Energy storage box, energy storage device and energy storage system

Abstract

The application relates to an energy storage box, an energy storage device and an energy storage system. A blocking structure is protrudingly arranged on at least one of two surfaces of a first protection piece and a second protection piece which face each other. When the two door bodies are closed, the first protection piece and the second protection piece are overlapped, and the blocking structure is at least partially located between the first protection piece and the second protection piece. When fluid seeps from the joint gap between the first protection piece and the second protection piece, the blocking structure blocks the fluid from flowing in a preset direction and guides the fluid into a drainage channel to be discharged to the outside. In this way, the probability of the fluid entering the inside of the energy storage device from the joint gap is effectively reduced, and the waterproof performance is improved.

Description

Technical Field

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

[0002] With the rapid development of energy storage technology, the reliability requirements for energy storage systems are becoming increasingly stringent. As the core equipment in an energy storage system, the waterproof performance of the energy storage device directly impacts the system's reliability. For ease of maintenance and testing, energy storage devices typically feature a double-door structure. However, the design limitations of traditional double-door structures allow water to easily enter the energy storage device through the gaps between the doors, reducing its waterproof performance. Utility Model Content

[0003] Therefore, it is necessary to provide an energy storage box, energy storage device, and energy storage system to reduce the probability of fluid entering the interior of the energy storage device through the joint gap, which is beneficial to improving waterproof performance.

[0004] In a first aspect, this application provides an energy storage box, which includes: a box body for accommodating an energy storage module; the box body includes two doors distributed along a preset direction, the ends of the two doors are respectively provided on two support members, and the ends of the two doors away from their respective support members are respectively provided with a first protective member and a second protective member, the first protective member and the second protective member are configured to overlap along the thickness direction of the doors when the two doors are closed, and a drainage channel communicating with the outside is formed between the two surfaces of the two doors facing each other; wherein, at least one of the two surfaces of the first protective member and the second protective member facing each other is provided with a blocking structure, the blocking structure is used to prevent at least part of the fluid from flowing along the preset direction and to guide the fluid into the drainage channel.

[0005] The aforementioned energy storage box has a protruding blocking structure on at least one of the two surfaces of the first and second protective components facing each other. When the two doors are closed, the first and second protective components overlap, and the blocking structure is at least partially located between them. When fluid seeps in through the gap between the first and second protective components, the blocking structure prevents the fluid from flowing in a predetermined direction and directs it to a drainage channel for discharge to the outside. This design effectively reduces the probability of fluid entering the energy storage device through the gap, thus improving its waterproof performance.

[0006] In some embodiments, the blocking structure includes a blocking protrusion and a draining protrusion. The blocking protrusion is located above the drainage channel, and the draining protrusion protrudes from the surface of the blocking protrusion facing the drainage channel. This design introduces the blocking protrusion and the draining protrusion. The blocking protrusion prevents fluid above the drainage channel from flowing in a predetermined direction; the draining protrusion guides the blocked fluid into the drainage channel, ensuring that as much of the infiltrated fluid as possible is discharged through the drainage channel, effectively improving waterproofing performance.

[0007] In some embodiments, when the first and second protective members are stacked, the second protective member is closer to the interior of the energy storage box than the first protective member, and the blocking protrusion is located at the end of the first protective member that connects to the door. With this design, when the stacked first protective member is positioned closer to the outside, the blocking protrusion, located near the end of the first protective member that connects to the door, effectively prevents fluid from directly entering the energy storage box from the end of the second protective member away from the door it connects to, further improving waterproofing performance.

[0008] In some embodiments, one of the two surfaces of the first and second protective members facing each other has a blocking structure, and the other has a receiving opening. The portion of the blocking protrusion is configured to be located in the receiving opening when the first and second protective members are overlapped. This design introduces the receiving opening, which facilitates the blocking protrusion extending into the receiving opening when the first and second protective members are overlapped. This not only ensures smooth overlap but also facilitates a tighter fit between the blocking protrusion and the second protective member, thereby improving waterproof performance.

[0009] In some embodiments, the inner wall of the receiving port is provided with a flow-limiting protrusion. The flow-limiting protrusion is located on the side of the blocking protrusion facing the drainage channel and on the side of the guiding protrusion along a preset direction. The flow-limiting protrusion is used to restrict the flow of fluid in the receiving port into the energy storage tank along the preset direction. This design, by introducing the flow-limiting protrusion, prevents the fluid in the receiving port from continuing to flow in the preset direction, effectively reducing the probability of fluid entering the energy storage device in the preset direction and further improving waterproof performance.

[0010] In some embodiments, the projections of the drainage protrusions along a preset direction at least partially overlap with the projections of the flow-limiting protrusions along a preset direction. This design results in the flow-limiting and drainage protrusions being staggered in the height direction, thereby improving the flow-limiting effect between the flow-limiting and drainage protrusions and further enhancing the waterproof performance.

[0011] In some embodiments, the energy storage box further includes a first seal, which is disposed on at least one of the two surfaces of the first protective member and the second protective member facing each other and extends along the height direction of the door. The first seal and the overlapping first and second protective members enclose a drainage channel. This design, by introducing the first seal, restricts the flow of fluid from one side of the first or second protective member to the other in a predetermined direction, reducing the probability of fluid entering the interior of the energy storage device; at the same time, it also helps to improve the sealing performance of the drainage channel, allowing fluid to be stably discharged from the drainage channel.

[0012] In some embodiments, the number of first seals is at least two, with the two first seals located on opposite sides of the drainage channel along a predetermined direction. This design, with first seals on both sides of the drainage channel, further improves the sealing performance of the drainage channel, allowing fluid to be discharged from the drainage channel more stably.

[0013] In some embodiments, the energy storage box further includes a frame and a second seal. Two doors are movably disposed on opposite sides of the frame, and the second seal is disposed circumferentially on the frame and is used to seal against the two doors when they are closed. This design, with the introduction of the second seal, ensures a tight seal between the doors and the frame, reducing the risk of fluid leakage from the gaps between the doors and the frame, and further improving waterproof performance.

[0014] Secondly, this application provides an energy storage device, which includes the energy storage box of any of the above.

[0015] Thirdly, this application provides an energy storage system, which includes the energy storage device described above. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the energy storage box described in some embodiments of this application.

[0017] Figure 2 This is a partial structural diagram of the closed door and frame as described in some embodiments of this application.

[0018] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle circle.

[0019] Figure 4 This is an exploded view of the structure between the door and the frame as described in some embodiments of this application.

[0020] Figure 5 for Figure 4 Enlarged view of the structure at point B in the middle circle.

[0021] 100. Energy storage box; 1a. Box body; 10. Frame; 11. Support component; 12. Flanged edge; 13. Horizontal component; 20. Door; 30. First protective component; 31. Blocking structure; 311. Blocking protrusion; 312. Drainage protrusion; 40. Second protective component; 41. Reception port; 42. Current limiting protrusion; 43. First end; 44. Second end; 50. Drainage channel; 60. First sealing component; 70. Second sealing component; X. Preset direction; Y. Height direction; Z. Thickness direction; 300. Power conversion device; 400. Power generation equipment; 500. Charging pile; 600. Connector. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0023] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0028] Energy storage systems are core equipment in high-voltage power transmission systems, mainly consisting of several energy storage devices. With the rapid development of energy storage technology, the reliability requirements for energy storage systems are becoming increasingly stringent. As a crucial component of an energy storage system, the waterproof performance of the energy storage devices directly impacts the overall reliability of the system.

[0029] In energy storage devices, a double-door structure is typically installed for ease of maintenance or testing. However, water can easily seep into the gaps between the doors, allowing water to enter the interior of the energy storage device and thus reducing its waterproof performance.

[0030] Based on this, and addressing the problem of fluid easily entering the interior of traditional energy storage devices through the joint gap between the double doors, this application provides an energy storage box with a protruding blocking structure on at least one of the two opposing surfaces of the first and second protective members. When the two doors are closed, the first and second protective members overlap, and the blocking structure is at least partially located between them. When fluid seeps in through the joint gap between the first and second protective members, the blocking structure prevents the fluid from flowing in a predetermined direction and directs it to a drainage channel for discharge to the outside. This design effectively reduces the probability of fluid entering the energy storage device through the joint gap, thus improving waterproof performance.

[0031] According to some embodiments of this application, please refer to Figures 1 to 3 This application provides an energy storage box 100, which includes a box body 1a for accommodating an energy storage module. The box body 1a includes two doors 20 distributed along a preset direction X. The ends of the two doors 20 are respectively provided with a first protective member 30 and a second protective member 40. The first protective member 30 and the second protective member 40 are configured to overlap along the thickness direction Z of the doors 20 when the two doors 20 are closed, and a drainage channel 50 communicating with the outside is formed between the two surfaces of the two doors facing each other. At least one of the two surfaces of the first protective member 30 and the second protective member 40 facing each other is provided with a blocking structure 31, which is used to prevent at least part of the fluid from flowing along the preset direction X and to guide the fluid into the drainage channel 50.

[0032] The enclosure 1a refers to the structure that provides installation space for the energy storage module, and its shape may be, but is not limited to, a cuboid, a cylinder, a cube, etc. An energy storage module is a device that stores or outputs electrical energy. For example, an energy storage module may include a battery cluster, a power module, a main control module, etc. The battery cluster may include multiple battery devices, which are connected in series through a busbar to increase the voltage of the energy storage device 100.

[0033] Two doors 20 open or close the openings in the housing 1a, providing a closed environment for the installation of the energy storage module. For example, to facilitate the installation of the doors 20, the housing 1a may include a frame 10, with the two doors 20 respectively movably mounted on the frame 10 to open or close the housing 1a.

[0034] The number of doors 20 is not limited to two; it can also be other numbers. For example, in the energy storage box 100, every two doors 20 form a door structure, and the number of such door structures can be two, three, four, etc.

[0035] When the two doors 20 are closed, the first protective member 30 and the second protective member 40 on the two doors 20 overlap, preventing external fluids, such as rainwater, from directly entering the energy storage box 100. Both the first protective member 30 and the second protective member 40 can be configured as sheet-like structures extending along the height direction Y of the doors 20. A gap may exist between the overlapped first protective member 30 and the second protective member 40, allowing rainwater to enter the energy storage box 100 through this gap. For ease of understanding, taking the first protective member 30 near the outside and the second protective member 40 near the inside of the energy storage box 100 as an example, external rainwater can seep into the space between the first protective member 30 and the second protective member 40 through a gap at the end of the first protective member 30 away from the door 20 it is connected to; then it flows along a predetermined direction X to the end of the second protective member 40 away from the door 20 it is connected to, and from there enters the interior of the energy storage box 100.

[0036] Therefore, in this embodiment, a blocking structure 31 is provided on the first protective member 30. The blocking structure 31 blocks at least part of the rainwater from continuing to flow in the preset direction X and guides the blocked rainwater into the drainage channel 50. Finally, the rainwater is discharged to the outside through the drainage channel 50.

[0037] The blocking structure 31 can be disposed on the first protective member 30 or the second protective member 40; or it can be disposed on both the first protective member 30 and the second protective member 40. When the blocking structure 31 is disposed on both the first protective member 30 and the second protective member 40, after the first protective member 30 and the second protective member 40 are stacked, the blocking structure 31 of the first protective member 30 can seal against each other with the blocking structure 31 of the second protective member 40; or they can be staggered.

[0038] Meanwhile, the blocking structure 31 can be completely located between the first protective member 30 and the second protective member 40; or it can be partially located between the first protective member 30 and the second protective member 40, with a portion extending outside the second protective member 40. Furthermore, the blocking structure 31 can be at least partially located within the drainage channel 50; or it can be completely located outside the drainage channel 50 and above it. When the blocking structure 31 is located above the drainage channel 50, the drainage channel 50 can be sealed on both sides along the preset direction X. For example, the first protective member 30 and the second protective member 40 can be sealed by using protrusions and grooves on both sides of the drainage channel 50; or, sealing material can be provided on at least one side of the drainage channel 50 along the preset direction X, such as sealing rubber, to reduce rainwater passing through the drainage channel 50 along the preset direction X.

[0039] In addition, the shape of the blocking structure 31 can be designed in various ways. For example, the blocking structure 31 can be designed as a square structure, and a strip-shaped or cone-shaped drainage structure can be set at the bottom of the square structure; or the blocking structure 31 can be designed as an arc-shaped plate or a straight plate structure.

[0040] It should also be noted that the drainage channel 50 refers to a structure with a certain space between the first protective member 30 and the second protective member 40, which can extend along the height direction Y of the door body 20. The drainage channel 50 is connected to the outside, facilitating the discharge of incoming fluid to the outside. There are several ways the drainage channel 50 can be connected to the outside, such as: one end of the drainage channel 50 extending to the bottom of the first protective member 30 or the second protective member 40; or, the drainage channel 50 can be connected to the outside through a pipe. To facilitate the entry of fluid from the blocking structure 31 into the drainage channel 50, one end of the drainage channel 50 along the height direction Y of the door body 20 is an open end, and the blocking structure 31 is located above the open end or one end of the blocking structure 31 extends into the open end of the drainage channel 50.

[0041] This design effectively reduces the chance of fluid entering the energy storage device 100 through the joint gap, which helps improve waterproof performance.

[0042] Optionally, according to some embodiments of this application, please refer to Figure 3 The blocking structure 31 includes a blocking protrusion 311 and a draining protrusion 312. The blocking protrusion 311 is located above the drainage channel 50, and the draining protrusion 312 protrudes from the surface of the blocking protrusion 311 facing the drainage channel 50.

[0043] The blocking protrusion 311 is a structure that can prevent at least part of the fluid from flowing along a predetermined direction X. It can be designed in, but is not limited to, square, rectangular, pentagonal, elliptical, etc. The blocking protrusion 311 is positioned above the drainage channel 50. Its purpose is to prevent fluid seeping into the drainage channel 50 from crossing it along the predetermined direction X, thereby reducing the probability of it flowing into the energy storage device 100. Simultaneously, it can also more easily guide the blocked fluid into the drainage channel 50. The blocking protrusion 311 protrudes from the surface of the first protective member 30 or the second protective member 40, and can extend along the height direction Y to the top of the first protective member 30 or the second protective member 40. This reduces the probability of some fluid flowing along the predetermined direction X between the top of the first protective member 30 or the second protective member 40 and the blocking protrusion 311, further improving waterproof performance.

[0044] The drainage protrusion 312 is a structure used to guide the fluid blocked by the blocking protrusion 311 into the drainage channel 50. Its shape can be designed in various ways, such as being conical or rectangular. When the drainage protrusion 312 is conical, the cross-sectional area of ​​the drainage protrusion 312 gradually decreases from the end of the drainage protrusion 312 closest to the blocking protrusion 311 to the end of the drainage protrusion 312 furthest from the blocking protrusion 311.

[0045] Meanwhile, in order to reduce the backflow of fluid from the drainage protrusion 312 to the surface of the blocking protrusion 311 facing the drainage channel 50, in some examples, the drainage protrusion 312 protrudes from the surface of the blocking protrusion 311 facing the drainage channel 50, and the cross-sectional area of ​​the drainage protrusion 312 is smaller than the area of ​​the surface of the blocking protrusion 311 facing the drainage channel 50.

[0046] In addition, the end of the drainage protrusion 312 away from the blocking protrusion 311 can be located above the drainage channel 50 or can extend into the drainage channel 50. At the same time, the drainage protrusion 312 and the blocking protrusion 311 can be connected by bolts, snaps, rivets, welding, adhesives, etc.; of course, they can also be designed as an integrated structure.

[0047] This design incorporates a blocking protrusion 311 and a drainage protrusion 312. The blocking protrusion 311 blocks the flow of fluid above the drainage channel 50 in a preset direction X. The drainage protrusion 312 guides the blocked fluid into the drainage channel 50, allowing the infiltrated fluid to be discharged through the drainage channel 50 as much as possible, effectively improving the waterproof performance.

[0048] Optionally, according to some embodiments of this application, please refer to Figure 4 and Figure 5 When the first protective member 30 and the second protective member 40 are stacked, the second protective member 40 is closer to the interior of the energy storage box 100 than the first protective member 30, and the blocking protrusion 311 is provided at the end where the first protective member 30 is connected to the door 20.

[0049] It can be seen that when the two doors 20 are closed, the first protective member 30 is relatively closer to the outside, and the second protective member 40 is relatively closer to the inside of the energy storage box 100. If the fluid flows along the preset direction X to the end of the second protective member 40 away from the door 20 connected to it, it means that it can easily enter the inside of the energy storage box 100. Therefore, in this embodiment, the blocking protrusion 311 is set at the end of the first protective member 30 connected to the door 20, so that the blocking protrusion 311 is close to the end of the second protective member 40 away from the door 20 connected to it, effectively preventing the fluid from directly entering the energy storage box 100 from the end of the second protective member 40 away from the door 20 connected to it.

[0050] Meanwhile, when fluid seeps from the end of the first protective member 30 away from the door body 20 connected to it into the space between the first protective member 30 and the second protective member 40, the blocking protrusion 311 can prevent the fluid from continuing to flow in the preset direction X and direct it to the drainage protrusion 312.

[0051] In other embodiments, when the first protective member 30 and the second protective member 40 are stacked, the first protective member 30 is closer to the interior of the energy storage box 100 than the second protective member 40, and the blocking protrusion 311 is provided on the first protective member 30 at one end away from the door body 20 connected to it.

[0052] With this design, when the first protective component 30 is placed close to the outside, the blocking protrusion 311 is placed near the end where the first protective component 30 is connected to the door body 20, effectively preventing fluid from entering the energy storage box 100 directly from the end of the second protective component 40 away from the door body 20 it is connected to, thus further improving the waterproof performance.

[0053] Optionally, according to some embodiments of this application, please refer to Figure 3 In the two surfaces of the first protective member 30 and the second protective member 40 facing each other, one of them is provided with a blocking structure 31 and the other is provided with a receiving opening 41. A portion of the blocking protrusion 311 is configured to be located in the receiving opening 41 when the first protective member 30 and the second protective member 40 are overlapped.

[0054] The receiving opening 41 refers to the spatial structure on the first protective member 30 or the second protective member 40 that allows the blocking protrusion 311 to pass through when the first protective member 30 and the second protective member 40 are stacked. For example, the first protective member 30 has a blocking structure 30, and the second protective member 40 has a receiving opening 41. The receiving opening 41 may penetrate the second protective member 40 along the thickness direction Z of the door body 20, or it may not penetrate the second protective member 40, i.e., it is a blind groove structure. When the receiving opening 41 penetrates the second protective member 40 along the thickness direction Z of the door body 20, the blocking protrusion 311 may or may not extend beyond the receiving opening 41.

[0055] When the blocking protrusion 311 is partially located within the receiving opening 41, the first protective member 30 and the second protective member 40 can be tightly joined in the thickness direction Z of the door body 20, reducing the gap between the blocking protrusion 311 and the second protective member 40. Meanwhile, the drainage protrusion 312 may or may not be located within the receiving opening 41. For specific examples, please refer to [reference needed]. Figure 3 Both the portion of the blocking protrusion 311 and the portion of the drainage protrusion 312 are located in the receiving port 41.

[0056] To ensure smoother overlap between the first protective component 30 and the second protective component 40, the size of the receiving opening 41 should be larger than the size of the blocking protrusion 311, that is, a certain gap should be maintained between the inner wall of the receiving opening 41 and the surface of the blocking protrusion 311.

[0057] It should also be noted that when the blocking protrusion 311 extends to the door body 20 at one end along the preset direction X and extends to the top of the first protective member 30 at one end along the height direction Y, the receiving opening 41 is located at one corner of the second protective member 40. For example, the receiving opening 41 extends to the end of the second protective member 40 away from the door body 20 connected to it at one end along the preset direction X, and the receiving opening 41 extends to the top of the second protective member 40 at one end along the height direction Y.

[0058] This design introduces a receiving opening 41, which facilitates the blocking of the protrusion 311 from extending into the receiving opening 41 when the first protective member 30 and the second protective member 40 are overlapped. This not only makes the overlap smooth, but also makes it easier to prevent the protrusion 311 from being more tightly joined with the second protective member 40, which is beneficial to improving the waterproof performance.

[0059] Optionally, according to some embodiments of this application, please refer to Figure 3 The inner wall of the receiving port 41 is provided with a flow-limiting protrusion 42. The flow-limiting protrusion 42 is located on the side of the blocking protrusion 311 facing the drainage channel 50 and on the side of the diversion protrusion 312 along the preset direction X. The flow-limiting protrusion 42 is used to restrict the fluid in the receiving port 41 from flowing into the energy storage box 100 along the preset direction X.

[0060] It is known that when the blocking protrusion 311 is partially located in the receiving port 41, some of the blocked fluid may drip onto the inner wall of the receiving port 41. Therefore, in this embodiment, a flow-limiting protrusion 42 is provided on the inner wall of the receiving port 41, and the flow-limiting protrusion 42 is located on one side of the blocking protrusion 311. In this way, even if the blocked fluid drips onto the inner wall of the receiving port 41, it will be blocked by the flow-limiting protrusion 42, further improving the waterproof performance.

[0061] The flow-limiting protrusion 42 is located on one side of the flow-draining protrusion 312 along a preset direction X, preventing fluid in the receiving port 41 from continuing to flow along the preset direction X into the interior of the energy storage tank 100. The position of the flow-limiting protrusion 42 relative to the flow-draining protrusion 312 can be determined according to the position of the second protective member 40 after it is stacked. For example, the second protective member 40 includes a first end 43 and a second end 44 opposite each other along the preset direction X, with the first end 43 connected to the door body 20. When the stacked second protective member 40 is close to the interior of the energy storage tank 100, the limiting protrusion can be located between the second end 44 and the flow-draining protrusion 312. When the stacked second protective member 40 is close to the outside, the limiting protrusion can be located between the first end 43 and the flow-draining protrusion 312.

[0062] This design introduces a flow-limiting protrusion 42 to prevent the fluid in the receiving port 41 from continuing to flow in the preset direction X, effectively reducing the probability of the fluid entering the energy storage device 100 in the preset direction X, and further improving the waterproof performance.

[0063] Optionally, according to some embodiments of this application, please refer to Figure 3 The projection of the drainage protrusion 312 along the preset direction X at least partially overlaps with the projection of the flow-limiting protrusion 42 along the preset direction X.

[0064] It can be seen that one end of the flow-limiting protrusion 42 can extend to the height position of the flow-draining protrusion 312 in the height direction Y of the door body 20, so that the flow-limiting protrusion 42 and the flow-draining protrusion 312 are staggered in the height direction Y, thereby making the flow-limiting protrusion 42 and the flow-draining protrusion 312 have a better flow-limiting effect on the fluid.

[0065] This design results in the flow-limiting protrusion 42 and the flow-draining protrusion 312 being staggered in the height direction Y, thereby improving the flow-limiting effect of the flow-limiting protrusion 42 and the flow-draining protrusion 312 on the fluid and further enhancing the waterproof performance.

[0066] Optionally, according to some embodiments of this application, please refer to Figure 3 and Figure 4 The energy storage box 100 also includes a first sealing member 60, which is disposed on at least one of the two surfaces of the first protective member 30 and the second protective member 40 facing each other, and extends along the height direction Y of the door body 20. The first sealing member 60 and the overlapping first protective member 30 and second protective member 40 enclose a drainage channel 50.

[0067] The first seal 60 extends along the height direction Y of the door body 20, thus preventing fluid from flowing from one side of the first protective member 30 or the second protective member 40 to the other side along the preset direction X, reducing the probability of fluid entering the energy storage tank 100. Since the first seal 60 and the overlapping first protective member 30 and second protective member 40 form a drainage channel 50, the first seal 60 can be located on at least one side of the drainage channel 50 along the preset direction X, improving the sealing performance of the drainage channel 50 and allowing fluid to drain from it. The first seal 60 can be, but is not limited to, rubber, plastic, etc.

[0068] This design introduces a first seal 60 to restrict the flow of fluid along a preset direction X from one side of the first protective member 30 or the second protective member 40 to the other side, reducing the probability of fluid entering the energy storage tank 100; at the same time, it also helps to improve the sealing of the drainage channel 50, so that the fluid can be stably discharged from the drainage channel 50.

[0069] Optionally, according to some embodiments of this application, please refer to Figure 3and Figure 4 The number of first seals 60 is at least two, with the two first seals 60 located on opposite sides of the drain channel 50 along a preset direction X.

[0070] The number of first sealing elements 60 can be two, three or more. When there are three or more first sealing elements 60, in addition to the first sealing elements 60 located on both sides of the drainage channel 50, the remaining first sealing elements 60 can also be distributed at intervals along a preset direction X between the first protective element 30 and the second protective element 40.

[0071] With this design, first sealing elements 60 are provided on both sides of the drainage channel 50 to further improve the sealing performance of the drainage channel 50, so that the fluid can be discharged from the drainage channel 50 more stably.

[0072] Optionally, according to some embodiments of this application, please refer to Figure 4 and Figure 5 The energy storage box 100 also includes a frame 10 and a second sealing member 70. Two doors 20 are movably disposed on opposite sides of the frame 10. The second sealing member 70 is disposed in the circumference of the frame 10 and is used to seal and cooperate with the two doors 20 when they are in the closed state.

[0073] The frame 10 refers to a structure with an opening. When the two doors 20 are closed on the frame 10, the opening on the frame 10 is closed. When the two doors 20 are opened on the frame 10, the opening on the frame 10 is opened, allowing maintenance personnel to maintain or test the interior of the energy storage box 100 through the opening. There are several ways for the doors 20 to close or open on the support members 11. For example, when the doors 20 are rotatably connected to the support members 11, they can be closed or opened by rotation; or, when the doors 20 are mounted on the support members 11 via slide rails, they can be closed or opened by sliding. In some specific examples, the two doors 20 are rotatably connected to the two support members 11 of the frame 10, respectively. Additionally, in some examples, the frame 10 may also include two transverse members 13, which are spaced apart and connected between the two support members 11 to enclose and form the opening on the frame 10.

[0074] When the two doors 20 are closed together, they press against the second seal 70 of the frame 10, making the doors 20 and the frame 10 fit tightly together, reducing the risk of fluid leakage from the gap between the doors 20 and the frame 10.

[0075] To ensure that the second sealing element 70 is stably pressed between the door body 20 and the frame body 10, the frame body 10 may include two transverse members 13 and a flange 12. The two transverse members 13 are connected between two support members 11 at intervals, and the flange 12 is respectively located on the side of each support member 11 away from the box body 1a and on the side of each transverse member 13 away from the box body 1a. The second sealing element 70 is located on the flange 12.

[0076] This design introduces a second seal 70, which ensures a sealed fit between the door 20 and the frame 10, reducing the risk of fluid leakage from the gap between the door 20 and the frame 10 and further improving waterproof performance.

[0077] According to some embodiments of this application, this application provides an energy storage device, which includes the energy storage box 100 of any of the above.

[0078] According to some embodiments of this application, this application provides an energy storage system, which includes the above-mentioned energy storage devices.

[0079] According to some embodiments of this application, please refer to Figures 1 to 5 This application provides an energy storage box 100, which includes a frame 10, two doors 20, two first sealing members 60, and a second sealing member 70 disposed around the frame 10. The two doors 20 are rotatably connected to both sides of the frame 10, and the ends of the two doors 20 are respectively provided with a first protective member 30 and a second protective member 40. Two first sealing members 60 are spaced apart on the first protective member 30 or the second protective member 40. When the two doors 20 are closed, the first protective member 30 and the second protective member 40 overlap along the thickness direction Z of the door 20. The first protective member 30 is closer to the outside, and the second protective member 40 is closer to the inside of the energy storage box 100. The first protective member 30, the second protective member 40, and the two first sealing members 60 together form a drainage channel 50 communicating with the outside. The first protective member 30 is provided with a blocking structure 31, and the second protective member 40 is provided with a receiving port 41. The blocking structure 31 is partially located in the receiving port 41 and above the drainage channel 50. The blocking structure 31 is used to block at least part of the fluid from continuing to flow in the preset direction X and to guide it into the drainage channel 50.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An energy storage box, characterized in that, The energy storage tank includes: The enclosure is used to house the energy storage modules; The enclosure includes two doors distributed along a preset direction. A first protective member and a second protective member are respectively provided at the ends of the two doors. The first protective member and the second protective member are configured to overlap along the thickness direction of the doors when the two doors are closed, and a drainage channel communicating with the outside is formed between the two surfaces facing each other. Wherein, at least one of the two surfaces of the first protective member and the second protective member facing each other is provided with a blocking structure, the blocking structure is used to prevent at least part of the fluid from flowing along the preset direction and to guide the fluid into the drainage channel.

2. The energy storage box according to claim 1, characterized in that, The blocking structure includes a blocking protrusion and a drainage protrusion. The blocking protrusion is located above the drainage channel, and the drainage protrusion protrudes from the surface of the blocking protrusion facing the drainage channel.

3. The energy storage box according to claim 2, characterized in that, When the first protective member and the second protective member are stacked, the second protective member is closer to the interior of the energy storage box than the first protective member, and the blocking protrusion is located at the end of the first protective member that is connected to the door.

4. The energy storage box according to claim 2, characterized in that, Of the two surfaces of the first protective member and the second protective member facing each other, one is provided with the blocking structure and the other is provided with a receiving opening, and the portion of the blocking protrusion is configured to be located in the receiving opening when the first protective member and the second protective member are overlapped.

5. The energy storage box according to claim 4, characterized in that, The inner wall of the receiving port is provided with a flow-limiting protrusion. The flow-limiting protrusion is located on the side of the blocking protrusion facing the drainage channel and on the side of the guiding protrusion along the preset direction. The flow-limiting protrusion is used to restrict the fluid in the receiving port from flowing into the energy storage box along the preset direction.

6. The energy storage box according to claim 5, characterized in that, The projection of the drainage protrusion along the preset direction at least partially overlaps with the projection of the flow-limiting protrusion along the preset direction.

7. The energy storage box according to any one of claims 1-6, characterized in that, The energy storage box also includes a first sealing element, which is disposed on at least one of the two surfaces of the first protective element and the second protective element facing each other, and extends along the height direction of the door body. The first sealing element and the overlapping first protective element and the second protective element enclose and form the drainage channel.

8. The energy storage box according to claim 7, characterized in that, The number of the first seals is at least two, wherein the two first seals are located on opposite sides of the drainage channel along the preset direction.

9. The energy storage box according to any one of claims 1-6, characterized in that, The energy storage box also includes a frame and a second sealing element. The two doors are movably disposed on opposite sides of the frame, and the second sealing element is disposed circumferentially on the frame and is used to seal and cooperate with the two doors when they are in a closed state.

10. An energy storage device, characterized in that, The energy storage device includes the energy storage box as described in any one of claims 1-9.

11. An energy storage system, characterized in that, The energy storage system includes the energy storage device as described in claim 10.

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