causing harm to the surrounding environment or people, a cooling device can be provided in the flue 130 to cool and condense the high-temperature smoke and combustible gas, thereby reducing the content and effect of the combustibles in the smoke. For example, the condensing device can be a cooling net, a cooling plate, an evaporator, etc. The cooling device can be provided at the smoke inlet 131 of the flue 130.

[0056] The emissions emitted when the battery pack 120 is in thermal runaway contain a large number of liquid or solid combustible particles, such as droplets of electrolyte. Therefore, a filtering device may be provided in the flue 130 to further reduce the content and effect of combustibles in the flue gas. For example, the filtering device may be an adsorption cotton layer, an activated carbon layer, a molecular sieve, a cyclone separator, etc., which may directly filter liquid combustible particles or solid combustible particles in the flue gas through an adsorption cotton layer, an activated carbon layer, a molecular sieve, a cyclone separator, etc., to reduce the combustibles in the flue gas. The filtering device may be provided at the smoke inlet 131 of the flue 130, or may be provided on one side of the condensing device.

[0057] 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 may be provided in the flue 130 to dilute the combustible gas. For example, the concentration of the combustible gas may be diluted by injecting a non-combustible gas into the flue 130, or by chemically reacting the combustible gas 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 may 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, so as to quickly dilute the concentration of the combustible gas in the flue 130. In addition, the dilution device may also be a porous structure with an oxidant and a catalyst attached, such as a metal mesh, metal wool or foam, and similarly, the catalyst may be a precious metal catalyst, such as palladium, platinum or rhodium, and the oxidant may be copper oxide, sodium peroxide or potassium permanganate, etc. The dilution device can be used to perform an oxidation-reduction reaction on the combustibles in the exhaust to form incombustible substances, such as catalyzing the hydrogen and carbon monoxide in the flue gas to form incombustible water and carbon dioxide. The dilution device can be provided at the smoke exhaust port 132 .

[0058] In order to ensure the air pressure balance inside the flue 130, the flue 130 is also provided with a vent 133. The position and structure of the vent 133 can be referred to in Figure 3 As shown, the vent 133 is connected to the external environment of the energy storage container 100, and the position of the vent 133 on the flue 130 is lower than the position of the smoke outlet 132. For example, the air inlet vent 133 and the smoke outlet 132 of the flue 130 can be respectively arranged at both ends of the rear wall 112 of the energy storage container 100 along the height direction of the energy storage container 100, for example, the air inlet vent is located below the smoke outlet 132. Due to the arrangement of the vent 133, it can be avoided that the high-temperature gas generated by the battery pack 120 is discharged into the flue 130, causing the internal air pressure of the flue 130 to drop sharply, causing the flue 130 to deform, and 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 a higher density can be discharged from the ventilation port 133 located at the bottom, and smoke with a lower density can be discharged from the exhaust port 132 located at the top, so that the smoke is diverted and the gas is discharged quickly.

[0059] 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 .

[0060] When the flue 130 and the box body 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 arranged opposite to each other, the first side wall 1301 is arranged opposite to the battery cluster, the second side wall 1302 is located between the first side wall 1301 and the rear wall 112, and a plurality of smoke inlets 131 are arranged on the first side wall 1301. The smoke exhaust port 132 is arranged on the second side wall 1302, and the rear wall 112 of the box body 110 is provided with an exhaust port 1101, which is connected to the smoke exhaust port 132, and the structural schematic diagram can be referred to Figure 3 Alternatively, the top wall 1303 of the flue 130 is provided with a smoke exhaust port 132, and the top wall 113 of the box body 110 is provided with an exhaust port 1101, and the exhaust port 1101 is connected to the smoke exhaust port 132. The structure can be referred to Figure 4 or Figure 5 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.

[0061] It should be understood that when the smoke exhaust port 132 is disposed on the top wall of the smoke duct 130 , a rain cover may be disposed at the smoke exhaust port 132 to prevent rainwater from entering the interior of the smoke duct 130 , thereby preventing rainwater from entering the interior of the battery.

[0062] Similarly, the vent 133 can also be designed in various positions. 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 connected to 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 connected to the vent 133. The structure can be referred to Figure 5 As shown. The vent 1102 and the vent 133 can be directly arranged opposite to each other, or the vent 1102 and the vent 133 are connected through an air duct. When there is a gap between the bottom wall 1304 of the flue and the bottom wall of the box 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 110, and the vent 1102 and the vent 133 are connected through an air duct.

[0063] 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 above-mentioned second side wall 1302 are combined into one, the flue 130 includes a first side wall 1301, and a plurality of smoke inlets 131 are provided on the first side wall 1301, and 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, and the rear wall 112 is connected between the top wall 113 and the bottom wall 114, and the two ends of the first side wall 1301 that are relatively arranged along the spacing direction of the top wall 113 and the bottom wall 114 (that is, the height direction of the energy storage container 100) are respectively connected to the top wall 113 of the box body 110 and the bottom wall 114 of the box body. The flue 130 and the box body 110 are an integrally formed structure, which can effectively simplify the structure of the energy storage system, and its structure can be referred to. Figure 6 and Figure 7 As shown. At this time, the side wall of the box 110 serves as the side wall of the flue 130, and its smoke exhaust port 132 is directly set on the side wall of the box 110. The smoke exhaust port 132 of the flue 130 can be used as the vent 1102 of the box 110. The adoption of this solution can avoid the connection operation between the smoke exhaust port 132 and the vent 1102, and save the sealing operation between the flue 130 and the box 110, which can effectively simplify the assembly process of the energy storage system, reduce the assembly parts of the energy storage container 100, and reduce the risk of smoke spilling into the box 110.

[0064] The position design of the smoke outlet 132 and the vent 133 of the flue 130 in the energy storage container 100 provided in the embodiment of the present application has multiple options. The smoke outlet 132 can be arranged on the rear wall 112 of the box body 110. The structure diagram thereof can be referred to in Figure 6 Alternatively, the smoke outlet 110 may also be provided on the top wall 113. The structure diagram thereof may refer to Figure 7 Similarly, the vent 133 may be provided on the rear wall 112 of the box body 110, and its structure may refer to Figure 3 Alternatively, the vent 133 is provided on the bottom wall 114 of the box body 110, and its structure can be referred to Figure 7 .

[0065] Based on the same inventive concept, the embodiment of the present application also provides an energy storage system, including the above-mentioned energy storage container 100 and a power converter, the power converter is used to convert the AC power output by the external AC power source into DC power and output it to the energy storage container 100, and / or, the power converter is used to convert the DC power output by the energy storage container 100 into AC power and output it to the load or the power grid. Among them, the architecture of the energy storage system can refer to Figure 1 shown.

[0066] The embodiment of the present application also provides an energy storage container 100, which includes at least one battery cluster, a box body 110 and at least one flue 130. The box body 110 includes a rear wall 112 and a box door. The rear wall 112 and the box door are arranged in parallel. The at least one battery cluster and the at least one flue 130 are arranged in the box body 110. The multiple battery clusters are arranged in parallel. The at least one battery cluster and the at least one flue 130 correspond to each other one by one. The at least one flue 130 is located between the at least one battery cluster and the rear wall 112. Each flue 130 in the at least one flue 130 is provided with a plurality of smoke inlets 131 and a smoke exhaust port 132, and the smoke exhaust port 132 is connected to the external environment of the energy storage container 100; each battery cluster in the multiple battery clusters includes a plurality of battery packs 120, and the multiple battery packs 120 are stacked. A pressure relief valve 122 is provided on the outer wall of each battery pack 120 in the multiple battery packs 120, and the pressure relief valve 122 of each battery pack 120 is arranged 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 to the multiple battery packs 120 one by one. A seal 136 is provided between the pressure relief valve 122 of each battery pack 120 and the corresponding smoke inlet 131. The opening of 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.

[0067] Its structure can be referred to Figure 8 As shown, the seal 136 is arranged around each smoke inlet 131 of the flue 130. The seal 136 can be fixed to the first side wall 1301 of the flue 130 or to the outer wall of the battery pack 120. The seal 136, the first side wall 1301, and the 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 sealed space. When installing the battery pack 120 from the box door to the inside of the energy storage container 100, a tool is generally used to install the battery pack 120 along the Figure 3The seal 136 is pushed into the energy storage container 100 in the x direction. Since the seal 136 is elastic and can be compressed, under the pressure of the battery pack 120, the seal 136 is pressed against the first side wall 1301, so that the sealing of the connection between the battery pack 120 and the flue 130 is achieved through the compression of the seal 136 to prevent the smoke from escaping into the box body 110. With this design, when the battery pack 120 has thermal runaway, the pressure relief valve 122 of the battery pack 120 opens, and the high-temperature smoke inside the battery pack 120 is released into the enclosed space, and then released to the flue 130 through the smoke inlet 131 of the first side wall 1301, and then released to the external environment through the smoke outlet 132 of the second side wall 1302, so as to achieve directional smoke exhaust of the energy storage container 100. The battery packs 120 and the smoke inlets 131 are arranged in a one-to-one correspondence, so that the high-temperature smoke generated by the thermal runaway of a battery pack 120 can be directed into the corresponding smoke inlet 131, which can prevent the high-temperature smoke released by the battery pack 120 from spreading inside 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 has a thermal runaway, the battery pack 120 with thermal runaway can quickly discharge the high-temperature smoke into the flue 130, preventing the thermal runaway from spreading to other battery clusters, thereby causing thermal runaway of the entire energy storage container 100, causing an explosion or fire.

[0068] It should be understood that in order to ensure the air pressure balance inside the flue 130, the flue 130 is also provided with a vent 133, which is in communication with the external environment of the energy storage container 100, and 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 arranged at both 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.

[0069] 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 refer to Figure 8 As shown, the smoke exhaust port 132 and the ventilation port 133 may be disposed on the rear wall 112 of the box body 110 .

[0070] The flue 130 and the box body 110 may 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 arranged opposite to each other. The first side wall 1301 is arranged opposite to 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. The smoke exhaust port 132 is provided on the second side wall 1302. The rear wall 112 of the box body 110 is provided with an exhaust port 1101. The exhaust port 1101 is connected to the smoke exhaust port 132. The structural diagram can be referred to Fig. 9 Alternatively, a smoke exhaust port 132 is provided on the top wall 1303 of the flue 130 , and an exhaust port 1101 is provided on the top wall 113 of the box body 110 , and the exhaust port 1101 is communicated with the smoke exhaust port 132 .

[0071] Continue to refer to Fig. 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,

[0072] 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 the like to improve the reliability of the connection between the sealing member 136 and the flue 130 .

[0073] Alternatively, grooves may be provided on the side walls 1301 of the battery pack 120 and the flue 130, and the two ends of the seal 136 may be clamped in the grooves to fix the seal 136. The outer wall of each battery pack 120 is arranged opposite to the side wall of the corresponding flue 130, and the outer wall of each battery pack 120 is provided with a groove, and the side wall of the flue 130 is provided with a groove, and the two ends of the seal 136 are respectively located in the groove of the outer wall of the battery pack 120 and the groove of the side wall of the flue 130.

[0074] The structure of the energy storage container 100 can be referred to Fig.10The cross-sectional view of the energy storage container 100 in the side view direction is shown. In order to ensure that the gas released by the pressure relief valve 122 is discharged into the flue 130 in a directional manner, the outer wall of each battery pack 120 is provided with a first groove 124, and the first side wall 1301 of the flue 130 is provided with a second groove 137, and the first groove 124 and the second groove 137 can be arranged opposite to each other. A sealing member 136 is provided between the outer wall of each battery pack 120 and the first side wall 1301 of the flue 130, one end of the sealing member 136 is clamped in the first groove 124, and the other end of the sealing member 136 is clamped in the second groove 137. The sealing member 136, the first side wall 1301 and the outer wall of the battery pack 120 form a sealed space, and the pressure relief valve 122 is located in the enclosed space. With such a design, when the battery pack 120 experiences thermal runaway, the pressure relief valve 122 of the battery pack 120 opens, and the high-temperature smoke 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.

[0075] In another example, the structure of the energy storage container 100 can refer to Fig.11 As shown in the cross-sectional view of the energy storage container 100 in the side view direction, the flue 130 is provided with a plurality of sub-flues 139, and the plurality of sub-flues 139 are all connected to the flue 130, and the extension direction of the plurality of sub-flues 139 is perpendicular to the extension direction of the flue 130, and the plurality of sub-flues 139 correspond one to one with the plurality of battery packs 120. At this time, the pressure relief valve 122 of the battery pack 120 is arranged on the upper outer wall of the battery pack 120, and the plurality of sub-flues 139 include a lower side wall, and the lower side wall is arranged opposite to the pressure relief valve 122 of the battery pack 120, and the lower side wall of the sub-flue 139 is provided with a smoke inlet 131, and the plurality of sub-flues 139 are arranged opposite to the pressure relief valve 122 of the battery pack 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.

[0076] Similarly, continue to refer to Fig.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 enclose 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 such a design, when the battery pack 120 has a 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 to 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.

[0077] In another example, the structure of the energy storage container 100 can refer to Fig.12 As shown in the cross-sectional view of the energy storage container 100 in the side view direction, the smoke inlets 131 of the multiple sub-flues 139 are provided with spring movable ports, and each battery pack 120 is provided with an interface 125, and the spring movable port is plugged into the interface 125 of the corresponding battery pack 120. When the battery pack 120 is installed to the corresponding position inside the energy storage container 100, the spring movable port is automatically plugged into the interface 125 on the outer wall of the corresponding battery pack 120, and a sealed space is formed between the lower side wall of the flue 130 and the outer wall of the battery pack 120, and the pressure relief valve 122 on the outer wall of the battery pack 120 is located in 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 to the sub-flue 139 through the smoke inlet 131 on the lower side wall of the flue 130, and then released to the external environment through the smoke exhaust port 132 of the flue 130, thereby realizing directional smoke exhaust of the energy storage container 100.

[0078] In another example, the structure of the energy storage container 100 can refer to Fig.13 As shown in the cross-sectional view of the energy storage container 100 in the top view, 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 arranged toward the left and right walls of the energy storage container 100. Correspondingly, the exhaust ports 1102 of the energy storage container 100 can be arranged on the left and right walls of the box 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.

[0079] Based on the same inventive concept, the embodiment of the present application also provides an energy storage system, including the above-mentioned energy storage container 100 and a power converter, the power converter is used to convert the AC power output by the external AC power source into DC power and output it to the energy storage container 100, and / or, the power converter is used to convert the DC power output by the energy storage container 100 into AC power and output it to the load or the power grid. Among them, the architecture of the energy storage system can refer to Figure 1 shown.

[0080] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope 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