Heat dissipation device and energy storage system

Abstract

The present application relates to a heat dissipation device and an energy storage system. The heat dissipation device includes a shell and a partition. The shell includes a wall. The wall encloses a ventilation duct and an opening connected to the ventilation duct. A cavity is arranged in the wall. The partition is arranged in the cavity and connected to the wall to separate the cavity into a buffer cavity and an air outlet cavity. The partition is provided with an air guide port connected to the buffer cavity and the air outlet cavity. Among them, the wall surface facing the ventilation duct is provided with an air inlet connected to the buffer cavity, and the wall surface facing away from the ventilation duct is provided with an air outlet connected to the air outlet cavity. The heat dissipation device and energy storage system in the embodiments of the present application can reduce the structural complexity of the heat dissipation device, reduce the space occupied by the heat dissipation device inside the battery, and improve the heat dissipation effect on the battery.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a heat dissipation device and an energy storage system. Background Art

[0002] As battery energy storage technology develops towards high capacity and compactness, the thermal safety of batteries has become a research focus at this stage. If it cannot be effectively managed and controlled, it will have a negative impact on battery performance, life and even safety.

[0003] In existing energy storage systems, it is common to use an external air conditioner to cool the battery. During the air cooling process, the cooling air blown directly from the air conditioner needs to be subjected to static pressure treatment to achieve uniform cooling air discharge. However, after adding the static pressure structure, the overall structure of the heat dissipation device is relatively complex, which occupies a large space in the energy storage system and affects the heat dissipation effect of the battery. Utility Model Content

[0004] The embodiments of the present application provide a heat dissipation device and an energy storage system, which can reduce the structural complexity of the heat dissipation device, reduce the space occupied by the heat dissipation device inside the battery, and improve the heat dissipation effect on the battery.

[0005] On the one hand, according to an embodiment of the present application, a heat dissipation device is proposed, including: a shell, including a wall portion, the wall portion encloses a ventilation duct and an opening connected to the ventilation duct, and a cavity is arranged in the wall portion; a partition portion, arranged in the cavity and connected to the wall portion, so as to separate the cavity into a buffer cavity and an air outlet cavity, and an air guide port connecting the buffer cavity and the air outlet cavity is arranged on the partition portion; wherein, an air inlet connected to the buffer cavity is arranged on the wall surface of the wall portion facing the ventilation duct, and an air outlet connected to the air outlet cavity is arranged on the wall surface of the wall portion facing away from the ventilation duct.

[0006] According to one aspect of the embodiment of the present application, the shell includes a plurality of wall portions, the plurality of wall portions together enclose a ventilation passage, and the ends of the plurality of wall portions enclose a opening.

[0007] According to one aspect of an embodiment of the present application, the multiple wall portions include a first wall portion and a second wall portion, the first wall portion and the second wall portion respectively extend along a first direction and are spaced apart in a second direction, and a ventilation duct extending along the first direction is formed between the first wall portion and the second wall portion.

[0008] According to one aspect of an embodiment of the present application, the shell also includes end plates, which are respectively arranged at the ends of the first wall portion and the second wall portion in their own height directions and connect the first wall portion and the second wall portion, and the end plates and the first wall portion and the second wall portion together enclose a ventilation duct.

[0009] According to one aspect of the embodiment of the present application, a plurality of partitions are arranged in the cavity, the plurality of partitions are arranged at intervals along the height direction of the wall in the cavity, and air outlet cavities are respectively arranged on both sides of the buffer cavity in the height direction.

[0010] According to one aspect of an embodiment of the present application, there are multiple buffer cavities, and the multiple buffer cavities are spaced apart in the height direction. Each buffer cavity is correspondingly provided with an air inlet connected thereto, and the multiple air inlets are spaced apart in the height direction.

[0011] According to one aspect of the embodiment of the present application, the air outlet cavities between adjacent buffer cavities are connected, and the buffer cavities and the air outlet cavities are alternately arranged in the height direction.

[0012] According to one aspect of an embodiment of the present application, the wall portion includes a windward plate close to one side of the ventilation duct and a leeward plate away from the ventilation duct, the windward plate and the leeward plate extend along a first direction and are spaced apart in a second direction, a cavity is enclosed between the windward plate and the leeward plate, the spacer is connected between the windward plate and the leeward plate, the air inlet is arranged on the windward plate and the air outlet is arranged on the leeward plate.

[0013] According to one aspect of the embodiment of the present application, the wall portion includes a connecting plate, which is disposed at at least one end of the cavity in the first direction and connected between the windward plate and the leeward plate.

[0014] According to one aspect of an embodiment of the present application, the end of the leeward plate near the opening in the first direction is arranged to extend beyond the end of the windward plate, one end of the connecting plate is connected to the end of the windward plate near the opening in the first direction, and the other end extends toward a side gradually away from the cavity and is connected to the leeward plate, and a plurality of connecting plates are jointly enclosed to form an air duct connected to the ventilation duct, and a size of the air duct gradually decreases in the second direction in the direction of the ventilation duct pointing along the first direction.

[0015] According to one aspect of the embodiment of the present application, the connecting plate includes an arc-shaped plate, and the arc-shaped plate is bent toward the air duct.

[0016] According to one aspect of the embodiments of the present application, a plurality of air outlets are arranged on a wall surface of the wall portion corresponding to the air outlet cavity, and the plurality of air outlets are arranged at intervals in the first direction.

[0017] According to one aspect of an embodiment of the present application, the air outlet includes a first air outlet and a second air outlet, the opening area of ​​the first air outlet is larger than the opening area of ​​the second air outlet, and the first air outlet and the second air outlet are alternately arranged in the first direction.

[0018] According to one aspect of the embodiments of the present application, the air inlet includes a strip-shaped opening, which continuously extends along a first direction on a wall surface of the wall portion and is connected to the buffer cavity.

[0019] According to one aspect of the embodiments of the present application, a plurality of air guide openings are provided on the partition portion, and the plurality of air guide openings are arranged at intervals in the first direction.

[0020] On the other hand, according to an embodiment of the present application, there is provided an energy storage system, comprising a battery and a heat dissipation device according to any of the above embodiments, wherein the heat dissipation device is arranged on one side of the battery, and an air outlet of the heat dissipation device is arranged toward the battery.

[0021] The heat dissipation device in the embodiment of the present application includes a shell and a partition. The wall of the shell is provided with a cavity. The partition divides the cavity into a buffer cavity and an air outlet cavity. After the cooling air blown directly from the air conditioner enters the cavity through the ventilation duct, the cooling air can be statically pressurized through the buffer cavity and the air outlet cavity in turn, so that the cooling air can be evenly blown from the air outlet of the heat dissipation device to the battery. The heat dissipation device in the embodiment of the present application forms a static pressure cavity structure through the buffer cavity and the air outlet cavity, so that the static pressure air duct can be formed by using the structure of the shell itself, which can significantly reduce the structural complexity of the heat dissipation device, and reduce the space occupied by the heat dissipation device inside the battery, thereby improving the heat dissipation effect on the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0023] Figure 1 is a structural schematic diagram of an energy storage system provided by an embodiment of the present application;

[0024] Figure 2 It is a schematic diagram of the structure of a heat dissipation device and a battery cluster provided by an embodiment of the present application;

[0025] Figure 3 is a schematic structural diagram of a heat dissipation device provided by an embodiment of the present application;

[0026] Figure 4 is a partial enlarged view of a heat dissipation device provided by an embodiment of the present application;

[0027] Figure 5 is a front view of a heat dissipation device provided by an embodiment of the present application;

[0028] Figure 6 yes Figure 5 The enlarged view of point A in the middle;

[0029] Figure 7 This is a partial enlarged view of a wall portion provided in an embodiment of the present application.

[0030] In the attached figure:

[0031] 100-Energy storage system;

[0032] 10-heat dissipation device; 20-battery cluster; 210-battery; 30 air conditioner; 310-air conditioner outlet; 320-air conditioner return outlet;

[0033] 1-shell; 11-wall; 11a-first wall; 11b-second wall; 111-windward plate; 112-leeward plate; 113-connecting plate; 12-air inlet; 13-air outlet; 14-end plate;

[0034] 2-partition portion; 21-air guide port;

[0035] K1-ventilation duct; S1-buffer chamber; S2-air outlet chamber;

[0036] X-first direction; Y-second direction; Z-height direction.

[0037] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0038] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0039] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the heat dissipation device and energy storage system of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] In order to better understand this application, Figures 1 to 7 The heat dissipation device and energy storage system in the embodiments of the present application are described in detail.

[0041] See also Figure 1 and Figure 2 , Figure 11 is a schematic diagram of the structure of an energy storage system 100 according to an embodiment of the present application. Figure 2 Schematic diagram of the structure of a heat dissipation device 10 and a battery cluster 20 according to an embodiment of the present application.

[0042] An embodiment of the present application provides an energy storage system 100, including an air conditioner 30, a cabin, and a plurality of columns of battery clusters 20 and a heat dissipation device 10 arranged in the cabin. The battery cluster 20 includes a plurality of batteries 210. The heat dissipation device 10 is arranged on one side of the battery 210 and an air outlet 13 thereon is arranged toward the battery 210. The heat dissipation device 10 is connected to the air outlet 310 of the air conditioner. The cooling air blown out by the air conditioner 30 enters the heat dissipation device 10, is diverted through the air duct in the heat dissipation device 10 and is blown toward each column of battery clusters 20, and then flows back to the air conditioner 30 from the air return port 320 of the air conditioner, thereby realizing the heat dissipation of the battery 210.

[0043] The existing energy storage system 100 is particularly aimed at the inter-row air conditioner 30 in the cabin. The inter-row air conditioner 30 in the cabin is in the form of air supply from the air conditioner 30 to the middle of the cabin and return air on both sides. In order to evenly distribute the cooling air between each battery cluster 20, it is necessary to perform static pressure treatment on the cooling air in the heat dissipation device 10 to reduce the wind speed of the cooling air. In the current heat dissipation device 10, static pressure is mainly achieved by additionally providing a static pressure warehouse or static pressure box and other static pressure structures in the heat dissipation device 10. However, after adding the above-mentioned static pressure structure in the heat dissipation device 10, the overall structure is relatively complex, so that it occupies a large space in the cabin, affecting the heat dissipation effect of the battery 210.

[0044] Therefore, in order to overcome the above-mentioned defects, the embodiment of the present application also provides a new type of heat dissipation device 10, which can be used in the energy storage system 100 of the above-mentioned embodiment, especially the energy storage system 100 using the cabin inter-row air conditioner 30. Of course, it can also be produced or sold separately as an independent component.

[0045] Please also read Figures 1 to 4 , Figure 3 A schematic diagram of the structure of a heat dissipation device 10 provided in an embodiment of the present application is shown. Figure 4 A partially enlarged view of a heat dissipation device 10 provided in one embodiment of the present application is shown.

[0046] The embodiment of the present application provides a heat dissipation device 10, including a housing 1 and a partition 2. The housing 1 includes a wall 11, and the wall 11 encloses a ventilation channel K1 and an opening connected to the ventilation channel K1. A cavity is provided in the wall 11. The partition 2 is provided in the cavity and connected to the wall 11 to separate the cavity into a buffer cavity S1 and an air outlet cavity S2. An air guide 21 connecting the buffer cavity S1 and the air outlet cavity S2 is provided on the partition 2. Among them, an air inlet 12 connected to the buffer cavity S1 is provided on the wall surface of the wall 11 facing the ventilation channel K1, and an air outlet 13 connected to the air outlet cavity S2 is provided on the wall surface of the wall 11 away from the ventilation channel K1.

[0047] In the heat dissipation device 10 provided in the embodiment of the present application, the wall portion 11 of the shell 1 is provided with a cavity, and the cavity is divided into a buffer cavity S1 and an air outlet cavity S2 by a spacer 2. After the cooling air blown directly from the air conditioner 30 enters the cavity through the ventilation duct K1, the cooling air can be buffered and statically pressurized by the buffer cavity S1 and the air outlet cavity S2 in sequence, so that the cooling air can be evenly blown from the air outlet 13 of the heat dissipation device 10 to the battery 210. The heat dissipation device 10 in the embodiment of the present application forms a static pressure cavity structure through a buffer cavity and an air outlet cavity, so that the static pressure air duct can be formed by using the structure of the shell itself. Compared with the existing heat dissipation device 10, the structural complexity of the heat dissipation device 10 can be significantly reduced, and the space occupied by the heat dissipation device 10 inside the battery 210 can be reduced, thereby improving the heat dissipation effect on the battery 210.

[0048] Specifically, after the cooling air blown directly from the air conditioner 30 enters the ventilation duct K1 through the opening, it will first enter the buffer chamber S1 through the air inlet 12 of the wall 11. The cooling air is blocked by the partition 2, and the dynamic pressure is converted into static pressure, thereby reducing the flow rate of the cooling air. Then, the cooling air will enter the air outlet chamber S2 through the air guide port 21 on the partition 2, so that the cooling air maintains a constant static pressure, and then blows toward the battery 210 from the air outlet 13 of the air outlet chamber S2 at a uniform flow rate, so that the battery 210 in the energy storage system 100 dissipates heat evenly and maintains good consistency.

[0049] It can be understood that the static pressure chamber structure formed by the buffer chamber S1 and the air outlet chamber S2 in the embodiment of the present application can form a stable static pressure air duct on the wall 11 of the housing 1, and set up layers of barriers for the cooling air directly blown out by the air conditioner 30, so that after the cooling air passes through the static pressure air duct, the dynamic pressure of the cooling air can be converted into static pressure, and then evenly flows out from the air outlet 13 of the heat dissipation device 10. In addition, by integrating the static pressure chamber structure into the wall 11 of the housing 1, it can also reduce the structural complexity of the heat dissipation device 10 on the basis of achieving uniform heat dissipation of the battery 210, occupying less space and having lower costs.

[0050] See also Figure 3 and Figure 4In some optional embodiments, the housing 1 includes a plurality of wall portions 11 , the plurality of wall portions 11 together enclose a ventilation channel K1 , and ends of the plurality of wall portions 11 enclose an opening.

[0051] By configuring the shell 1 to be composed of a plurality of wall portions 11, each wall portion 11 being provided with the above-mentioned static pressure chamber structure, after the air outlet of the air conditioner 30 enters the ventilation duct K1, the air can be diverted into the static pressure chamber structure of each wall portion 11 and multiple air outlets can be achieved, thereby making it easier to achieve uniform heat dissipation of the batteries 210 in each battery cluster 20.

[0052] Optionally, according to the heat dissipation requirements of the battery 210 in the energy storage system 100, the number of the wall portions 11 can be set to one or more than two. When multiple wall portions 11 are provided, the multiple wall portions 11 can be connected in a fixed manner or in a detachable manner, as long as the heat dissipation requirements of the battery 210 are met.

[0053] In some optional embodiments, the plurality of wall portions 11 include a first wall portion 11a and a second wall portion 11b, the first wall portion 11a and the second wall portion 11b extend respectively along the first direction X and are spaced apart in the second direction Y, and a ventilation duct K1 extending along the first direction X is formed between the first wall portion 11a and the second wall portion 11b.

[0054] In view of the cooling form of the inter-row air conditioner 30 in the cabin, the heat dissipation device 10 can be arranged between two adjacent battery clusters 20 along the second direction Y. The heat dissipation device 10 includes two wall portions 11, and the two wall portions 11 are respectively arranged toward the two battery clusters 20. The first direction X is the extension direction of the same battery cluster 20.

[0055] By providing the first wall portion 11a and the second wall portion 11b, after the air conditioner 30 delivers cooling air into the ventilation duct K1, the cooling air will enter the static pressure cavity structure in the first wall portion 11a and the second wall portion 11b respectively along the second direction Y, and then the cooling air will be evenly blown out from the air outlets 13 of the first wall portion 11a and the second wall portion 11b, and flow back to the air conditioner 30 after passing through the battery clusters 20 on both sides, so as to be more compatible with the cooling form of the inter-row air conditioner 30 in the cabin, thereby improving the heat dissipation effect of each battery 210 in the energy storage system 100.

[0056] Furthermore, by setting the wall portion 11 of the heat dissipation device 10 to be two, it is also easier to form a ventilation duct K1 between the two wall portions 11, and it is also easier to evenly divert the cooling air to the static pressure air ducts in the first wall portion 11a and the second wall portion 11b, thereby achieving uniform air outlet on both sides, making the structure simpler and the heat dissipation effect better, while also improving compatibility with the in-cabin battery 210.

[0057] In some optional embodiments, the shell 1 also includes an end plate 14, which is respectively arranged at the ends of the first wall portion 11a and the second wall portion 11b in its own height direction Z and connects the first wall portion 11a and the second wall portion 11b. The end plate 14 and the first wall portion 11a and the second wall portion 11b together enclose a ventilation duct K1.

[0058] By providing end plates 14 at both ends of the first wall portion 11a and the second wall portion 11b, both ends of the ventilation duct K1 in the height direction Z can be closed, so that the cooling air can be better confined within the ventilation duct K1, thereby increasing the amount of cooling air entering the static pressure cavity structure of the first wall portion 11a and the second wall portion 11b and improving the effective air volume rate.

[0059] Optionally, the end plate 14 can be connected to the ends of the first wall portion 11a and the second wall portion 11b by welding to improve the reliability of the housing 1. In addition, one of the end plate 14 and the wall portion 11 can be provided with a flange, for example, a flange can be provided on the wall portion 11, and the flange is bent to the side surface of the end plate 14 away from the ventilation duct K1 to achieve the connection between the flange and the end plate 14, thereby increasing the connection area between the end plate 14 and the wall portion 11 and improving the reliability of the connection between the end plate 14 and the wall portion 11.

[0060] Optionally, the static pressure chamber structure on the first wall portion 11a and the second wall portion 11b is symmetrically arranged relative to the ventilation duct K1, that is, the air inlet 12 and the air outlet 13 on the first wall portion 11a and the second wall portion 11b are relatively arranged along the second direction Y, thereby making it easier to achieve uniform diversion of cooling air in the ventilation duct K1 and improving the reliability of heat dissipation of the battery 210.

[0061] For ease of description, the static pressure chamber structure on the wall portion 11 is explained below by taking one wall portion 11 as an example.

[0062] Please also read Figures 5 and 6 , Figure 5 A front view of a heat dissipation device 10 according to an embodiment of the present application is shown. Figure 6 Shows Figure 5 Enlarged view of point A in the middle.

[0063] In some optional embodiments, a plurality of partitions 2 are provided in the cavity, and the plurality of partitions 2 are spaced apart in the cavity along the height direction Z of the wall portion 11 , and air outlet cavities S2 are provided on both sides of the buffer cavity S1 in the height direction Z respectively.

[0064] By arranging a plurality of spacers 2 in the cavity, the number of air outlet cavities S2 in the heat dissipation device 10 can be increased, that is, after the cooling air flows through the buffer cavity S1, the air can be discharged from the air outlet cavities S2 on both sides of the buffer cavity S1 in the height direction Z, thereby enabling the heat dissipation device 10 to be discharged at multiple locations, so that the heat dissipation of the plurality of batteries 210 in the energy storage system 100 is uniform and maintains good consistency.

[0065] Optionally, since the heat dissipation device 10 is provided with a plurality of air outlet cavities S2 along the height direction Z, each battery cluster 20 in the energy storage system 100 may include a plurality of batteries 210 arranged along the height direction Z, thereby being able to evenly dissipate heat for the plurality of batteries 210 and improving heat dissipation efficiency. In addition, the air outlet cavities S2 may be provided one-to-one with the batteries 210 to improve the heat dissipation effect of the batteries 210.

[0066] Optionally, one air outlet cavity S2 may be provided on both sides of the buffer cavity S1 in the height direction Z, or multiple air outlet cavities S2 may be provided on both sides of the buffer cavity S1 in the height direction Z. The specific number of air outlet cavities S2 may be adjusted according to actual needs.

[0067] In some optional embodiments, there are multiple buffer cavities S1, and the multiple buffer cavities S1 are spaced apart in the height direction Z. Each buffer cavity S1 is correspondingly provided with an air inlet 12 connected thereto, and the multiple air inlets 12 are spaced apart in the height direction Z.

[0068] On this basis, by setting a plurality of air inlets 12 on the wall surface of the wall portion 11 facing the ventilation duct K1, the cooling air in the ventilation duct K1 can enter the buffer chamber S1 through the plurality of air inlets 12 respectively, thereby reducing the local resistance of the ventilation duct K1 at the air inlet 12.

[0069] Furthermore, by setting a plurality of buffer chambers S1 and making the buffer chambers S1 correspond to the air inlet 12, a plurality of static pressure chamber structures can be formed on the wall portion 11, and the cooling air enters the corresponding static pressure chamber structure from each air inlet 12, thereby making it easier to disperse the cooling air and achieve multiple air outlets. At the same time, it can also reduce the pressure exerted by the cooling air on each buffer chamber S1, thereby improving the reliability of the shell 1.

[0070] In some embodiments, multiple static pressure chamber structures can be arranged independently of each other. For example, each buffer chamber S1 and the air outlet chambers S2 on both sides of the buffer chamber S1 along the height direction Z can be defined as a static pressure chamber structure. Then, when multiple static pressure chamber structures are arranged along the height direction Z, the air outlet chambers S2 of two adjacent static pressure chamber structures are not connected to each other, so as to facilitate the separate control of each static pressure chamber structure.

[0071] In some other embodiments, the air outlet cavities S2 between adjacent buffer cavities S1 are connected, and the buffer cavities S1 and the air outlet cavities S2 are alternately arranged in the height direction Z.

[0072] By alternately arranging the buffer chamber S1 and the air outlet chamber S2 in the height direction Z, it is easier to keep the cooling air at a constant static pressure in each air outlet chamber S2, thereby improving the uniformity of air outlet of the heat dissipation device 10. Moreover, on this basis, by interconnecting the air outlet chambers S2 between adjacent buffer chambers S1, two adjacent static pressure chamber structures can share one air outlet chamber S2, thereby making full use of the cavity space of the wall portion 11, saving space, and at the same time, forming a close fit between the buffer chamber S1 and the air outlet chamber S2, and completing air outlet by sharing the air outlet chamber S2.

[0073] Optionally, the number of the buffer chambers S1 and the air outlet chambers S2 can be adapted and adjusted according to different energy storage systems 100 , as long as the heat dissipation requirements of the batteries 210 in the energy storage system 100 are met.

[0074] See also Figures 3 to 6 In some optional embodiments, the wall portion 11 includes a windward plate 111 close to one side of the ventilation duct K1 and a leeward plate 112 away from the ventilation duct K1. The windward plate 111 and the leeward plate 112 extend along the first direction X and are spaced apart in the second direction Y. A cavity is enclosed between the windward plate 111 and the leeward plate 112. The partition portion 2 is connected between the windward plate 111 and the leeward plate 112. The air inlet 12 is arranged on the windward plate 111 and the air outlet 13 is arranged on the leeward plate 112.

[0075] Among them, the wall portion 11 may specifically include a windward plate 111 and a leeward plate 112 spaced apart along the second direction Y, and the structure is simpler. At the same time, by connecting the partition plate between the windward plate 111 and the leeward plate 112, an H-shaped support structure can be formed, which is more stable and reliable, and also more convenient for introducing the cooling air in the ventilation duct K1 into the cavity between the windward plate 111 and the leeward plate 112.

[0076] In some optional embodiments, the wall portion 11 further includes a connecting plate 113 , which is disposed at at least one end of the cavity in the first direction X and connected between the windward plate 111 and the leeward plate 112 .

[0077] By setting a connecting plate 113 between the windward plate 111 and the leeward plate 112, the connecting plate 113 can be used to seal the upper end of the wall portion 11 in the first direction X, thereby forming a stable one-way air duct in the shell 1 to perform static pressure treatment on the cooling air and increase the effective air output.

[0078] Optionally, the connecting plate 113 may be disposed only at one end of the cavity in the first direction X. When the connecting plate 113 is disposed at one end of the cavity in the first direction X, the connecting plate 113 may be disposed at a side of the cavity close to the opening, so that the cooling air of the air conditioner can more reliably enter the ventilation duct K1 and be discharged through the static pressure cavity structure.

[0079] Optionally, the connecting plates 113 may also be disposed at both ends of the cavity in the first direction X, so as to more easily form a stable air duct in the housing 1 and improve the reliability of air outlet of the heat dissipation device 10 .

[0080] See also Figures 3 to 7 In some optional embodiments, the end of the leeward plate 112 close to the opening in the first direction X is arranged to exceed the end of the windward plate 111, one end of the connecting plate 113 is connected to the end of the windward plate 111 close to the opening in the first direction X, and the other end extends toward a side gradually away from the cavity and is connected to the leeward plate 112, and a plurality of connecting plates 113 are jointly enclosed to form an air duct connected to the ventilation duct K1, and the size of the air duct in the second direction Y gradually decreases in the direction of the ventilation duct K1 along the first direction X.

[0081] Taking the case 1 including the first wall portion 11a and the second wall portion 11b as an example, by setting the end of the leeward plate 112 along the first direction X beyond the end of the windward plate 111, the connecting plate 113 can form an inclined structure, thereby forming an air induction duct with a gradually changing spacing along the second direction Y between the first wall portion 11a and the second wall portion 11b. In addition, in the direction away from the opening, by gradually reducing the spacing of the air induction duct along the second direction Y, it is easier to introduce the cooling air into the ventilation duct K1 through the air induction duct.

[0082] Optionally, the connecting plate 113 includes an arc-shaped plate, which is bent toward the air duct, so that the transition of the air duct can be smoother, and the cooling air can be buffered during the process of being introduced from the air duct into the ventilation duct K1, thereby further improving the static pressure treatment effect of the cooling air.

[0083] After the cooling air is introduced into the ventilation duct K1 from the air duct, it will enter the static pressure cavity structure of the wall portion 11 through the air inlet 12. In some optional embodiments, the air inlet 12 includes a strip opening, which extends continuously along the first direction X on the wall surface of the wall portion 11 and is connected to the buffer cavity S1.

[0084] By configuring the air inlet 12 as a strip-shaped opening extending continuously along the first direction X, it is more convenient to introduce the wind in the ventilation passage K1 into the static pressure cavity structure of the wall portion 11, thereby increasing the air intake volume.

[0085] It can be understood that the strip opening is at least arranged on the windward plate 111. Of course, the strip opening can also be at least partially extended from the windward plate 111 along the first direction X to the connecting plate 113 to further increase the air intake. The specific extension size of the strip opening can be adjusted according to actual needs, and the present application does not make specific limitations on this.

[0086] When the cooling air enters the static pressure cavity structure of the wall portion 11, it will first enter the buffer cavity S1 and then enter the air outlet cavity S2 through the air guide port 21 on the partition portion 2. In some optional embodiments, a plurality of air guide ports 21 are provided on the partition portion 2, and the plurality of air guide ports 21 are arranged at intervals in the first direction X.

[0087] By providing a plurality of air guide ports 21, it is possible to provide a certain barrier to the cooling air entering the buffer chamber S1 through the partition 2, while achieving effective connection between the buffer chamber S1 and the air outlet chamber S2. Furthermore, by arranging the plurality of air guide ports 21 at intervals in the first direction X, it is possible to more easily ensure that the cooling air can evenly enter the air outlet chamber S2.

[0088] Optionally, the air duct 21 can be set to a circular shape, which has a simple structure and is easier to manufacture. Of course, the air duct 21 can also be set to other shapes. At the same time, the size, position and number of the air duct 21 can be adapted and adjusted according to different energy storage systems 100 to meet the ventilation requirements of the cooling air entering the air outlet chamber S2 from the buffer chamber S1.

[0089] When the cooling air enters the air outlet chamber S2 from the buffer chamber S1, it will flow out through the air outlet 13 on the wall portion 11 of the air outlet chamber S2. In some optional embodiments, a plurality of air outlets 13 are provided on the wall surface corresponding to the wall portion 11 of the air outlet chamber S2, and the plurality of air outlets 13 are arranged at intervals in the first direction X.

[0090] By providing a plurality of air outlets 13, it is easier to realize the outlet of cooling air, and by arranging the plurality of air outlets 13 at intervals in the first direction X, it is easier to ensure that the cooling air can flow evenly to each battery cluster 20, thereby improving the uniformity of the air outlet.

[0091] Optionally, the air outlet 13 may be configured as a strip hole, and the strip hole is extended along the height direction Z. The strip hole has a simple structure and is easier to manufacture. Of course, the air outlet 13 may also be configured as other shapes.

[0092] In some optional embodiments, the air outlet 13 includes a first air outlet and a second air outlet, the opening area of ​​the first air outlet is larger than the opening area of ​​the second air outlet, and the first air outlet and the second air outlet are alternately arranged in the first direction X.

[0093] By setting the air outlet 13 as a first air outlet and a second air outlet with different opening areas, different air outlet volumes can be formed, so that they can be arranged according to actual air cooling needs.

[0094] In addition, along the first direction X, the distance between two adjacent air outlets 13 can be the same or different, that is, the air outlet position and air outlet volume can be adjusted by adjusting the arrangement density of the air outlets 13. The size, position and number of the air outlets 13 can be adapted and adjusted according to different energy storage systems 100 to meet the ventilation requirements of the cooling air entering the air outlet cavity S2 from the buffer cavity S1.

[0095] Combine the following Figures 1 to 7 Taking the inter-row air conditioner 30 in the cabin as an example, the working process of the heat dissipation device 10 in the embodiment of the present application is described:

[0096] The cooling air flowing into the air outlet 310 of the air conditioner will be introduced into the ventilation duct K1 through the air duct along the first direction X, and then enter the buffer chamber S1 through the air inlet 12 of the wall 11 along the second direction Y, and then enter the air outlet chamber S2 through the air guide port 21 on the partition 2 along the height direction Z. The buffer chamber S1 and the air outlet chamber S2 can form a static pressure chamber structure, and perform static pressure treatment on the cooling air, thereby reducing the flow rate of the cooling air, so that the cooling air can flow evenly from the air outlet 13 on the air outlet chamber S2 to the battery 210, so that the battery 210 in the energy storage system 100 dissipates heat evenly, and then the cooling air flows back to the air conditioner 30 from the air return ports 320 on both sides to achieve circulation.

[0097] The heat sink 10 in the embodiment of the present application can form a stable static pressure air duct by using the static pressure principle, and set a barrier for the cooling air directly blown out by the air conditioner 30, so that after the cooling air passes through the static pressure air duct, the dynamic pressure of the cooling air can be converted into static pressure, and then evenly flows out from the air outlet 13 of the heat sink 10. In addition, by integrating the static pressure chamber structure into the wall 11 of the housing 1, the structural complexity of the heat sink 10 can be significantly reduced, and the space occupied by the heat sink 10 inside the battery 210 can be reduced, thereby improving the heat dissipation effect on the battery 210.

[0098] The energy storage system 100 provided in the embodiment of the present application, because it includes the heat dissipation device 10 provided in the above embodiments, also has the advantages of simple structure, small volume, low cost, etc., and is easy to promote and use.

[0099] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat dissipation device, characterized in that: include: A housing (1) comprises a wall portion (11), wherein the wall portion (11) encloses a ventilation duct (K1) and an opening communicating with the ventilation duct (K1), and a cavity is provided in the wall portion (11); a partition portion (2) disposed in the cavity and connected to the wall portion (11) so as to separate the cavity into a buffer cavity (S1) and an air outlet cavity (S2); the partition portion (2) is provided with an air guide port (21) communicating with the buffer cavity (S1) and the air outlet cavity (S2); The wall surface of the wall portion (11) facing the ventilation duct (K1) is provided with an air inlet (12) communicating with the buffer chamber (S1), and the wall surface of the wall portion (11) facing away from the ventilation duct (K1) is provided with an air outlet (13) communicating with the air outlet chamber (S2).

2. The heat dissipation device according to claim 1, characterized in that: The shell (1) comprises a plurality of wall portions (11), the plurality of wall portions (11) together enclose the ventilation passage (K1), and the ends of the plurality of wall portions (11) enclose the opening.

3. The heat dissipation device according to claim 2, characterized in that: The plurality of wall portions (11) include a first wall portion (11a) and a second wall portion (11b), wherein the first wall portion (11a) and the second wall portion (11b) respectively extend along a first direction (X) and are spaced apart in a second direction (Y), and a ventilation passage (K1) extending along the first direction (X) is formed between the first wall portion (11a) and the second wall portion (11b).

4. The heat dissipation device according to claim 3, characterized in that: The shell (1) further comprises an end plate (14), wherein the end plate (14) is respectively arranged at the ends of the first wall portion (11a) and the second wall portion (11b) in their own height direction (Z) and connects the first wall portion (11a) and the second wall portion (11b), and the end plate (14) and the first wall portion (11a) and the second wall portion (11b) together enclose the ventilation duct (K1).

5. The heat dissipation device according to claim 1, characterized in that: A plurality of the partitions (2) are arranged in the cavity, and the plurality of the partitions (2) are arranged at intervals in the cavity along the height direction (Z) of the wall portion (11), and the air outlet cavities (S2) are respectively arranged on both sides of the buffer cavity (S1) in the height direction (Z).

6. The heat dissipation device according to claim 5, characterized in that: The buffer chamber (S1) has a plurality of buffer chambers (S1), and the plurality of buffer chambers (S1) are arranged at intervals in the height direction (Z). Each buffer chamber (S1) is correspondingly provided with an air inlet (12) connected thereto, and the plurality of air inlets (12) are arranged at intervals in the height direction (Z).

7. The heat dissipation device according to claim 6, characterized in that: The air outlet cavities (S2) between adjacent buffer cavities (S1) are connected, and the buffer cavities (S1) and the air outlet cavities (S2) are alternately arranged in the height direction (Z).

8. The heat dissipation device according to claim 1, characterized in that: The wall portion (11) comprises a windward plate (111) close to one side of the ventilation duct (K1) and a leeward plate (112) away from the ventilation duct (K1); the windward plate (111) and the leeward plate (112) extend along a first direction (X) and are arranged at intervals in a second direction (Y); the windward plate (111) and the leeward plate (112) enclose the cavity; the partition portion (2) is connected between the windward plate (111) and the leeward plate (112); the air inlet (12) is arranged on the windward plate (111) and the air outlet (13) is arranged on the leeward plate (112).

9. The heat dissipation device according to claim 8, characterized in that: The wall portion (11) comprises a connecting plate (113), wherein the connecting plate (113) is arranged at at least one end of the cavity in the first direction (X) and is connected between the windward plate (111) and the leeward plate (112).

10. The heat dissipation device according to claim 9, characterized in that: The end of the leeward plate (112) close to the opening in the first direction (X) is arranged beyond the end of the windward plate (111); one end of the connecting plate (113) is connected to the end of the windward plate (111) close to the opening in the first direction (X), and the other end extends toward a side gradually away from the cavity and is connected to the leeward plate (112); a plurality of connecting plates (113) are jointly enclosed to form an air duct connected to the ventilation duct (K1); and in a direction pointing toward the ventilation duct (K1) along the first direction (X), the size of the air duct in the second direction (Y) gradually decreases.

11. The heat dissipation device according to claim 10, characterized in that: The connecting plate (113) comprises an arc-shaped plate, and the arc-shaped plate is bent toward the air duct.

12. The heat dissipation device according to claim 1, characterized in that: A plurality of air outlets (13) are arranged on a wall surface of the air outlet cavity (S2) corresponding to the wall portion (11), and the plurality of air outlets (13) are arranged at intervals in a first direction (X).

13. The heat dissipation device according to claim 12, characterized in that: The air outlet (13) comprises a first air outlet and a second air outlet, the opening area of ​​the first air outlet is larger than the opening area of ​​the second air outlet, and the first air outlet and the second air outlet are alternately arranged in the first direction (X).

14. The heat dissipation device according to claim 1, characterized in that: The air inlet (12) comprises a strip-shaped opening, which extends continuously along a first direction (X) on the wall surface of the wall portion (11) and is connected to the buffer cavity (S1).

15. The heat dissipation device according to claim 1, characterized in that: A plurality of air guide ports (21) are provided on the spacer portion (2), and the plurality of air guide ports (21) are arranged at intervals in the first direction (X).

16. An energy storage system, characterized in that: The invention comprises a battery (210) and a heat dissipation device (10) as claimed in any one of claims 1 to 15, wherein the heat dissipation device (10) is arranged on one side of the battery (210), and an air outlet (13) of the heat dissipation device (10) is arranged toward the battery (210).

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