Energy storage device and energy storage system

Abstract

Provided in the present application are an energy storage device and an energy storage system. The energy storage device comprises a first compartment and a battery device, wherein the first compartment comprises a first top wall and a first side wall connected to each other; the first top wall is provided with an exhaust mechanism, which can communicate the interior of the first compartment with the outside; and the first compartment accommodates the battery device. Since the first side wall mainly plays a role in supporting and load bearing in the first compartment, and the exhaust mechanism, which communicates the interior of the first compartment with the outside, is arranged on the first top wall instead of the first side wall, the impact of the arrangement of the exhaust mechanism on the structure of the first side wall is reduced, thereby reducing the impact of the arrangement of the exhaust mechanism on the supporting effect and load-bearing capacity of the wall of the first compartment, facilitating an improvement in the stress condition of the energy storage device and facilitating an improvement in the reliability of the energy storage device.

Description

Energy storage devices and energy storage systems Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to an energy storage device and energy storage system. Background Technology

[0002] Battery devices have advantages such as high specific energy and high power density, and are widely used in energy storage devices such as energy storage containers or energy storage cabinets. Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems.

[0003] Because energy storage devices have advantages such as large capacity and high degree of integration, their application range is becoming wider and wider, and how to improve the reliability of energy storage devices is receiving increasing attention from those skilled in the art.

[0004] Summary of the Invention

[0005] In view of the above problems, this application provides an energy storage device and an energy storage system, which have good reliability.

[0006] In a first aspect, some embodiments of this application provide an energy storage device, which includes a first compartment and a battery device. The first compartment includes a first top wall and a first side wall connected to each other. The first top wall is provided with a first exhaust mechanism, which can communicate the interior of the first compartment with the outside. The first compartment houses the battery device.

[0007] Since the first sidewall is the main support and load-bearing component in the first compartment, by placing the exhaust mechanism connecting the interior of the first compartment to the outside on the first top wall instead of the first sidewall, the impact of the exhaust mechanism on the structure of the first sidewall is reduced. This reduces the impact of the exhaust mechanism on the support and load-bearing capacity of the first compartment wall, which is beneficial to improving the stress condition of the energy storage device and enhancing its reliability.

[0008] According to some embodiments of this application, the energy storage device further includes a second chamber and a heat exchange component. The second chamber is used to house the heat exchange component and is connected to the upper side of the first chamber. The first chamber can communicate with the second chamber through a first exhaust mechanism. The second chamber is provided with a first vent and a second vent. The heat exchange component includes a radiator and a fan. The radiator is disposed in the second chamber. The air inlet of the fan is connected to the second chamber, and the air outlet of the fan is connected to the second vent.

[0009] Through the above structure, in the state that the heat sink exchanges heat with the external environment, the fan can accelerate the speed of air in the second warehouse body to the outside, improve the flow rate of air around the heat sink, and improve the heat exchange effect of the heat sink; in the state that the smoke, high-temperature gas, flammable and explosive gas and other substances in the first warehouse body are discharged to the second warehouse body through the exhaust mechanism, the fan can accelerate the speed of air in the second warehouse body to the outside, quickly discharge the smoke, high-temperature gas, flammable and explosive gas and other substances to the outside, which is beneficial to reduce the possibility of fire in the energy storage device.

[0010] According to the energy storage device provided by some embodiments of the present application, the energy storage device further comprises a heat management pipeline, which communicates the battery device with the heat sink, so that the heat exchange medium can circulate between the heat sink and the battery device.

[0011] According to the energy storage device provided by some embodiments of the present application, the energy storage device further comprises a third warehouse body, which contains the battery device, and is connected to the lower side of the first warehouse body. The third warehouse body comprises a third top wall, which is provided with a third exhaust mechanism. The third exhaust mechanism can communicate the inside of the third warehouse body with the inside of the first warehouse body, so that the smoke, high-temperature gas, flammable and explosive gas and other substances in the third warehouse body can be discharged to the first warehouse body through the third exhaust mechanism, so that the concentration of the smoke, high-temperature gas, flammable and explosive gas and other substances in the third warehouse body is reduced, which is beneficial to reduce the possibility of fire in the third warehouse body.

[0012] According to the energy storage device provided by some embodiments of the present application, the first warehouse body further comprises a first bottom wall opposite to the first top wall, which is connected to the first side wall. The first bottom wall is provided with a first air vent. In the vertical direction, the first air vent at least partially overlaps with the third exhaust mechanism, so that the smoke, high-temperature gas, flammable and explosive gas and other substances discharged from the third exhaust mechanism in the third warehouse body can enter the first warehouse body through the first air vent.

[0013] According to the energy storage device provided by some embodiments of the present application, in the vertical direction, the projection of the third exhaust mechanism is located within the projection range of the first air vent, so that when the third warehouse body is connected to the lower side of the first warehouse body, the third exhaust mechanism can be inserted into the first warehouse body through the first air vent, which not only helps to improve the smoothness of the exhaust of the third exhaust mechanism, but also helps to reduce the possibility of interference when the third warehouse body is connected to the lower side of the first warehouse body.

[0014] According to the energy storage device provided by some embodiments of the present application, the first container body is provided with at least two, and the third container body is located on the lower side of the at least two first container bodies; in the vertical direction, the exhaust mechanism of the lower first container body in the adjacent two first container bodies at least partially coincides with the first air inlet of the upper first container body, so that the smoke, high-temperature gas, flammable and explosive gas and other substances discharged from the exhaust mechanism of the lower first container body can enter the upper first container body through the first air inlet.

[0015] According to the energy storage device provided by some embodiments of the present application, in the vertical direction, the projection of the exhaust mechanism of the lower first container body in the adjacent two first container bodies is located in the projection range of the first air inlet of the upper first container body, which is beneficial to improve the smoothness of the exhaust of the first container body to the adjacent first container body through the exhaust mechanism.

[0016] According to the energy storage device provided by some embodiments of the present application, at least part of the exhaust mechanism of the lower first container body in the adjacent two first container bodies extends into the upper first container body from the first air inlet, which not only can reduce the possibility of interference of the first container body when stacked on another first container body, but also is beneficial to improve the smoothness of the exhaust of the exhaust mechanism into the first container body.

[0017] According to the energy storage device provided by some embodiments of the present application, the second container body is provided with a blocking piece for opening and closing the first ventilation opening. When the first exhaust mechanism communicates the first container body with the second container body, the blocking piece closes the first ventilation opening, so that the smoke, high-temperature gas, flammable and explosive gas and other substances entering the second container body from the first container body can be better discharged to the outside through the second ventilation opening under the action of the fan; when the first exhaust mechanism does not communicate the first container body with the second container body, the blocking piece opens the first ventilation opening, so that the outside fresh air can enter the second container body through the first ventilation opening under the action of the fan, and the heat discharged from the heat sink is discharged to the outside through the second ventilation opening.

[0018] According to the energy storage device provided by some embodiments of the present application, in the vertical direction, the projection of the first ventilation opening is separated from the projection of the first exhaust mechanism, so that when the rain from the outside enters the second container body from the first ventilation opening, it is not easy to fall on the first exhaust mechanism, which is beneficial to reduce the possibility of rain entering the first container body from the first exhaust mechanism.

[0019] According to the energy storage device provided by some embodiments of the present application, in the vertical direction, the projection of the second ventilation opening is separated from the projection of the first exhaust mechanism, so that when the rain from the outside enters the second container body from the second ventilation opening, it is not easy to fall on the first exhaust mechanism, which is beneficial to reduce the possibility of rain entering the first container body from the first exhaust mechanism.

[0020] According to the energy storage device provided by some embodiments of the present application, the first vent and the second vent are arranged on the two sides of the heat sink respectively, so that the external fresh air entering the second storage body from the first vent is discharged from the second vent after flowing through the heat sink, which is beneficial to improve the heat exchange effect of the heat sink.

[0021] According to the energy storage device provided by some embodiments of the present application, the second storage body comprises a second top wall and a second side wall connected with each other, the second vent is arranged on the second top wall and / or the second side wall, and the fan is arranged in the second storage body and at the second vent, so that the fan can smoothly discharge the gas in the second storage body to the outside through the second vent.

[0022] According to the energy storage device provided by some embodiments of the present application, the second storage body comprises a second top wall and a second side wall connected with each other, the second vent is arranged on the second top wall and / or the second side wall, and the fan is arranged at the second vent, at least part of the fan extends out of the second storage body, so that the fan can smoothly discharge the gas in the second storage body to the outside of the second storage body.

[0023] According to the energy storage device provided by some embodiments of the present application, the first vent and the second vent are arranged on the second side wall respectively, and the first vent and the second vent are arranged on the two sides of the heat sink respectively, which not only can reduce the possibility of external rainwater entering the second storage body from the first top wall, but also can make the external fresh air entering the second storage body from the first vent be discharged from the second vent after flowing through the heat sink, which is beneficial to improve the heat exchange effect of the heat sink.

[0024] According to the energy storage device provided by some embodiments of the present application, the energy storage device further comprises an electrical component and a fourth storage body, the electrical component is arranged in the fourth storage body and is electrically connected with the battery device, and the electrical component can be protected by the fourth storage body.

[0025] According to the energy storage device provided by some embodiments of the present application, in the vertical direction, the fourth storage body is arranged between the first storage body and the second storage body, so that the fourth storage body is closer to the first storage body, and the smoke, high-temperature gas, flammable and explosive gas and other substances in the fourth storage body can more easily enter the first storage body and be discharged to the external air.

[0026] According to the energy storage device provided by some embodiments of the present application, the energy storage device further comprises a fire-fighting component, the fire-fighting component comprises a tank and a spraying member in communication with each other, the tank is arranged in the second storage body, and the spraying member is arranged in the first storage body. By arranging the tank in the second storage body, it is beneficial to reduce the occupation of the internal space of the first storage body by the fire-fighting component, and it is beneficial to improve the energy density of the first storage body. The tank and the spraying member are connected by a pipeline, and the spraying member is arranged in the first storage body, so that the fire extinguishing medium in the tank can be sprayed on the electrical device through the spraying member.

[0027] According to the energy storage device provided by some embodiments of the present application, the energy storage device further comprises a power conversion device, which is arranged in the second storage body and electrically connected with the battery device, so as to reduce the occupation of the internal space of the first storage body and improve the energy density of the first storage body.

[0028] According to the energy storage device provided by some embodiments of the present application, the energy storage device further comprises a power conversion device, which is arranged in the first storage body and electrically connected with the battery device, so that the power conversion device can be transferred in the first storage body together with the battery device, thereby facilitating the installation of the power conversion device in the energy storage device.

[0029] According to the energy storage device provided by some embodiments of the present application, the first exhaust mechanism comprises a first exhaust port arranged on the first top wall and a first blocking piece covering the first exhaust port, and the first blocking piece can be switched between a first state and a second state; in the first state, the first blocking piece closes the first exhaust port, and in the second state, the first blocking piece opens the first exhaust port. By arranging the first exhaust port on the first top wall, the smoke, high-temperature gas, flammable and explosive gas and other substances in the first storage body can be discharged to the outside through the first exhaust port, so that the smoke, high-temperature gas, flammable and explosive gas and other substances in the first storage body can be smoothly discharged to the outside or other storage bodies.

[0030] According to the energy storage device provided by some embodiments of the present application, the first exhaust mechanism further comprises a water blocking structure connected to the first top wall and located on the upper side of the first top wall, and the water blocking structure surrounds the first exhaust port to reduce the water accumulation into the first exhaust port.

[0031] According to the energy storage device provided by some embodiments of the present application, the water blocking structure comprises a blocking strip connected to the first top wall and arranged around the first exhaust port. By arranging the water blocking structure to comprise the blocking strip, the material of the water blocking structure can be saved, and the cost of the water blocking structure can be reduced.

[0032] According to the energy storage device provided by some embodiments of the present application, a plurality of blocking strips are arranged, and the plurality of blocking strips are connected in sequence and arranged around the first exhaust port, so that the plurality of blocking strips can be connected to form a water blocking structure surrounding the first exhaust port, thereby reducing the possibility of water accumulation outside the first exhaust port entering the first exhaust port.

[0033] According to the energy storage device provided by some embodiments of the present application, the adjacent two blocking strips are glued or welded, thereby reducing the possibility of gaps between the adjacent two blocking strips and reducing the possibility of water seepage, and the water blocking ability of the water blocking structure formed by the blocking strips can be improved.

[0034] According to the energy storage device provided by some embodiments of the present application, the water blocking structure and the first top wall are formed in an integral structure.

[0035] According to the energy storage device provided by some embodiments of the present application, the water retaining structure is glued or welded on the first top wall, which reduces the possibility of a gap between the water retaining structure and the first top wall and reduces the possibility of water seepage, thereby improving the water retaining capability of the water retaining structure formed by the baffle.

[0036] According to the energy storage device provided by some embodiments of the present application, the upper side of the first top wall is provided with a drainage groove, and the drainage groove is communicated with the outer wall surface of the first side wall. By providing the drainage groove on the upper side of the first top wall and communicating the drainage groove with the outer wall surface of the first side wall, the accumulated water on the upper side of the first top wall can flow into the drainage groove and flow along the drainage groove to the outer wall surface of the first side wall and then flow down from the first storage body.

[0037] According to the energy storage device provided by some embodiments of the present application, the second exhaust port is arranged on the first side wall, the second exhaust port can communicate the inside of the first storage body with the outside, the second exhaust port cover is provided with a second plugging member, the second plugging member can be switched between a first state and a second state; in the first state, the second plugging member closes the second exhaust port, in the second state, the second plugging member opens the second exhaust port, so that the smoke, high-temperature gas, flammable and explosive gas and other substances in the first storage body can also be discharged to the outside through the second exhaust port, thereby improving the discharge capability of the first storage body for the smoke, high-temperature gas, flammable and explosive gas and other substances.

[0038] In a second aspect, some embodiments of the present application further provide an energy storage system, which comprises a power conversion device and the energy storage device provided by any of the technical solutions described above, and the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0039] According to the energy storage system provided by some embodiments of the present application, the energy storage device is provided with a plurality of energy storage devices, and the plurality of energy storage devices are connected in parallel.

[0040] The technical solutions provided by the embodiments of the present application at least have the following beneficial effects:

[0041] The present application provides an energy storage device, which comprises a first storage body and a battery device, the first storage body comprises a first top wall and a first side wall connected to each other, the first top wall is provided with a first exhaust mechanism, the first exhaust mechanism can communicate the inside of the first storage body with the outside, and the battery device is accommodated in the first storage body. Since the first side wall mainly plays a supporting and load bearing role in the first storage body, the first exhaust mechanism for communicating the inside of the first storage body with the outside is arranged on the first top wall instead of being arranged on the first side wall, which reduces the influence of the arrangement of the first exhaust mechanism on the structure of the first side wall, thereby reducing the influence of the arrangement of the first exhaust mechanism on the supporting role and load bearing capability of the wall of the first storage body, and improving the stress condition of the energy storage device and the reliability of the energy storage device. BRIEF DESCRIPTION OF DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not intended to be a limitation on the scope of the application. Moreover, in the drawings, like reference numerals refer to similar components, and:

[0043] FIG. 1 is a structural schematic diagram of an energy storage device according to some embodiments of the present application;

[0044] FIG. 2 is a partial internal structural schematic diagram of an energy storage device according to some embodiments of the present application;

[0045] FIG. 3 is a partial internal structural schematic diagram of a first bin body of an energy storage device according to some embodiments of the present application;

[0046] FIG. 4 is a structural schematic diagram of a second bin body of an energy storage device according to some embodiments of the present application;

[0047] FIG. 5 is a partial internal structural schematic diagram of a second bin body of an energy storage device according to some embodiments of the present application;

[0048] FIG. 6 is a structural schematic diagram of a third bin body of an energy storage device according to some embodiments of the present application;

[0049] FIG. 7 is a perspective view of a partial structure of an energy storage device according to some embodiments of the present application;

[0050] FIG. 8 is a partial internal structural schematic diagram of a fourth bin body of an energy storage device according to some embodiments of the present application.

[0051] In the drawings: 1, first bin body; 11, first top wall; 111, drainage groove; 12, first side wall; 121, second exhaust port; 122, second blocking member; 13, first exhaust mechanism; 131, first exhaust port; 132, first blocking member; 133, water blocking structure; 1331, blocking strip; 14, first bottom wall; 141, first air vent; 15, spraying member; 2, second bin body; 21, first ventilation port; 22, second ventilation port; 23, blocking member; 24, second top wall; 25, second side wall; 26, heat sink; 27, fan; 28, tank body; 29, power conversion device; 3, third bin body; 31, third top wall; 32, third exhaust mechanism; 4, fourth bin body; 41, fourth exhaust mechanism; 42, fourth air vent; 5, thermal management pipeline; 101, battery device; 104, electrical component. DETAILED DESCRIPTION

[0052] The technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, but cannot be used to limit the protection scope of the present application.

[0053] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should be understood as the general meaning understood by the skilled in the art to which the embodiments of the present application belong.

[0054] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0055] In addition, the technical terms “first”, “second” and the like are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of “multiple” is two or more, unless otherwise explicitly specified and limited.

[0056] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms “mounting”, “connection”, “connecting”, “fixing” and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature “on” or “under” the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature “above”, “over” and “on” the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature “below”, “under” and “under” the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0058] At present, from the development of market situation, the application of battery apparatus is more and more extensive. The battery apparatus is not only applied to the energy storage power supply system such as hydroelectric power station, thermal power station, wind power station and solar power station, but also widely applied to the energy storage device such as energy storage container or energy storage cabinet. With the continuous expansion of the application field of battery apparatus, the requirement for the reliability of battery apparatus is also continuously improved.

[0059] The battery apparatus mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel or in mixed connection through a busbar component.

[0060] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells.

[0061] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by binding a plurality of battery cells with a cable tie.

[0062] In some embodiments, the battery apparatus can include one or more battery packs, and the battery pack can include one or more battery cell assemblies. As an example, the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body, for example, by a fixing manner. As another example, the battery apparatus includes a plurality of battery packs, and the plurality of battery packs can be connected in series, in parallel and in mixed connection.

[0063] As an example, the box body can include a first box body and a second box body. The first box body and the second box body are buckled so that a closed space is formed inside the box body to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box body can be a top cover or a bottom plate.

[0064] As an example, the box body can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0065] In some embodiments, the plurality of battery packs included in the battery device can constitute one or more battery clusters, so that the energy storage device provided by the embodiments of the present application includes one or more battery clusters to improve the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery packs, and the plurality of battery packs are connected in series through the busbar component to improve the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters can be connected in series, in parallel, or in a mixed manner.

[0066] The energy storage device can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems, or temporary power supply systems, etc. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during the low electricity consumption period, and provide electrical energy for related users or electrical equipment during the electricity consumption peak period. The energy storage system provided by the embodiments of the present application can be any power system that needs to use an energy storage device.

[0067] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0068] In some embodiments, the energy storage device can include a cabinet body and one or more battery clusters, and the battery clusters are accommodated in the cabinet body.

[0069] In some embodiments, the energy storage device can include a thermal management module, a master control module, a general control module, a power distribution module, and a fire-fighting module, etc.

[0070] As an example, the thermal management module can include a liquid cooling unit, which provides cooling liquid for adjusting the temperature of the battery monomer to each battery device through the pipeline.

[0071] As an example, the master control module can serve as a battery management unit of the battery cluster, for monitoring and managing the battery cluster. The master control module can monitor the current, voltage, power, or temperature, etc. of the battery cluster. For example, the charging and discharging current, voltage, etc. of the battery cluster can be controlled. The master control module includes a slave battery management unit (SBMU), a fusion switch, and other modules.

[0072] As an example, the general control module can be used as a battery management unit of the energy storage device to monitor and manage the energy storage device. The general control module can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage device. For example, the charging and discharging current, voltage, etc. of the energy storage device can be controlled. As an example, the general control module includes an insulation monitoring module IMM (Insulation Monitoring Module, IMM), a master battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (EtherNet, ETH), and an optical fiber conversion module.

[0073] As an example, the fire control system includes a control panel, a detector, an alarm device, etc. to detect, alarm, or extinguish the energy storage system.

[0074] As an example, the power distribution device can be used to distribute power to the energy storage device power module.

[0075] At present, exhaust mechanisms such as exhaust ports are usually provided on the side wall of the energy storage device. The provision of these exhaust mechanisms usually destroys the original side wall structure. Since the load in the energy storage device is mainly transmitted downward to the ground through the side wall, the provision of the exhaust mechanism on the side wall will weaken the supporting effect and carrying capacity of the side wall, thereby reducing the reliability of the energy storage device.

[0076] In order to improve the reliability of the energy storage device, some embodiments of the present application provide an energy storage device, which comprises a first warehouse body and a battery device, the first warehouse body comprises a first top wall and a first side wall connected to each other, the first top wall is provided with a first exhaust mechanism, the first exhaust mechanism can communicate the inside of the first warehouse body with the outside, and the battery device is contained in the first warehouse body. Since the first side wall mainly plays a supporting and carrying load role in the first warehouse body, the first exhaust mechanism for communicating the inside of the first warehouse body with the outside is arranged on the first top wall instead of the first side wall, which reduces the influence of the first exhaust mechanism on the structure of the first side wall, thereby reducing the influence of the first exhaust mechanism on the supporting effect and carrying capacity of the wall of the first warehouse body, which is beneficial to improve the stress condition of the energy storage device and improve the reliability of the energy storage device.

[0077] The energy storage device described in the embodiments of the present application can be an energy storage container or an energy storage cabinet, and the energy storage device described in the embodiments of the present application can be applicable to an energy storage system, which can include one or more energy storage devices and a power converter system (PCS) connected between a power generation device and the energy storage device. The power generation device is used to generate electric energy, and the electric energy generated by the power generation device can be stored in the energy storage device through the power converter system. As an example, the power generation device can be a solar panel, a hydroelectric power generation device, a fire power generation device, a wind power generation device, etc.

[0078] Some embodiments of the present application provide an energy storage device as shown in FIG. 1, which includes a first bin body 1 and a battery device 101, as shown in FIG. 2. Referring to FIG. 3, the first bin body 1 includes a first top wall 11 and a first side wall 12 connected to each other, the first top wall 11 is provided with a first exhaust mechanism 13 capable of communicating the inside of the first bin body 1 with the outside; the first bin body 1 contains the battery device 101.

[0079] The first bin body 1 can be a bin structure capable of forming a hollow structure in the energy storage device, and the hollow structure can serve as a containing space for containing the battery device 101 in the energy storage device, and the battery device 101 can be protected by the first bin body 1.

[0080] For example, the first bin body 1 containing the battery device 101 can be that the first bin body 1 and other bin bodies jointly contain the battery device 101, part of the battery device 101 in the energy storage device is contained in the first bin body 1, and the other part of the battery device 101 is contained in other bin bodies.

[0081] The first top wall 11 and the first side wall 12 can be wall structures in the first bin body 1, which are used to enclose a containing space, and other devices such as the battery device 101 in the energy storage device can be connected to the first top wall 11 or the first side wall 12, so that the load of these devices can be transmitted to the ground or a bearing platform through the first side wall 12. For example, the first bin body 1 can also be provided with a battery device 101 connection wire harness.

[0082] The first top wall 11 can be a wall structure located at the top side of the first bin body 1, which can be arranged in a horizontal direction or in a direction at an angle less than 90° with the horizontal direction. The first side wall 12 can enclose a hollow structure with open ends, and the first top wall 11 is connected to the top end of the hollow structure.

[0083] The first exhaust mechanism 13 can be a mechanism capable of communicating the accommodation space inside the first bin body 1 with the outside. The outside refers to the outside relative to the accommodation space inside the first bin body 1, which can be the outside environment outside the energy storage device, or can be other bin bodies in the energy storage device other than the first bin body 1.

[0084] The battery cell assembly in the battery device 101 will generate heat during operation, and as the temperature rises, there is a possibility of generating smoke, high-temperature gas, flammable and explosive gas and other substances to cause thermal runaway. Since the first exhaust mechanism 13 can communicate the inside of the first bin body 1 with the outside, the smoke, high-temperature gas, flammable and explosive gas and other substances inside the first bin body 1 can be discharged to the outside of the first bin body 1 through the first exhaust mechanism 13, which is beneficial to reduce the possibility of fire inside the first bin body 1.

[0085] Exemplarily, the battery device 101 in the first bin body 1 can be provided with a plurality of battery devices 101, and the plurality of battery devices 101 can be connected in series through the busbar component to form a battery cluster.

[0086] In some embodiments, the energy storage device further comprises a second bin body 2 and a heat exchange assembly, the second bin body 2 is used to accommodate the heat exchange assembly, the second bin body 2 is connected to the upper side of the first bin body 1, the first bin body 1 can communicate with the second bin body 2 through the first exhaust mechanism 13, referring to FIG. 4, the second bin body 2 is provided with a first ventilation opening 21 and a second ventilation opening 22, referring to FIG. 5, the heat exchange assembly comprises a radiator and a fan, the radiator is arranged in the second bin body 2, the air inlet of the fan communicates with the second bin body 2, and the air outlet of the fan communicates with the second ventilation opening 22.

[0087] The second bin body 2 can be a bin body structure capable of forming a hollow structure in the energy storage device, and the hollow structure can serve as an accommodation space for accommodating at least part of the components in the heat exchange assembly, which can be protected by the second bin body 2. The second bin body 2 is connected to the upper side of the first bin body 1, which means that the second bin body 2 is located on the upper side of the first bin body 1 and connected to the first bin body 1, so that the energy storage device composed of the first bin body 1 and the second bin body 2 presents an integral structure. Exemplarily, the second bin body 2 can be connected to the first bin body 1 by rivets, bolts, connecting pins and the like, or can be connected to the first bin body 1 by welding, bonding and the like. In some embodiments, the connection between the second bin body 2 and the first bin body 1 can be a detachable connection, so that the energy storage device can be modularly disassembled.

[0088] Exemplarily, when the second bin body 2 is connected to the upper side of the first bin body 1, the first top wall 11 of the first bin body 1 can serve as the bottom wall of the second bin body 2, and play a role of bearing and mounting components such as the heat exchange assembly arranged in the second bin body 2. That is, when the second bin body 2 is connected to the upper side of the first bin body 1, the components such as the heat exchange assembly in the second bin body 2 can be connected to the upper surface of the first top wall 11.

[0089] The first bin body 1 can be communicated with the second bin body 2 through the first exhaust mechanism 13, so that the smoke, high-temperature gas, flammable and explosive gas and other substances in the first bin body 1 can be discharged to the second bin body 2 through the first exhaust mechanism 13, which is conducive to reducing the concentration of the smoke, high-temperature gas, flammable and explosive gas and other substances in the first bin body 1.

[0090] The second vent 22 can be a window opened on the second bin body 2 for air outlet, which can communicate the inside of the second bin body 2 with the outside. The first vent 21 can be a window opened on the second bin body 2 for air inlet, which can communicate the inside of the second bin body 2 with the outside. When the smoke, high-temperature gas, flammable and explosive gas and other substances in the first bin body 1 enter the second bin body 2, they can be directly discharged to the outside through the second vent 22, or mixed with the fresh air entering from the first vent 21 and then discharged to the outside through the second vent 22.

[0091] The heat exchange assembly can be an assembly for heat management of the battery device 101, which can be used for heating or cooling the battery device 101, and can make the battery device 101 in a suitable temperature environment, which is conducive to making the battery device 101 in a good working state.

[0092] The radiator can be a heat exchanger arranged in the second bin body 2, which serves as a device for heat exchange with the outside in the heat exchange assembly. The heat absorbed by the heat exchange medium in the heat exchange assembly from the battery device 101 can be dissipated to the outside environment through the radiator. The outside air entering the second bin body 2 from the first vent 21 can be discharged to the outside through the second vent 22 after heat exchange with the radiator.

[0093] The fan can be a device for accelerating air flow, and the air outlet of the fan is in communication with the second vent 22 for accelerating the speed of air in the second chamber 2 to the outside. In the state of heat exchange between the heat sink and the external environment, the fan can accelerate the speed of air in the second chamber 2 to the outside, thereby increasing the flow rate of air around the heat sink and improving the heat exchange effect of the heat sink. In the state of smoke, high-temperature gas, flammable and explosive gas and the like in the first chamber 1 being discharged to the second chamber 2 through the first exhaust mechanism 13, the fan can accelerate the speed of air in the second chamber 2 to the outside, thereby quickly discharging the smoke, high-temperature gas, flammable and explosive gas and the like to the outside, which is conducive to reducing the possibility of fire in the energy storage device.

[0094] Exemplarily, the fan can be located inside the second chamber 2 or outside the second chamber 2.

[0095] In some embodiments, the energy storage device further comprises a heat management pipeline in communication with the battery device 101 and the heat sink.

[0096] The second heat exchanger is arranged in the battery device 101 and exchanges heat with the battery cells inside. The heat management pipeline can be a pipeline for communicating the heat sink and the second heat exchanger, which enables the heat exchange medium to circulate between the heat sink and the second heat exchanger.

[0097] Exemplarily, the heat management pipeline in communication with the heat sink can extend through the first top wall 11 into the first chamber 1 in the vertical direction, thereby communicating the heat sink and the battery device 101, and enabling the heat management pipeline to be protected in the first chamber 1 and the second chamber 2, so that the heat management pipeline is not easily damaged due to being bumped. Alternatively, the heat management pipeline in communication with the heat sink can extend through the second side wall 25 to the outside of the second chamber 2, and then extend through the first side wall 12 into the first chamber 1 after reaching a preset position, thereby communicating the heat sink and the battery device 101, and facilitating the disassembly and maintenance of the heat management pipeline, which is conducive to improving the convenience of disassembly and maintenance of the energy storage device.

[0098] In some embodiments, the energy storage device further comprises a third chamber 3 containing the battery device 101, and the third chamber 3 is connected to the lower side of the first chamber 1. The third chamber 3 comprises a third top wall 31, and the third top wall 31 is provided with a third exhaust mechanism 32 capable of communicating the interior of the third chamber 3 with the interior of the first chamber 1, as shown in FIGS. 6 and 7.

[0099] The third chamber 3 can be a chamber structure capable of forming a hollow structure in the energy storage device, and the hollow structure can serve as a containing space for containing the battery device 101 in the energy storage device, and the battery device 101 can be protected by the third chamber 3.

[0100] The third bin body 3 is connected to the lower side of the first bin body 1. The third bin body 3 can be located on the lower side of the first bin body 1, and the third bin body 3 is connected to the first bin body 1. The connection mode of the third bin body 3 and the first bin body 1 can be the same as or different from the connection mode of the second bin body 2 and the first bin body 1.

[0101] In some embodiments, the third bin body 3 connected to the lower side of the first bin body 1 can be arranged on the ground or a bearing platform. The third bin body 3 can be connected to the first bin body 1 by rivets, bolts, connecting pins, etc., or can be connected to the first bin body 1 by welding, bonding, etc. In some embodiments, the connection between the third bin body 3 and the first bin body 1 can be detachable, so that the energy storage device can be modularly disassembled. The third bin body 3 can be connected to the ground or a bearing platform by rivets, bolts, etc., or can be connected to the ground or a bearing platform by bonding, etc. In some embodiments, the connection between the third bin body 3 and the ground or the bearing platform can be detachable, so that the energy storage device can be easily disassembled.

[0102] The third top wall 31 can be a wall structure located on the top side of the third bin body 3, which can be arranged in a horizontal direction or at an angle less than 90° with the horizontal direction. In some embodiments, the third bin body 3 further includes a third side wall, which can form a hollow structure with both ends open, and the third top wall 31 is connected to the top end of the hollow structure.

[0103] The third exhaust mechanism 32 can be a mechanism that can communicate the internal space of the third bin body 3 with the outside. The outside refers to the outside relative to the internal space of the third bin body 3, which can be the outside environment outside the energy storage device, or other bin bodies in the energy storage device except the third bin body 3.

[0104] By providing the third exhaust mechanism 32 on the third top wall 31, the third exhaust mechanism 32 can communicate the inside of the third bin body 3 with the inside of the first bin body 1, so that the smoke, high-temperature gas, flammable and explosive gas, etc. in the third bin body 3 can be discharged to the first bin body 1 through the third exhaust mechanism 32, so that the concentration of smoke, high-temperature gas, flammable and explosive gas, etc. in the third bin body 3 is reduced, which is beneficial to reduce the possibility of fire in the third bin body 3.

[0105] In some embodiments, the first bin body 1 further includes a first bottom wall 14 opposite to the first top wall 11, the first bottom wall 14 is connected to the first side wall 12, and the first bottom wall 14 is provided with a first air vent 141. In the vertical direction, the first air vent 141 coincides with at least part of the third exhaust mechanism 32.

[0106] The first bottom wall 14 can be a wall structure arranged opposite to the first top wall 11 in the first bin body 1, and connected to the bottom end of the hollow structure surrounded by the first side wall 12.

[0107] The first vent 141 can be a window opened on the first bottom wall 14, and used for allowing the smoke, high-temperature gas, flammable and explosive gas and other substances discharged by the third exhaust mechanism 32 to enter the first bin body 1. By making the first vent 141 at least partially coincide with at least part of the third exhaust mechanism 32 in the vertical direction, when the third bin body 3 is arranged at the lower side of the first bin body 1, the third exhaust mechanism 32 can be in communication with the first vent 141 in the vertical direction, so that the smoke, high-temperature gas, flammable and explosive gas and other substances discharged by the third exhaust mechanism 32 in the third bin body 3 can enter the first bin body 1 through the first vent 141.

[0108] In some embodiments, the projection of the third exhaust mechanism 32 in the vertical direction is located within the projection range of the first vent 141.

[0109] By making the projection of the third exhaust mechanism 32 in the vertical direction within the projection range of the first vent 141 in the vertical direction, when the third bin body 3 is connected to the lower side of the first bin body 1, the third exhaust mechanism 32 can be inserted into the first bin body 1 through the first vent 141, which not only facilitates the smoothness of the exhaust of the third exhaust mechanism 32, but also reduces the possibility of interference when the third bin body 3 is connected to the lower side of the first bin body 1.

[0110] In some embodiments, the first bin body 1 is provided with at least two, and the third bin body 3 is located at the lower side of the at least two first bin bodies 1; along the vertical direction, the first exhaust mechanism 13 of the lower first bin body 1 in the adjacent two first bin bodies 1 at least partially coincides with the first vent 141 of the upper first bin body 1.

[0111] The first bin body 1 is provided with at least two, which can be that the at least two first bin bodies 1 are arranged in the vertical direction. The third bin body 3 is located at the lower side of the at least two first bin bodies 1, which can mean that the at least two first bin bodies 1 form a first bin body 1 assembly, and the third bin body 3 is located at the lower side of the first bin body 1 assembly, so that the third bin body 3 can be arranged on the ground or a carrying platform.

[0112] By making the first exhaust mechanism 13 of the lower first bin body 1 in the adjacent two first bin bodies 1 at least partially coincide with the first vent 141 of the upper first bin body 1 in the vertical direction, the smoke, high-temperature gas, flammable and explosive gas and other substances discharged by the first exhaust mechanism 13 of the lower first bin body 1 in the adjacent two first bin bodies 1 can enter the upper first bin body 1 through the first vent 141.

[0113] In some embodiments, the first container body 1 is provided with a first bottom wall 14, and the first top wall 11 and the first side wall 12 enclose a receiving space with an opening at one end. When the first container bodies 1 are arranged in the vertical direction, the opening of the upper first container body 1 is covered by the first top wall 11 of the lower first container body 1, and the first top wall 11 of the lower first container body 1 serves as the bottom wall of the upper first container body 1 and bears and mounts components such as the battery device 101 arranged in the first container body 1.

[0114] In some embodiments, in the vertical direction, the projection of the first exhaust mechanism 13 of the lower first container body 1 in the adjacent two first container bodies 1 is located within the projection range of the first air vent 141 of the upper first container body 1.

[0115] By locating the projection of the first exhaust mechanism 13 of the lower first container body 1 in the adjacent two first container bodies 1 within the projection range of the first air vent 141 of the upper first container body 1 in the vertical direction, the smoothness of the first container body 1 exhausting to the adjacent first container body 1 through the first exhaust mechanism 13 is improved.

[0116] In some embodiments, at least part of the first exhaust mechanism 13 of the lower first container body 1 in the adjacent two first container bodies 1 extends into the upper first container body 1 from the first air vent 141.

[0117] By extending at least part of the first exhaust mechanism 13 of the lower first container body 1 in the adjacent two first container bodies 1 into the upper first container body 1 from the first air vent 141, not only the possibility of interference of the first container body 1 when stacked on another first container body 1 is reduced, but also the smoothness of the first exhaust mechanism 13 exhausting to the first container body 1 is improved.

[0118] In some embodiments, the second container body 2 is provided with a blocking piece 23 for opening and closing the first ventilation opening 21.

[0119] The blocking piece 23 can be a device for blocking the first ventilation opening 21, which can realize the opening or closing of the first ventilation opening 21. By providing the blocking piece 23 on the second container body 2, the blocking piece 23 opens or closes the first ventilation opening 21. When the first exhaust mechanism 13 communicates the first container body 1 with the second container body 2, the blocking piece 23 closes the first ventilation opening 21, and the smoke, high-temperature gas, flammable and explosive gas and other substances entering the second container body 2 from the first container body 1 can be better discharged to the outside through the second ventilation opening 22 under the action of the fan; when the first exhaust mechanism 13 does not communicate the first container body 1 with the second container body 2, the blocking piece 23 opens the first ventilation opening 21, and under the action of the fan, the outside fresh air can enter the second container body 2 through the first ventilation opening 21, and the heat dissipated by the heat sink is discharged to the outside through the second ventilation opening 22.

[0120] In some embodiments, a projection of the first vent 21 in the vertical direction is separated from a projection of the first exhaust mechanism 13 in the vertical direction.

[0121] By separating the projection of the first vent 21 in the vertical direction from the projection of the first exhaust mechanism 13 in the vertical direction, it is difficult for rainwater from the outside to fall on the first exhaust mechanism 13 when entering the second chamber 2 through the first vent 21, which is conducive to reducing the possibility of rainwater entering the first chamber 1 from the first exhaust mechanism 13.

[0122] In some embodiments, a projection of the second vent 22 in the vertical direction is separated from a projection of the first exhaust mechanism 13 in the vertical direction.

[0123] By separating the projection of the second vent 22 in the vertical direction from the projection of the first exhaust mechanism 13 in the vertical direction, it is difficult for rainwater from the outside to fall on the first exhaust mechanism 13 when entering the second chamber 2 through the second vent 22, which is conducive to reducing the possibility of rainwater entering the first chamber 1 from the first exhaust mechanism 13.

[0124] In some embodiments, the first vent 21 and the second vent 22 are respectively arranged on both sides of the heat sink.

[0125] By arranging the first vent 21 and the second vent 22 on both sides of the heat sink, the outside fresh air entering the second chamber 2 through the first vent 21 will be discharged from the second vent 22 after flowing through the heat sink, which is conducive to improving the heat exchange effect of the heat sink.

[0126] In some embodiments, the second chamber 2 includes a second top wall 24 and a second side wall 25 connected to each other, the second vent 22 is arranged on the second top wall 24 and / or the second side wall 25, and the fan is arranged in the second chamber 2 and at the second vent 22.

[0127] The second top wall 24 and the second side wall 25 can be wall structures in the second chamber 2 for enclosing a containing space for containing heat exchange components, and other devices such as heat exchange components can be connected to the second top wall 24 and the second side wall 25. The load of these devices can be transmitted to the first side wall 12 through the second side wall 25 and then to the ground or a supporting platform. The second top wall 24 can be a wall structure at the top side of the second chamber 2, which can be arranged in a horizontal direction or in a direction at an angle less than 90° with the horizontal direction. The second side wall 25 can enclose a hollow structure with open ends, and the second top wall 24 is connected to the top end of the hollow structure.

[0128] The second vent 22 is arranged on the second top wall 24 and / or the second side wall 25, so that the gas in the second cavity 2 can be discharged to the outside through the second vent 22. The second vent 22 can be arranged on the second top wall 24, or arranged on the second side wall 25, or arranged on both the second top wall 24 and the second side wall 25.

[0129] The fan is arranged in the second cavity 2, and the outlet of the fan is communicated with the second vent 22, so that the fan can smoothly discharge the gas in the second cavity 2 to the outside through the second vent 22. The fan is arranged at the second vent 22, which means that the fan is connected to the wall where the second vent 22 is arranged, and the central axis of the outlet of the fan coincides with the central axis of the second vent 22, so that the gas in the second cavity 2 can be smoothly discharged under the action of the fan.

[0130] In some embodiments, the second cavity 2 comprises a second top wall 24 and a second side wall 25 connected to each other, the second vent 22 is arranged on the second top wall 24 and / or the second side wall 25, the fan is arranged at the second vent 22, and at least part of the fan extends out of the second cavity 2.

[0131] The second vent 22 is arranged on the second top wall 24 and / or the second side wall 25, which means that the second vent 22 is arranged on the second top wall 24, or arranged on the second side wall 25, or arranged on both the second top wall 24 and the second side wall 25.

[0132] At least part of the fan extends out of the second cavity 2 and the fan is arranged at the second vent 22, which means that the fan is connected to the wall where the second vent 22 is arranged, and part of the fan including the outlet extends out of the second cavity 2 from the second vent 22, part of the fan including the inlet is located in the second cavity 2, and the central axis of the inlet of the fan coincides with the central axis of the second vent 22, so that the fan can smoothly discharge the gas in the second cavity 2 to the outside of the second cavity 2; or the inlet of the fan is connected to the outer wall surface of the wall where the second vent 22 is arranged, the fan is located outside the second cavity 2, and the central axis of the inlet of the fan coincides with the central axis of the second vent 22, so that the fan can smoothly discharge the gas in the second cavity 2 to the outside of the second cavity 2.

[0133] In some embodiments, the first vent 21 and the second vent 22 are both arranged on the second side wall 25, and the first vent 21 and the second vent 22 are respectively arranged on the two sides of the heat sink.

[0134] By arranging the first vent 21 and the second vent 22 on the second side wall 25 and oppositely arranging the first vent 21 and the second vent 22 on both sides of the heat sink, not only can the possibility of rainwater entering the second storage body 2 from the first top wall 11 be reduced, but also the external fresh air entering the second storage body 2 from the first vent 21 will be discharged from the second vent 22 after flowing through the heat sink, which is conducive to improving the heat exchange effect of the heat sink.

[0135] In some embodiments, the energy storage device further comprises an electrical component 104 and a fourth storage body 4, the electrical component 104 is arranged in the fourth storage body 4 and electrically connected with the battery device 101.

[0136] The fourth storage body 4 can be a storage body structure capable of forming a hollow structure in the energy storage device, and the hollow structure can serve as a containing space for containing the electrical component 104, which can be protected by the fourth storage body 4. For example, the electrical component 104 can include energy storage converters, battery management systems, electric control switches, fire control controllers and other electrical components, which are electrically connected with the battery device 101, so that the energy storage device can work normally.

[0137] In some embodiments, the fourth storage body 4 is arranged between the first storage body 1 and the second storage body 2 in the vertical direction.

[0138] By arranging the fourth storage body 4 between the first storage body 1 and the second storage body 2, the fourth storage body 4 is closer to the first storage body 1, so that the smoke, high-temperature gas, flammable and explosive gas and other substances in the fourth storage body 4 can more easily enter the first storage body 1 and be discharged to the outside air.

[0139] For example, referring to FIG. 8, the fourth storage body 4 is provided with a fourth exhaust mechanism 41 capable of communicating the inside of the fourth storage body 4 with the second storage body 2, and the fourth storage body 4 is provided with a fourth vent 42 capable of communicating the inside of the fourth storage body 4 with the first storage body 1, so that the smoke, high-temperature gas, flammable and explosive gas and other substances in the first storage body 1 can be sequentially discharged to the outside through the fourth storage body 4 and the second storage body 2.

[0140] For example, the first exhaust mechanism 13, the second exhaust mechanism, the third exhaust mechanism 32 and the fourth exhaust mechanism 41 can have the same structure.

[0141] In some embodiments, the energy storage device further comprises a fire-fighting component, the fire-fighting component comprises a tank and a spraying member in communication with each other, the tank is arranged in the second storage body 2, and the spraying member is arranged in the first storage body 1.

[0142] The fire-fighting assembly can be an assembly used by the energy storage device to perform a fire-fighting function. The tank can be a container storing a fire extinguishing medium, and the spraying member can be a device for spraying the fire extinguishing medium. By arranging the tank in the second compartment 2, the fire-fighting assembly can be used to reduce the occupation of the internal space of the first compartment 1, thereby improving the energy density of the first compartment 1. The tank and the spraying member are connected by the pipeline, and the spraying member is arranged in the first compartment 1, so that the fire extinguishing medium in the tank can be sprayed on the electrical device through the spraying member.

[0143] In some embodiments, the energy storage device further comprises a power conversion device arranged in the second compartment 2 and electrically connected to the battery device 101.

[0144] By arranging the power conversion device electrically connected to the battery device 101 in the second compartment 2, the occupation of the internal space of the first compartment 1 can be reduced, thereby improving the energy density of the first compartment 1.

[0145] In some embodiments, a second exhaust port 121 is formed in the first side wall 12, the second exhaust port 121 can communicate the interior of the first compartment 1 with the outside, and a second sealing member 122 is arranged on the second exhaust port 121, the second sealing member 122 can be switched between a first state and a second state; in the first state, the second sealing member 122 closes the second exhaust port 121, and in the second state, the second sealing member 122 opens the second exhaust port 121.

[0146] The second exhaust port 121 can be a window formed in the first side wall 12, which is used to communicate the interior of the first compartment 1 with the outside. By forming the second exhaust port 121 in the first side wall 12, the smoke, high-temperature gas, flammable and explosive gas, and other substances in the first compartment 1 can also be discharged to the outside through the second exhaust port 121, thereby improving the discharge capacity of the first compartment 1 for smoke, high-temperature gas, flammable and explosive gas, and other substances.

[0147] The second sealing member 122 can be a device for closing or opening the second exhaust port 121. The second sealing member 122 can be switched between a first state and a second state, in the first state, the second sealing member 122 closes the second exhaust port 121, and in the second state, the second sealing member 122 opens the second exhaust port 121.

[0148] For example, the second sealing member 122 can be broken when the temperature, pressure, smoke concentration, and other parameters in the first compartment 1 reach a preset threshold, and the broken second sealing member 122 is in the second state, opening the second exhaust port 121; the unbroken second sealing member 122 is in the first state, closing the second exhaust port 121.

[0149] Exemplarily, the second blocking member 122 can act when the temperature, pressure, smoke concentration, etc. in the first bin body 1 reaches a preset threshold, and the second blocking member 122 in the second state after the action opens the second exhaust port 121; the second blocking member 122 in the first state before the action closes the second exhaust port 121. In some embodiments, the action of the second blocking member 122 can be that the second blocking member 122 slides away from covering the second exhaust port 121, or that the second blocking member 122 rotates away from covering the second exhaust port 121.

[0150] Exemplarily, the second blocking member 122 can be a waterproof and breathable structure, for example, the second blocking member 122 can be a porous mesh fiber plate, a high polymer plastic plate, a metal mesh plate, or other composite structure plate.

[0151] In some embodiments, the energy storage device further comprises a power conversion device, which is arranged in the first bin body 1 and electrically connected with the battery device 101.

[0152] By arranging the power conversion device electrically connected with the battery device 101 in the first bin body 1, the power conversion device can be transferred together with the battery device 101 in the first bin body 1, which facilitates the installation of the power conversion device in the energy storage device.

[0153] In some embodiments, the first exhaust mechanism 13 comprises a first exhaust port 131 opened in the first top wall 11 and a first blocking member 132 covering the first exhaust port 131, the first blocking member 132 being switchable between a first state and a second state; in the first state, the first blocking member 132 closes the first exhaust port 131, and in the second state, the first blocking member 132 opens the first exhaust port 131.

[0154] The first exhaust port 131 can be a window opened in the first top wall 11, which is used to communicate the inside of the first bin body 1 with the outside. By opening the first exhaust port 131 in the first top wall 11, the smoke, high-temperature gas, flammable and explosive gas, etc. in the first bin body 1 can be discharged to the outside through the first exhaust port 131, so that the smoke, high-temperature gas, flammable and explosive gas, etc. in the first bin body 1 can be smoothly discharged to the outside or other bin bodies.

[0155] The first blocking member 132 can be a device for closing or opening the first exhaust port 131. The first blocking member 132 is switchable between a first state and a second state, in the first state, the first blocking member 132 closes the first exhaust port 131, and in the second state, the first blocking member 132 opens the first exhaust port 131.

[0156] Exemplarily, the first blocking member 132 can rupture when the temperature, pressure, smoke concentration and the like in the first storage body 1 reach a preset threshold, and the ruptured first blocking member 132 is in the second state to open the second exhaust port 121; the unruptured first blocking member 132 is in the first state to close the second exhaust port 121.

[0157] Exemplarily, the first blocking member 132 can act when the temperature, pressure, smoke concentration and the like in the first storage body 1 reach a preset threshold, and the acted first blocking member 132 is in the second state to open the second exhaust port 121; the unacted first blocking member 132 is in the first state to close the first exhaust port 131. In some embodiments, the action of the first blocking member 132 can be that the first blocking member 132 slides away from covering the first exhaust port 131, or that the first blocking member 132 rotates away from covering the first exhaust port 131.

[0158] Exemplarily, the first blocking member 132 can be a waterproof and breathable structure, for example, the first blocking member 132 can be a porous mesh fiber plate, a high polymer plastic plate, a metal mesh plate or other composite structure plate.

[0159] In some embodiments, the first exhaust mechanism 13 further comprises a water blocking structure 133, the water blocking structure 133 is connected to the first top wall 11 and at least partially located on the upper side of the first top wall 11, and the water blocking structure 133 surrounds the outside of the first exhaust port 131.

[0160] The water blocking structure 133 can be a structure for blocking the water accumulated on the first top wall 11 to reduce the water accumulated into the first exhaust port 131.

[0161] The water blocking structure 133 is connected to the first top wall 11 and at least partially located on the upper side of the first top wall 11, which can mean that the water blocking structure 133 is connected to the upper side of the first top wall 11, or that the water blocking structure 133 is connected to the first top wall 11 and at least partially extends from the upper side of the first top wall 11. By connecting the water blocking structure 133 to the upper side of the first top wall 11 and surrounding the first exhaust port 131, the water accumulated on the upper side of the first top wall 11 is less likely to flow into the first exhaust port 131, reducing the influence of the water on the first storage body 1, and facilitating to improve the reliability of the energy storage device.

[0162] Exemplarily, the water blocking structure 133 can be connected to the upper side of the first top wall 11 by using bolts, rivets, connecting pins and the like connecting members; or can be connected to the upper side of the first top wall 11 by using welding, gluing and the like methods to be firmly connected on the first top wall 11, reducing the possibility of gaps between the water blocking structure 133 and the first top wall 11, and reducing the possibility of water seepage, and facilitating to improve the water blocking ability of the water blocking structure 133.

[0163] In some embodiments, the water-blocking structure 133 comprises a blocking strip 1331 connected to the first top wall 11 and arranged around the first air outlet 131.

[0164] The blocking strip 1331 can be a part of the water-blocking structure 133 protruding from the first top wall 11 in the vertical direction. By including the blocking strip 1331 in the water-blocking structure 133, the material used for the water-blocking structure 133 can be saved, and the cost of the water-blocking structure 133 can be reduced.

[0165] For example, the water-blocking structure 133 can further comprise a sleeve, the port of the sleeve being connected to the upper side of the first top wall 11, and the sleeve being sleeved on the outer periphery of the first air outlet 131.

[0166] In some embodiments, a plurality of blocking strips 1331 are arranged, and the plurality of blocking strips 1331 are connected in sequence and arranged around the first air outlet 131.

[0167] By arranging a plurality of blocking strips 1331, the plurality of blocking strips 1331 are connected in sequence and arranged around the first air outlet 131, so that the plurality of blocking strips 1331 can be connected to form a water-blocking structure 133 surrounding the first air outlet 131, reducing the possibility of water outside the first air outlet 131 entering the first air outlet 131.

[0168] In some embodiments, the blocking strip 1331 can be a rectangular strip, and a plurality of rectangular strips are connected in sequence to form a polygon and arranged around the first air outlet 131 to form the water-blocking structure 133.

[0169] In some embodiments, the blocking strip 1331 can be an arc-shaped strip, and a plurality of arc-shaped strips are connected in sequence to form a ring and arranged around the first air outlet 131 to form the water-blocking structure 133.

[0170] In some embodiments, two adjacent blocking strips 1331 are glued or welded.

[0171] The two adjacent blocking strips 1331 in the plurality of blocking strips 1331 are connected by gluing or welding, reducing the possibility of gaps between the two adjacent blocking strips 1331 and reducing the possibility of water seepage, which is conducive to improving the water-blocking ability of the water-blocking structure 133 formed by the blocking strip 1331.

[0172] In some embodiments, the water-blocking structure 133 and the first top wall 11 are integrally formed.

[0173] The water blocking structure 133 is integrally formed with the first top wall 11. In other words, the water blocking structure 133 and the first top wall 11 are integrally formed by stamping or other similar method, so that the water blocking structure 133 can be manufactured synchronously with the first top wall 11. This not only makes the water blocking structure 133 easy to manufacture, but also makes the overall structure of the water blocking structure 133 have good strength. The water blocking structure 133 and the first top wall 11 can be machined by milling or other similar method from a whole piece of blank.

[0174] In some embodiments, the upper side of the first top wall 11 is provided with a drainage groove 111, which is communicated with the outer wall surface of the first side wall 12.

[0175] The drainage groove 111 is a structure for draining water accumulated on the upper side of the first top wall 11. By providing the drainage groove 111 on the upper side of the first top wall 11 and communicating the drainage groove 111 with the outer wall surface of the first side wall 12, water accumulated on the upper side of the first top wall 11 can flow into the drainage groove 111 and flow along the drainage groove 111 to the outer wall surface of the first side wall 12 and then flow down from the first bin body 1.

[0176] For example, the drainage groove 111 can be formed by being recessed downward from the upper side of the first top wall 11. In some embodiments, the drainage groove 111 can be manufactured synchronously with the first top wall 11 by stamping process; the drainage groove 111 can also be machined on the upper side of the first top wall 11 by milling process.

[0177] Some embodiments of the present application also provide an energy storage system, which comprises a power conversion device and the energy storage device provided in the above technical solutions. The power conversion device is used to electrically connect the power generation device and the energy storage device.

[0178] By electrically connecting the power generation device and the energy storage device by using the power conversion device, the electric energy generated by the power generation device can be stored in the energy storage device by the power conversion device. For example, the power generation device can be a solar panel, a water power generation device, a fire power generation device, a wind power generation device, etc. Since the energy storage system comprises the energy storage device provided in the above technical solutions, the energy storage system has good reliability.

[0179] In some embodiments, a plurality of energy storage devices are provided, and the plurality of energy storage devices are connected in parallel.

[0180] By providing a plurality of energy storage devices connected in parallel in the energy storage system, the power conversion device can be electrically connected between the plurality of energy storage devices connected in parallel and the power generation device, so that the electric energy generated by the power generation device can be stored in the plurality of energy storage devices synchronously by the power conversion device.

[0181] Some embodiments of the application provide a kind of energy storage device, the energy storage device includes first warehouse body 1, second warehouse body 2, third warehouse body 3 and fourth warehouse body 4, first warehouse body 1 is provided with battery device 101, third warehouse body 3 is provided with battery device 101, fourth warehouse body 4 is equipped with electrical components 104, second warehouse body 2 is equipped with the radiator of heat exchange assembly.The third warehouse body 3, first warehouse body 1, fourth warehouse body 4 and second warehouse body 2 are sequentially connected from bottom to top.The second top wall 24 of second warehouse body 2 is equipped with second vent 22, and the first vent 21 of second side wall 25 is equipped with the fan of heat exchange assembly, and its air outlet is communicated with second vent 22 in second warehouse body 2.Fourth warehouse body 4 is communicated with second warehouse body 2 by fourth exhaust mechanism 41.First warehouse body 1 includes first side wall 12 and the first top wall 11 and first bottom wall 14 connected to first side wall 12, and the first exhaust mechanism 13 connected to the first top wall 11 is communicated with first warehouse body 1 and fourth warehouse body 4.The third side wall of third warehouse body 3 is connected, and the third top wall 31 is connected to the third side wall, and the third exhaust mechanism 32 on the third side wall at least partially extends into first warehouse body 1 through the first vent 141 of first bottom wall 14, to realize the communication of third warehouse body 3 and first warehouse body 1.Because in first warehouse body 1, mainly by first side wall 12 to support and carry load, by the first exhaust mechanism 13 for communicating the inside of first warehouse body 1 with the outside is arranged on the first top wall 11, and not arranged on the first side wall 12, reduce the influence of the structure of first side wall 12 due to the arrangement of first exhaust mechanism 13, thereby reducing the influence of the supporting effect and carrying capacity of the wall of first warehouse body 1 due to the arrangement of first exhaust mechanism 13, it is favorable to improve the stress condition of the energy storage device, and it is favorable to improve the reliability of the energy storage device.

[0182] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application, and they should be covered in the scope of the claims and description of the application.Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way.The application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, comprising: a first housing comprising a first top wall and a first side wall connected to each other, the first top wall being provided with a first exhaust mechanism capable of communicating an interior of the first housing with an outside; a battery device, the first housing accommodating the battery device.

2. The energy storage device of claim 1, wherein, The energy storage device further comprises a second housing for accommodating a heat exchange assembly, the second housing being connected to an upper side of the first housing, the first housing being capable of communicating with the second housing through the first exhaust mechanism, the second housing being provided with a first ventilation opening and a second ventilation opening, the heat exchange assembly comprising a heat sink and a fan, the heat sink being arranged in the second housing, an air inlet of the fan communicating with the second housing, and an air outlet of the fan communicating with the second ventilation opening.

3. The energy storage device of claim 2, wherein, The energy storage device further comprises a thermal management pipeline, the thermal management pipeline communicating the heat sink with the battery device.

4. The energy storage device of any one of claims 1 to 3, wherein, The energy storage device further comprises a third housing accommodating the battery device, the third housing being connected to a lower side of the first housing, the third housing comprising a third top wall, the third top wall being provided with a third exhaust mechanism capable of communicating an interior of the third housing with the interior of the first housing.

5. The energy storage device of claim 4, wherein, The first housing further comprises a first bottom wall opposite to the first top wall, the first bottom wall being connected to the first side wall, the first bottom wall being provided with a first air passage opening, in a vertical direction, at least a portion of the first air passage opening coinciding with the third exhaust mechanism.

6. The energy storage device of claim 5, wherein, In a vertical direction, a projection of the third exhaust mechanism is located within a projection range of the first air passage opening.

7. The energy storage device of any one of claims 5 or 6, wherein, The first housing is provided with at least two, the third housing being located at a lower side of the at least two first housings; in a vertical direction, the exhaust mechanism of a lower first housing of adjacent two first housings coincides with at least a portion of the first air passage opening of an upper first housing.

8. The energy storage device of claim 7, wherein, In a vertical direction, a projection of the exhaust mechanism of the lower first housing of the adjacent two first housings is located within a projection range of the first air passage opening of the upper first housing.

9. The energy storage device of claim 7 or 8, wherein, At least a portion of the exhaust mechanism of the lower first housing of the adjacent two first housings extends into the upper first housing from the first air passage opening.

10. The energy storage device of any one of claims 2 to 9, wherein, The second housing is provided with a blocking member for opening and closing the first ventilation opening.

11. The energy storage device of any one of claims 2 to 10, wherein, In a vertical direction, a projection of the first ventilation opening is separated from a projection of the first exhaust mechanism.

12. The energy storage device of any one of claims 2 to 11, wherein, In a vertical direction, a projection of the second ventilation opening is separated from a projection of the first exhaust mechanism.

13. The energy storage device of any one of claims 2 to 12, wherein, The first ventilation opening and the second ventilation opening are respectively arranged at two sides of the heat sink.

14. The energy storage device of any one of claims 2 to 13, wherein, The second housing comprises a second top wall and a second side wall connected to each other, the second ventilation opening being arranged in the second top wall and / or the second side wall, the fan being arranged in the second housing and at the second ventilation opening.

15. The energy storage device of any one of claims 2 to 13, wherein, The second body comprises a second top wall and a second side wall connected to each other, the second vent is arranged on the second top wall and / or the second side wall, and the fan is arranged at the second vent and at least partially extends out of the second body.

16. The energy storage device of any one of claims 14 or 15, wherein, The first vent and the second vent are arranged on the second side wall and are arranged opposite to each other on two sides of the heat sink.

17. The energy storage device of any one of claims 1 to 16, wherein, The energy storage device further comprises an electrical assembly and a fourth body, the electrical assembly is arranged in the fourth body and is electrically connected to the battery device.

18. The energy storage device of claim 17, wherein, In the vertical direction, the fourth body is arranged between the first body and the second body.

19. The energy storage device of any one of claims 2-18, wherein, The energy storage device further comprises a fire-fighting assembly, the fire-fighting assembly comprises a tank body and a spraying member connected to each other, the tank body is arranged in the second body, and the spraying member is arranged in the first body.

20. The energy storage device of any one of claims 2-19, wherein, The energy storage device further comprises a power conversion device, the power conversion device is arranged in the second body and is electrically connected to the battery device.

21. The energy storage device of any one of claims 1 to 20, wherein, The energy storage device further comprises a power conversion device, the power conversion device is arranged in the first body and is electrically connected to the battery device.

22. The energy storage device of any one of claims 1 to 21, wherein, The first exhaust mechanism comprises a first exhaust port arranged on the first top wall and a first blocking member covering the first exhaust port, the first blocking member is switchable between a first state and a second state; in the first state, the first blocking member closes the first exhaust port, and in the second state, the first blocking member opens the first exhaust port.

23. The energy storage device of claim 22, wherein, The first exhaust mechanism further comprises a water blocking structure, the water blocking structure is connected to the first top wall and is at least partially located on the upper side of the first top wall, and the water blocking structure surrounds the first exhaust port.

24. The energy storage device of claim 23, wherein, The water blocking structure comprises a blocking strip, the blocking strip is connected to the first top wall and surrounds the first exhaust port.

25. The energy storage device of claim 24, wherein, The blocking strip is provided in plurality, and the plurality of blocking strips are sequentially connected and surround the first exhaust port.

26. The energy storage device of claim 24 or 25, wherein, Two adjacent blocking strips are glued or welded.

27. The energy storage device of any one of claims 23-26, wherein, The water blocking structure and the first top wall are integrally formed.

28. The energy storage device of any one of claims 23-26, wherein, The water blocking structure is glued or welded on the first top wall.

29. The energy storage device of any one of claims 1-28, wherein, The upper side of the first top wall is provided with a drainage groove, and the drainage groove is communicated with the outer wall surface of the first side wall.

30. The energy storage device of any one of claims 1-29, wherein, The first side wall is provided with a second exhaust port, the second exhaust port is capable of communicating the inside of the first body with the outside, and the second exhaust port is provided with a second blocking member, the second blocking member is switchable between a first state and a second state; in the first state, the second blocking member closes the second exhaust port, and in the second state, the second blocking member opens the second exhaust port.

31. An energy storage system, comprising: a power conversion device; one or more energy storage devices according to any one of claims 1 to 30, and the power conversion device is used to electrically connect a power generation device and the one or more energy storage devices.

Images