Energy storage device, charging network and energy storage system

Abstract

The utility model relates to the technical field of energy storage devices. The utility model provides an energy storage device, a charging network and an energy storage system. The energy storage device comprises a box body and a base. In the first direction, the base is arranged on one side of the box body. The base comprises a first sealing plate and a second sealing plate. A containing space is defined by the first sealing plate and the box body. In the first direction, the second sealing plate is arranged on the side, away from the containing space, of the first sealing plate, and the second sealing plate and the first sealing plate are arranged at intervals. The side, defined by the first sealing plate, of the containing space comprises a drainage face. The drainage face comprises at least two slopes which are obliquely arranged relative to the first direction. Wherein at least one slope is provided with a water outlet. According to the energy storage device, accumulated water in the box body can be reduced, the problem of accumulated water in the box body due to the fact that the foundation is uneven is solved, the risk that devices in the box body are damaged due to accumulated water is reduced, the service life of the energy storage device is prolonged, and the reliability of the energy storage device is improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and more specifically, to an energy storage device, a charging network, and an energy storage system. Background Technology

[0002] Currently, in the process of charging and discharging electrical equipment, condensation generally forms on the inner wall of the energy storage container. The condensation drips and accumulates, which may cause water to accumulate inside the container. This increases the risk of corrosion and damage to the internal components of the energy storage container due to long-term water accumulation, and affects the service life of the energy storage container. Utility Model Content

[0003] In view of this, embodiments of this application provide an energy storage device, a charging network, and an energy storage system that can reduce the risk of equipment damage caused by water accumulation and extend the service life of the energy storage device.

[0004] Therefore, according to a first aspect of the embodiments of this application, an energy storage device is provided, the energy storage device comprising: a housing; a base, the base being disposed on one side of the housing along a first direction, the base including a first sealing plate and a second sealing plate, the first sealing plate and the housing enclosing an accommodating space, the second sealing plate being disposed on the side of the first sealing plate away from the accommodating space along the first direction and spaced apart from the first sealing plate, the side of the first sealing plate defining the accommodating space including a drainage surface, the drainage surface including at least two slopes, the at least two slopes being inclined relative to the first direction, wherein at least one slope is provided with a drainage outlet.

[0005] The energy storage device provided in this application includes a housing and a base. Specifically, along a first direction, the base is disposed on one side of the housing. The base includes a first sealing plate and a second sealing plate. Since the second sealing plate and the first sealing plate are spaced apart, an insulation space is formed, reducing heat transfer between the inside of the housing and the external environment, thereby helping to reduce the generation of condensate on the inner wall of the housing.

[0006] The first sealing plate defines one side of the accommodating space, including a drainage surface. The drainage surface includes at least two slopes that are inclined relative to the first direction, and at least one slope is provided with a drain outlet. When condensate drips from the tank into the drainage surface, it can flow along the at least two inclined slopes of the drainage surface and be smoothly discharged to the outside of the tank through the drain outlet. This enables timely discharge of condensate from the tank, thereby reducing the generation of water accumulation inside the tank. This reduces the risk of electrical short circuits caused by water accumulation and corrosion damage to internal components, which helps to extend the service life of the energy storage device and improve its reliability.

[0007] Optionally, the side of the second sealing plate facing away from the receiving space is the first surface. The distance between the central region of the drainage surface and the first surface in the first direction is greater than the distance between the edge region of the drainage surface and the first surface in the first direction, and the drain outlet is configured near the edge region. Alternatively, the distance between the central region of the drainage surface and the first surface in the first direction is less than the distance between the edge region of the drainage surface and the first surface in the first direction, and the drain outlet is configured near the central region.

[0008] Because the drain outlet is located near a lower position, it helps to improve the efficiency of condensate drainage on the drain surface, enabling timely and effective drainage of condensate and reducing the generation of water inside the tank.

[0009] Optionally, in any two adjacent slopes, one slope is provided with a drain outlet, and liquid on the other slope can flow into the drain outlet.

[0010] In other words, any two adjacent slopes can share a single drainage outlet, which helps reduce the number of drainage outlets and thus lowers the structural cost and installation complexity of the energy storage device.

[0011] Optionally, the side of the second sealing plate facing away from the receiving space is the first surface; any two adjacent slopes include the first slope and the second slope. The distance between the first slope and the first surface in the first direction gradually decreases along the direction closer to the second slope, and the distance between the second slope and the first surface in the first direction gradually decreases along the direction closer to the first slope.

[0012] By setting any two adjacent slopes to be tilted in opposite directions, it is convenient for two adjacent slopes to share a single drainage outlet.

[0013] Optionally, the first slope and the second slope are connected.

[0014] In other words, the condensate dripping onto the second slope can flow directly to the first slope and be discharged through the drain outlet on the first slope, making it convenient for the first and second slopes to share a single drain outlet. This also simplifies the structure of the energy storage device.

[0015] Optionally, the base also includes a first support beam and a water guide pipe. The first support beam is located between the first slope and the second slope. The first support beam has a receiving cavity, and the water guide pipe is located within the receiving cavity, with both ends of the water guide pipe passing through the first support beam.

[0016] The two ends of the water pipe pass through the first support beam. When the condensate formed inside the box drips onto the second slope, the condensate on the second slope flows to the first slope through the water pipe and is discharged to the outside of the box through the drain outlet on the first slope. This improves the load-bearing capacity of the base while allowing two adjacent slopes to share a single drain outlet.

[0017] Optionally, the base also includes a water collection trough. The water collection trough is located on at least one slope. The water collection trough is connected to a drain outlet.

[0018] By setting up a water collection tank on at least one slope, condensate on the slope can be collected and temporarily stored. In cases where the foundation of the energy storage device is uneven, this can reduce the overflow of water into other areas, which is beneficial to improving the drainage efficiency and reliability of the energy storage device.

[0019] Optionally, the drain outlet is located on the bottom or side wall of the water collection tank.

[0020] In other words, integrating the drain outlet into the water collection tank facilitates the smooth drainage of water stored in the tank, which helps to further improve the drainage efficiency and reliability of the energy storage device.

[0021] Optionally, the bottom wall of the water collection tank has a recess. The recess extends along a first direction and toward the side away from the receiving space. A drain outlet is provided in the recess.

[0022] In other words, part of the bottom wall of the water collection tank protrudes outward to form a concave section, which helps to increase the volume of the water collection tank and achieve effective collection and storage of condensate. In cases where the foundation of the energy storage device is uneven, it can further reduce the overflow of water into other areas.

[0023] Optionally, the base also includes a frame and a drain. The frame has a clearance opening. The drain is connected to the frame and forms a water collection trough with the frame. The drain has a recess that passes through the clearance opening.

[0024] Because the drainage components and frame enclose a water collection trough, condensate on the slope can be collected and temporarily stored, reducing water overflow.

[0025] Optionally, the energy storage device also includes a drain valve. At least a portion of the drain valve is located within the recess. The drain valve is used to open or close the drain outlet.

[0026] By setting a drain valve, the drain outlet is opened when draining water, so that condensate can be discharged in a timely and effective manner. When draining is not required, the drain outlet is closed, so that the drain outlet is kept in a sealed state. This keeps the energy storage device sealed from the outside world, reducing the risk of humid air or rainwater from the outside environment entering the cabinet through the drain outlet and causing electrical short circuits inside the cabinet.

[0027] Optionally, the drain valve includes a valve core and a resilient element. The valve core includes a sealing surface. The sealing surface is located on the side of the drain outlet away from the sump and is at least partially opposite to the drain outlet. The valve core has a first position and a second position. The resilient element is disposed on the valve core. When the valve core is in the first position, the sealing surface separates from the drain outlet, and the drain outlet is opened. The resilient element is deformable. When the valve core is in the second position, the sealing surface contacts the drain outlet, and the drain outlet is closed.

[0028] By incorporating a valve core and elastic elements, drainage can be achieved when needed, and the energy storage device can be kept sealed from the outside when not needed. This reduces the risk of humid air or rainwater from the outside environment entering the enclosure through the drain outlet, which could lead to electrical short circuits inside the enclosure.

[0029] Optionally, the base also includes a mounting section, multiple connecting ribs, and multiple reinforcing ribs. The mounting section is located at the drain outlet. The drain valve is movably located on the mounting section. Multiple connecting ribs are located on the outer periphery of the mounting section. Both ends of each connecting rib are connected to the inner walls of the mounting section and the drain outlet, respectively, to divide the drain outlet into multiple sub-outlets. Each sub-outlet is positioned opposite to the sealing surface. Multiple reinforcing ribs are located on the side of the multiple connecting ribs facing away from the sealing surface and on the outer periphery of the mounting section. Each reinforcing rib connects the mounting section, the recess, and a connecting rib.

[0030] On the one hand, it allows for reliable installation of the drain valve in the recess. On the other hand, when there is condensate in the water tank, the condensate enters multiple sub-ports. The evenly distributed multiple sub-ports help improve the uniformity of the force on the sealing surface, reducing the situation where the sealing surface cannot effectively seal the drain port when the valve core is in the second position due to deformation of the sealing surface. This further helps to reduce the entry of humid air or rainwater from the external environment into the housing through the drain port.

[0031] Optionally, the water collection tank is cross-sectioned along a direction perpendicular to the first direction, and the cross-sectional shape of the water collection tank includes a triangle, a rectangle, or a trapezoid.

[0032] In other words, the cross-sectional shape of the water collection tank is triangular, rectangular, or trapezoidal to collect and store condensate from the slope. The specific shape can be set according to actual needs.

[0033] Optionally, at least one slope includes a first end and a second end opposite to each other along a second direction, and a third end and a fourth end opposite to each other along a third direction. Along the first direction, the second end is higher than the first end, and the fourth end is higher than the third end. A drain outlet is configured near the junction of the first and third ends. The first, second, and third directions intersect each other.

[0034] In other words, at least one corner of the ramp is inclined away from the box, meaning that at least one ramp has a tendency to slope in a second and a third direction. When condensate dripping from inside the box onto this ramp, it can flow quickly to the drain outlet via the ramp, which helps to further reduce water accumulation inside the box.

[0035] Optionally, at least two slopes include a first slope, a second slope, and a third slope. The first and second slopes are arranged along a second direction. The third slope is arranged with the first slope along a third direction, and / or with the second slope along a third direction. Wherein, along the first direction, the end of the third slope closer to the first slope is lower than the end of the third slope farther from the first slope. Liquid on the third slope can flow into the first slope and / or the second slope. The first, second, and third directions intersect each other.

[0036] By setting up a first, second, and third slope, when condensate drips from the inner wall of the box onto the third slope, the condensate flows along the inclined trend of the third slope to the first and / or second slopes, and then flows out through the drain outlets on the first and / or second slopes. This increases the distribution area of ​​the slopes within the box, ensuring that condensate dripping from various locations on the inner wall of the box can be drained in a timely and effective manner.

[0037] Optionally, the base also includes a second support beam. The second support beam is located between the third slope and the first slope, and / or the second support beam is located between the third slope and the second slope. The base also includes a water guide. The water guide is located on the second support beam. The water guide extends through the second support beam at both ends in the third direction; or the end of the third slope closest to the second support beam is placed on the second support beam.

[0038] By setting a second support beam between the third slope and the first slope, and / or between the third slope and the second slope, it is beneficial to further improve the overall structural strength of the base, thereby enhancing the load-bearing capacity of the base and achieving reliable support for the entire energy storage device.

[0039] Optionally, the energy storage device also includes a drain pipe. One end of the drain pipe is connected to a drain outlet, and the other end is connected to the outside.

[0040] In other words, when condensate drips from inside the box onto the slope, the condensate flows along the slope's inclination and is discharged outside the box through the drain pipe, thus achieving timely and effective drainage of condensate from inside the box.

[0041] A second aspect of this application provides a charging network that includes the energy storage device of the first aspect of this application. Since the charging network includes the energy storage device of the first aspect of this application, it possesses all the beneficial technical effects of that energy storage device, which will not be elaborated further here.

[0042] A third aspect of this application provides an energy storage system, including the energy storage device of the first aspect of this application. Since the energy storage system includes the energy storage device of the first aspect of this application, it possesses all the beneficial technical effects of that energy storage device, which will not be elaborated further here.

[0043] Additional aspects and advantages of embodiments of this application will be set forth in the following description, in part will be obvious from the description or may be learned by practice of embodiments of this application. Attached Figure Description

[0044] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0045] Figure 1 This is a schematic diagram of the charging network structure in some embodiments of this application;

[0046] Figure 2 This is a schematic diagram of the energy storage system in some embodiments of this application;

[0047] Figure 3 This is a schematic diagram of the structure of the energy storage device in some embodiments of this application;

[0048] Figure 4 This is one of the structural schematic diagrams of the drainage surface in some embodiments of this application;

[0049] Figure 5 This is a second schematic diagram of the drainage surface structure in some embodiments of this application;

[0050] Figure 6 This is the third schematic diagram of the drainage surface structure in some embodiments of this application;

[0051] Figure 7 This is one of the partial structural schematic diagrams of the base in some embodiments of this application;

[0052] Figure 8 This is a second partial structural schematic diagram of the base in some embodiments of this application;

[0053] Figure 9 This is a partial exploded view of the base in some embodiments of this application;

[0054] Figure 10 This is the third partial structural schematic diagram of the base in some embodiments of this application;

[0055] Figure 11 This is one of the structural schematic diagrams of the base in some embodiments of this application;

[0056] Figure 12 for Figure 11 An enlarged view of the base at point A in the illustrated embodiment;

[0057] Figure 13 This is a second schematic diagram of the structure of the base in some embodiments of this application;

[0058] Figure 14 This is the third of several schematic diagrams showing the structure of the base in some embodiments of this application;

[0059] Figure 15 This is the fourth schematic diagram of the structure of the base in some embodiments of this application;

[0060] Figure 16 This is the fifth of several schematic diagrams showing the structure of the base in some embodiments of this application;

[0061] Figure 17 This is the sixth of several schematic diagrams showing the structure of the base in some embodiments of this application.

[0062] in, Figures 1 to 17 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0063] 1. Charging network; 10. Charging piles; 2. Energy storage system; 20. Energy storage converters; 3. Power generation equipment;

[0064] 4. Energy storage device; 40. Housing; 41. Base; 410. Drainage surface; 411. Slope; 412. First slope; 413. Second slope; 414. First end; 415. Second end; 416. Third end; 417. Fourth end; 418. Third slope; 420. First support beam; 422. Receiving cavity; 430. Second support beam; 432. Water guide; 440. First sealing plate; 450. Second sealing plate; 460. First surface; 42. Receiving space; 43. Drainage outlet; 434. Sub-outlet;

[0065] 50 Water collection tank; 52 Recess; 60 Water guide pipe; 70 Drain valve; 71 Valve core; 712 Sealing surface; 72 Elastic element; 80 Mounting part; 90 Connecting rib; 100 Reinforcing rib; 110 Frame; 112 Circumvention opening; 120 Drainage component; 130 Drain pipe; 140 Battery device;

[0066] Z is the first direction; X is the second direction; Y is the third direction. Detailed Implementation

[0067] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0068] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0069] Currently, with the promotion and popularization of the concept of green development, the application of new energy batteries in daily life and industry is becoming increasingly widespread. Energy storage devices are also being used in more and more scenarios.

[0070] In related technologies, energy storage devices continuously generate a large amount of heat during the charging and discharging process of electrical equipment, causing the internal air temperature of the energy storage device to rise. At night or in cold seasons, the temperature of the energy storage device's casing decreases due to the external environment. When the hot, humid air inside comes into contact with the casing, condensation easily forms on the inner wall of the casing. This condensation typically accumulates at the bottom of the casing, leading to water accumulation. If this water is not drained in time, it increases the risk of electrical short circuits and corrosion damage to internal components, affecting the lifespan and reliability of the energy storage device.

[0071] Based on the above considerations, in order to ensure timely drainage of water inside the enclosure and reduce the risk of electrical short circuits and corrosion damage to internal components caused by water accumulation, embodiments of this application propose an energy storage device. The drainage surface of the base includes at least two slopes, which are inclined relative to a first direction. When condensate drips from inside the enclosure onto the drainage surface, it can flow along the at least two inclined slopes and be smoothly discharged to the outside of the enclosure through the drain outlet. This timely drainage of condensate inside the enclosure reduces the generation of water accumulation, thereby lowering the risk of electrical short circuits and corrosion damage to internal components caused by water accumulation. This helps extend the service life of the energy storage device and improve its reliability.

[0072] The energy storage devices disclosed in this application can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage power stations can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. Wind power generation systems collect wind energy from wind turbines, convert it into electrical energy, and store it in energy storage devices. Solar power generation systems can convert solar energy into electrical energy, store it in energy storage devices, and supply it to users as needed. Mobile power systems can supply power to relevant electrical equipment in areas where the mains power supply cannot reach, such as remote mountainous areas and remote wilderness areas. Temporary power supply systems can provide power to users when the power supply is insufficient.

[0073] The energy storage devices disclosed in this application can be energy storage containers, energy storage cabinets, etc.

[0074] Please refer to Figure 1 and Figure 3 , Figure 1 This is a schematic diagram of the structure of the charging network 1 in some embodiments of this application. Figure 3 This is a schematic diagram of the structure of the energy storage device 4 in some embodiments of this application.

[0075] This application provides a charging network 1, which includes a charging pile 10 for charging electrical equipment. The charging network 1 may also include an energy storage device 4, which is electrically connected to the charging pile 10 and provides power to the charging pile 10.

[0076] It should be noted that the charging pile 10 and the battery cells in the energy storage device 4 are electrically connected via cables, and the battery cells can supply the energy stored in them to the charging pile 10. The charging pile 10 has a connector that can be connected to electrical equipment, thereby replenishing the energy of the equipment. The application of the energy storage device 4 in this charging network 1 can effectively improve the reliability of the charging network 1.

[0077] In a charging network 1, there can be one charging pile 10, and the energy storage device 4 provides power to the one charging pile 10; there can also be multiple charging piles 10, and the energy storage device 4 provides power to multiple charging piles 10.

[0078] As an example, such as Figure 1 As shown, the charging network 1 includes an energy storage device 4 and two charging piles 10, with the energy storage device 4 providing power to the two charging piles 10.

[0079] The energy storage device 4 may include a battery device 140, which is electrically connected to the charging pile 10 so that the battery device 140 can provide power to the charging pile 10.

[0080] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of the energy storage system 2 in some embodiments of this application.

[0081] This application provides an energy storage system 2. The energy storage system 2 includes an energy storage converter 20, which is electrically connected to a generator 3 to convert the electrical power provided by the generator 3. The energy storage system 2 may also include an energy storage device 4, which is electrically connected to the energy storage converter 20. The energy storage converter 20 converts the electrical energy provided by the generator 3 and stores it in the energy storage device 4.

[0082] An energy storage converter 20 is used to connect between the power generation device 3 and the energy storage device 4. The power generation device 3 generates electrical energy and stores the generated electrical energy in the energy storage device 4 via the energy storage converter 20. The application of the energy storage device 4 in this energy storage system 2 can effectively improve the reliability of the energy storage system 2. In specific implementations, the power generation device 3 can be a solar panel, a hydroelectric power generation device, a thermal power generation device, etc. This application does not limit the specific type of the power generation device 3.

[0083] As an example, such as Figure 2 As shown, the energy storage system 2 includes an energy storage device 4 and an energy storage converter 20. The two power generation devices 3 transmit the generated electrical energy to the energy storage converter 20, and the energy storage converter 20 introduces the electrical energy into the energy storage device 4 for storage.

[0084] Please refer to Figure 3 The energy storage device 4 includes a housing 40 and a base 41, which together form a housing space 42, and a battery device 140 is installed in the housing space 42.

[0085] The following reference Figures 3 to 17 The energy storage device 4 according to the first aspect of the present application is described below. Figure 4 This is one of the structural schematic diagrams of the drainage surface 410 in some embodiments of this application. Figure 5 This is the second schematic diagram of the structure of the drainage surface 410 in some embodiments of this application. Figure 6 This is the third of several schematic diagrams showing the structure of the drainage surface 410 in some embodiments of this application. Figure 7 This is one of the partial structural schematic diagrams of the base 41 in some embodiments of this application. Figure 8 This is a second partial structural schematic diagram of the base 41 in some embodiments of this application. Figure 9 This is a partial exploded view of the base 41 in some embodiments of this application. Figure 10 This is the third partial structural schematic diagram of the base 41 in some embodiments of this application. Figure 11 This is one of the structural schematic diagrams of the base 41 in some embodiments of this application. Figure 12 for Figure 11 An enlarged view of the base 41 at point A in the illustrated embodiment. Figure 13 This is a second schematic diagram of the structure of the base 41 in some embodiments of this application. Figure 14 This is the third of several schematic diagrams showing the structure of the base 41 in some embodiments of this application. Figure 15 This is the fourth of several schematic diagrams showing the structure of the base 41 in some embodiments of this application. Figure 16 This is the fifth of several schematic diagrams showing the structure of the base in some embodiments of this application. Figure 17 This is the sixth of several schematic diagrams showing the structure of the base in some embodiments of this application.

[0086] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 11 , Figure 13 , Figure 14 , Figure 15 , Figure 16 and Figure 17 As shown, according to an embodiment of the first aspect of this application, the energy storage device 4 includes a housing 40 and a base 41. Along a first direction, the base 41 is disposed on one side of the housing 40. The base 41 includes a first sealing plate 440 and a second sealing plate 450. The first sealing plate 440 and the housing 40 enclose a receiving space 42. Along the first direction, the second sealing plate 450 is disposed on the side of the first sealing plate 440 away from the receiving space 42 and is spaced apart from the first sealing plate 440. The side of the first sealing plate 440 defining the receiving space 42 includes a drainage surface 410. The drainage surface 410 includes at least two slopes 411. The at least two slopes 411 are inclined relative to the first direction. At least one slope 411 is provided with a drain outlet 43.

[0087] The first direction can be the height direction of the housing 40. Along the first direction, the base 41 is disposed on one side of the housing 40, that is, the base 41 is disposed on one side of the housing 40 in the height direction. Optionally, the base 41 is disposed at the bottom of the housing 40.

[0088] The base 41 includes a first sealing plate 440 and a second sealing plate 450. Since the second sealing plate 450 and the first sealing plate 440 are spaced apart, an insulation space is formed, reducing heat transfer between the inside of the cabinet 40 and the external environment, thereby helping to reduce the generation of condensation on the inner wall of the cabinet 40. That is to say, the first sealing plate 440 is the upper sealing plate and the second sealing plate 450 is the lower sealing plate.

[0089] Optionally, the energy storage device 4 may also include an insulation component, which is disposed between the first sealing plate 440 and the second sealing plate 450, thereby improving the insulation effect inside the housing 40 and further reducing the generation of condensate on the inner wall of the housing 40.

[0090] The drainage surface 410 includes at least two slopes 411, wherein the number of slopes 411 can be two, three, four, five, etc. The at least two slopes 411 can be arranged along a second direction or along a third direction.

[0091] At least one slope 411 is provided with a drain outlet 43, that is, the number of drain outlets 43 is at least one.

[0092] For example, the number of drain outlets 43 is one, that is, at least two slopes 411 share one drain outlet 43.

[0093] For example, there are multiple drain outlets 43, with each slope 411 having at least one drain outlet 43.

[0094] For example, there are multiple drainage outlets 43, and any two adjacent slopes 411 share one drainage outlet 43.

[0095] The first direction is the Z direction. The second direction is the X direction. The third direction is the Y direction.

[0096] In the above embodiment, by providing at least two inclined ramps 411 on the drainage surface 410 of the first sealing plate 440, when the condensate inside the housing 40 drips onto the drainage surface 410, it can flow along the at least two inclined ramps 411 and be smoothly discharged to the outside of the housing 40 through the drain outlet 43, thereby realizing the timely discharge of condensate inside the housing 40, thereby reducing the generation of water accumulation inside the housing 40, and thus reducing the risk of electrical short circuits caused by water accumulation and corrosion damage to internal components of the housing 40, which is beneficial to extending the service life of the energy storage device 4 and improving the reliability of the energy storage device 4.

[0097] Moreover, by setting at least two ramps 411 on the drainage surface 410 to discharge condensate, compared with tilting the entire drainage surface as a whole in related technologies, the condensate in the box 40 can be discharged in a timely and effective manner, while the tilt angle of a single ramp 411 can be reduced accordingly. This allows for sufficient insulation space to be reserved for the base 41, which is beneficial to improving the insulation effect of the energy storage device 4.

[0098] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the side of the second sealing plate 450 facing away from the receiving space 42 is the first surface 460. The distance between the central region of the drainage surface 410 and the first surface 460 in the first direction is greater than the distance between the edge region of the drainage surface 410 and the first surface 460 in the first direction, and the drain outlet 43 is configured near the edge region. Alternatively, the distance between the central region of the drainage surface 410 and the first surface 460 in the first direction is less than the distance between the edge region of the drainage surface 410 and the first surface 460 in the first direction, and the drain outlet 43 is configured near the central region.

[0099] The side of the second sealing plate 450 that is away from the receiving space 42 is the first surface 460. Optionally, the first surface 460 can be the outer surface of the base 41.

[0100] like Figure 4As shown, the distance between the central region of the drainage surface 410 and the first surface 460 in the first direction is greater than the distance between the edge region of the drainage surface 410 and the first surface 460 in the first direction. That is, the central region of the drainage surface 410 is higher and the edge region is lower, thus forming at least two inclined ramps 411 on the drainage surface 410. The drain outlet 43 is located near the edge region with the lower height.

[0101] like Figure 5 and Figure 6 As shown, the distance between the central region of the drainage surface 410 and the first surface 460 in the first direction is less than the distance between the edge region of the drainage surface 410 and the first surface 460 in the first direction. That is, the height of the central region of the drainage surface 410 is lower, and the height of the edge region is higher, thereby forming at least two inclined ramps 411 on the drainage surface 410. The drain outlet 43 is located close to the lower central region.

[0102] Because the drain outlet 43 is located near a lower position, it helps to improve the drainage efficiency of condensate on the drainage surface 410, so as to achieve timely and effective drainage of condensate and reduce the generation of water accumulation inside the box 40.

[0103] In some embodiments, in any two adjacent slopes 411, one slope 411 is provided with a drain outlet 43, and liquid on the other slope 411 can flow into the drain outlet 43.

[0104] In other words, any two adjacent slopes 411 can share a single drainage outlet 43, which helps reduce the number of drainage outlets 43, thereby reducing the structural cost and installation complexity of the energy storage device 4.

[0105] For example, any two adjacent slopes 411 include a first slope 412 and a second slope 413. The first slope 412 is provided with a drain outlet 43. When condensate from the inner wall of the housing 40 drips onto the first slope 412 and the second slope 413 respectively, the condensate on the first slope 412 flows along the inclined trend of the first slope 412 and is discharged through the drain outlet 43. The condensate on the second slope 413 flows along the inclined trend of the second slope 413 and flows out through the drain outlet 43 on the first slope 412.

[0106] For example, the second slope 413 is provided with a drain outlet 43. When condensate from the inner wall of the housing 40 drips onto the first slope 412 and the second slope 413 respectively, the condensate on the second slope 413 flows along the inclined trend of the second slope 413 and is discharged through the drain outlet 43. The condensate on the first slope 412 flows along the inclined trend of the first slope 412 and flows out through the drain outlet 43 on the second slope 413.

[0107] like Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 11 and Figure 15 As shown, in some embodiments, the side of the second sealing plate 450 facing away from the receiving space 42 is the first surface 460. Any two adjacent ramps 411 include a first ramp 412 and a second ramp 413. The distance between the first ramp 412 and the first surface 460 in the first direction gradually decreases towards the second ramp 413. The distance between the second ramp 413 and the first surface 460 in the first direction gradually decreases towards the first ramp 412.

[0108] In other words, the ends of the first slope 412 and the second slope 413 that are close to each other are inclined downwards, meaning that any two adjacent slopes 411 are inclined in opposite directions. Optionally, the first slope 412 and the second slope 413 are symmetrically arranged in the direction of their arrangement. That is, the slopes of the first slope 412 and the second slope 413 are opposite.

[0109] By setting any two adjacent slopes 411 to be tilted in opposite directions, it is convenient for two adjacent slopes 411 to share a single drainage outlet 43.

[0110] like Figure 6 As shown, in some embodiments, the first ramp 412 and the second ramp 413 are connected.

[0111] In other words, the condensate dripping onto the second slope 413 can flow directly to the first slope 412 and be discharged through the drain outlet 43 on the first slope 412, making it convenient for the first slope 412 and the second slope 413 to share a single drain outlet 43. At the same time, it helps to simplify the structure of the energy storage device 4.

[0112] like Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, in some embodiments, the base 41 further includes a first support beam 420 and a water guide pipe 60. The first support beam 420 is disposed between a first slope 412 and a second slope 413. The first support beam 420 has a receiving cavity 422, and the water guide pipe 60 is disposed within the receiving cavity 422, with both ends of the water guide pipe 60 penetrating through the first support beam 420.

[0113] The first support beam 420 can extend along a third direction.

[0114] Understandably, the energy storage device 4 is generally quite heavy. Because a first support beam 420 is installed between the first slope 412 and the second slope 413, the overall structural strength of the base 41 can be improved, thereby increasing the load-bearing capacity of the base 41 and achieving reliable support for the entire energy storage device 4.

[0115] The two ends of the water pipe 60 pass through the first support beam 420 respectively. When the condensate formed inside the box 40 drips onto the second slope 413, the condensate on the second slope 413 flows through the water pipe 60 to the first slope 412 and is discharged to the outside of the box 40 through the drain outlet 43 on the first slope 412. While improving the load-bearing capacity of the base 41, it enables two adjacent slopes 411 to share a drain outlet 43.

[0116] like Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 12 and Figure 15 As shown, in some embodiments, the base 41 further includes a water collection trough 50. The water collection trough 50 is disposed on at least one ramp 411. The water collection trough 50 communicates with a drain outlet 43.

[0117] The number of water collection tanks 50 can be multiple, and multiple water collection tanks 50 are respectively set on multiple slopes 411.

[0118] By setting up a water collection tank 50 on at least one slope 411, condensate on the slope 411 can be collected and temporarily stored. In the case of uneven ground in the area where the energy storage device 4 is located, the overflow of water into other areas can be reduced, which is beneficial to improving the drainage efficiency and reliability of the energy storage device 4.

[0119] Since the water collection tank 50 is connected to the drain outlet 43, when the water in the water collection tank 50 reaches a certain amount, it can be discharged through the drain outlet 43, reducing the risk of corrosion and damage to internal components caused by long-term water accumulation inside the box 40.

[0120] In some embodiments, the drain outlet 43 is provided on the bottom wall or side wall of the water collection tank 50.

[0121] Drainage outlet 43 is provided on the bottom wall of the water collection tank 50, or on the side wall of the water collection tank 50. The specific configuration can be determined according to actual design requirements.

[0122] In other words, integrating the drain outlet 43 into the water collection tank 50 facilitates the smooth discharge of water stored in the water collection tank 50, which helps to further improve the drainage efficiency and reliability of the energy storage device 4.

[0123] In some embodiments, the bottom wall of the water collection tank 50 is provided with a recess 52. The recess 52 extends along a first direction and toward a side away from the receiving space 42. A drain outlet 43 is provided in the recess 52.

[0124] In other words, part of the bottom wall of the water collection tank 50 protrudes outward to form a recess 52, which helps to increase the volume of the water collection tank 50 and achieve effective collection and storage of condensate. In the case of uneven foundation in the area where the energy storage device 4 is located, it can further reduce the overflow of water into other areas.

[0125] like Figure 9 and Figure 12 As shown, in some embodiments, the base 41 further includes a frame 110 and a drain member 120. The frame 110 is provided with a clearance opening 112. The drain member 120 is connected to the frame 110 and forms a water collection trough 50 with the frame 110. The drain member 120 is provided with a recess 52. The recess 52 passes through the clearance opening 112.

[0126] Since the drainage component 120 and the frame 110 form a water collection trough 50, the condensate on the slope 411 can be collected and temporarily stored, which can reduce water overflow.

[0127] Furthermore, since the recess 52 on the drainage component 120 is inserted into the clearance opening 112, it helps to improve the assembly reliability between the drainage component 120 and the frame 110.

[0128] Alternatively, the drain element 120 and the frame 110 can be connected by screws.

[0129] Alternatively, the drain element 120 and the frame 110 can be connected by adhesive.

[0130] like Figure 12 As shown, in some embodiments, the energy storage device 4 further includes a drain valve 70. At least a portion of the drain valve 70 is located within the recess 52. The drain valve 70 is used to open or close the drain outlet 43.

[0131] By setting a drain valve 70, the drain valve 70 opens the drain port 43 when draining, so that the condensate can be discharged in a timely and effective manner. When draining is not required, the drain valve 70 closes the drain port 43, keeping the drain port 43 in a sealed state. This keeps the energy storage device 4 sealed from the outside world, reducing the risk of humid air or rainwater from the outside environment entering the housing 40 through the drain port 43, which could lead to an electrical short circuit inside the housing 40.

[0132] Furthermore, since at least part of the drain valve 70 is located within the recess 52, installation space is provided for the drain valve 70, reducing the space occupied by the drain valve 70 in the water collection tank 50, which is beneficial for the collection and storage of condensate in the water collection tank 50.

[0133] like Figure 12 As shown, in some embodiments, the drain valve 70 includes a valve core 71 and an elastic element 72. The valve core 71 includes a sealing surface 712. The sealing surface 712 is located on the side of the drain outlet 43 away from the water collection tank 50 and is at least partially disposed opposite to the drain outlet 43. The valve core 71 has a first position and a second position. The elastic element 72 is disposed on the valve core 71. Wherein, when the valve core 71 is in the first position, the sealing surface 712 is separated from the drain outlet 43, and the drain outlet 43 is opened. The elastic element 72 is deformable. When the valve core 71 is in the second position, the sealing surface 712 contacts the drain outlet 43, and the drain outlet 43 is closed.

[0134] The sealing surface 712 is located on the side of the drain outlet 43 away from the water accumulation tank 50. In other words, the sealing surface 712 is located on the outside of the drain outlet 43, that is, the sealing surface 712 is located at the bottom outer side of the drain outlet 43.

[0135] Specifically, when the water collection tank 50 contains condensate, the condensate enters the drain outlet 43. Under the action of gravity, the sealing surface 712 moves away from the drain outlet 43 until it reaches the first position. Since the sealing surface 712 separates from the drain outlet 43 at this time, the condensate in the water collection tank 50 can be discharged through the drain outlet 43. Moreover, the elastic element 72 is in a deformed state. After the condensate in the water collection tank 50 is discharged, there is no longer any gravity applied to the sealing surface 712, and under the action of the elastic element 72, the sealing surface 712 moves towards the drain outlet 43 until it reaches the second position, that is, the valve core 71 resets, and the sealing surface 712 seals the drain outlet 43, thereby keeping the drain outlet 43 in a closed state.

[0136] By setting valve core 71 and elastic element 72, drainage can be achieved when needed, and the energy storage device 4 can be kept sealed from the outside when not needed, reducing the risk of humid air or rainwater from the outside environment entering the box 40 through the drain port 43, which could lead to electrical short circuits inside the box 40.

[0137] Optionally, the drain valve 70 is a gravity drain valve.

[0138] Optionally, the elastic element 72 can be a spring or a sheet.

[0139] like Figure 12As shown, in some embodiments, the base 41 further includes a mounting portion 80, a plurality of connecting ribs 90, and a plurality of reinforcing ribs 100. The mounting portion 80 is disposed at the drain outlet 43. The drain valve 70 is movably disposed at the mounting portion 80. The plurality of connecting ribs 90 are respectively located on the outer periphery of the mounting portion 80. The two ends of each connecting rib 90 are respectively connected to the inner walls of the mounting portion 80 and the drain outlet 43 to divide the drain outlet 43 into a plurality of sub-outlets 434. Each sub-outlet 434 is disposed opposite to the sealing surface 712. The plurality of reinforcing ribs 100 are respectively disposed on the side of the plurality of connecting ribs 90 away from the sealing surface 712 and are located on the outer periphery of the mounting portion 80. Each reinforcing rib 100 connects the mounting portion 80, the recess 52, and a connecting rib 90.

[0140] The drain valve 70 is movably disposed on the mounting portion 80, meaning that the valve core 71 moves relative to the mounting portion 80 between a first position and a second position. Optionally, an elastic element 72 is disposed between the valve core 71 and the mounting portion 80. When the sealing surface 712 moves away from the drain outlet 43, the elastic element 72 is in a compressed state.

[0141] By setting multiple connecting ribs 90, the drain outlet 43 is divided into multiple sub-outlets 434, meaning that the multiple sub-outlets 434 are evenly distributed on the outer periphery of the mounting portion 80. On the one hand, this allows for reliable installation of the drain valve 70 on the recess 52. On the other hand, when the water collection tank 50 contains condensate, the condensate enters the multiple sub-outlets 434. The evenly distributed multiple sub-outlets 434 help improve the uniformity of force on the sealing surface 712, reducing the possibility that the sealing surface 712 cannot effectively seal the drain outlet 43 when the valve core 71 is in the second position due to deformation of the sealing surface 712. This further helps to reduce the entry of humid air or rainwater from the external environment into the housing 40 through the drain outlet 43.

[0142] Multiple reinforcing ribs 100 are respectively disposed on the side of multiple connecting ribs 90 away from the sealing surface 712, that is, multiple reinforcing ribs 100 are disposed within the water accumulation tank 50. Since each reinforcing rib 100 connects the mounting part 80, the recess 52 and a connecting rib 90, the structural strength of the installation position of the drain valve 70 can be improved, the deformation of the recess 52, the mounting part 80 and the connecting rib 90 can be reduced, and the situation where the sealing surface 712 cannot effectively seal the drain port 43 when the valve core 71 is in the second position due to the deformation of the recess 52, the mounting part 80 and the connecting rib 90 is further reduced.

[0143] In some embodiments, the water collection tank 50 is cross-sectioned along a direction perpendicular to the first direction, and the cross-sectional shape of the water collection tank 50 includes a triangle, a rectangle, or a trapezoid.

[0144] In other words, the cross-sectional shape of the water collection tank 50 is triangular, rectangular, or trapezoidal to collect and store condensate on the slope 411. The specific shape can be set according to actual needs.

[0145] like Figure 7 As shown, in some embodiments, at least one ramp 411 includes a first end 414 and a second end 415 opposite to each other along a second direction, and a third end 416 and a fourth end 417 opposite to each other along a third direction. Along the first direction, the second end 415 is higher than the first end 414, and the fourth end 417 is higher than the third end 416. A drain outlet 43 is configured near the junction of the first end 414 and the third end 416. The first direction, the second direction, and the third direction intersect each other.

[0146] In other words, at least one corner of the ramp 411 is inclined away from the housing 40, meaning that at least one ramp 411 has an inclined tendency along the second and third directions. When condensate dripping from inside the housing 40 onto the ramp 411, it can flow quickly to the drain outlet 43 via the ramp 411, which helps to further reduce water accumulation inside the housing 40.

[0147] Since the drain outlet 43 is located near the connection between the first end 414 and the third end 416, that is, the drain outlet 43 is located near the lower part of the slope 411, it is beneficial to improve the drainage efficiency and reliability of the energy storage device 4.

[0148] like Figure 11 , Figure 13 , Figure 14 and Figure 15 As shown, in some embodiments, at least two ramps 411 include a first ramp 412, a second ramp 413, and a third ramp 418. The first ramp 412 and the second ramp 413 are arranged along a second direction. The third ramp 418 is arranged with the first ramp 412 along a third direction, and / or with the second ramp 413 along a third direction. Wherein, along the first direction, the end of the third ramp 418 closest to the first ramp 412 is lower than the end of the third ramp 418 furthest from the first ramp 412. Liquid on the third ramp 418 can flow into the first ramp 412 and / or the second ramp 413. The first direction, the second direction, and the third direction intersect each other.

[0149] That is, with the first ramp 412 and the second ramp 413 close to the front of the housing 40, the third ramp 418 is close to the rear of the housing 40.

[0150] By setting the first slope 412, the second slope 413, and the third slope 418, when condensate drips from the inner wall of the box 40 onto the third slope 418, the condensate flows along the inclined trend of the third slope 418 to the first slope 412 and / or the second slope 413, and then flows out through the drain outlet 43 on the first slope 412 and / or the second slope 413. This increases the distribution area of ​​the slope 411 within the box 40, so that condensate dripping from various positions on the inner wall of the box 40 can be discharged in a timely and effective manner.

[0151] Furthermore, with the first slope 412 equipped with a drain outlet 43, that is, at least three slopes 411 share one drain outlet 43, it is beneficial to further reduce the number of drain outlets 43 and reduce the structural cost and installation complexity of the energy storage device 4.

[0152] Optionally, there are multiple first slopes 412 and second slopes 413, and there is a second slope 413 between any two adjacent first slopes 412.

[0153] like Figure 11 , Figure 13 , Figure 14 and Figure 15 As shown, in some embodiments, the base 41 further includes a second support beam 430. The second support beam 430 is disposed between the third slope 418 and the first slope 412, and / or the second support beam 430 is disposed between the third slope 418 and the second slope 413. The base 41 also includes a water guide 432. The water guide 432 is disposed on the second support beam 430. The water guide 432 passes through the second support beam 430 at both ends in the third direction; or one end of the third slope 418 near the second support beam 430 is placed on the second support beam 430.

[0154] By providing a second support beam 430 between the third slope 418 and the first slope 412, and / or between the third slope 418 and the second slope 413, the overall structural strength of the base 41 is further enhanced, thereby improving the load-bearing capacity of the base 41 and achieving reliable support for the energy storage device 4 as a whole. Optionally, there are two second support beams 430, one of which is located between the third slope 418 and the first slope 412, and the other is located between the third slope 418 and the second slope 413. Alternatively, there is one second support beam 430, which extends from the first slope 412 to the second slope 413.

[0155] like Figure 14 and Figure 15As shown, when condensate drips from the inner wall of the housing 40 onto the third slope 418, the condensate flows along the inclined trend of the third slope 418 through the water guide 432 to the first slope 412 and / or the second slope 413, and then flows out through the drain outlet 43 on the first slope 412 and / or the second slope 413.

[0156] Or, such as Figure 13 As shown, the end of the third ramp 418 closest to the second support beam 430 is placed on the second support beam 430. When condensate drips from the inner wall of the housing 40 onto the third ramp 418, the condensate flows directly along the inclined trend of the third ramp 418 to the first ramp 412 and / or the second ramp 413. The specific settings can be configured according to actual needs.

[0157] Optionally, there may be multiple water inlets 432, which are arranged at intervals on the second support beam 430.

[0158] Optionally, the second support beam 430 may extend along a second direction.

[0159] Optionally, there may be multiple second support beams 430, which are arranged along a third direction.

[0160] like Figure 10 As shown, in some embodiments, the energy storage device 4 further includes a drain pipe 130. One end of the drain pipe 130 is connected to a drain outlet 43, and the other end of the drain pipe 130 is connected to the outside.

[0161] In other words, when the condensate inside the housing 40 drips onto the ramp 411, the condensate flows along the inclined trend of the ramp 411 and is discharged to the outside of the housing 40 through the drain pipe 130, so as to realize the timely and effective discharge of the condensate inside the housing 40.

[0162] Optionally, the condensate flowing through drain pipe 130 can be discharged directly to the ground. Alternatively, the condensate flowing through drain pipe 130 can be connected to an external drainage system. This drainage system includes sewers or other drainage structures.

[0163] The following describes a specific embodiment of this application.

[0164] like Figure 7 As shown, the first drainage slope not only slopes in the X direction (second direction) but also in the Y direction (third direction), which can simultaneously prevent water accumulation in the tank due to unevenness in the two directions of the foundation.

[0165] A drainage trough (water collection trough 50) is installed at the end of the drainage ramp (first ramp 412) to improve drainage efficiency. The shape of the drainage trough is not limited and can be rectangular, trapezoidal, or triangular. A gravity drainage valve (drainage valve 70) is installed in the drainage trough, which is normally closed to keep the container (energy storage device 4) sealed from the outside environment. The drainage ramp in the second row can also be designed based on this principle.

[0166] Energy storage containers (energy storage device 4) typically have multiple rows of battery clusters, and the bottom drainage plate (first sealing plate 440) needs to be divided into multiple pieces and welded together. At a certain angle, the wider the drainage sealing plate, the greater the required height difference, which will reduce the height difference between the upper and lower sealing plates. This, in turn, leads to a reduction in the thickness of the rock wool filling between the two sealing plates, which will reduce the thermal insulation performance. Based on this, multiple slopes 411 at the bottom need to be equipped with drainage outlets 43.

[0167] To reduce costs, the ramp 411 in the second column can be tilted to the opposite side. A water collection box (water collection trough 50) can be installed at the end of the drainage ramp. The shape of the water collection box can be designed as rectangular or trapezoidal according to actual needs. The water collection box is set on the drainage ramp of the adjacent column to collect and temporarily store water. The water collection box can be connected to the drainage trough through a water guide pipe 60. When water droplets fall from inside the tank 40 onto the ramp 411 on the bottom plate, they are drained into the water collection box through the ramp 411. A water guide pipe 60 is set at the edge of the water collection box to guide the water into the drainage trough of the adjacent column. Whether using only the drainage method of the first column or combining it with a cost-reducing drainage scheme, both are within the protection scope.

[0168] By setting drainage ramps that slope in both the X and Y directions, the problem of water accumulation caused by uneven foundation can be effectively solved, ensuring that the water inside the container 40 can flow smoothly to the drain valve 70 or the drainage trough (water accumulation trough 50) and be discharged outside the container. This not only improves drainage efficiency but also reduces the risk of equipment damage caused by water accumulation.

[0169] If the energy storage container (energy storage device 4) system is heavy, a crossbeam (second support beam 430) is often added in the middle, and drainage can be divided into two paths: front and rear. For example... Figure 11 As shown, the drainage slope (third slope) has a height difference along the Z direction. The drainage flows directly along the height difference direction, flowing towards the front drainage slope (first slope 412 and / or second slope 413), and then towards the drainage outlet 43.

[0170] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0171] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0172] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0173] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An energy storage device, characterized in that, include: Box; A base, along a first direction, is disposed on one side of the housing. The base includes a first sealing plate and a second sealing plate. The first sealing plate and the housing enclose an accommodating space. Along the first direction, the second sealing plate is disposed on the side of the first sealing plate away from the accommodating space and is spaced apart from the first sealing plate. The side of the accommodating space defined by the first sealing plate includes a drainage surface. The drainage surface includes at least two slopes, and the at least two slopes are inclined relative to the first direction. At least one of the slopes is provided with a drainage outlet.

2. The energy storage device according to claim 1, characterized in that, The side of the second sealing plate that faces away from the receiving space is the first surface; The distance between the central region of the drainage surface and the first surface in the first direction is greater than the distance between the edge region of the drainage surface and the first surface in the first direction, and the drainage outlet is configured to be close to the edge region; Alternatively, the distance between the central region of the drainage surface and the first surface in the first direction is less than the distance between the edge region of the drainage surface and the first surface in the first direction, and the drainage outlet is configured to be close to the central region.

3. The energy storage device according to claim 1, characterized in that, Of any two adjacent slopes, one slope is provided with the drain outlet, and liquid on the other slope can flow into the drain outlet.

4. The energy storage device according to claim 3, characterized in that, The side of the second sealing plate that faces away from the receiving space is the first surface; Any two adjacent slopes include a first slope and a second slope, wherein the distance between the first slope and the first surface in the first direction gradually decreases along the direction closer to the second slope, and the distance between the second slope and the first surface in the first direction gradually decreases along the direction closer to the first slope.

5. The energy storage device according to claim 4, characterized in that, The first slope and the second slope are connected.

6. The energy storage device according to claim 4, characterized in that, The base also includes: A first support beam is disposed between the first slope and the second slope, and the first support beam has a receiving cavity; A water guide pipe is disposed within the receiving cavity, and both ends of the water guide pipe pass through the first support beam.

7. The energy storage device according to any one of claims 1 to 6, characterized in that, The base also includes: A water collection trough is provided on at least one of the slopes, and the water collection trough is connected to the drain outlet.

8. The energy storage device according to claim 7, characterized in that, The drain outlet is located on the bottom or side wall of the water collection tank.

9. The energy storage device according to claim 8, characterized in that, The bottom wall of the water collection tank is provided with a recess, which extends along the first direction and toward the side away from the receiving space, and the drain outlet is provided in the recess.

10. The energy storage device according to claim 9, characterized in that, The base also includes: A frame, wherein the frame is provided with a clearance opening; A drainage component is connected to the frame and forms a water collection trough with the frame. The drainage component has a recess that passes through the clearance opening.

11. The energy storage device according to claim 9, characterized in that, The energy storage device also includes: A drain valve, at least a portion of which is located within the recess, for opening or closing the drain outlet.

12. The energy storage device according to claim 11, characterized in that, The drain valve includes: The valve core includes a sealing surface located on the side of the drain outlet away from the water collection tank and at least partially opposite to the drain outlet. The valve core has a first position and a second position. An elastic element is provided in the valve core; When the valve core is in the first position, the sealing surface separates from the drain outlet, the drain outlet is opened, and the elastic element deforms; when the valve core is in the second position, the sealing surface contacts the drain outlet, and the drain outlet is closed.

13. The energy storage device according to claim 12, characterized in that, The base also includes: The mounting part is provided at the drain outlet, and the drain valve is movably provided at the mounting part; Multiple connecting ribs are located on the outer periphery of the mounting part, and the two ends of each connecting rib are connected to the inner wall of the mounting part and the drain outlet, respectively, so as to divide the drain outlet into multiple sub-ports, and each sub-port is arranged opposite to the sealing surface; Multiple reinforcing ribs are provided on the side of the multiple connecting ribs opposite to the sealing surface and located on the outer periphery of the mounting part. Each reinforcing rib connects the mounting part, the recess, and one connecting rib.

14. The energy storage device according to claim 7, characterized in that, The water collection tank is cross-sectioned along a direction perpendicular to the first direction, and the cross-sectional shape of the water collection tank includes a triangle, a rectangle, or a trapezoid.

15. The energy storage device according to any one of claims 1 to 6, characterized in that, At least one of the slopes includes a first end and a second end opposite to each other along a second direction, and a third end and a fourth end opposite to each other along a third direction. Wherein, along the first direction, the second end is higher than the first end, and the fourth end is higher than the third end, and the drain outlet is configured near the connection between the first end and the third end, and the first direction, the second direction and the third direction intersect each other.

16. The energy storage device according to any one of claims 1 to 6, characterized in that, At least two of the slopes include a first slope, a second slope, and a third slope, wherein the first slope and the second slope are arranged along a second direction, the third slope is arranged along a third direction with the first slope, and / or the third slope is arranged along a third direction with the second slope; Wherein, along the first direction, the end of the third slope closer to the first slope is lower than the end of the third slope farther from the first slope, and liquid on the third slope can flow into the first slope and / or the second slope, and the first direction, the second direction and the third direction intersect each other.

17. The energy storage device according to claim 16, characterized in that, The base also includes: The second support beam is disposed between the third slope and the first slope, and / or the second support beam is disposed between the third slope and the second slope; The base also includes a water guide, which is located on the second support beam and passes through the second support beam at both ends in the third direction; or the end of the third slope near the second support beam is placed on the second support beam.

18. The energy storage device according to any one of claims 1 to 6, characterized in that, The energy storage device also includes: A drain pipe, one end of which is connected to the drain outlet, and the other end of which is connected to the outside.

19. A charging network, characterized in that, Includes the energy storage device as described in any one of claims 1 to 18.

20. An energy storage system, characterized in that, Includes the energy storage device as described in any one of claims 1 to 18.

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