Energy storage device, energy storage system and charging network

Abstract

The application relates to the technical field of energy storage, in particular to an energy storage device, an energy storage system and a charging network. The energy storage device comprises a box body, a partition plate, a battery, an electrical control component and an explosion control device. The inside of the box body is limited to define a containing space. The partition plate divides the containing space into a first cabin and a second cabin. The first cabin contains the battery, and the second cabin contains the electrical control component. The explosion control device comprises a first fan and a second fan. The box body is provided with a ventilation opening. The partition plate is provided with a first air inlet. The first air inlet is provided with the first fan. The ventilation opening is provided with the second fan. According to the application, the combustible gas can be discharged to the outside of the box body in time, the gas exchange in the whole containing space is realized, the combustible gas concentration in the second cabin and the risk of explosion are reduced, the number of openings on the outer wall of the box body is reduced to a certain extent, and the adverse effects of the openings of the box body on the strength, sealing performance and heat insulation performance of the box body are reduced.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to energy storage devices, energy storage systems and charging networks. Background Technology

[0002] New energy batteries are being used more and more widely in daily life and industry. For example, new energy vehicles equipped with batteries are already widely used. In addition, batteries are being used more and more in the field of energy storage.

[0003] In battery-powered new energy vehicles, batteries can provide all or part of the power. In the energy storage field, batteries can be installed in energy storage enclosures or directly on the user side. In practical applications of energy storage devices, the batteries in the battery compartment may experience thermal runaway, generating flammable gases. There is a risk of flammable gases accumulating in the battery compartment or seeping into the electrical compartment, ultimately leading to an internal deflagration of the energy storage product. Therefore, reducing the deflagration risk of energy storage devices is one of the key research topics in the industry. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides an energy storage device, an energy storage system, and a charging network.

[0005] This application is achieved through the following technical solution.

[0006] A first aspect of this application provides an energy storage device. In some embodiments, the energy storage device includes a housing, a partition, a battery, electrical control components, and a deflagration control device. The housing defines an internal accommodating space, and the partition is disposed within the accommodating space. The partition is configured to divide the accommodating space into a first compartment and a second compartment. The first compartment accommodates at least one battery, and the second compartment accommodates the electrical control components. The deflagration control device includes a first fan and a second fan. The housing has a ventilation opening, and the partition has a first air inlet. The first air inlet is equipped with the first fan, which drives gas from the second compartment into the first compartment. The ventilation opening is equipped with the second fan, which drives gas into or out of the accommodating space.

[0007] In the technical solution of this application embodiment, because a deflagration control device is installed in the energy storage device, the containment space can exchange gases with the outside, allowing combustible gases in the first and second compartments to be discharged to the outside in a timely manner while replenishing fresh air; and the gas flows directionally from the second compartment to the first compartment, realizing gas exchange throughout the entire containment space, improving the active dilution capability of combustible gases inside the energy storage device, preventing gas from accumulating locally in the second compartment (electrical compartment), and reducing the concentration of combustible gases in the second compartment and the risk of deflagration. In addition, since the first air inlet is located on the partition rather than the side wall of the enclosure, the number of openings on the outer wall of the enclosure is reduced to a certain extent, reducing the adverse effects of enclosure openings on the enclosure strength, sealing performance, and heat insulation performance, and maintaining the overall sealing and heat insulation effect of the energy storage device.

[0008] In some embodiments, the enclosure has multiple sidewalls. Along a first direction, the enclosure has a first sidewall and a third sidewall on both sides. A partition is disposed between the first sidewall and the third sidewall. A first compartment is located between the first sidewall and the partition, and a second compartment is located between the third sidewall and the partition. Along a second direction, the enclosure has a second sidewall and a fourth sidewall on both sides. Multiple ventilation openings are disposed on at least two of the sidewalls. The first direction intersects the second direction.

[0009] In the technical solution of this application embodiment, since the partition is set between the first side wall and the third side wall, the accommodating space is divided into the first compartment and the second compartment by the partition, forming a regular spatial layout with the side walls, which improves the space utilization rate inside the box; in addition, the ventilation opening is set on at least two different side walls, which increases the length of the gas flow path, reduces the smoke exhaust dead zone, improves the uniformity of ventilation, and is conducive to timely exhaust of combustible gases in all corners of the compartment.

[0010] In some embodiments, the ventilation opening includes a second air inlet, a first air outlet, and a second air outlet. The first air outlet is disposed on the first sidewall, and the second air inlet and the second air outlet are disposed on the third sidewall. Projected along the first direction onto a projection plane perpendicular to the first direction, the projections of the first air outlet and the first air inlet are disposed along the diagonal of the first sidewall. Projected along the first direction onto a projection plane perpendicular to the first direction, the projections of the second air outlet and the second air inlet are disposed along the diagonal of the third sidewall.

[0011] In the technical solution of this application embodiment, the diagonal layout lengthens the distance between the air inlet and the air outlet, thus extending the gas flow path in the cabin, maximizing coverage of the entire cabin space, reducing dead zones in gas flow, facilitating the discharge of combustible gases from all corners, and allowing the gas to mix with combustible gases in the cabin more during the exhaust process, further reducing the concentration of combustible gases in the cabin, improving the efficiency of ventilation and smoke extraction, and reducing the risk of combustible gas residue.

[0012] In some embodiments, the projection of the second air inlet is projected along the first direction onto a projection surface perpendicular to the first direction, and at least a portion of the projection of the second air inlet falls into the projection of the first air inlet.

[0013] In the technical solution of this application embodiment, since the projection of the second air inlet falls at least partially into the projection of the first air inlet when projected along the first direction, the two air inlets form a roughly coaxial layout, reducing the resistance during gas flow. After the external air enters from the second air inlet, it can flow directly to the first air inlet along a shorter path, which is beneficial for the gas in the second chamber to flow more smoothly to the first air inlet, improving the gas replacement efficiency in the second chamber, transferring the combustible gas in the second chamber to the first chamber in a timely manner, avoiding the accumulation of combustible gas in the second chamber, and at the same time replenishing the first chamber with fresh air, further diluting the combustible gas in the first and second chambers, and reducing the concentration of combustible gas in the containment space.

[0014] In some embodiments, the deflagration control device includes a pressure relief device disposed in the housing, the pressure relief device being configured to release pressure when the gas pressure in the containment space exceeds a threshold; at least one of the pressure relief devices is disposed on the side wall in contact with the second compartment.

[0015] In the technical solution of this application embodiment, since the deflagration control device is equipped with a pressure relief device, and the pressure relief device can release pressure when the gas pressure in the containment space exceeds the threshold, the pressure in the containment can be released in time when the combustible gas in the compartment deflagrates or the pressure rises abnormally, so as to avoid the compartment from disintegrating due to excessive pressure. At the same time, it works with the fan to reduce the risk of deflagration accidents and protect the safety of surrounding equipment and personnel.

[0016] In some embodiments, the second fan includes a fresh air fan and an exhaust fan. The fresh air fan is disposed at the second air inlet and is used to draw external gas into the second chamber. The exhaust fan is disposed at the first air outlet and the second air outlet and is used to exhaust the gas in the containment space to the outside.

[0017] In the technical solution of this application embodiment, independent control of air intake and exhaust at each air vent is achieved, realizing the division of labor between fresh air supply and cabin gas exhaust. The fresh air fan can promptly replenish fresh air to the containment space, diluting the concentration of combustible gas, while providing a sufficient gas source for the first fan to drive gas from the second cabin to the first cabin, improving the smoothness of gas flow. The exhaust fan is specifically used to exhaust the gas in the containment space to the outside, specifically exhausting combustible gas from the first and second cabins, realizing independent or combined exhaust of the two cabins. Whether to exhaust and the exhaust intensity can be controlled according to the concentration of combustible gas in the two cabins, improving the accuracy of exhaust.

[0018] In some embodiments, the deflagration control device includes an inert gas release device housed in the containment space, the inert gas release device being configured to release inert gas when the concentration of combustible gas in the containment space exceeds a threshold.

[0019] In the technical solution of this application embodiment, since the containment space is equipped with an inert gas release device, when the concentration of combustible gas is high, the energy storage device can actively release inert gas in addition to ventilation to quickly dilute the concentration of combustible gas in the chamber and reduce the risk of deflagration. In addition, the released inert gas can also reduce the oxygen concentration in the chamber, further suppressing the combustion and deflagration of combustible gas.

[0020] In some embodiments, the container is a shipping container, the first direction is the length direction of the shipping container, and the second direction is the width direction of the shipping container.

[0021] In the technical solution of this application embodiment, the energy storage device is a standard container, which is conducive to the standardized production of the energy storage device and improves production efficiency; at the same time, the container is also easy to transport and install, reducing transportation and installation costs, improving the adaptability and versatility of the energy storage device, and making it suitable for outdoor energy storage scenarios.

[0022] In some embodiments, the area of ​​the first air inlet is not less than the area of ​​the second air inlet, and the area of ​​the first air outlet is not less than the area of ​​the second air outlet.

[0023] In the technical solution of this application embodiment, the ventilation volume of the first compartment is increased to a certain extent, so that the ventilation volume of the air inlet and air outlet matches the capacity of the first compartment. This is beneficial for the larger first compartment to dissipate heat and exhaust smoke, accelerate the smoke exhaust efficiency of the first compartment, avoid the accumulation of combustible gas due to insufficient ventilation, and improve the safety of the first compartment and the entire energy storage device.

[0024] A second aspect of this application provides an energy storage system. In some embodiments, the energy storage system includes a power conversion device and the energy storage device described in the first aspect of this application. The power conversion device is used to electrically connect a power generation device and the energy storage device.

[0025] A third aspect of this application provides a charging network. In some embodiments, the charging network includes a charging pile and an energy storage device as described in the first aspect of this application or an energy storage system as described in the second aspect of this application. The energy storage device is used to provide electrical energy to the charging pile.

[0026] The beneficial effects of this disclosed embodiment include: It enables timely discharge of combustible gas from the containment space to the outside while replenishing fresh air; and the directional flow of gas from the second chamber to the first chamber achieves gas exchange throughout the entire containment space, preventing gas accumulation in the second chamber and reducing the concentration of combustible gas and the risk of deflagration. Furthermore, it can reduce the number of openings on the outer wall of the enclosure to a certain extent, minimizing the adverse effects of these openings on the enclosure's strength, sealing performance, and thermal insulation, thus maintaining the overall sealing and insulation performance of the energy storage device.

[0027] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the charging network structure in some embodiments of this application; Figure 2 This is a schematic diagram of the energy storage system in some embodiments of this application; Figure 3 This is a schematic diagram of an energy storage device in some embodiments of this application; Figure 4 This is a schematic diagram of the structure of the energy storage device in some embodiments of this application; Figure 5 This is a schematic diagram of the internal structure of the energy storage device in some embodiments of this application; Figure 6 This is a schematic diagram of the energy storage device in some other embodiments of this application; Figure 7 This is a schematic diagram of the internal structure of an energy storage device in some other embodiments of this application; Figure 8 This is a schematic diagram of the energy storage device in some embodiments of this application; Figure 9 This is a schematic diagram of the internal structure of an energy storage device in some embodiments of this application.

[0029] Explanation of reference numerals in the attached figures 1A, First air inlet; 1B, First air outlet; 2A, Second air inlet; 2B, Second air outlet; 10, First fan; 20, Second fan; 100, Battery; 200, Energy storage device; 210, Housing; 211, First side wall; 212, Second side wall; 213, Third side wall; 214, Fourth side wall; 220, Partition; 230, Pressure relief device; 240, Inert gas release device; 250, Electrical control components; 300, Charging pile; 400, Power conversion device; 1000, Charging network; 2000, Energy storage system; 3000, Power generation device; S1, First compartment; S2, Second compartment. Detailed Implementation

[0030] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in this document and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0032] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0035] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0036] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0037] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0038] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "parallel" and "perpendicular" are both allowed to have a certain degree of tolerance and / or error, including cases of being approximately parallel and approximately perpendicular.

[0039] The following is a detailed description of this application.

[0040] Currently, new energy batteries are being used more and more widely in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0041] In practical applications of energy storage devices, the batteries within the battery compartment may experience thermal runaway, generating flammable gases. There is a risk of these gases accumulating in the battery compartment or seeping into the electrical compartment, ultimately leading to an internal deflagration of the energy storage product. Therefore, mitigating the deflagration risk of energy storage devices is one of the key research topics in the industry.

[0042] After research and design, the energy storage device is internally divided into a first compartment and a second compartment, which respectively house the batteries and electrical control components. Both compartments are equipped with deflagration control devices to regulate the concentration of combustible gases, allowing fresh air to enter and exhaust gases from the compartments. Furthermore, the air inlet of the first compartment is located within a partition inside the energy storage device, minimizing its impact on the insulation performance of the device's enclosure.

[0043] Based on this design concept, this application designs an energy storage device, which includes a housing, a partition, a battery, electrical control components, and a deflagration control device. The housing defines an internal space, and the partition is disposed within the space, dividing the space into a first compartment and a second compartment. The first compartment contains at least one battery, and the second compartment contains the electrical control components. The deflagration control device includes a first fan and a second fan. The housing has a ventilation opening, and the partition has a first air inlet. The first air inlet is equipped with the first fan, which drives gas from the second compartment into the first compartment. The ventilation opening is equipped with the second fan, which drives gas into or out of the space.

[0044] Because a deflagration control device is installed in the energy storage unit, the containment space can exchange gases with the outside, allowing combustible gases in the first and second compartments to be discharged to the outside in a timely manner while replenishing fresh air. Furthermore, the directional flow of gas from the second compartment to the first compartment achieves gas exchange throughout the entire containment space, enhancing the active dilution capacity of combustible gases within the energy storage unit, preventing gas accumulation in the second compartment (electrical compartment), and reducing the concentration of combustible gases and the risk of deflagration. Additionally, because the first air inlet is located on the partition rather than the side wall of the enclosure, the number of openings on the outer wall of the enclosure is reduced to some extent, minimizing the adverse effects of openings on the enclosure's strength, sealing performance, and thermal insulation performance, thus maintaining the overall sealing and insulation effect of the energy storage unit.

[0045] The following explanation is based on the accompanying drawings.

[0046] Please refer to Figure 1 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a charging network 1000 provided in some embodiments of this application. Figure 3This is a schematic diagram of the structure of an energy storage device 200 provided in some embodiments of this application. Embodiments of this application provide a charging network 1000, which includes a charging pile 300 for charging electrical equipment. The charging network 1000 may also include an energy storage device 200, which is electrically connected to the charging pile 300 and provides power to the charging pile 300.

[0047] It should be noted that the charging pile 300 and the battery cells in the energy storage device 200 are electrically connected via cables, and the battery cells can supply their stored electrical energy to the charging pile 300. The charging pile 300 has a connector that can be connected to electrical equipment, thereby replenishing the equipment's power. The application of the energy storage device 200 in this charging network 1000 can effectively improve the safety of the charging network 1000 and also help to enhance the flexibility of the charging network 1000 during deployment.

[0048] In a charging network 1000, there can be one charging pile 300, and the energy storage device 200 provides power to the one charging pile 300; there can also be multiple charging piles 300, and the energy storage device 200 provides power to multiple charging piles 300.

[0049] As an example, such as Figure 1 As shown, the charging network 1000 includes an energy storage device 200 and two charging piles 300, with the energy storage device 200 providing power to the two charging piles 300.

[0050] The energy storage device 200 may include a battery 100, which is electrically connected to the charging pile 300 so that the battery 100 can provide power to the charging pile 300.

[0051] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of an energy storage system 2000 provided in some embodiments of this application. Embodiments of this application provide an energy storage system 2000. The energy storage system 2000 includes a power conversion device 400, which is electrically connected to a power generation device 3000 to convert the electrical power provided by the power generation device 3000. The energy storage system 2000 may also include an energy storage device 200, which is electrically connected to the power conversion device 400. The power conversion device 400 converts the electrical energy provided by the power generation device 3000 and stores it in the energy storage device 200.

[0052] A power conversion device is used to connect the power generation device 3000 and the energy storage device 200. The power generation device 3000 generates electrical energy and stores it in the energy storage device 200 via the power conversion device. The use of the energy storage device 200 in the energy storage system 2000 effectively improves its operational safety. In specific implementations, the power generation equipment can be solar panels, hydroelectric power generation equipment, thermal power generation equipment, etc. This application does not limit the specific type of power generation equipment.

[0053] As an example, such as Figure 2 As shown, the energy storage system 2000 includes an energy storage device 200 and a power conversion device 400. The two power generation devices 3000 respectively transmit the generated electrical energy to the power conversion device 400, and the power conversion device 400 introduces the electrical energy into the energy storage device 200 for storage.

[0054] Please refer to Figure 3 The energy storage device 200 includes a housing 210, and a battery 100 is installed inside the housing 210.

[0055] As an example, the energy storage device 200 can be an energy storage container, an energy storage cabinet, etc.

[0056] As an example, energy storage device 200 can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage power stations can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. Wind power generation systems collect wind energy from wind turbines, convert it into electrical energy, and store it in energy storage device 200. Solar power generation systems can convert solar energy into electrical energy, store it in energy storage device 200, and supply it to users as needed. Mobile power systems can supply power to relevant electrical equipment in areas where the mains power supply cannot reach, such as remote mountainous areas and remote wilderness areas. Temporary power supply systems can provide power to users when there is insufficient power supply.

[0057] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0058] Below, refer to Figures 4 to 9 Some embodiments of this application will be described in detail.

[0059] Figure 4 This is a schematic diagram of the structure of the energy storage device in some embodiments of this application; Figure 5This is a schematic diagram of the internal structure of the energy storage device in some embodiments of this application; Figure 6 This is a schematic diagram of the energy storage device in some other embodiments of this application; Figure 7 This is a schematic diagram of the internal structure of an energy storage device in some other embodiments of this application; Figure 8 This is a schematic diagram of the energy storage device in some embodiments of this application; Figure 9 This is a schematic diagram of the internal structure of an energy storage device in some embodiments of this application.

[0060] In some embodiments of this application, for ease of explanation, a first direction, a second direction, and a vertical direction are defined. These directions intersect each other, including perpendicular intersections. To facilitate understanding of the embodiments of this application, the embodiments shown in Figures 4 to 9 are illustrated using the example of the first direction, second direction, and vertical direction being perpendicularly intersecting each other. However, those skilled in the art should understand that the embodiments of this application are not limited to the case where these three directions intersect perpendicularly. For ease of explanation, as indicated by the arrows in Figures 4 to 9, the direction indicated by arrow Y is the first direction, the direction indicated by arrow X is the second direction, and the direction indicated by arrow Z is the vertical direction.

[0061] The first aspect of this application provides an energy storage device 200. In the embodiments of this application, the energy storage device 200 includes a housing 210, a partition 220, a battery 100, an electrical control component 250, and a deflagration control device. The housing 210 defines an accommodating space, and the partition 220 is disposed within the accommodating space. The partition 220 is configured to divide the accommodating space into a first compartment S1 and a second compartment S2. The first compartment S1 accommodates at least one battery 100, and the second compartment S2 accommodates the electrical control component 250. The deflagration control device includes a first fan 10 and a second fan 20. The housing 210 has a ventilation opening, and the partition 220 has a first air inlet 1A. The first air inlet 1A is provided with the first fan 10, which is used to drive gas from the second compartment S2 into the first compartment S1. The ventilation opening is provided with the second fan 20, which is used to drive gas into or out of the accommodating space.

[0062] As is understood, energy storage device 200 refers to a device capable of storing and releasing electrical energy. Energy storage device 200 achieves the storage and release of electrical energy through an internal battery 100.

[0063] Understandably, the battery 100 can be a lithium battery 100, consisting of multiple battery cells 100 connected in series and parallel. Optionally, the battery 100 can adopt a modular design, allowing for independent replacement of the modular battery 100, thus reducing maintenance costs.

[0064] Optionally, the battery 100 is electrically connected to the charging pile 300 so that the battery 100 can provide power to the charging pile 300.

[0065] It should be noted that the electrical control component 250 refers to the component used to control the operation of the energy storage device 200 and monitor the equipment status, and may include circuit breakers, contactors, relays, PCS and EMS control cabinets, etc. The electrical control component 250 is located in the second compartment S2, which is physically isolated from the battery 100 in the first compartment S1 to reduce the risk of contact with flammable gases and reduce the risk of deflagration.

[0066] Optionally, the energy storage device 200 can be an energy storage container, an energy storage cabinet, etc.

[0067] Understandably, the enclosure 210 is the outer shell of the energy storage device 200, used to define the storage space and protect the internal components. Optionally, the enclosure 210 can be the enclosure of a shipping container or the cabinet of an electrical control unit.

[0068] It should be noted that the box 210 is usually a cuboid, but in embodiments not shown, the box 210 may also be other shapes.

[0069] Optionally, an access door may be provided on the side wall of the container 210 to facilitate the installation and maintenance of internal components. Optionally, the access door may be located on the side wall of the first compartment S1 and / or the side wall of the second compartment S2.

[0070] Optionally, the material of the housing 210 can be any one or a combination of steel, fiberglass, aluminum alloy, etc., and this embodiment does not limit this.

[0071] It is understood that the interior of the housing 210 has a storage space. The shape of the storage space is defined by the inner wall of the housing 210.

[0072] For example, such as Figure 5 , Figure 7 , Figure 9 As shown, the housing 210 has a partition 220 inside, which divides the storage space into at least a first compartment S1 and a second compartment S2. The first compartment S1 houses the battery 100, which is referred to as the battery 100 compartment in this embodiment, and the second compartment S2 houses the electrical control components 250, which is referred to as the electrical compartment.

[0073] Optionally, the partition 220 may be parallel to or not parallel to a portion of the side wall of the housing 210.

[0074] For example, the container 210 is cuboid in shape. The partition 220 is parallel to the two side walls of the container 210 along the first direction (Y), dividing the entire accommodating space into a first compartment S1 and a second compartment S2. Both compartments are cuboid in shape.

[0075] Optionally, the material of the partition 220 may be the same as or different from that of the housing 210.

[0076] For example, the partition 220 contacts and connects to the side walls, top walls, and bottom walls of the housing 210, separating the first compartment S1 from the second compartment S2. Optionally, the connection method can be welding, bolting, etc. Sealing strips can be provided at the connection points to improve the isolation and sealing performance.

[0077] Optionally, cable holes may be provided on the partition 220 for laying cables.

[0078] For example, a first air inlet 1A is provided on the partition 220. It can be understood that the first air inlet 1A penetrates the partition 220 along the thickness direction (i.e., the first direction (Y)) so that the gas in the first compartment S1 and the second compartment S2 can flow and exchange through the first air inlet 1A.

[0079] Optionally, the first air inlet 1A can be circular, elliptical, or square in shape.

[0080] For example, the shape of the first air inlet 1A matches the first fan 10, and the first fan 10 can be embedded in the first air inlet 1A.

[0081] As another example, the first fan 10 can be detachably mounted at the first air inlet 1A via a bracket.

[0082] It is understandable that the first fan 10 can drive gas from the second compartment S2 into the first compartment S1, realizing directional gas flow between the two compartments.

[0083] Optionally, the first fan type 10 can be an axial flow fan, a centrifugal fan, or an explosion-proof fan (such as an explosion-proof axial flow fan). Its blades are made of flame-retardant material and will not generate sparks when rotating, thus avoiding the ignition of flammable gases.

[0084] Understandably, the ventilation openings are located on the enclosure 210 to facilitate gas exchange between the interior and the outside environment.

[0085] Optionally, the ventilation opening can be located on the wall of the container 210 on the side where the first compartment S1 is located, or on the wall of the container 210 on the side where the second compartment S2 is located.

[0086] Understandably, the number of ventilation openings can be designed according to the cabin volume and ventilation requirements.

[0087] Optionally, the ventilation openings can be circular or square, and their locations can be distributed on different side walls or the same side wall of the enclosure 210.

[0088] Optionally, protective nets can be installed on the ventilation openings to prevent foreign objects from entering the cabin.

[0089] Alternatively, the ventilation opening can be designed with louvers, which can be used to adjust the ventilation area of ​​the ventilation opening to adapt to the ventilation requirements under different working conditions.

[0090] Optionally, a second fan 20 can be installed at the vent, which can either draw external gas into the containment space or exhaust gas from the containment space.

[0091] It should be noted that the deflagration control device can control the concentration of combustible gases inside the cabin, reducing the risk or hazard of deflagration.

[0092] Optionally, the deflagration control device may include an active structure and a passive structure. For example, the first fan 10 and the second fan 20 of the deflagration control device are connected to a controller, and the controller controls the exhaust.

[0093] Optionally, the first fan 10 and the second fan 20 can be the same type of fan or different types of fans.

[0094] It is understandable that when the first fan 10 and the second fan 20 are rotating, they can drive the gas flow, and when they are not rotating, the gas can naturally diffuse to the other side.

[0095] It is understandable that the first air inlet 1A and the ventilation opening can be equipped with electric baffles, which can block the air opening and block the gas flow path when ventilation is not needed.

[0096] In the technical solution of this application embodiment, since a deflagration control device is installed in the energy storage device 200, the containment space can exchange gases with the outside, allowing combustible gases in the first compartment S1 and the second compartment S2 to be discharged to the outside in a timely manner while replenishing fresh air; and the gas flows directionally from the second compartment S2 to the first compartment S1, realizing gas exchange throughout the containment space, improving the active dilution capability of combustible gases inside the energy storage device 200, preventing gas from accumulating locally in the second compartment S2, and reducing the concentration of combustible gases in the second compartment S2 and the risk of deflagration. In addition, since the first air inlet 1A is located on the partition 220 rather than on the side wall of the housing 210, the number of openings on the outer wall of the housing 210 is reduced to a certain extent, reducing the adverse effects of the openings on the strength, sealing performance and heat insulation performance of the housing 210, and maintaining the overall sealing and heat insulation effect of the energy storage device 200.

[0097] In the embodiments of this application, the box 210 has multiple side walls. Along the first direction (Y), the two sides of the box 210 have a first side wall 211 and a third side wall 213. A partition 220 is disposed between the first side wall 211 and the third side wall 213. A first compartment S1 is located between the first side wall 211 and the partition 220, and a second compartment S2 is located between the third side wall 213 and the partition 220. Along the second direction (X), the two sides of the box 210 have a second side wall 212 and a fourth side wall 214. Multiple ventilation openings are disposed on at least two side walls. The first direction (Y) and the second direction (X) intersect.

[0098] For example, such as Figure 4 , Figure 6 , Figure 8 As shown, the box 210 is a cuboid shape, with the first direction (Y) and the second direction (X) perpendicular to each other, and both perpendicular to the vertical direction (Z). The box 210 has four side walls, which are enclosed by the first side wall 211, the second side wall 212, the third side wall 213 and the fourth side wall 214.

[0099] For example, such as Figure 6 , Figure 8 As shown, ventilation openings are provided at least on the first sidewall 211 and the third sidewall 213.

[0100] For example, such as Figure 4 As shown, ventilation openings are provided at least on the first sidewall 211, the second sidewall 212, and the third sidewall 213.

[0101] As another example, in some embodiments not shown, ventilation openings are provided at least on the second sidewall 212 and the fourth sidewall 214.

[0102] Alternatively, the vent can be located near the upper end of the side wall or near the lower end of the side wall.

[0103] In the technical solution of this application embodiment, since the partition 220 is set between the first side wall 211 and the third side wall 213, the accommodating space is divided into the first compartment S1 and the second compartment S2 by the partition 220, forming a regular spatial layout with the side walls, which improves the space utilization rate inside the box 210; in addition, the ventilation opening is set on at least two different side walls, which increases the length of the gas flow path, reduces the smoke exhaust dead zone, improves the uniformity of ventilation, and is conducive to timely exhaust of combustible gases in various corners of the compartment.

[0104] In the embodiments of this application, the ventilation opening includes a second air inlet 2A, a first air outlet 1B, and a second air outlet 2B. The first air outlet 1B is disposed on the first side wall 211, and the second air inlet 2A and the second air outlet 2B are disposed on the third side wall 213. The projections of the first air outlet 1B and the first air inlet 1A are disposed along the diagonal of the first side wall 211, projected along the first direction (Y) onto a projection plane perpendicular to the first direction (Y). The projections of the second air outlet 2B and the second air inlet 2A are disposed along the diagonal of the third side wall 213, projected along the first direction (Y) onto a projection plane perpendicular to the first direction (Y).

[0105] Understandably, the second air inlet 2A, in conjunction with the second fan 20, is used to supply fresh air to the second compartment S2, while the second air outlet 2B is used to exhaust the gas inside the second compartment S2 to the outside. Both are located on the third side wall 213 near the second compartment S2.

[0106] In some embodiments not shown, the second air inlet 2A may also be located on the second sidewall 212 of the second compartment S2.

[0107] Understandably, the first air outlet 1B is located on the first side wall 211, and works with the first air inlet 1A to allow gas to flow in and out of the first compartment S1.

[0108] The embodiments of this application do not limit the shape of the first air inlet 1A, the first air outlet 1B, the second air inlet 2A, and the second air outlet 2B.

[0109] It is understandable that, when projected along the first direction (Y), the projected shapes of the first sidewall 211 and the third sidewall 213 are rectangles, with the diagonals being the lines connecting two non-adjacent corners.

[0110] For example, along the vertical direction (Z), the height of the first air inlet 1A is lower than that of the first air outlet 1B, and the height of the second air inlet 2A is lower than that of the second air outlet 2B. Since the air outlets need to exhaust smoke, setting them at a higher position can improve smoke extraction efficiency.

[0111] In the technical solution of this application embodiment, the diagonal layout lengthens the distance between the air inlet and the air outlet, thus extending the gas flow path in the cabin, maximizing coverage of the entire cabin space, reducing dead zones in gas flow, facilitating the discharge of combustible gases from all corners, and allowing the gas to mix with combustible gases in the cabin more during the exhaust process, further reducing the concentration of combustible gases in the cabin, improving the efficiency of ventilation and smoke extraction, and reducing the risk of combustible gas residue.

[0112] In the embodiments of this application, the projection of the second air inlet 2A is projected along the first direction (Y) onto a projection plane perpendicular to the first direction (Y), and at least a portion of the projection of the second air inlet 2A falls into the projection of the first air inlet 1A.

[0113] It is understandable that at least a portion of the projection of the second air inlet 2A falls into the projection of the first air inlet 1A, making the two air inlets form a roughly coaxial layout, thereby improving gas flow efficiency.

[0114] For example, both the first air inlet 1A and the second air inlet 2A are rectangular, and their projected shapes are also rectangular, with the projected portions of the first air inlet 1A and the second air inlet 2A overlapping.

[0115] In the technical solution of this application embodiment, since the projection of the second air inlet 2A falls at least partially into the projection of the first air inlet 1A when projected along the first direction (Y), the two air inlets form a roughly coaxial layout, reducing the resistance during gas flow. After the external air enters from the second air inlet 2A, it can flow directly to the first air inlet 1A along a shorter path, which is beneficial for the gas in the second compartment S2 to flow more smoothly to the first air inlet 1A, improving the gas replacement efficiency in the second compartment S2, timely transferring the combustible gas in the second compartment S2 to the first compartment S1, avoiding the accumulation of combustible gas in the second compartment S2, and at the same time replenishing fresh air to the first compartment S1, further diluting the combustible gas in the first compartment S1 and the second compartment S2, and reducing the concentration of combustible gas in the containment space.

[0116] In an embodiment of this application, the deflagration control device includes a pressure relief device 230, which is disposed in the housing 210 and configured to release pressure when the gas pressure in the containment space exceeds a threshold; at least one pressure relief device 230 is disposed on the side wall in contact with the second compartment S2.

[0117] Optionally, the pressure relief device 230 can be triggered by active or passive pressure relief.

[0118] For example, the pressure relief device 230 may include a pressure relief plate made of a brittle material, such as a thin steel plate or an aluminum alloy plate, with a thickness designed according to a pressure threshold. When the pressure exceeds the threshold, the plate can passively rupture to release pressure. In this embodiment, the pressure threshold can be designed based on the capacity of the housing 210, explosion-proof requirements, etc.

[0119] As another example, the pressure relief device 230 includes a pressure relief valve that can be opened actively (electromagnetically controlled, hydraulically controlled) or passively, and can be passively ruptured to relieve pressure when the pressure exceeds a threshold.

[0120] Optionally, the pressure relief device 230 may be installed on the third sidewall 213, or at least on the portion of the second sidewall 212 or the fourth sidewall 214 that contacts the second compartment S2. It relieves pressure when the pressure in the second compartment S2 exceeds a threshold.

[0121] For example, such as Figure 8 , Figure 9As shown, the pressure relief device 230 can be installed on the second side wall 212, and both the first compartment S1 and the second compartment S2 can be depressurized through the pressure relief device 230.

[0122] In the technical solution of this application embodiment, since the deflagration control device is equipped with a pressure relief device 230, and the pressure relief device 230 can relieve pressure when the gas pressure in the containment space exceeds the threshold, the pressure in the containment can be released in time when the combustible gas in the compartment deflagration or the pressure rises abnormally, so as to prevent the box 210 from disintegrating due to excessive pressure. At the same time, it works with the fan to reduce the risk of deflagration accidents and protect the safety of surrounding equipment and personnel.

[0123] In the embodiments of this application, the second fan 20 includes a fresh air fan and an exhaust fan. The fresh air fan is disposed at the second air inlet 2A and is used to draw external air into the second chamber S2. The exhaust fan is disposed at the first air outlet 1B and the second air outlet 2B and is used to exhaust the air in the containment space to the outside.

[0124] Optionally, the fresh air fan is a unidirectional fan that only sends outside air into the second compartment S2.

[0125] Optionally, the first fan 10 can also be a fresh air fan, which sends the gas from the second chamber S2 into the first chamber S1. It is understood that when the concentration of combustible gas in the second chamber S2 is high, the first fan 10 sends the flue gas into the first chamber S1 to dilute the concentration in the second chamber S2, and when the concentration of combustible gas in the first chamber S1 is high, the first fan 10 sends the air from the second chamber S2 into the first chamber S1 to dilute the concentration of flue gas in the first chamber S1.

[0126] In the technical solution of this application embodiment, independent control of air intake and exhaust at each air vent is achieved, realizing the division of labor between fresh air replenishment and in-cabin gas exhaust. The fresh air fan can promptly replenish fresh air to the containment space, diluting the concentration of combustible gas, while providing a sufficient gas source for the first fan 10 to drive gas from the second compartment S2 to the first compartment S1, improving the smoothness of gas flow. The exhaust fan is specifically used to exhaust the gas in the containment space to the outside, specifically exhausting combustible gas in the first compartment S1 and the second compartment S2, realizing independent or combined exhaust of the two compartments. Whether to exhaust and the exhaust intensity can be controlled according to the concentration of combustible gas in the two compartments, improving the accuracy of exhaust.

[0127] In the embodiments of this application, the deflagration control device includes an inert gas release device 240, which is housed in a containment space. The inert gas release device 240 is configured to release inert gas when the concentration of combustible gas in the containment space exceeds a threshold.

[0128] Understandably, the inert gas release device 240 can detect the concentration of combustible gas inside through sensors, and release inert gas, such as helium or argon, after reaching a threshold. Inert gas is non-flammable and does not support combustion, and can rapidly reduce the concentration of oxygen and combustible gas, thus achieving the function of explosion suppression.

[0129] Optionally, the inert gas release device 240 includes a gas cylinder, a nozzle, etc.

[0130] For example, the deflagration control device may also include a nitrogen release device that releases nitrogen when the combustible gas exceeds a threshold.

[0131] For example, such as Figure 5 , Figure 7 , Figure 9 As shown, the inert gas release device 240 is disposed in the second compartment S2. In other embodiments, the inert gas release device 240 may also be disposed in the first compartment S1.

[0132] In the technical solution of this application embodiment, since the containment space has an inert gas release device 240 built in, when the concentration of combustible gas is high, the energy storage device 200 can actively release inert gas in addition to ventilation, rapidly diluting the concentration of combustible gas in the chamber and reducing the risk of deflagration. In addition, after the inert gas is released, it can also reduce the oxygen concentration in the chamber, further suppressing the combustion and deflagration of combustible gas.

[0133] In the embodiments of this application, such as Figure 4 , Figure 6 , Figure 8 As shown, the container 210 is a shipping container, the first direction (Y) is the length direction of the container, and the second direction (X) is the width direction of the container.

[0134] Alternatively, the container can be a standard 20-foot container, which is convenient for manufacturing and transportation.

[0135] It is understandable that the first direction (Y), the second direction (X), and the vertical direction (Z) are perpendicular to each other. Along both sides of the vertical direction (Z), the container has a top wall and a bottom wall.

[0136] It is understood that in this embodiment, the container extends along the first direction (Y), and the partition 220 is disposed between the first side wall 211 and the third side wall 213 along the first direction (Y).

[0137] In the technical solution of this application embodiment, the housing 210 of the energy storage device 200 is a standard container, which is conducive to the standardized production of the energy storage device 200 and improves production efficiency; at the same time, the container is also convenient for transportation and installation, reducing transportation and installation costs, improving the adaptability and versatility of the energy storage device 200, and making it suitable for outdoor energy storage scenarios.

[0138] In the embodiments of this application, the area of ​​the first air inlet 1A is not less than the area of ​​the second air inlet 2A, and the area of ​​the first air outlet 1B is not less than the area of ​​the second air outlet 2B.

[0139] It is understandable that the volume of the first compartment S1 storing battery 100 is generally not less than the volume of the second compartment S2, therefore the ventilation volume of the first compartment S1 is not less than the ventilation volume of the second compartment S2. Furthermore, the area of ​​the first air inlet 1A is not less than the area of ​​the second air inlet 2A, and the area of ​​the first air outlet 1B is not less than the area of ​​the second air outlet 2B.

[0140] It is understandable that the ventilation volume of the first fan 10 at the first air inlet 1A is not less than the ventilation volume of the second fan 20 at the second air inlet 2A.

[0141] For example, the area of ​​the first air inlet 1A is larger than the area of ​​the second air inlet 2A, and the area of ​​the first air outlet 1B is larger than the area of ​​the second air outlet 2B.

[0142] In the technical solution of this application embodiment, the ventilation volume of the first compartment S1 is increased to a certain extent, so that the ventilation volume of the air inlet and air outlet matches the capacity of the first compartment S1. This is beneficial for the larger first compartment S1 to dissipate heat and exhaust smoke, accelerate the smoke exhaust efficiency of the first compartment S1, avoid the accumulation of combustible gas due to insufficient ventilation, and improve the safety of the first compartment S1 and the entire energy storage device 200.

[0143] The second aspect of this application provides an energy storage system 2000. In the embodiments of this application, the energy storage system 2000 includes a power conversion device and an energy storage device 200 of the first aspect of this application. The power conversion device is used to electrically connect the power generation device 3000 and the energy storage device 200.

[0144] For example, please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of an energy storage system 2000 provided in some embodiments of this application. The energy storage system 2000 includes a power conversion device 400, which is electrically connected to a power generation device 3000 to convert the electrical power provided by the power generation device 3000. The energy storage system 2000 may also include an energy storage device 200, which is electrically connected to the power conversion device 400. The power conversion device 400 converts the electrical energy provided by the power generation device 3000 and stores it in the energy storage device 200.

[0145] The power conversion device 400 is used to connect between the power generation device 3000 and the energy storage device 200. The power generation device 3000 is used to generate electrical energy.

[0146] For example, such as Figure 2 As shown, the energy storage system 2000 includes an energy storage device 200 and a power conversion device 400. The two power generation devices 3000 respectively transmit the generated electrical energy to the power conversion device 400, and the power conversion device 400 introduces the electrical energy into the energy storage device 200 for storage.

[0147] A third aspect of the present application provides a charging network 1000. In the embodiments of the present application, the charging network 1000 includes a charging pile 300 and an energy storage device 200 of the first aspect of the present application or an energy storage system 2000 of the second aspect of the present application. The energy storage device 200 is used to provide power to the charging pile 300.

[0148] For example, this application provides a charging network 1000, which includes a charging pile 300 for charging electrical equipment. The charging network 1000 may also include an energy storage device 200, which is electrically connected to the charging pile 300 and provides power to the charging pile 300.

[0149] It should be noted that the charging pile 300 and the individual battery 100 in the energy storage device 200 are electrically connected via cables. The individual battery 100 can supply its stored electrical energy to the charging pile 300. The charging pile 300 has a connector that can be connected to electrical equipment, thereby replenishing the equipment's power.

[0150] For example, such as Figure 1 As shown, the charging network 1000 includes an energy storage device 200 and two charging piles 300, with the energy storage device 200 providing power to the two charging piles 300.

[0151] The specific solutions of the embodiments of this application are described below with reference to the accompanying drawings.

[0152] This application relates to an energy storage device 200, including a container 210. The container 210 is a shipping container, and has at least two isolated compartments. The storage space within the container 210 is separated into a first compartment S1 (battery 100 compartment) and a second compartment S2 (electrical compartment) by a partition 220. The first compartment S1 is used to house the battery 100, and the second compartment S2 is used to house the electrical control components 250 of the battery 100 and fire control components (such as fire alarms). This application incorporates deflagration control devices in both the first compartment S1 and the second compartment S2.

[0153] In a specific embodiment, the deflagration control device includes a fan and a pressure relief device 230, etc. The fan includes a first fan 10 and a second fan 20. A first air inlet 1A is opened on the partition 220. The first fan 10 is installed at the position of the first air inlet 1A. The first fan 10 drives the gas from the second compartment S2 into the first compartment S1.

[0154] In a specific embodiment, ventilation openings are provided on the housing 210. These openings include a first air outlet 1B, a second air inlet 2A, and a second air outlet 2B. The first air outlet 1B is located on the first compartment S1 side, corresponding to the first air inlet 1A, and is used to exhaust gas from the first compartment S1. The second air inlet 2A and the second air outlet 2B are located on the second compartment S2 side. External gas enters the second compartment through the second air inlet 2A and then flows out through the second air outlet 2B. A second fan 20 is installed at the aforementioned ventilation opening locations. The second fan 20 is selected as either a fresh air fan or an exhaust fan based on the ventilation opening design. For example, exhaust fans are installed at the first air outlet 1B and the second air outlet 2B, while a fresh air fan is installed at the second air inlet 2A.

[0155] The ventilation system of the first compartment S1 includes a first air inlet 1A, a first air outlet 1B, and a fan installed at the aforementioned air outlet.

[0156] The ventilation system of the second compartment S2 includes a second air inlet 2A, a second air outlet 2B, and a fan installed at the aforementioned air outlets.

[0157] In a specific embodiment, the air outlets and air inlets of the two compartments are designed diagonally opposite each other to minimize dead zones in the smoke exhaust path. Furthermore, the air inlets are located at a lower point, and the air outlets at a higher point.

[0158] Generally speaking, the volume of the first compartment S1 is larger than that of the second compartment S2. Therefore, in terms of ventilation design, the ventilation volume of the first air inlet 1A is greater than that of the second air inlet 2A, and the ventilation volume of the first air outlet 1B is greater than that of the second air outlet 2B.

[0159] In a specific embodiment, the first air inlet 1A and the second air inlet 2A can be designed on the same axis, that is, their projections along the first direction (Y) at least partially overlap.

[0160] In a specific embodiment, the first compartment S1 and the second compartment S2 can be ventilated and replaced independently, or they can work together to achieve ventilation replacement of the entire containment space.

[0161] In a specific embodiment, when the combustible flue gas concentration in the second compartment S2 exceeds the threshold while the combustible flue gas concentration in the first compartment S1 does not exceed the threshold, only the fan system of the second compartment S2 (the fans of the second air inlet 2A and the second air outlet 2B) is turned on, while the fan system of the first compartment S1 (the fans of the first air inlet 1A and the first air outlet 1B) remains closed.

[0162] In a specific embodiment, when the concentration of combustible flue gas in the first compartment S1 exceeds the threshold while the concentration of combustible flue gas in the second compartment S2 does not exceed the threshold, one method of exhausting the smoke is to only turn on the fan system of the first compartment S1 (the fans of the first air inlet 1A and the first air outlet 1B), while keeping the fan system of the second compartment S2 (the fans of the second air inlet 2A and the second air outlet 2B) closed.

[0163] In a specific embodiment, when the concentration of combustible flue gas in the first compartment S1 exceeds the threshold while the concentration of combustible flue gas in the second compartment S2 does not exceed the threshold, another method of exhausting the flue gas is to simultaneously open the air inlet of the second compartment S2 fan system in addition to opening the fan system of the first compartment S1, which is conducive to smooth air intake.

[0164] In a specific embodiment, if flue gas backflows into the second compartment S2, causing the concentration of combustible flue gas in the second compartment S2 to exceed the threshold, the fan system of the second compartment S2 can be turned on simultaneously.

[0165] In a specific embodiment, if both compartments exceed the threshold, the fan systems of both compartments will be turned on.

[0166] Optionally, for the exhaust of smoke from the second compartment S2, when the concentration of combustible smoke reaches 100% of the lower deflagration limit and continued ventilation can no longer reduce the smoke concentration, the fan is turned off, and the second air inlet 2A and the second air outlet 2B are opened to allow the smoke to be automatically discharged through internal pressure.

[0167] In a specific embodiment, the deflagration control device includes a pressure relief device 230, which can be a deflagration plate. The deflagration plate can be opened actively or passively to relieve pressure. For example, when a deflagration is imminent inside the electrical compartment, the deflagration plate is passively opened to release the deflagration pressure and prevent the housing 210 from disintegrating.

[0168] In a specific embodiment, the deflagration control device may further include an inert gas release device 240, which releases an inert gas, such as nitrogen, to dilute the concentration of combustible gas when the concentration of combustible gas exceeds a threshold.

[0169] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0170] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0171] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of protection claimed in this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of protection claimed.

Claims

1. An energy storage device, characterized in that, The device includes a housing, a partition, a battery, electrical control components, and a deflagration control device. The housing defines an internal space, and the partition is disposed within the space, dividing the space into a first compartment and a second compartment. The first compartment houses at least one battery, and the second compartment houses the electrical control components. The deflagration control device includes a first fan and a second fan. The housing has a ventilation opening, and the partition has a first air inlet. The first air inlet is equipped with the first fan, which drives gas from the second compartment into the first compartment. The ventilation opening is equipped with the second fan, which drives gas into or out of the space.

2. The energy storage device according to claim 1, characterized in that, The container has multiple side walls. Along a first direction, the two sides of the container have a first side wall and a third side wall. The partition is disposed between the first side wall and the third side wall. The first compartment is located between the first side wall and the partition, and the second compartment is located between the third side wall and the partition. Along the second direction, the box body has a second sidewall and a fourth sidewall on both sides, and a plurality of ventilation openings are provided on at least two of the sidewalls, and the first direction intersects the second direction.

3. The energy storage device according to claim 2, characterized in that, The ventilation opening includes a second air inlet, a first air outlet, and a second air outlet. The first air outlet is disposed on the first side wall, and the second air inlet and the second air outlet are disposed on the third side wall. Projecting along the first direction onto a projection plane perpendicular to the first direction, the projections of the first air outlet and the first air inlet are disposed along the diagonal of the first side wall. Projecting along the first direction onto a projection plane perpendicular to the first direction, the projections of the second air outlet and the second air inlet are disposed along the diagonal of the third side wall.

4. The energy storage device according to claim 3, characterized in that, The projection of the second air inlet is projected along the first direction onto a projection plane perpendicular to the first direction, and at least a portion of the projection of the second air inlet falls into the projection of the first air inlet.

5. The energy storage device according to any one of claims 2 to 4, characterized in that, The deflagration control device includes a pressure relief device disposed in the housing, the pressure relief device being configured to release pressure when the gas pressure in the containment space exceeds a threshold; at least one of the pressure relief devices is disposed on the side wall in contact with the second compartment.

6. The energy storage device according to claim 3 or 4, characterized in that, The second fan includes a fresh air fan and an exhaust fan. The fresh air fan is located at the second air inlet and is used to draw external air into the second chamber. The exhaust fan is located at the first air outlet and the second air outlet and is used to exhaust the air in the containment space to the outside.

7. The energy storage device according to any one of claims 1 to 4, characterized in that, The deflagration control device includes an inert gas release device housed in the containment space. The inert gas release device is configured to release inert gas when the concentration of combustible gas in the containment space exceeds a threshold.

8. The energy storage device according to any one of claims 2 to 4, characterized in that, The container is a shipping container, the first direction is the length direction of the shipping container, and the second direction is the width direction of the shipping container.

9. The energy storage device according to claim 3 or 4, characterized in that, The area of ​​the first air inlet is not less than the area of ​​the second air inlet, and the area of ​​the first air outlet is not less than the area of ​​the second air outlet.

10. An energy storage system, characterized in that, It includes a power conversion device and an energy storage device according to any one of claims 1 to 9, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

11. A charging network, characterized in that, The device includes a charging pile and an energy storage device according to any one of claims 1 to 9 or an energy storage system according to claim 10, wherein the energy storage device is used to provide electrical energy to the charging pile.

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