Dot matrix cell element structure, dot matrix radiator and energy storage equipment

Abstract

One or more embodiments of the invention provide a dot matrix cell structure, a dot matrix radiator and an energy storage device, and relates to the technical field of radiators, the dot matrix cell structure comprises a cell frame main body and a resistance reduction sheet, the interior of the cell frame main body is provided with an air outlet channel penetrating along a first set direction, and the resistance reduction sheet is arranged in the air outlet channel. The side wall of the resistance reduction piece comprises an air guide side wall, the air guide side wall comprises a windward side wall, the windward side wall faces the air inlet end of the air outlet channel, and the two ends, in the extending direction, of the windward side wall are located at different positions in the first set direction correspondingly. According to the lattice cell element structure, the windward area can be effectively reduced, the air flowing resistance is effectively reduced, heat transfer can be accelerated, the heat exchange effect is improved, the heat dissipation performance can be remarkably improved under the condition that extra energy consumption is not increased, and a powerful guarantee is provided for stable operation of energy storage equipment.

Description

Technical Field

[0001] The present application relates to the technical field of radiators, and in particular to a lattice cell structure, a lattice radiator and an energy storage device. Background Art

[0002] With the continuous development of the energy storage industry, energy storage inverters, as core equipment in this field, are developing towards high power and miniaturization, while maintaining their high efficiency. This trend inevitably increases the heat generated during the operation of the equipment, thus placing higher requirements on the heat dissipation performance of the energy storage inverter. In the energy storage inverter, the power module undertakes the core task of power conversion, so the effectiveness of its heat dissipation design directly determines the reliability and stability of the entire energy storage system.

[0003] In traditional heat sink design, there are often problems such as limited heat dissipation efficiency and large flow resistance. On the one hand, as the power density of equipment increases, traditional heat sinks are difficult to meet the needs of rapid heat dissipation, which can easily lead to excessive temperature of the equipment, affecting performance and life. On the other hand, large flow resistance not only increases the energy consumption of the heat dissipation system, but may also cause noise and vibration, which has an adverse effect on the use environment and stability of the equipment. Summary of the invention

[0004] One or more embodiments of the present application are intended to solve or at least partially alleviate at least one problem in the related art.

[0005] One or more embodiments of the present application provide a lattice cell structure, including a cell frame body and a drag reduction plate, the interior of the cell frame body having an air outlet channel extending along a first set direction, the drag reduction plate being arranged in the air outlet channel, and the side walls of the drag reduction plate including a wind-guiding side wall, the wind-guiding side wall including a windward side wall, the windward side wall facing the air inlet end of the air outlet channel, and the windward side wall at both ends of its extension direction are respectively at different positions in the first set direction.

[0006] Compared with the related art, one or more embodiments of the present application include at least the following technical effects: For example, for an energy storage system air-cooled heat dissipation system, a radiator having the lattice cell structure uses a hollow design inside the cell frame body to form an air outlet channel. The direction of penetration of the air outlet channel, that is, the first set direction, can be the overall air outlet direction of the heat dissipation system, that is, the overall flow direction of the airflow. In this way, by setting up the air outlet channel inside the cell frame body, the windward area of ​​the lattice cell structure can be cleverly reduced, effectively reducing the air flow resistance. Moreover, the presence of the drag reduction sheet will also divide the airflow in the air outlet channel into multiple relatively small flow areas. The airflow speed and direction in each area are more uniform, making it more orderly, reducing the disordered collision and turbulence of the airflow, thereby reducing the generation of turbulence and vortices. In addition, when the airflow flows on the wall of the hollowed-out cellular frame body, a boundary layer will be formed near the wall of the cellular frame body; in the absence of a drag reduction sheet, as the air continues to flow along the surface of the cellular frame body, the boundary layer will gradually thicken. When it reaches a certain level, the kinetic energy of the air close to the outer layer in the boundary layer is no longer sufficient to overcome the viscous force, and separation will easily occur. Boundary layer separation will cause the air flow to become turbulent, forming a large number of vortices and turbulence, which will not only increase the resistance to air flow, but also reduce the heat dissipation efficiency, while generating a lot of noise. As mentioned above, the existence of the drag reducing sheet can divide the airflow in the air outlet channel into multiple relatively small flow areas, making the airflow speed and direction in each smaller flow area more uniform and orderly. At the same time, the airflow speed will be improved to a certain extent, especially the airflow speed near the drag reducing sheet will increase, so that when the airflow flows through the lattice cell structure, its speed and pressure distribution will change; it helps to maintain the kinetic energy of the airflow in the boundary layer at the wall of each flow area, and the airflow in the boundary layer is more capable of overcoming the obstruction of viscosity and continuing to flow steadily along the wall, rather than easily separating. Ultimately, the relatively stable and orderly flow state of the airflow in the lattice cell structure can be maintained, thereby further reducing the generation of turbulence and vortices in the air outlet channel, and further reducing air flow resistance and noise.

[0007] In addition, the side walls of the drag reduction sheet also include wind-guiding side walls, which can be used to provide guidance for the flow of airflow and further reduce wind resistance; wherein the wind-guiding side walls include windward side walls facing the air inlet end of the air outlet channel, but the two ends of the windward side wall in its extension direction are respectively at different positions in the first set direction, that is, the two ends of the windward side wall in the extension direction are respectively located upstream and downstream of the overall airflow direction, so that the incoming airflow can move from the upstream end of the windward side wall to the downstream end, and then continue to flow backward until it flows out, so as to achieve the effect of further reducing wind resistance.

[0008] Optionally, the side wall of the drag reduction sheet between the side walls of the plate surface on both sides thereof is a plate edge side wall, the drag reduction sheet is connected to one side of the cell frame body through a portion of the plate edge side wall, and the drag reduction sheet is spaced apart from the other side of the cell frame body; wherein the other portions of the plate edge side wall include at least the wind guide side wall, and one side and the other side of the cell frame body are two opposite sides of the cell frame body.

[0009] Optionally, the wind-guiding side wall of the drag-reducing sheet further includes an air outlet side wall connected to the windward side wall, the air outlet side wall faces the air outlet end of the air outlet channel, and a peak end is formed between the windward side wall and the air outlet side wall.

[0010] Optionally, a first groove structure is provided on the windward side wall.

[0011] Optionally, the first groove structure includes a groove sidewall connected to the windward sidewall, and the groove sidewall is set at an obtuse angle to the adjacent windward sidewall; and / or, a plurality of first groove structures are provided, and the plurality of first groove structures are distributed in sequence along the extension direction of the windward sidewall.

[0012] Optionally, the drag reducing plate includes two side plate side walls along its thickness direction, and the two side plate side walls are respectively a first plate side wall and a second plate side wall, and at least one of the first plate side wall and the second plate side wall is provided with a pit structure.

[0013] Optionally, when both the first plate surface side wall and the second plate surface side wall are provided with the pit structure, the pit structure of the first plate surface side wall and the pit structure of the second plate surface side wall are staggered; and / or; a plurality of the pit structures are distributed in sequence along the first set direction at at least one of the first plate surface side wall and the second plate surface side wall; and / or, a plurality of the pit structures are distributed in sequence along a set inclined direction at at least one of the first plate surface side wall and the second plate, wherein the set inclined direction is set at an angle to the first set direction.

[0014] Optionally, the cell frame body includes a first frame side and a second frame side that are arranged opposite to each other, and the first frame side and the second frame side are respectively provided with the drag reduction plate, and the windward side wall of the drag reduction plate on the first frame side is opposite to and spaced from the windward side wall of the drag reduction plate on the second frame side.

[0015] Optionally, the direction of the drag reducing sheet between the side walls of its two side panels is its thickness direction, and the thickness direction of the drag reducing sheet is perpendicular to the first set direction; and / or, the windward side wall is one or more combinations of a curved side wall and a flat side wall, wherein the curved side wall includes an arc-shaped side wall.

[0016] In addition, one or more embodiments of the present application provide a lattice heat sink, comprising the lattice cell structure as described above, wherein a plurality of the lattice cell structures are connected in sequence along a first set direction, and along the first set direction, two adjacent drag reduction plates are butt-jointed together to form a second groove structure.

[0017] The lattice heat sink described in the present application has at least all the technical effects of the lattice cell structure, which will not be repeated here.

[0018] In addition, one or more embodiments of the present application provide an energy storage device, including the lattice radiator as described above.

[0019] The energy storage device described in this application has at least all the technical effects of the lattice radiator, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0021] Figure 1 This is a schematic diagram of the structure of the first lattice cell structure of the embodiment of the present application; Figure 2 This is a schematic diagram of the front view of the first lattice cell structure of the embodiment of the present application; Figure 3 for Figure 2 AA cross-sectional view; Figure 4 This is a schematic diagram of the structure of the second lattice cell structure of the embodiment of the present application; Figure 5 This is a schematic diagram of the front view of the second lattice cell structure of the embodiment of the present application; Figure 6 for Figure 5 A cross-sectional view along the BB direction; Figure 7 for Figure 5 A cross-sectional view taken along the DD direction, wherein the direction of the dotted line n represents the set tilt direction; Figure 8 This is a schematic diagram of the structure of the dot matrix heat sink according to an embodiment of the present application; Fig. 9 This is a front view structural schematic diagram of a dot matrix heat sink according to an embodiment of the present application; Fig.10 for Fig. 9 Cross-sectional view along CC direction.

[0022] Description of reference numerals: 1. Cell frame body; 11. First side of the frame; 12. Second side of the frame; 13. Air outlet channel; 2. Drag reduction plate; 21. Wind guide side wall; 211. Windward side wall; 2111. First groove structure; 2112. Groove side wall; 212. Air outlet side wall; 213. Peak end; 23. Concave pit structure; 24. Plate side wall; 3. Second groove structure. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings showing multiple embodiments of the present application. It should be understood that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without spending creative work will fall within the scope of protection of the present application.

[0024] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those generally understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific implementation methods, and are not intended to limit this application; the terms "including", "comprising", "having", "having", "containing", "including", etc. in the specification and claims of this application and the above-mentioned figure description are open-ended words. Therefore, "including", "comprising", "having" is a method or device with one or more steps or elements, for example, which has one or more steps or elements, but is not limited to having only these one or more elements. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "multiple" is two or more.

[0025] In the description of the present application, it should be understood that the terms "center", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] The Z axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the Y axis in the drawings represents the horizontal direction, and is designated as the left and right positions, and the positive direction of the Y axis represents the left side, and the reverse direction of the Y axis represents the right side; the X axis in the drawings represents the front and back positions, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it 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, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0029] As mentioned above, it should be emphasized that when the term "includes / comprising" is used in this specification, it is used to clearly indicate the presence of the features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps, components or groups of features, integers, steps, components. As used in this application, the singular forms "a", "an" and "the" also include plural forms, unless the context clearly indicates otherwise.

[0030] The words "a" and "an" in this specification may mean one, but may also be consistent with the meaning of "at least one" or "one or more". The term "about" generally means plus or minus 10% of the mentioned value, or more specifically plus or minus 5%. The term "or" used in the claims means "and / or" unless it is clearly stated that it refers to only alternative solutions.

[0031] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0032] One or more embodiments of the present application disclose a lattice cell structure, Figure 1 This is an embodiment of the first lattice cell structure provided by the present application. Figure 1 As shown, the lattice cell structure includes a cell frame body 1 and a drag reduction sheet 2, the interior of the cell frame body 1 has an air outlet channel 13 penetrating along a first set direction, the drag reduction sheet 2 is arranged in the air outlet channel 13, and the side wall of the drag reduction sheet 2 includes a wind guide side wall 21, the wind guide side wall 21 includes a windward side wall 211, the windward side wall 211 faces the air inlet end of the air outlet channel 13, and the windward side wall 211 is at different positions in the first set direction at both ends of its extension direction.

[0033] In at least one embodiment, for example, for an energy storage system air-cooling heat dissipation system, a heat sink having the lattice cell structure uses a hollow design inside the cell frame body 1 to form an air outlet channel 13. The penetration direction of the air outlet channel 13, that is, the first set direction, can be the overall air outlet direction of the heat dissipation system. In this way, by setting the air outlet channel 13 inside the cell frame body 1, the windward area of ​​the lattice cell structure can be cleverly reduced, effectively reducing the air flow resistance. Moreover, the presence of the drag reduction sheet 2 will also divide the airflow in the air outlet channel 13 into a plurality of relatively small flow areas, and the airflow speed and direction in each area are more uniform, making it more orderly, reducing the disordered collision and turbulence of the airflow, thereby reducing the generation of turbulence and vortices.

[0034] It should be noted that when the airflow flows on the wall of the hollowed-out cellular frame body 1, a boundary layer will be formed near the wall of the cellular frame body 1; in the absence of the drag reducing sheet 2, as the air continues to flow along the surface of the cellular frame body 1, the boundary layer will gradually thicken. When it reaches a certain level, the kinetic energy of the air close to the outer layer in the boundary layer is no longer sufficient to overcome the viscous force, and separation will easily occur. Boundary layer separation will cause the air flow to become turbulent, forming a large number of vortices and turbulence, which will not only increase the resistance to air flow, but also reduce the heat dissipation efficiency, while generating greater noise.

[0035] As mentioned above, the existence of the drag reducing sheet 2 can divide the airflow in the air outlet channel 13 into a plurality of relatively small flow areas, so that the airflow speed and direction in each small flow area are more uniform and orderly, and the airflow speed will also be improved to a certain extent, especially the airflow speed near the drag reducing sheet 2 will increase, so that when the airflow flows through the lattice cell structure, its speed and pressure distribution will change; it helps to maintain the kinetic energy of the airflow in the boundary layer at the wall of each flow area, and the airflow in the boundary layer is more capable of overcoming the obstruction of the viscous force and continuing to flow steadily along the wall, rather than easily separating. Ultimately, the relatively stable and orderly flow state of the airflow in the lattice cell structure can be maintained, thereby further reducing the generation of turbulence and vortices in the air outlet channel 13, and further reducing air flow resistance and noise.

[0036] In addition, the side wall of the drag reduction sheet 2 also includes a wind-guiding side wall 21, which can be used to provide a guiding effect on the flow of airflow and further reduce wind resistance; wherein, the wind-guiding side wall 21 includes a windward side wall 211 facing the air inlet end of the air outlet channel 13, but the two ends of the windward side wall 211 in its extension direction are respectively at different positions in the first set direction, that is, the two ends of the windward side wall 211 in the extension direction are respectively located upstream and downstream of the overall airflow direction, so that the incoming airflow can move from the upstream end of the windward side wall 211 to the downstream end, and then continue to flow backward until it flows out, so as to achieve the effect of further reducing wind resistance.

[0037] In at least one embodiment, at least one side of the drag reduction sheet 2 located on the cell frame body 1 is connected and fixed to the cell frame body, for example, the lower side and / or left side / and or right side of the drag reduction sheet 2 is connected and fixed to the cell frame body 1 .

[0038] In some embodiments, Figure 1-2 As shown, the direction between the side walls 24 of the two side surfaces of the drag reducing sheet 2 is its thickness direction, and the thickness direction of the drag reducing sheet 2 is perpendicular to the first set direction.

[0039] In at least one embodiment, Figures 1 to 3As shown, the first set direction may be the front-to-back direction (X-axis direction), and when the thickness direction of the drag reducing sheet 2 is perpendicular to the first set direction, the thickness direction of the drag reducing sheet 2 may be the left-to-right direction (Y-axis direction).

[0040] In at least one embodiment, since the thickness direction of the drag reducing sheet 2 is perpendicular to the first set direction, that is, the thickness direction of the drag reducing sheet 2 is perpendicular to the overall air outlet direction of the heat dissipation system, more heat dissipation area can be increased while increasing a smaller windward area, accelerating heat transfer and improving heat exchange effect; in other words, the drag reducing sheet 2 itself has a certain surface area (the area of ​​the two side plate side walls 24 in the thickness direction of the drag reducing sheet 2 + the area of ​​the plate side wall between the two side plate side walls 24), when the airflow flows through the drag reducing sheet 2, the contact area between the air and the drag reducing sheet 2 and the wall of the cell frame body 1 will be increased, thereby improving the heat exchange effect. The heat dissipation performance can be significantly improved without increasing additional energy consumption, providing a strong guarantee for the stable operation of the energy storage device.

[0041] It should be noted that the "windward side" of the lattice cell structure refers to the side of each component of the lattice cell structure facing the upstream direction of the overall flow direction of the airflow, that is, the side facing the air inlet end of the air outlet channel 13, that is, Figure 2 As shown, Figure 2 yes Figure 1 The front view of the drag reducing sheet 2 is shown in Figure 1-2. In this front view, the visible sides are all windward surfaces. Taking the drag reducing sheet 2 as an example, as shown in Figure 1-2, when the thickness direction of the drag reducing sheet 2 is perpendicular to the first set direction, the side walls 24 of the two sides of the plate surface in the thickness direction of the drag reducing sheet 2 cannot be seen in the front view direction (in the upstream direction of the airflow), that is, the side walls 24 of the two sides of the plate surface in the thickness direction of the drag reducing sheet 2 are not the windward surface of the drag reducing sheet 2. It can be imagined that when the thickness direction of the drag reducing sheet 2 is perpendicular to the first set direction, compared with the cell frame body 1, the drag reducing sheet 2 can increase more heat dissipation area while increasing a smaller windward area.

[0042] In some embodiments, it is not ruled out that the thickness direction of the drag reduction sheet 2 may also form a certain angle with the first set direction. Compared with the prior art, the radiator with this lattice cell structure still has certain advantages in reducing drag and increasing heat exchange effects, and should also fall within the protection scope of this application.

[0043] In some embodiments, Figure 1 As shown, the cell frame body 1 can be a face-centered lattice body composed of connecting beams, and each side thereof is composed of four connecting beams to form two "X"-shaped structures. The cell frame body 1 of this structure is not only simple to form, but also has a relatively light overall weight, and can form the air outlet channel 13 inside to reduce the windward area.

[0044] In at least one embodiment, the drag reduction sheet 2 and the connecting beam on one side of the cell frame body 1 are in contact and connected to each other to form a complete lattice cell structure. Each connecting beam and the drag reduction sheet 2 can be made of aluminum alloy material and can be manufactured using 3D printing technology to ensure the consistency of the entire lattice cell structure, thereby ensuring the uniformity and efficiency of heat conduction.

[0045] In some embodiments, Figure 1-3 As shown, the side wall of the drag reducing sheet 2 between the plate side walls 24 on both sides thereof is a plate edge side wall, the drag reducing sheet 2 is connected to one side of the cell frame body 1 through a portion of the plate edge side wall, and the drag reducing sheet 2 is spaced apart from the other side of the cell frame body 1; wherein the other portions of the plate edge side wall at least include the wind guide side wall 21, and one side and the other side of the cell frame body 1 are opposite sides of the cell frame body 1.

[0046] In at least one embodiment, the drag reducing sheet 2 is connected and fixed to the cell frame body 1 through its plate side wall, rather than connected and fixed to the cell frame body 1 through the plate side wall 24, which can ensure that the airflow in the flow area between the plate side wall 24 of the drag reducing sheet 2 and the cell frame body 1 will not be obstructed, and the windward surface of the entire lattice cell structure is minimized. Specifically, the drag reducing sheet 2 is connected to one side of the cell frame body 1 through part of the plate side wall, while the other side of the cell frame body 1 is spaced apart from the drag reducing sheet 2, and among the other parts of the plate side wall, at least part of the other parts includes the aforementioned wind-guiding side wall 21, wherein one end of the windward side wall 211 in the extension direction (the end upstream in the overall airflow direction) can be connected to one side of the cell frame body 1, but the other end of the windward side wall 211 in the extension direction (the end downstream in the overall airflow direction) is spaced apart from the cell frame body 1. In this way, the incoming airflow can move from the upstream end of the windward side wall 211 to the downstream end, and then continue to flow through the gap between the downstream end of the windward side wall 211 and the cell frame body 1 until it flows out, thereby achieving the effect of further reducing wind resistance.

[0047] In some embodiments, the windward sidewall 211 may be one or more combinations of a curved sidewall and a flat sidewall, wherein the curved sidewall includes an arc-shaped sidewall.

[0048] In at least one embodiment, since the two ends of the windward side wall 211 in its extension direction are respectively at different positions in the first set direction, that is, the overall extension direction of the windward side wall 211 (the direction between the two ends of the windward side wall 211) is set at an angle with the first set direction, the windward side wall 211 of the drag reducing sheet 2 is not perpendicular to the overall flow direction of the airflow (the first set direction), and the windward side wall 211 is preferably an arc-shaped side wall or similar to an arc-shaped side wall, and the convex direction of the arc-shaped side wall or the arc-shaped side wall is toward the outside of the drag reducing sheet 2, that is, the drag reducing sheet 2 is convex outward (rather than concave) at the windward side wall 211. It can be imagined that this windward side wall 211 is a streamlined drag reduction structure. This streamlined structure can better guide the airflow to flow in a specific direction to reduce air flow resistance, and is more conducive to optimizing the air flow field, reducing turbulence and vortices, and further achieving the purposes of drag reduction, noise reduction and enhanced heat exchange.

[0049] Specifically, the arc-shaped windward side wall 211 allows the airflow to transition more smoothly, slows down the change in flow velocity, avoids sudden turns of the airflow and drastic fluctuations in velocity, and greatly reduces the resistance caused by severe friction and separation between the airflow and the surface of the drag reduction plate 2; after the airflow is guided by the arc-shaped windward side wall 211, the entire flow state becomes more regular and orderly, avoiding local airflow congestion or turbulence, and the air flow field distribution is more reasonable; the arc-shaped windward side wall 211 avoids sudden obstruction or diversion of the airflow, so that the air flowing through the front end of the lattice cell structure can flow backward in an orderly manner, which is conducive to optimizing the air flow field, reducing turbulence and vortices, and further achieving the purpose of reducing drag and noise and enhancing heat exchange.

[0050] Among them, according to Bernoulli's principle, the fluid velocity is inversely proportional to the pressure. The arc-shaped windward side wall 211 at the front of the drag reducing sheet 2 can make the process of airflow acceleration smoother. As the airflow accelerates along the arc, the pressure gradually decreases, avoiding the appearance of a local high-pressure area at the front. If the front part is a square or other angular shape, the airflow is blocked and stagnant, forming a high-pressure point, and the subsequent pressure drops sharply. The huge pressure difference between the front and the back will produce greater resistance. The arc-shaped design of the windward side wall 211 allows the pressure to transition evenly from the front to the subsequent part of the drag reducing sheet 2, reducing the resistance caused by this pressure difference.

[0051] Of course, the windward side wall 211 of the drag reducing sheet 2 is not excluded to be a flat side wall, or a combination of a curved side wall and a flat side wall; compared with the prior art, it still has certain advantages in reducing drag and enhancing heat exchange effects, and should also fall within the protection scope of this application.

[0052] In some embodiments, Figure 3As shown, the wind-guiding side wall 21 of the drag-reducing sheet 2 also includes an air outlet side wall 212 connected to the windward side wall 211 , the air outlet side wall 212 faces the air outlet end of the air outlet channel 13 , and a peak end 213 is formed between the windward side wall 211 and the air outlet side wall 212 .

[0053] In at least one embodiment, the tail of the drag reducing sheet 2 (the portion downstream in the airflow direction) is designed with a reduced structure, and after the structure is reduced, an outlet side wall 212 is formed facing the outlet end of the air outlet channel 13, and the outlet side wall 212 is an inclined side wall, and a peak end 213 is formed between it and the windward side wall, which is equivalent to a gradual structural reduction design at the tail of the drag reducing sheet 2. This outlet side wall 212 can make the fluid flow out more smoothly after passing through the lattice cell structure, effectively reducing the wake vortex and reducing the flow resistance. It can be understood that the peak end 213 is the peak end of the wind-guiding side wall 21, and its distance to the side of the cell frame body 1 spaced apart from it is closest (such as Figure 3 As shown, the peak end 213 is the position of the wind guide side wall 21 closest to the upper side of the cell frame body 1), so that when the airflow flows along the windward side wall 211 to the peak end 213, it can flow backward between the air outlet side wall 212 and the side corresponding to the cell frame body 1.

[0054] Specifically, at the tail of the air outlet channel 13, if a large spatial change suddenly occurs, the boundary layer of the wall of the drag reducing sheet 2 and the cell frame body 1 will also be easily separated, thereby generating a large number of vortices and turbulence, increasing the flow resistance; based on this, the tail reduction structure of the drag reducing sheet 2 (the extension direction of the air outlet side wall 212 is set at an angle with the first set direction) can alleviate the separation phenomenon of the boundary layer, and the gradual reduction design of the tail of the drag reducing sheet 2 can allow the fluid in the boundary layer to still have enough energy to maintain attachment to the surface of the object, and orderly detach as the shape slowly changes, which can avoid premature and violent separation to form a turbulent wake, effectively reduce the wake vortex, and reduce the flow resistance. In addition, according to the Bernoulli principle, the gradual reduction design of the tail of the drag reducing sheet 2 can accelerate the flow rate of the fluid at the tail of the air outlet channel 13 and reduce the pressure, so that the fluid can flow out more smoothly from the tail after flowing through the lattice cell structure, which not only ensures the power of the fluid when it flows out, but also reduces the reverse force caused by pressure imbalance, helping to reduce resistance.

[0055] In some embodiments, like the windward side wall 211 , the windward side wall 212 is also one or more combinations of a curved side wall and a flat side wall, wherein the curved side wall includes an arc-shaped side wall.

[0056] In at least one embodiment, the outlet side wall 212 and the windward side wall 211 are preferably arc-shaped side walls or similar to arc-shaped side walls, so as to facilitate the fluid to enter and exit the lattice cell structure better. The radius of the circle where the arc of the outlet side wall 212 is located can be greater than the radius of the circle where the arc of the windward side wall 211 is located, and the size of the outlet side wall 212 in its extension direction can be greater than the size of the windward side wall 211 in its extension direction, which is beneficial to further reduce the drag of the lattice cell structure and enhance the heat exchange.

[0057] In at least one embodiment, Figure 1-3 As shown, the cellular frame body 1 is a rectangular parallelepiped structure as a whole, and its volume is, for example: 10 mm long × 5 mm wide × 5 mm high, wherein its length dimension refers to its dimension on the X-axis, its width dimension refers to its dimension on the Y-axis, and its height dimension refers to its dimension on the Z-axis. Under this spatial volume, there is enough space at the air outlet channel 13 inside the cellular frame body 1 to arrange the drag reduction plate 2 having the above-mentioned shorter windward side wall 211 and the longer air outlet side wall 212.

[0058] In some embodiments, Figure 1 and Figure 3 As shown, a first groove structure 2111 is provided on the windward side wall 211 .

[0059] In at least one embodiment, in a turbulent environment, the drag reduction effect of the windward sidewall 211 with the first groove structure 2111 is better than that of a smooth surface. The first groove structure 2111 similar to the shark skin surface can be manufactured at the windward sidewall 211 of the drag reduction sheet 2 by precision machining. The structure can change the air flow pattern, reduce shear force to reduce resistance, increase surface roughness, expand the contact area with air, promote boundary layer mixing, and further enhance heat exchange.

[0060] It should be noted that, under turbulence, the generation and movement of vortices are important factors leading to increased resistance. On a smooth wall, the velocity gradient of the fluid near the wall is large, and a large velocity gradient will lead to a large wall shear stress, that is, a large frictional resistance. The existence of the first groove structure 2111 essentially increases the contact surface area between the drag reducing sheet 2 and the fluid, and increases the surface roughness. For the boundary layer at the windward side wall 211, the internal fluid flow velocity gradually increases outward from the zero speed of the wall. The design of the first groove structure 2111 breaks the velocity distribution of the conventional boundary layer, allowing part of the fluid to enter the first groove 2111, forming the aforementioned small-scale vortex, reducing the generation of large-scale vortices outside the boundary layer and within the air outlet channel 13, and these small-scale vortices can supplement the kinetic energy in the boundary layer here, making it difficult for the boundary layer to decelerate and separate rapidly due to viscosity, which is equivalent to promoting the mixing of the boundary layer, thereby reducing the overall flow resistance of the airflow. At the same time, these small disturbances can promote faster mixing of cold and hot fluids, further enhancing heat exchange.

[0061] In some embodiments, Figure 1 and Figure 3 As shown, the first groove structure 2111 includes a groove sidewall 2112 connected to the windward sidewall 211, and the groove sidewall 2112 is set at an obtuse angle with the adjacent windward sidewall 211; and / or, the first groove structure 2111 is provided with a plurality of first groove structures 2111, and the plurality of first groove structures 2111 are sequentially distributed along the extension direction of the windward sidewall 211. It can be understood that, when the windward sidewall 211 is an arc-shaped sidewall, the groove sidewall 2112 is set at an obtuse angle with the adjacent windward sidewall 211, which means that the groove sidewall 2112 is set at an obtuse angle with the tangent of the adjacent windward sidewall 211.

[0062] In at least one embodiment, the first groove structure 2111 includes two groove side walls 2112, one is located upstream in the airflow direction, and the other is located downstream in the airflow direction. At least the groove side wall 2112 located upstream of the airflow is set at an obtuse angle to the adjacent windward side wall 211, thereby facilitating the airflow to enter the first groove structure 2111 along the windward side wall 211, so as to further promote boundary layer mixing and delay the separation of the boundary layer of the airflow here.

[0063] Among them, the cross-sectional shape (XZ cross-sectional shape) of the first groove structure 2111 can be triangular, trapezoidal or U-shaped, etc., and is not limited here. The hypotenuse of the first groove structure 2111 (the aforementioned groove sidewall 2112) can guide the fluid to generate orderly vortices, so that the low-speed fluid in the boundary layer is fully mixed with the outer high-speed fluid, and the velocity gradient near the wall surface is effectively reduced; the sharp edge between the groove sidewall 2112 of the first groove structure 2111 and the windward sidewall 211 can change the local velocity distribution and pressure distribution of the fluid, interfere with the formation conditions of large-scale vortices, and make it difficult to form and grow near the groove, thereby reducing the energy dissipation and resistance increase caused by the vortex, and further optimizing the fluid flow performance. In addition, from the perspective of structural strength and processing, the cross-sectional shape of the first groove structure 2111 is preferably a triangle. The triangular geometric shape has good stability and can better withstand external pressure and friction during processing and use; moreover, in micro-machining technology, the triangular first groove structure 2111 is relatively easy to manufacture and has low cost.

[0064] In at least one embodiment, a plurality of first groove structures 2111 may be provided at the windward side wall 211, and the plurality of first groove structures 2111 are sequentially arranged along the curvature direction of the windward side wall 211 to further achieve the purpose of reducing drag and noise and enhancing heat exchange. In particular, when the windward side wall 211 is in the shape of an arc-shaped side wall or is similar to an arc-shaped side wall, the air flow field can be further optimized through the combined effect of the drag reduction of the streamlined structure (the drag reduction effect of the arc-shaped windward side wall 211) and the drag reduction of the plurality of first groove structures 2111, the turbulent area of ​​the air flow can be reduced, so that the air can take away heat more efficiently, reduce energy consumption, and improve the overall performance of the lattice radiator.

[0065] Moreover, through the combined effect of the drag reduction of the streamlined structure (the drag reduction effect of the arc-shaped windward sidewall 211) and the drag reduction of the plurality of first groove structures 2111, according to the Bernoulli principle, it can be known that the pressure resistance can be reduced to a better extent, so that the fluid velocity and pressure change continuously; the boundary layer separation can be suppressed by uniform surface pressure distribution, and the boundary layer separation point can be pushed back; and the fluid can be guided to gradually turn to reduce the generation of vortices. In addition, the windward sidewall 211 of the streamlined structure can create a stable and orderly incoming flow for the first groove structure 2111, so that it can play a better role, reduce fluid turbulence and energy loss, and extend the effective range of the first groove structure 2111, thereby improving the overall drag reduction efficiency.

[0066] In at least one embodiment, the depth direction of each first groove structure 2111 points to the center of the windward side wall 211 , which is unified in structural design and facilitates the design and adjustment of the first groove structure 2111 .

[0067] In some embodiments, Figure 4As shown, the drag reducing sheet 2 includes two side plate surface side walls 24 along its thickness direction, and the two side plate surface side walls 24 are respectively a first plate surface side wall and a second plate surface side wall, and at least one of the first plate surface side wall and the second plate surface side wall is provided with a pit structure 23.

[0068] In at least one embodiment, at least one of the first plate surface side wall and the second plate surface side wall of the drag reducing sheet 2 is provided with a pit structure 23, and the design of the pit structure 23 can increase the heat dissipation area. In addition, by utilizing the fluid mechanics effects such as the vortex formed in the pit structure 23, the boundary layer separation can be delayed, the pressure difference resistance can be reduced, and the composite drag reduction in two dimensions can be achieved to enhance the drag reduction performance. It can be understood that the drag reduction in the first dimension refers to the drag reduction scheme of "windward side wall 211 + first groove structure 2111", and the drag reduction in the second dimension refers to the drag reduction scheme of the pit structure 23.

[0069] Among them, the relatively stable small-scale vortex flow formed inside the pit structure 23 helps to produce a vortex cushion effect (referring to the relatively stable small-scale vortex flow formed in the pit structure 23 on the surface of the drag reduction plate 2), making the velocity distribution of the fluid near the pit more complex but orderly. This ordered velocity distribution helps to reduce the separation and reattachment of the fluid, thereby reducing the pressure difference resistance. At the same time, the vortex generated by the pit structure 23 can delay the separation of the boundary layer, interfere with and decompose the large-scale disordered turbulence, and convert it into multiple small-scale, relatively regular vortices in the pit structure 23, reducing the energy dissipation caused by large-scale turbulence. The pit structure 23 can also constrain the lateral swing of the fluid, making the flow direction of the fluid along the surface of the object more stable and coherent, reducing the energy loss caused by flow deviation and shaking, and further consolidating the drag reduction effect.

[0070] By utilizing the pit structure 23 for drag reduction design in the direction perpendicular to the flow direction, drag reduction design in two dimensions, namely, the lateral direction (the second dimension direction mentioned above) and the longitudinal direction (the first dimension direction mentioned above), is achieved. By combining the drag reduction of the streamlined structure, the drag reduction of the first groove structure 2111, and the drag reduction of the spherical structure of the pit structure 23, the optimization of the lattice radiator structure is achieved, effectively improving the enhanced heat transfer and drag and noise reduction effects of the lattice radiator.

[0071] In some embodiments, both the first plate surface sidewall and the second plate surface sidewall are provided with a pit structure 23, and the pit structure 23 of the first plate surface sidewall is staggered with the pit structure 23 of the second plate surface sidewall.

[0072] In at least one embodiment, the pit structures 23 on the side walls 24 of the two side panels of the drag reduction sheet 2 are staggered rather than correspondingly arranged. In this way, the pit structures 23 can be designed on the side walls 24 of the two side panels of the drag reduction sheet 2 with a thinner thickness without excessively affecting the strength and stability of the drag reduction sheet 2 or even the entire lattice cell structure.

[0073] In some embodiments, Figure 4 and Figure 7 As shown, the plurality of the concave structures 23 are sequentially distributed along the first set direction at at least one of the first plate surface side wall and the second plate surface side wall; and / or the plurality of the concave structures 23 are distributed along the set inclined direction ( Figure 7 The direction of the dotted line n) is sequentially distributed at at least one of the first plate surface side wall and the second plate surface side wall, wherein the set inclination direction is set at an angle to the first set direction.

[0074] In at least one embodiment, by providing a plurality of dimple structures 23 along a first set direction on the plate side wall 24 of the drag reducing sheet 2, during the flow of air, each dimple structure 23 along the first set direction can achieve drag reduction, and drag reduction and other effects can be further optimized. The plurality of dimple structures 23 can also be distributed in sequence on the plate side wall 24 of the drag reducing sheet 2 along a set inclined direction, which is equivalent to providing a plurality of dimple structures 23 in sequence in two dimensional directions of the plate side wall 24, and thus drag reduction and other effects can be further optimized.

[0075] In some embodiments, the radius of the dimple structure 23 may be 0.18 mm, and Figure 7 As shown, when multiple pit structures are sequentially arranged in two dimensional directions of the plate surface side wall 24 of the drag reducing sheet 2, multiple rows of pit structures 23 are formed in the vertical direction of the plate surface side wall 24 of the drag reducing sheet 2, and the vertical spacing H between two adjacent rows of pit structures 23 in the vertical direction can be 0.6mm, and the spacing S between two adjacent pit structures 23 in each row of pit structures 23 in the X-axis direction can be 1mm; thereby further improving the drag reduction effect in the aforementioned second dimensional direction, while ensuring that the drag reducing sheet 2 still has a certain structural strength. Among them, as Figure 7 As shown, since the inclined setting direction is not perpendicular to the first setting direction, under a certain height of the drag reducing sheet 2, more rows of pit structures 23 can be arranged while ensuring the structural strength.

[0076] In some embodiments, Figure 4-7As shown, the cell frame body 1 includes a first frame side 11 and a second frame side 12 that are arranged opposite to each other, and the first frame side 11 and the second frame side 12 are respectively provided with the drag reduction sheet 2, and the windward side wall 211 of the drag reduction sheet 2 on the first frame side 11 is opposite to the windward side wall 211 of the drag reduction sheet 2 on the second frame side 12 and is arranged at intervals.

[0077] like Figure 1-3 As shown, the cell frame body 1 includes a first frame side 11 and a second frame side 12 that are arranged opposite to each other, that is, the second frame side 12 and the first frame side 11 are opposite sides of the cell frame body 1, which may refer to the upper and lower sides shown in the figure, or the left and right sides. As mentioned above, since the drag reduction sheet 2 is connected to one side of the cell frame body 1 through the portion of the plate side wall, and the drag reduction sheet 2 is spaced apart from the other side of the cell frame body 1, it is equivalent to the drag reduction sheet 2 being connected to one side of the opposite sides of the cell frame body 1, and being spaced apart from the other side of the opposite sides of the cell frame body 1; then, in at least some embodiments, the first frame side 11 may be provided with at least one drag reduction sheet 2 (for example, one drag reduction sheet 2), while the second frame side 12 may not be provided with a drag reduction sheet 2.

[0078] In at least one embodiment, when a drag reduction sheet 2 is provided on the first side 11 of the frame and no drag reduction sheet 2 is provided on the second side 12 of the frame, in the direction from the first side 11 of the frame to the second side 12 of the frame, the size of the drag reduction sheet 2 is 85% to 95%, for example 90%, of the size of the air outlet channel 13, so as to increase the heat dissipation area as much as possible without affecting the drag reduction effect of the drag reduction sheet 2.

[0079] As mentioned above, since the drag reducing sheet 2 is connected to one side of the cell frame body 1 through the portion of the plate side wall, and the drag reducing sheet 2 is spaced apart from the other side of the cell frame body 1, it is equivalent to the drag reducing sheet 2 being connected to one side of the two opposite sides of the cell frame body 1, and being spaced apart from the other side of the two opposite sides of the cell frame body 1; then, if Figure 4-7 As shown, in at least some embodiments, at least one drag reducing sheet 2 (for example, one drag reducing sheet 2) may be provided on the first side 11 of the frame, and at least one drag reducing sheet 2 (for example, one drag reducing sheet 2) may be provided on the second side 12 of the frame.

[0080] In at least one embodiment, when both the first side 11 and the second side 12 of the frame are provided with a drag reduction sheet 2, the windward side wall 211 of the drag reduction sheet 2 on the first side 11 of the frame is opposite to and spaced from the windward side wall 211 of the drag reduction sheet 2 on the second side 12 of the frame, that is, the drag reduction sheet 2 on the first side 11 of the frame and the drag reduction sheet 2 on the second side 12 of the frame are symmetrically arranged. This lattice cell structure has higher strength, stability and reliability. This lattice cell structure and lattice radiator can operate stably for a long time in a complex environment, reduce the probability of failure of the energy storage system and the maintenance time cost, and provide a solid guarantee for the stable operation of the energy storage equipment. Furthermore, when both the first side 11 and the second side 12 of the frame are provided with a drag reducing sheet 2, in the direction from the first side 11 to the second side 12 of the frame, the sum of the sizes of the drag reducing sheets 2 on the first side 11 and the second side 12 of the frame is 70% to 90%, for example, 80%, of the size of the air outlet channel 13, and the sizes of the drag reducing sheets 2 on the first side 11 and the second side 12 of the frame are 35% to 45%, for example, 40%, of the size of the air outlet channel 13, respectively. This is to increase the heat dissipation area as much as possible while further improving the drag reduction effect and the stability of the structure. Among them, in the case where both the first side 11 and the second side 12 of the frame are provided with a drag reducing sheet 2, since the size of each drag reducing sheet 2 is relatively low, it is easier to arrange a windward side wall 211 and an air outlet side wall 212 with a certain extension size and a better wind guiding curvature.

[0081] In at least one embodiment, the thickness of the drag reducing sheet 2 can be 0.5 mm; when the drag reducing sheet 2 is provided on one side of the two opposite sides of the cell frame body 1, the depth of the first groove structure 2111 of the drag reducing sheet 2 can be 0.75 mm, and the angle between the two groove side walls 2112 of the cross-section triangle of the first groove structure 2111 is, for example, 60°; when the drag reducing sheet 2 is provided on both sides of the cell frame body 1, the depth of the first groove structure 2111 of the drag reducing sheet 2 can be 0.25 mm. Ultimately, the drag reduction effect can be further improved in the first dimension direction.

[0082] In addition, one or more embodiments of the present application provide a dot matrix heat sink, see Figures 8 to 10 The lattice heat sink includes the lattice cell structure as described above, and a plurality of the lattice cell structures are connected in sequence along a first set direction, and along the first set direction, two adjacent drag reduction sheets 2 are butt-jointed together to form a second groove structure 3.

[0083] In at least one embodiment, the lattice heat sink has all the technical effects of the lattice cell structure, such as Fig.10As shown, in the lattice radiator, in addition to the first groove structure 2111 at the windward side wall 211 at the front of the drag reducing sheet 2, a relatively large second groove structure 3 can be formed between the windward side wall 212 at the tail of the previous drag reducing sheet 2 and the windward side wall 211 at the front of the next drag reducing sheet 2. For the two sizes of groove structures, the first groove structure 2111 with a smaller front end can preliminarily comb and guide the fluid entering the radiator; due to its small size, it can produce relatively fine flow field adjustments, such as guiding the fluid to produce small-scale vortices, so that the fluid forms a relatively stable boundary layer in the area close to the radiator wall, reducing the wall shear stress, thereby reducing the friction resistance. The slightly larger second groove structure 3 can accommodate more fluid, making the flow velocity distribution of the fluid therein more uniform, reducing the resistance caused by sudden changes in flow velocity.

[0084] In summary, the radiator adopts a lattice structure, the interface area of ​​the heat conduction path is large, and the high thermal conductivity aluminum alloy material can accelerate heat transfer, which is more conducive to the efficient conduction of forced air cooling heat. The internal drag reduction sheet 2 is designed using the principles of streamlined drag reduction, smaller groove drag reduction, larger groove drag reduction and pit drag reduction to achieve composite drag reduction, effectively reduce internal wind resistance, and improve air cooling effect. When the heat dissipation system of the energy storage system is in operation, the radiator with enhanced heat dissipation and drag reduction can reduce the energy consumption of the fan, reduce losses, and extend life. At the same time, it reduces noise, saves operating and maintenance costs, and improves economy and practicality. Energy storage equipment usually needs to achieve high energy density storage in a limited space. The efficient heat dissipation and drag reduction lattice radiator of forced air cooling can achieve efficient heat dissipation in a smaller space, which is conducive to the compact design of the energy storage system.

[0085] In addition, one or more embodiments of the present application provide an energy storage device, including the aforementioned lattice radiator. The lattice energy storage device has at least all the technical effects of the lattice radiator, which will not be described in detail here.

[0086] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A lattice cell structure, characterized in that: It includes a cell frame body and a drag reduction sheet, the interior of the cell frame body has an air outlet channel passing through along a first set direction, the drag reduction sheet is arranged in the air outlet channel, and the side wall of the drag reduction sheet includes a wind-guiding side wall, the wind-guiding side wall includes a windward side wall, the windward side wall faces the air inlet end of the air outlet channel, and the two ends of the windward side wall in its extension direction are respectively at different positions in the first set direction.

2. The lattice cell structure according to claim 1, characterized in that: The side wall of the drag reducing sheet between the side walls of the plate surface on both sides is a plate edge side wall, the drag reducing sheet is connected to one side of the cell frame body through a portion of the plate edge side wall, and the drag reducing sheet is spaced apart from the other side of the cell frame body; wherein the other portions of the plate edge side wall include at least the wind guide side wall, and one side and the other side of the cell frame body are two opposite sides of the cell frame body.

3. The lattice cell structure according to claim 1, characterized in that: The wind-guiding side wall of the drag-reducing sheet further comprises an air outlet side wall connected to the windward side wall, the air outlet side wall faces the air outlet end of the air outlet channel, and a peak end is formed between the windward side wall and the air outlet side wall.

4. The lattice cell structure according to claim 1, characterized in that: The windward side wall is provided with a first groove structure.

5. The lattice cell structure according to claim 4, characterized in that: The first groove structure includes a groove sidewall connected to the windward sidewall, and the groove sidewall is set at an obtuse angle to the adjacent windward sidewall; and / or, there are multiple first groove structures, and the multiple first groove structures are distributed in sequence along the extension direction of the windward sidewall.

6. The lattice cell structure according to claim 1, characterized in that: The drag reducing sheet includes two sidewalls along its thickness direction, and the two sidewalls are respectively a first sidewall and a second sidewall, and at least one of the first sidewall and the second sidewall is provided with a pit structure.

7. The lattice cell structure according to claim 6, characterized in that: In the case where both the first plate surface side wall and the second plate surface side wall are provided with the pit structure, the pit structure of the first plate surface side wall and the pit structure of the second plate surface side wall are arranged in a staggered manner; and / or; a plurality of the pit structures are sequentially distributed along the first set direction at at least one of the first plate surface side wall and the second plate; And / or, the plurality of pit structures are sequentially distributed along a set inclined direction on at least one of the first plate surface side wall and the second plate surface side wall, wherein the set inclined direction is arranged at an angle to the first set direction.

8. The lattice cell structure according to any one of claims 2 to 7, characterized in that: The cell frame body includes a first frame side and a second frame side that are arranged opposite to each other, and the first frame side and the second frame side are respectively provided with the drag reduction sheet, and the windward side wall of the drag reduction sheet on the first frame side is opposite to the windward side wall of the drag reduction sheet on the second frame side and is arranged at intervals.

9. The lattice cell structure according to any one of claims 1 to 7, characterized in that: The direction of the drag reducing sheet between the side walls of its two side panels is its thickness direction, and the thickness direction of the drag reducing sheet is perpendicular to the first set direction; and / or, the windward side wall is one or more combinations of a curved side wall and a flat side wall, wherein the curved side wall includes an arc-shaped side wall.

10. A lattice radiator, characterized in that: It comprises the lattice cell structure as described in any one of claims 1 to 9, wherein a plurality of the lattice cell structures are sequentially connected along a first set direction, and along the first set direction, two adjacent drag reduction sheets are butted together to form a second groove structure.

11. An energy storage device, characterized in that: It comprises the dot matrix radiator as claimed in claim 10.

Images