Energy storage device and energy storage system

Abstract

The utility model relates to the technical field of energy storage devices, and discloses an energy storage device and an energy storage system.The energy storage device comprises a cabinet body, explosion venting plates and a smoke exhaust baffle, the cabinet body is provided with at least one energy bin, the explosion venting plates are arranged in the cabinet body, the explosion venting plates are arranged corresponding to the energy bins, the smoke exhaust baffle is arranged in the cabinet body, and the energy bins are arranged in the cabinet body. The smoke exhaust baffle is arranged in the energy bin and located on the peripheral side of the explosion venting plate, the smoke exhaust baffle is suitable for guiding substances discharged in the energy bin to be discharged in the discharging direction defined by the smoke exhaust baffle when the explosion venting plate is opened, and drainage holes are formed in the smoke exhaust baffle. According to the energy storage device, the smoke exhaust baffle is arranged, and the water drainage hole is formed in the bottom of the smoke exhaust baffle, so that on one hand, directional emission of high-pressure gas fire flow can be achieved, the influence of environmental wind on the high-pressure gas fire flow is reduced, the influence on surrounding energy storage devices is avoided, and potential safety hazards are reduced; the smoke exhaust baffle can be higher in stability and reliability and longer in service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage devices, in particular to an energy storage device and an energy storage system. BACKGROUND

[0002] In the related art, a venting plate is arranged above the cabinet of an energy storage device to vent the pressure in the energy bin when the pressure is too high, and to discharge the high-pressure gas fire flow when thermal runaway occurs in the energy bin.

[0003] However, there are usually multiple energy storage devices arranged in sequence, and when the venting plate of a certain energy storage device is opened, the discharge of the high-pressure gas fire flow is disordered, which poses a risk of spreading to adjacent energy storage devices and has a high safety hazard. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to at least solve one of the technical problems in the prior art. To this end, one object of the present application is to provide an energy storage device that can achieve orderly discharge of high-pressure gas fire flow and reduce safety hazards.

[0005] The present application further provides an energy storage device using the above energy storage system.

[0006] In a first aspect, the present application provides an energy storage device, comprising: a cabinet, a venting plate, and a smoke exhaust baffle, the cabinet has at least one energy bin, the venting plate is arranged on the cabinet and corresponds to each energy bin, the smoke exhaust baffle is arranged on the cabinet and located on the side of the venting plate, the smoke exhaust baffle is adapted to guide the discharged substances in the energy bin to be discharged along the discharge direction defined by the smoke exhaust baffle when the venting plate is opened, and the smoke exhaust baffle is provided with a drain hole.

[0007] According to the energy storage device of the present application, by arranging the smoke exhaust baffle and the drain hole at the bottom of the smoke exhaust baffle, on the one hand, the directional discharge of the high-pressure gas fire flow can be achieved, and the influence of the environmental wind on the high-pressure gas fire flow can be reduced to avoid affecting the surrounding energy storage devices and reducing safety hazards, on the other hand, the stability and reliability of the smoke exhaust baffle can be higher, and the service life can be longer.

[0008] According to some embodiments of the present application, in the length direction of the cabinet, the venting plate is a plurality of venting plates, and each venting plate corresponds to a plurality of smoke exhaust baffles.

[0009] In the technical scheme, a plurality of energy bins are arranged in sequence in the length direction of the cabinet body, each energy bin is correspondingly provided with a venting opening, a selectively openable venting plate is arranged on the venting opening, a plurality of smoke exhaust baffles are arranged on the circumferential side of each venting plate to form a specific venting channel for each energy bin, directional venting of each energy bin is realized, influence on surrounding energy storage devices is reduced, safety is improved, and the material cost of the smoke exhaust baffles is lower, thereby reducing production cost.

[0010] According to some embodiments of the present application, the smoke exhaust baffle comprises a first baffle extending in the length direction of the venting plate and a second baffle extending in the width direction of the venting plate, the length dimension of the first baffle is L1, the length dimension of the venting plate is L2, and 1.2L2≤L1≤1.5L2 is satisfied, the length dimension of the second baffle is L3, the width dimension of the venting plate is L4, and 1.2L4≤L3≤1.5L4 is satisfied.

[0011] In the technical scheme, the length dimension of the first baffle is greater than the length dimension of the venting plate, the length dimension of the second baffle is greater than the width dimension of the venting plate, the venting channel is formed around the venting plate, and sufficient spacing can be reserved between the smoke exhaust baffle and the venting plate to ensure that the smoke exhaust baffle does not hinder the normal opening of the venting plate during venting and to ensure the working stability and reliability of the venting plate.

[0012] According to some embodiments of the present application, the flow diameter of the drain hole is 9mm-11mm.

[0013] In the technical scheme, the flow diameter of the drain hole is more reasonable, which can not only timely drain the accumulated water in the venting channel surrounded by the smoke exhaust baffle to prevent the smoke exhaust baffle from being corroded and damaged by rainwater, but also make the size of the drain hole more reasonable to take into account the structural strength of the smoke exhaust baffle.

[0014] According to some embodiments of the present application, in the length direction of the cabinet body, the venting plates are a plurality of venting plates, and a plurality of smoke exhaust baffles are correspondingly arranged around the plurality of venting plates.

[0015] In the technical scheme, a plurality of energy bins are arranged in sequence in the length direction of the cabinet body, each energy bin is correspondingly provided with a venting opening, a selectively openable venting plate is arranged on the venting opening, a plurality of smoke exhaust baffles are arranged on the circumferential side of each venting plate to form a specific venting channel for each energy bin, directional venting of each energy bin is realized, influence on surrounding energy storage devices is reduced, safety is improved, and the material cost of the smoke exhaust baffles is lower, thereby reducing production cost.

[0016] According to some embodiments of the present application, the smoke exhaust baffle comprises a third baffle extending along the length direction of the cabinet body and a fourth baffle extending along the length direction of the explosion vent, the length dimension of the third baffle is L5, the length distance dimension between the two explosion vents at the length ends of the cabinet body is L6, and 1.1L6≤L5≤1.2L2 is satisfied, the width dimension of the fourth baffle is L7, the width dimension of the explosion vent is L3, and 1.2L3≤L7≤1.5L3 is satisfied.

[0017] In the above technical solution, by erecting the smoke exhaust baffle outside the plurality of explosion vents, the length dimension of the third baffle is greater than the distance dimension between the two explosion vents at the ends, and the length dimension of the fourth baffle is greater than the width dimension of the explosion vent, so as to form a discharge channel around the explosion vent, and at the same time, sufficient space can be reserved between the smoke exhaust baffle and each explosion vent, so as to ensure that the smoke exhaust baffle does not hinder the normal opening of the explosion vent during discharge, and the working stability and reliability of the explosion vent can also be ensured.

[0018] According to some embodiments of the present application, the flow diameter of the drain hole is 13mm-15mm.

[0019] In the above technical solution, the flow diameter of the drain hole is more reasonable, which not only can timely drain the accumulated water in the discharge channel surrounded by the smoke exhaust baffle, so as to prevent the smoke exhaust baffle from being corroded and damaged by rainwater, but also can make the size of the drain hole more reasonable, so as to take into account the structural strength of the smoke exhaust baffle.

[0020] According to some embodiments of the present application, the side of the smoke exhaust baffle facing the explosion vent and the side of the smoke exhaust baffle facing away from the explosion vent are both provided with support feet.

[0021] In the above technical solution, a groove structure with a thickness dimension matching that of the smoke exhaust baffle can be arranged on the top plate of the cabinet body, and after the smoke exhaust baffle is embedded in the groove, the smoke exhaust baffle can be fixed by the support feet (such as angle iron) located on both sides of the thickness of the smoke exhaust baffle (i.e. the side facing the explosion vent and the side facing away from the explosion vent), so that the smoke exhaust baffle can be vertically erected around the explosion vent, and the fixing stability of the smoke exhaust baffle can be improved.

[0022] According to some embodiments of the present application, the smoke exhaust baffle is movably arranged in the cabinet body and at least partially overlaps the explosion vent, so as to be opened synchronously when the explosion vent is opened.

[0023] In the above technical solution, the smoke exhaust baffle can be rotatably arranged on the cabinet body, or movably arranged on the cabinet body, and at least partially overlaps the explosion vent, so that when the explosion vent is opened, the opening force of the explosion vent can form a driving force for the movement of the smoke exhaust baffle, thereby driving the smoke exhaust baffle to move to the vertical state, so as to define a discharge channel, and achieve the same technical effects as the first and second embodiments.

[0024] According to some embodiments of the present application, the smoke exhaust baffle is reversibly arranged on the cabinet body through a turning hinge and is connected with the driving motor through a coupling.

[0025] In the above technical solution, the smoke exhaust baffle can be actively opened by the driving motor, and the driving motor can be electrically connected with the thermal management module or the fire-fighting module of the energy storage device to be opened before the explosion vent is opened or to be synchronously opened when the explosion vent is opened, so as to actively open and close the exhaust passage, which not only can reduce the safety hazard, but also can improve the space occupation of the energy storage device when the smoke exhaust baffle is in a horizontal state.

[0026] According to some embodiments of the present application, the height dimension of the smoke exhaust baffle is H1, the length dimension of the explosion vent is L2, and 1.05L2≤H1≤1.2L2 is satisfied.

[0027] In the above technical solution, the length dimension of the smoke exhaust baffle is higher than that of the explosion vent, which can ensure that the smoke exhaust baffle is still higher than the explosion vent when the explosion vent is in an open state, so as to not only avoid the horizontal diffusion of smoke, but also take into account the size of the smoke exhaust baffle to avoid the height dimension of the smoke exhaust baffle being too high to take into account the material cost.

[0028] In a second aspect, the present application provides an energy storage system, which comprises a power conversion device and an energy storage device as in the above embodiments, and the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0029] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0031] Figure 1 is a schematic view of a smoke exhaust baffle according to a first embodiment of the present application;

[0032] Figure 2 is a schematic view of a smoke exhaust baffle according to a second embodiment of the present application;

[0033] Figure 3 is a top view of an energy storage device according to an embodiment of the present application;

[0034] Figure 4 is a schematic view of a smoke exhaust baffle according to a third embodiment of the present application;

[0035] Figure 5 is a schematic view of a cabinet body according to an embodiment of the present application;

[0036] Figure 6is a schematic view of the cooperation of the cabinet body and the explosion venting plate according to the embodiment of the present application;

[0037] Figure 7 is a schematic view of the water drainage hole on the smoke exhaust baffle according to the embodiment of the present application;

[0038] Figure 8 is a schematic view of the connection of the smoke exhaust baffle and the cabinet body according to the embodiment of the present application;

[0039] Figure 9 is a schematic view of the energy storage system according to the embodiment of the present application.

[0040] Reference signs:

[0041] energy storage device 100,

[0042] cabinet body 10,

[0043] explosion venting plate 20,

[0044] smoke exhaust baffle 30, first baffle 31, second baffle 32, third baffle 33, fourth baffle 34, supporting leg 35, overturning hinge 36, coupling 37, driving motor 38, water drainage hole 39,

[0045] energy storage system 200, power conversion device 300, power generation device 400,

[0046] energy bin a. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0048] Unless otherwise defined, all the technical and scientific terms used in the present application have the same meanings as those commonly understood by those skilled in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application; the terms “include” and “have” and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover the non-exclusive inclusion. The terms “first”, “second” and the like in the specification and claims of the present application or the above description of drawings are used to distinguish different objects, and are not intended to describe a specific order or primary and secondary relationship.

[0049] Reference to "an embodiment" or "the embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive.

[0050] In the description of the application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0051] In this application, the term "and / or", only describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0052] In the embodiments of the application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device, are only exemplary and should not constitute any limitation on the application.

[0053] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0054] In the description of the application, the first feature "above" or "below" the second feature can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween.

[0055] In the description of the present application, the first feature is "on", "above" and "over" the second feature, which includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher than the second feature in height.

[0056] "Multiple" appearing in the present application refers to two or more (including two).

[0057] The embodiments of the present application provide a kind of energy storage device, including one or more battery clusters (Battery Cluster) to improve the voltage and capacity of energy storage device. Battery cluster can include multiple battery devices, multiple battery devices are connected in series by bus component to improve the voltage of energy storage device. When energy storage device includes multiple battery clusters, multiple battery clusters are connected in parallel to improve the capacity of energy storage device.

[0058] The battery apparatus (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 (Battery Cell Assembly) can include a plurality of battery cells connected in series, parallel or hybrid connection by bus components.

[0059] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0060] The battery cell can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited in this regard.

[0061] 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 the appropriate time. For example, the energy storage device can store electrical energy during the low valley of electricity consumption, and provide electrical energy for related users or electrical equipment during the peak of electricity consumption. 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.

[0062] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0063] In some embodiments, the energy storage device can include a cabinet body and one or more battery clusters, and the battery clusters are housed in the cabinet body.

[0064] In some embodiments, the energy storage device can include a thermal management module, a main control module, a master control module, a power distribution module, and a fire-fighting module, etc. In some embodiments, the energy storage device can include a thermal management module, a main control module, a master control module, a power distribution module, and a fire-fighting module, etc.

[0065] As an example, the thermal management module can include a liquid cooling unit, which provides cooling liquid to each battery device through a pipeline for adjusting the temperature of the battery cell.

[0066] As an example, the master module can serve as a battery management unit of the battery cluster for monitoring and managing the battery cluster. The master module can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, the charging and discharging current, voltage, etc. of the battery cluster can be controlled. The master module includes a slave battery management unit SBMU (Slave Battery Management Unit, SBMU), a fusion switch, and other modules.

[0067] As an example, the master module can serve as a battery management unit of the battery cluster for monitoring and managing the battery cluster. The master module can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, the charging and discharging current, voltage, etc. of the battery cluster can be controlled. The master module includes a slave battery management unit SBMU (Slave Battery Management Unit, SBMU), a fusion switch, and other modules.

[0068] As an example, the fire control system includes a control panel, a detector, an alarm device, etc. for detecting, alarming, or extinguishing the energy storage system.

[0069] As shown in Figure 5 As shown in FIG. 1, in some embodiments, the energy storage system 200 can include one or more energy storage devices 100 and a power conversion device 300 (Power Converter System, PCS) connected between a power generation device 400 and the energy storage device 100. The power generation device 400 is used to generate electric energy, and the electric energy generated by the power generation device 400 can be stored in the energy storage device 100 through the power conversion device 300. As an example, the power generation device 400 can be a solar panel, a water power generation device, a fire power generation device, a wind power generation device, etc. The specific type of the power generation device 400 is not limited in the present application.

[0070] In the related art, the cabinet 10 of the energy storage device 100 needs to be provided with a venting plate 20 to release pressure by opening the venting plate 20 when the pressure in the energy bin a is too large, and to realize the discharge of high-pressure gas fire flow when thermal runaway occurs in the energy bin a.

[0071] However, the energy storage devices 100 are often multiple and sequentially arranged, when the explosion venting plate 20 of a certain energy storage device 100 is opened, the discharge of the high-pressure gas fire flow (the gas flow wraps the particulate matter, and even has an open flame) is disordered, and there is a risk of causing the adjacent energy storage device 100 to spread, that is, the flue gas and flame discharged by the explosion venting plate 20 do not have a fixed propagation direction and can propagate to the adjacent energy storage device, causing the thermal runaway to spread to the adjacent energy storage device 100, and there is a high safety hazard.

[0072] In the safety experiment of the applicant, in a large fire scene, when the target energy storage device catches fire, a large amount of high-pressure gas fire flow will be discharged from the explosion vent of the cabinet 10, and under the action of external wind, it will spread to other energy storage devices 100 around, and the flame is easy to transfer to the adjacent energy storage device 100, thereby causing the adjacent energy storage device 100 to catch fire.

[0073] Based on this, the present application provides an energy storage device 100, which is provided with a smoke exhaust baffle 30 outside the explosion venting plate 20, which can shield the high-pressure gas fire flow and make it discharge according to the discharge direction, so as to reduce the influence on the surrounding other energy storage devices 100 and reduce the safety hazard.

[0074] The following refers to Figures 1-9 The energy storage device 100 and the energy storage system 200 according to the embodiments of the present application are described.

[0075] As Figure 1 , Figure 2 and Figure 4 indicated, the present application provides an energy storage device 100, which comprises a cabinet 10, an explosion venting plate 20 and a smoke exhaust baffle 30, the cabinet 10 has at least one energy bin a, the explosion venting plate 20 is arranged on the cabinet 10, and the explosion venting plate 20 is arranged corresponding to each energy bin a, the smoke exhaust baffle 30 is arranged on the cabinet 10 and located on the side of the explosion venting plate 20, and the smoke exhaust baffle 30 is adapted to guide the material discharged from the energy bin a along the discharge direction defined by the smoke exhaust baffle 30 when the explosion venting plate 20 is opened.

[0076] Specifically, as Figure 5 indicated, the top end of the cabinet 10 is provided with an explosion vent, and the explosion vent is provided with an explosion venting plate 20, which is configured to be opened when the pressure or temperature in the energy bin a exceeds a set threshold, so as to realize the directional pressure relief of the thermal runaway in the energy bin a, and after the explosion venting plate 20 is opened, the smoke exhaust baffle 30 is arranged on the side of the explosion vent, which can form a discharge channel to limit the discharge direction, so that the high-pressure gas fire flow can be discharged in a directional manner.

[0077] It can be understood that the smoke baffle 30 forms a physical isolation channel (i.e. a discharge channel) around the explosion vent 20, which can effectively isolate the influence of external wind, prevent the high-pressure gas fire flow (high-temperature smoke wrapped with particulate matter, even with open flame) discharged from the cabinet 10 with thermal runaway from spreading to the adjacent energy storage device 100, and at the same time, the smoke baffle 30 can guide the high-pressure gas fire flow to be discharged upward along the discharge direction, and can also reduce the risk of heat radiation and flame spread to the surrounding energy storage device 100.

[0078] In other words, by arranging the smoke baffle 30, on the one hand, the influence of wind can be isolated, and the high-pressure gas fire flow can be prevented from spreading around under the action of external wind, and on the other hand, directional discharge can be achieved, heat radiation can be reduced, and the spread speed of thermal runaway can be delayed.

[0079] Further, referring to Figure 7 A drain hole 39 is arranged on the smoke baffle 30, i.e. a drain hole 39 is arranged at the bottom of the smoke baffle 30 connected to the cabinet 10. The drain hole 39 can discharge rainwater in time to avoid rainwater accumulation causing the top plate of the smoke baffle 30 or the cabinet 10 to rust, prolong the service life, and improve the reliability.

[0080] According to the energy storage device 100 of the embodiment of the present application, by arranging the smoke baffle 30 and the drain hole 39 at the bottom of the smoke baffle 30, on the one hand, directional discharge of the high-pressure gas fire flow can be achieved, and the influence of the environmental wind on the high-pressure gas fire flow can be reduced to avoid affecting the surrounding energy storage device 100 and reducing the safety hazard, and on the other hand, the stability and reliability of the smoke baffle 30 can be higher, and the service life can be longer.

[0081] It should be noted that the surface of the smoke baffle 30 should be coated with a high-temperature-resistant and corrosion-resistant coating layer, such as a ceramic coating and a corrosion-resistant paint on the surface of the smoke baffle 30, to enhance the high-temperature resistance and corrosion resistance, so that the smoke baffle 30 can maintain structural stability in a high-temperature environment, reduce the risk of thermal deformation or burning, and prolong the service life of the smoke baffle 30.

[0082] As shown in Figure 1 In the first embodiment of the present application, in the length direction of the cabinet 10, the explosion vent 20 is a plurality of, and each explosion vent 20 is surrounded by a plurality of smoke baffles 30.

[0083] Specifically, multiple energy chambers a are arranged sequentially along the length of the cabinet 10. Each energy chamber a is equipped with a corresponding explosion vent, and an optional explosion vent plate 20 is installed on the explosion vent. Multiple smoke exhaust baffles 30 are arranged around each explosion vent plate 20 to form a specific venting channel for each energy chamber a, so as to realize the directional venting of each energy chamber a, thereby reducing the impact on the surrounding energy storage device 100, improving safety, and reducing safety hazards. Under the premise of reducing safety hazards, the overall material cost of the smoke exhaust baffles 30 is lower, which can reduce production costs.

[0084] Combination Figure 1 and Figure 6 As shown, according to some embodiments of this application, the smoke exhaust baffle 30 includes a first baffle 31 extending along the length direction of the explosion venting plate 20 and a second baffle 32 extending along the width direction of the explosion venting plate 20. The length dimension of the first baffle 31 is L1, the length dimension of the explosion venting plate 20 is L2, and the condition 1.2L2≤L1≤1.5L2 is satisfied. The length dimension of the second baffle 32 is L3, the width dimension of the explosion venting plate 20 is L4, and the condition 1.2L4≤L3≤1.5L4 is satisfied.

[0085] For example, if the length of the explosion relief plate 20 is 150mm and the width is 100mm, then the length of the first baffle 31 is 180mm-225mm (including the end value), and the length of the second baffle 32 is 120mm-150mm (including the end value).

[0086] Therefore, by erecting smoke exhaust baffles 30 around the explosion relief plate 20, with the first baffle 31 having a length greater than the length of the explosion relief plate 20 and the second baffle 32 having a length greater than the width of the explosion relief plate 20, a venting channel is formed around the explosion relief plate 20. At the same time, sufficient distance can be reserved between the smoke exhaust baffles 30 and the explosion relief plate 20 to ensure that the smoke exhaust baffles 30 will not obstruct the normal opening of the explosion relief plate 20 during venting, and also to ensure the working stability and reliability of the explosion relief plate 20.

[0087] like Figure 7 As shown, according to some embodiments of this application, the flow diameter of the drain hole 39 is 9mm-11mm.

[0088] For example, in the first embodiment, the diameter of the drain hole 39 is 9mm, 10mm, 11mm, etc.

[0089] This makes the flow diameter of the drain hole 39 more reasonable, which can not only timely drain the water inside the discharge channel enclosed by the smoke exhaust baffle 30 to prevent the smoke exhaust baffle 30 from being corroded and damaged by rainwater, but also make the size of the drain hole 39 more reasonable to take into account the structural strength of the smoke exhaust baffle 30.

[0090] likeFigure 2 and Figure 3 As shown in FIGS. 1-2, in the second embodiment, a plurality of explosion venting plates 20 are arranged along the length direction of the cabinet 10, and a plurality of smoke exhaust baffles 30 are arranged outside the plurality of explosion venting plates 20.

[0091] Specifically, a plurality of energy compartments a are arranged along the length direction of the cabinet 10, and each energy compartment a is provided with an explosion venting plate 20, and the plurality of explosion venting plates 20 form an explosion venting channel, and the plurality of explosion venting plates 20 are arranged in the same explosion venting channel. The arrangement of the smoke exhaust baffles 30 is easier and more efficient.

[0092] As shown in FIGS. 1-2, in the second embodiment, a plurality of explosion venting plates 20 are arranged along the length direction of the cabinet 10, and a plurality of smoke exhaust baffles 30 are arranged outside the plurality of explosion venting plates 20. Figure 2 、 Figure 3 and Figure 6 According to some embodiments of the present application, the smoke exhaust baffle 30 includes a third baffle 33 extending along the length direction of the cabinet 10 and a fourth baffle 34 extending along the length direction of the explosion venting plate 20. The length dimension of the third baffle 33 is L5, the length distance dimension of the two explosion venting plates 20 at the length ends of the cabinet 10 is L6, and 1.1L6≤L5≤1.2L2 is satisfied. The width dimension of the fourth baffle 34 is L7, the width dimension of the explosion venting plate 20 is L3, and 1.2L3≤L7≤1.5L3 is satisfied.

[0093] It should be noted that the length distance dimension of the two explosion venting plates 20 at the length ends of the cabinet 10 refers to the distance between the width edges of the explosion venting plate 20 at one length end of the cabinet 10 and the explosion venting plate 20 at the other length end of the cabinet 10 away from each other in the length direction of the cabinet 10.

[0094] For example, the length distance dimension of the two explosion venting plates 20 at the length ends of the cabinet 10 is 2000mm, and the width dimension of the explosion venting plate 20 is 100mm. Then, the length dimension of the third baffle 33 is 1100mm-1200mm (including the endpoint value), and the length dimension of the fourth baffle 34 is 120mm-150mm (including the endpoint value).

[0095] Therefore, by erecting the smoke exhaust baffle 30 outside the plurality of explosion venting plates 20, the length dimension of the third baffle 33 is greater than the distance dimension between the two end explosion venting plates 20, and the length dimension of the fourth baffle 34 is greater than the width dimension of the explosion venting plate 20, so as to form an explosion venting channel around the explosion venting plate 20. At the same time, a sufficient gap can be reserved between the smoke exhaust baffle 30 and each explosion venting plate 20, so as to ensure that the smoke exhaust baffle 30 does not hinder the normal opening of the explosion venting plate 20 during explosion venting, and also ensures the working stability and reliability of the explosion venting plate 20.

[0096] As shown in the drawings, according to some embodiments of the present application, the flow-through diameter of the drain hole 39 is 13-15 mm. Figure 7

[0097] Exemplarily, in the second embodiment, the diameter of the drain hole 39 is 13 mm, 14 mm, 15 mm, etc.

[0098] In this way, the flow-through diameter of the drain hole 39 is more reasonable, not only can the accumulated water in the discharge passage surrounded by the smoke baffle 30 be discharged in time to prevent the smoke baffle 30 from being corroded and damaged by rainwater, but also the size of the drain hole 39 can be more reasonable to take into account the structural strength of the smoke baffle 30.

[0099] It should be pointed out that the flow-through diameter of the drain hole 39 in the second embodiment is larger than that in the first embodiment because in the second embodiment, the area of the discharge passage is larger and the amount of water in the discharge passage under rainy weather is larger, so a larger drain hole 39 is provided to ensure the drainage speed.

[0100] As shown in the drawings, according to some embodiments of the present application, the side of the smoke baffle 30 facing the explosion vent plate 20 and the side of the smoke baffle 30 away from the explosion vent plate 20 are both provided with support feet 35. Figure 5 Specifically, a groove structure matching the thickness size of the smoke baffle 30 can be provided on the top plate of the cabinet 10, after the smoke baffle 30 is embedded in the groove, the smoke baffle 30 is fixed by the support feet 35 (such as angle iron) located on both sides of the thickness of the smoke baffle 30 (i.e. the side facing the explosion vent plate 20 and the side away from the explosion vent plate 20), so that it stands around the explosion vent plate 20, which can improve the fixing stability of the smoke baffle 30.

[0101] As shown in the drawings, in the third embodiment, the smoke baffle 30 is movably arranged on the cabinet 10 and at least partially overlaps the explosion vent plate 20 to be opened synchronously when the explosion vent plate 20 is opened.

[0102] Figure 4 Specifically, the smoke baffle 30 can be rotatably arranged on the cabinet 10 or movably arranged on the cabinet 10 and at least partially overlaps the explosion vent plate 20, so that when the explosion vent plate 20 is opened, the opening force of the explosion vent plate 20 can form a driving force for the movement of the smoke baffle 30, thereby driving the smoke baffle 30 to move to the standing state to define a discharge passage, achieving the same technical effect as the first and second embodiments.

[0103] It should be pointed out that in the third embodiment, the bottom end of the smoke baffle 30 in the standing state can also be provided with a drain hole 39, of course, it can also not be provided with a drain hole 39.

[0104] It should be pointed out that in the third embodiment, the bottom end of the smoke baffle 30 in the standing state can also be provided with a drain hole 39, of course, it can also not be provided with a drain hole 39. ​​

[0105] As shown in Figure 4 According to some embodiments of the present application, the smoke exhaust baffle 30 is reversibly arranged on the cabinet body 10 through the reversing hinge 36 and connected with the driving motor 38 through the coupling 37.

[0106] Thus, the smoke exhaust baffle 30 can be actively opened by the driving motor 38, and the driving motor 38 can be electrically connected with the thermal management module or the fire-fighting module of the energy storage device 100 to be opened before the explosion venting plate 20 is opened or to be synchronously opened when the explosion venting plate 20 is opened, so as to realize the active opening and closing of the exhaust channel, which not only can reduce the safety hazard, but also can improve the space occupation of the energy storage device 100 when the smoke exhaust baffle 30 is in the horizontal state.

[0107] It should be pointed out that the number of the smoke exhaust baffle 30 corresponding to each explosion venting plate 20 in the first embodiment should be less than or equal to 4, and the number of the smoke exhaust baffle 30 corresponding to the plurality of explosion venting plates 20 in the second embodiment should be less than or equal to 4, that is, the smoke exhaust baffle 30 can be four independent plate structures, or two L-shaped plate structures, or a U-shaped plate structure and a straight-shaped plate structure, or an integral plate bending, and in the third embodiment, the smoke exhaust baffle 30 should be four and all be configured as a straight shape.

[0108] In other words, the structure of the smoke exhaust baffle 30 adopts different shape combinations according to actual needs, such as four independent straight-shaped plate structures, two L-shaped plate structures, a U-shaped plate structure and a straight-shaped baffle, or an integral bending closed plate structure, so as to adapt to the size or special space requirements of the cabinet body 10, reduce the customization cost, each smoke exhaust baffle 30 can be replaced individually without the need for overall removal, thereby saving maintenance time and cost.

[0109] As shown in Figure 1 and Figure 3 According to some embodiments of the present application, the height dimension of the smoke exhaust baffle 30 is H1, the height dimension of the explosion venting plate 20 is L2, and it satisfies: 1.05L2≤H1≤1.2L2.

[0110] Exemplarily, the length dimension of the explosion venting plate 20 is 150mm, and the height dimension of the smoke exhaust baffle 30 should be 157.5mm-180mm (including the end point value).

[0111] In this way, the smoke exhaust baffle 30 is higher than the length dimension of the explosion venting plate 20, which can ensure that the smoke exhaust baffle 30 is still higher than the explosion venting plate 20 when the explosion venting plate 20 is in the opened state, not only can avoid the horizontal diffusion of smoke, but also can take into account the size of the smoke exhaust baffle 30 to avoid the height dimension of the smoke exhaust baffle 30 being too high to take into account the material cost.

[0112] The following describes three embodiments of this application in detail with reference to the accompanying drawings.

[0113] like Figure 1 As shown, in the first embodiment, four independent smoke exhaust baffles 30 are symmetrically installed around the explosion relief plate 20 to form a rectangular venting channel; the bottom of the smoke exhaust baffle 30 is provided with multiple drainage holes 39 with a diameter of 10mm, the smoke exhaust baffle 30 is embedded in a preset groove on the top plate and fixed by the support foot 35, and the surface of the smoke exhaust baffle 30 is coated with a high-temperature ceramic coating and fluorocarbon resin anti-corrosion paint.

[0114] like Figure 2 and Figure 3 As shown, in the second embodiment, a smoke exhaust baffle 30 is provided on the top plate, and multiple explosion relief plates 20 are arranged inside the smoke exhaust baffle 30 to form a continuous U-shaped or ring structure. The smoke exhaust baffle 30 can be an integral bent structure. The bottom of the smoke exhaust baffle 30 is provided with multiple evenly distributed drainage holes 39, and the surface treatment adopts a composite coating of high-temperature ceramic coating and silicate anti-corrosion layer.

[0115] like Figure 4 As shown, in the third embodiment, there are four smoke exhaust baffles 30, which are arranged around each explosion relief plate 20. They are normally kept horizontal. When an explosion relief signal is received or the system detects an abnormal internal pressure, the drive motor 38 drives the smoke exhaust baffles 30 to rotate or translate, forming a venting channel so that the high-pressure gas flow can be discharged upward.

[0116] The hinge 36 can be installed between the top plate and the smoke exhaust baffle 30, allowing the smoke exhaust baffle 30 to rotate around the hinge 36. The drive motor 38 is linked to the hinge 36 through the coupling 37, driving the smoke exhaust baffle 30 to selectively switch to the vertical state. The pressure, temperature or gas concentration can be detected by the sensors of the fire protection system or thermal management system inside the energy storage device 100, and the drive motor 38 can be controlled to drive the smoke exhaust baffle 30 to open when the threshold is reached. Alternatively, a separate sensor can be installed to detect the pressure, temperature or gas concentration. This application does not make any specific limitations.

[0117] In the third embodiment, the opening angle or height of the smoke exhaust baffle 30 can be set according to the actual explosion venting requirements, such as opening to 90°, 120°, or fully extended. The surface of the smoke exhaust baffle 30 is still coated with a high-temperature resistant ceramic coating and anti-corrosion paint, and the bottom of the smoke exhaust baffle 30 is still provided with drainage holes 39. The smoke exhaust baffle 30 and the explosion venting plate 20 are at least partially overlapped, so that even if the drive motor 38 fails during the venting process, the smoke exhaust baffle 30 can still be passively opened by the airflow generated by the pressure relief, ensuring the reliability and stability of the smoke exhaust baffle 30.

[0118] like Figure 9As shown, the application provides an energy storage system 200, comprising a power conversion device and the energy storage device 100 as in the above embodiments, the power conversion device is used to electrically connect the power generation device and the energy storage device 100.

[0119] According to the energy storage system 200 of the embodiments of the application, the energy storage device 100 is used, so that the reliability and safety of the energy storage system 200 are both higher.

[0120] The other constitutions and operations of the energy storage device 100 and the energy storage system 200 according to the embodiments of the application are known to those skilled in the art, and will not be described here.

[0121] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0122] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage device, characterized in that, include: Cabinet (10), the cabinet (10) having at least one energy compartment (a); An explosion relief plate (20) is provided on the cabinet (10), and each of the energy chambers (a) is provided with an explosion relief plate (20). A smoke exhaust baffle (30) is provided on the cabinet (10) and located on the periphery of the explosion relief plate (20). The smoke exhaust baffle (30) is adapted to guide the substances released in the energy chamber (a) to be discharged along the discharge direction defined by the smoke exhaust baffle (30) when the explosion relief plate (20) is opened. The smoke exhaust baffle (30) is provided with a drain hole (39).

2. The energy storage device according to claim 1, characterized in that, Along the length of the cabinet (10), there are multiple explosion relief plates (20), and each explosion relief plate (20) is surrounded by multiple smoke exhaust baffles (30).

3. The energy storage device according to claim 2, characterized in that, The smoke exhaust baffle (30) includes a first baffle (31) extending along the length direction of the explosion relief plate (20) and a second baffle (32) extending along the width direction of the explosion relief plate (20). The length dimension of the first baffle (31) is L1, the length dimension of the explosion relief plate (20) is L2, and the condition 1.2L2≤L1≤1.5L2 is satisfied. The length dimension of the second baffle (32) is L3, and the width dimension of the explosion relief plate (20) is L4, and the condition 1.2L4≤L3≤1.5L4 is satisfied.

4. The energy storage device according to claim 2, characterized in that, The flow diameter of the drain hole (39) is 9mm-11mm.

5. The energy storage device according to claim 1, characterized in that, Along the length of the cabinet (10), there are multiple explosion relief plates (20), and multiple smoke exhaust baffles (30) are provided around the multiple explosion relief plates (20).

6. The energy storage device according to claim 5, characterized in that, The smoke exhaust baffle (30) includes: a third baffle (33) extending along the length direction of the cabinet (10) and a fourth baffle (34) extending along the length direction of the explosion relief plate (20). The length dimension of the third baffle (33) is L5, the length distance between the two explosion relief plates (20) located at the length end of the cabinet (10) is L6, and satisfies 1.1L6≤L5≤1.2L2. The width dimension of the fourth baffle (34) is L7, and the width dimension of the explosion relief plate (20) is L3, and satisfies 1.2L3≤L7≤1.5L3.

7. The energy storage device according to claim 5, characterized in that, The flow diameter of the drain hole (39) is 13mm-15mm.

8. The energy storage device according to any one of claims 2-7, characterized in that, The smoke exhaust baffle (30) is provided with support feet (35) on the side facing the explosion relief plate (20) and on the side away from the explosion relief plate (20).

9. The energy storage device according to claim 1, characterized in that, The smoke exhaust baffle (30) is movably disposed on the cabinet (10) and is at least partially stacked with the explosion relief plate (20) so as to open synchronously when the explosion relief plate (20) is opened.

10. The energy storage device according to claim 9, characterized in that, The smoke exhaust baffle (30) is rotatably mounted on the cabinet (10) via a hinge (36) and is connected to the drive motor (38) via a coupling (37).

11. The energy storage device according to claim 1, characterized in that, The height dimension of the smoke exhaust baffle (30) is H1, and the height dimension of the explosion relief plate (20) is L2, and satisfies: 1.05L2≤H1≤1.2L2.

12. An energy storage system, characterized in that, It includes a power conversion device and an energy storage device as described in any one of claims 1-11, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

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