Tray of cooling system and energy storage system

Abstract

The utility model discloses a tray of a cooling system and an energy storage system, the tray is provided with a cooling flow channel, the tray is provided with an inlet and a plurality of outlets, and the inlet and the outlets are respectively communicated with the cooling flow channel. According to the tray of the cooling system, the cooling flow channel is defined through the tray, the integration level of the energy storage system is improved, the manufacturing cost of the energy storage system is reduced, optimization of a cooling medium circulation path is facilitated by optimizing the position of the outlet, and flowing of the cooling medium is more uniform and efficient.

Description

Technical Field

[0001] This application relates to the field of energy storage, and in particular to a tray for a cooling system and an energy storage system. Background Technology

[0002] The principle of an immersion liquid-cooled energy storage system is to completely immerse the energy storage element in a flowing cooling medium, allowing the cooling medium to directly contact and flow with the surface of the energy storage element. During the flow, the cooling medium effectively removes the heat generated by the energy storage element, and the integrated temperature control system dissipates this heat into the air, thereby achieving precise temperature control of the energy storage element.

[0003] In related technologies, energy storage elements and liquid cooling channels are usually set up independently, which increases system costs and limits the optimization of the overall system performance. It can also lead to insufficient optimization of the cooling medium circulation path, resulting in uneven distribution of the cooling medium. This causes some energy storage elements to not be adequately cooled, affecting the service life of the energy storage elements. Utility Model Content

[0004] This application aims to at least address one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a tray for a cooling system. The tray of the cooling system according to an embodiment of this application defines cooling channels, improves the integration of the energy storage system, reduces the manufacturing cost of the energy storage system, and helps to optimize the cooling medium circulation path by optimizing the outlet position, resulting in more uniform and efficient flow of the cooling medium.

[0005] This application also proposes an energy storage system having the aforementioned tray.

[0006] According to an embodiment of the present application, the tray of the cooling system is provided with cooling channels, wherein the tray is provided with an inlet and a plurality of outlets, and the inlet and the outlets are respectively connected to the cooling channels.

[0007] According to the cooling system tray of the embodiment of this application, the cooling flow channel is defined by the tray, which can effectively guide the flow path of the cooling medium. This not only improves the integration of the energy storage system, making the overall structure more compact and efficient, but also reduces the manufacturing cost of the system. By optimizing the position of multiple outlets, the circulation path of the cooling medium can be optimized, making the flow of the cooling medium more uniform and efficient. This helps to achieve uniform distribution of the cooling medium, ensuring that each energy storage element is adequately cooled, thereby extending the service life of the energy storage element and improving the reliability of the entire cooling system.

[0008] In some embodiments, the tray includes a first support beam and at least two second support beams, the first support beam extending along a first direction, the second support beams extending along a second direction, and the second support beams being arranged opposite each other along the first direction. The second support beams are connected to the first support beams, and a first cooling channel corresponding to the first support beam is connected to a second cooling channel corresponding to the second support beam.

[0009] In some embodiments, the first support beam is provided with the inlet, and the second support beam is provided with a plurality of the outlets.

[0010] In some embodiments, an installation space is provided between two adjacent second support beams for installing battery modules, and a liquid-passing gap is formed between two adjacent battery modules, the liquid-passing gap being connected to the outlet.

[0011] In some embodiments, the first support beam includes a first beam body and a plurality of first connecting portions. The first beam body extends along the first direction and is provided with the first cooling channel. The plurality of first connecting portions are disposed on one side of the first support beam and are spaced apart along the first direction. The first beam body has a first communication port communicating with the first cooling channel. The first communication port is located between two adjacent first connecting portions and / or at the ends of the first connecting portions. The end of the second support beam has a second communication port communicating with the second cooling channel. The second support beam is sealed to the first beam body so that the first communication port and the second communication port are connected.

[0012] In some embodiments, a plurality of the first connecting portions are located on the same side of the first beam body, and the bottom surface of the plurality of the first connecting portions is flush with the bottom surface of the first beam body, the top surface of the first connecting portions is lower than the top surface of the first beam body, and the end of the second support beam extends to the side of the first connecting portion near the first beam body.

[0013] In some embodiments, the second support beam includes a bottom support and a protrusion, the bottom support and the protrusion extending along a second direction and defining a portion of the second cooling channel; the top surface of the portion of the bottom support protruding along a first direction from the sidewall of the protrusion forms a support surface, and / or the protrusion protrudes from the bottom support and is adapted to extend into a liquid passage gap; the outlet is disposed on the protrusion and / or the bottom support.

[0014] In some embodiments, the support surface is coplanar with the top surface of the first connecting portion.

[0015] In some embodiments, the cross-sectional shape of the second support beam perpendicular to the second direction is T-shaped or L-shaped.

[0016] In some embodiments, the shape of the outlet includes at least one of a circle and a polygon.

[0017] In some embodiments, the multiple outlets have different sizes.

[0018] In some embodiments, at least one of the outlets is circular in shape, and the diameter of the outlet is a, where 0.5 mm ≤ a ≤ 10 mm.

[0019] In some embodiments, the diameter of the outlet closer to the inlet is less than or equal to the diameter of the outlet farther from the inlet.

[0020] In some embodiments, the pallet further includes a connector that extends along a first direction and connects between at least two adjacent second support beams.

[0021] In some embodiments, the tray is provided with a plurality of battery cells, which are arranged along the second direction, and the distance between two adjacent outlets is the same as the thickness of each battery cell in the second direction; or the distance between two adjacent outlets near the inlet is greater than or equal to the distance between two adjacent outlets far from the inlet.

[0022] The energy storage system with the aforementioned tray according to this application is briefly described below.

[0023] The energy storage system according to this application includes a chiller, a circulation pipeline, and several battery clusters, wherein each battery cluster encapsulates several trays of the cooling system described in any of the above embodiments, and battery modules are supported on the trays; the circulation pipeline has an inlet pipeline and a return pipeline, which are respectively connected to the chiller; the inlet of the tray of the battery cluster is connected to the inlet pipeline; the return pipeline has a return port, which is located on the battery cluster housing or inside the battery cluster housing.

[0024] According to the energy storage system of this application, a chiller is used to cool the cooling medium. The chiller cools the cooling medium to a suitable temperature so that it can effectively absorb and remove the heat generated by the battery modules. A circulation pipeline is responsible for circulating the cooling medium between the chiller and the battery clusters. The circulation pipeline is divided into an inlet pipeline and a return pipeline. The inlet pipeline is responsible for delivering the cooled medium, after being cooled by the chiller, to the tray of the battery clusters, while the return pipeline is responsible for removing the cooled medium that has absorbed heat from the battery clusters and returning it to the chiller for further cooling. The inlet of the tray is connected to the inlet pipeline of the circulation pipeline, allowing the low-temperature cooling medium to smoothly enter the cooling channels within the tray.

[0025] Since the energy storage system according to this application includes the tray described in any of the above embodiments, the energy storage system according to this application achieves effective heat management, improves the stability and service life of the energy storage system, and reduces manufacturing costs.

[0026] In some embodiments, the return port is located at the top of the battery cluster.

[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is an exploded view of a battery pack according to an embodiment of this application;

[0030] Figure 2 This is an exploded view of the tray of a battery pack according to an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the structure of the first support beam of a battery pack according to an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the structure of the second support beam of a battery pack according to an embodiment of this application;

[0033] Figure 5 This is a partial schematic diagram of the second support beam of a battery pack according to an embodiment of this application;

[0034] Figure 6 This is a partial schematic diagram from another perspective of the second support beam of a battery pack according to one embodiment of this application;

[0035] Figure 7 This is a partial schematic diagram of the second support beam of a battery pack according to another embodiment of this application;

[0036] Figure 8 This is a schematic diagram of the structure of an energy storage system according to an embodiment of this application;

[0037] Figure 9 This is a schematic diagram of the internal structure of an energy storage system according to an embodiment of this application;

[0038] Figure 10 This is a cross-sectional view of a tray according to an embodiment of this application;

[0039] Figure 11This is a cross-sectional view of a tray according to another embodiment of this application;

[0040] Figure 12 This is a cross-sectional view of a tray according to yet another embodiment of this application;

[0041] Figure 13 This is a simulation diagram of the operating temperature of a battery pack according to an embodiment of this application;

[0042] Figure 14 This is a simulation diagram of the operating temperature of a battery pack according to another embodiment of this application.

[0043] Figure label:

[0044] 1. Energy storage system;

[0045] 11. Battery pack;

[0046] 111, Battery module; 1111, Liquid flow gap;

[0047] 112. Pallet; 1121. Inlet; 1122. Outlet; 1123. First support beam; 11231. First beam body; 11232. First connecting port; 11233. First connecting part; 1124. Second support beam; 11241. Second connecting port; 11242. Bottom support; 11243. Protrusion; 11244. Support surface; 1125. Connector; 1126. Cooling channel; 11261. First cooling channel; 11262. Second cooling channel; 1127. Add-on;

[0048] 12. Refrigeration unit;

[0049] 13. Circulation pipeline; 131. Liquid inlet pipeline; 1311. Main liquid inlet pipeline; 1312. Branch liquid inlet pipeline; 132. Liquid return pipeline; 1321. Liquid return port.

[0050] 14. Battery clusters. Detailed Implementation

[0051] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0052] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features marked "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] In related technologies, energy storage elements and liquid cooling channels are usually set up independently, which increases system costs and limits the optimization of the overall system performance. It can also lead to insufficient optimization of the cooling medium circulation path, resulting in uneven distribution of the cooling medium. This causes some energy storage elements to not be adequately cooled, affecting the service life of the energy storage elements.

[0055] The following is for reference. Figures 1-14 The tray 112 of the cooling system according to an embodiment of this application is described.

[0056] like Figures 1-12 As shown, the tray 112 of the cooling system according to an embodiment of this application is provided with a cooling channel 1126, which is used to contain the cooling medium. By defining the cooling channel 1126 by the tray 112, the tray 112 can be used to replace part of the pipe to function as a pipeline, or the internal space of the tray 112 can be used as a space to contain the pipeline. This can effectively guide the flow path of the cooling medium, which not only improves the integration of the energy storage system 1, making the overall structure more compact and efficient, but also reduces the manufacturing cost of the system.

[0057] The tray 112 is provided with an inlet 1121 and multiple outlets 1122. The inlet 1121 is the entrance for the cooling medium to enter the cooling channel 1126 inside the tray 112. The inlet 1121 is connected to the chiller 12. The chiller 12 is used to cool the cooling medium to a suitable temperature. The cooled medium then enters the cooling channel 1126 inside the tray 112 from the chiller 12 through the inlet 1121.

[0058] Outlet 1122 is connected to cooling channel 1126, and outlet 1122 is the outlet through which the cooling medium flows out from the cooling channel 1126 within the tray 112. After flowing within the cooling channel 1126, the cooling medium is discharged through outlet 1122 to immerse the battery module 111, allowing the cooling medium to directly contact and flow with the surface of the battery module 111. The cooling medium carries away the heat generated by the battery module 111 through its flow, thereby achieving effective cooling of the battery module 111 and ensuring the safe and stable operation of the energy storage system 1. By optimizing the positions of multiple outlets 1122, the circulation path of the cooling medium can be optimized, making the flow of the cooling medium within the energy storage system 1 more uniform and efficient. This helps to achieve uniform distribution of the cooling medium, ensuring that each energy storage element receives sufficient cooling, and further improving the service life of the battery module 111.

[0059] Therefore, the tray 112 of the cooling system according to the embodiment of this application defines the cooling flow channel 1126, which improves the integration of the energy storage system 1, reduces the manufacturing cost of the energy storage system 1, and helps to optimize the circulation path of the cooling medium by optimizing the position of multiple outlets 1122, so that the flow of the cooling medium is more uniform and efficient.

[0060] It should be noted that the cooling channel 1126 can be formed by the closed structure of the tray 112 itself. The flow path of the cooling medium is defined by the bottom, side or top of the tray 112, which simplifies the complexity of the system, reduces additional pipes and connectors, and thus further improves the integration and compactness of the energy storage system 1.

[0061] Meanwhile, the cooling channel 1126 can also be formed by an attachment 1127 installed within the tray 112. The attachment 1127 itself forms the cooling channel 1126, and the tray 112 has an internal space for installing the attachment 1127. The attachment 1127 is installed within the internal space of the tray 112 to guide the cooling medium to flow along a predetermined path, providing greater flexibility. This allows the shape, size, and layout of the cooling channel 1126 to be adjusted according to specific heat dissipation requirements and space conditions. Furthermore, the inlet 1121 and multiple outlets 1122 on the tray 112 can face different directions to accommodate the flow requirements of the cooling medium. For example, as... Figure 9As shown, the attachment 1127 has a circular cross-sectional shape and is completely accommodated within the internal space of the tray 112; as Figure 10 As shown, the attachment 1127 has a square cross-sectional shape, with one part housed within the interior space of the tray 112 and the other part protruding from the edge of the tray 112; as Figure 11 As shown, the cross-sectional shape of the attachment 1127 is square and is completely contained within the interior space of the tray 112.

[0062] Furthermore, the tray 112 of the cooling system according to the embodiments of this application is used to support energy storage elements, including but not limited to batteries, capacitors, and supercapacitors.

[0063] In some embodiments, such as Figures 2-7 As shown, the pallet 112 includes a first support beam 1123 and at least two second support beams 1124. The first support beam 1123 extends along a first direction, and the second support beams 1124 extend along a second direction. The first direction and the second direction are perpendicular to each other, and the plane in which they lie is a horizontal plane.

[0064] Each of the second support beams 1124 is arranged opposite to the first support beam 1124 in the first direction, such that the space between two adjacent second support beams 1124 is sufficient to accommodate the battery module 111 in the first direction. The second support beams 1124 are connected to the first support beam 1123, so that the first support beam 1123 and the second support beam 1124 together form an overall structural frame with a tray 112, which not only provides stable support for the battery module 111, but also defines the spatial layout of the cooling channels 1126.

[0065] The first support beam 1123 and the second support beam 1124 together define the cooling channel 1126. Specifically, the first support beam 1123 has a first cooling channel 11261 extending along a first direction; the second support beam 1124 has a second cooling channel 11262 extending along a second direction. The first cooling channel 11261 and the second cooling channel 11262 are connected, so the cooling medium can flow freely between the first cooling channel 11261 and the second cooling channel 11262, which helps the cooling medium to flow evenly through various areas within the tray 112, achieving free flow and uniform distribution of the cooling medium, thereby achieving uniform cooling of the battery module 111.

[0066] It should be noted that the positions of the inlet 1121 and outlet 1122 can be implemented in various ways to adapt to the cooling requirements and structural layout of the energy storage element 1 in different energy storage systems 1. The outlet 1122 can be a round hole, rectangular hole, triangular hole, polygonal hole, elliptical hole, etc., or it can be a long linear hole, corrugated linear hole, etc. Different opening types can be freely combined to meet different cooling requirements. The cooling medium is usually an insulating working fluid, which can be air, deionized water, hydrocarbons, fluorinated liquids, refrigerants, etc.

[0067] In some embodiments, such as Figures 2-7 As shown, the first support beam 1123 is provided with an inlet 1121, and the second support beam 1124 is provided with multiple outlets 1122. The first support beam 1123 is connected to at least two second support beams 1124, and each second support beam 1124 is connected to the first support beam 1123.

[0068] By setting an inlet 1121 on the first support beam 1123, the cooling medium is effectively introduced into the cooling channel of the tray 112 and first flows through the first cooling channel 11261. As the cooling medium flows, it is divided into multiple branches and enters each of the second cooling channels 11262, so that the cooling medium flows evenly and efficiently in the cooling channel.

[0069] The second support beams 1124 are arranged opposite each other along the first direction. Especially for three or more second support beams 1124, the second support beams 1124 are more evenly distributed within the area of ​​the tray 112 compared to the first support beams 1123. By providing multiple outlets 1122 on the second support beams 1124, the cooling medium can flow out of the tray 112 in an orderly and uniform manner through the multiple outlets 1122, optimizing the heat exchange efficiency between the cooling medium and the battery module 111. The outlets 1122 on the second support beams 1124 are dispersed as the second support beams 1124 are distributed, allowing the cooling medium to contact the surface of the battery module 111 more evenly, effectively improving the uniformity of cooling.

[0070] Alternatively, an outlet 1122 can be provided on the first support beam 1123, and an inlet 1121 can be provided on the second support beam 1124.

[0071] There can be two first support beams 1123, which are spaced apart in the second direction and respectively connected to the two ends of the second support beam 1124, forming a frame structure suitable for supporting and surrounding the battery module 111. This not only enhances the structural strength of the tray 112 but also provides a more stable and efficient path for the flow of the cooling medium. At least one first support beam 1123 is provided with an inlet 1121, serving as the entry point for the cooling medium into the cooling system of the tray 112. In a preferred embodiment, both first support beams 1123 are provided with inlets 1121, which allows for the diversion of the cooling medium and further improves cooling efficiency. Through the first cooling channels 11261 inside the two first support beams 1123, the pressure between the various second support beams 1124 can be further balanced, making the outlet pressure of the cooling medium more similar when flowing through the various second support beams 1124. This improves the stability and efficiency of the entire cooling system, not only enhancing the uniformity of cooling but also helping to extend the service life of the battery module 111 and improve the performance of the entire battery system.

[0072] In some embodiments, such as Figure 1 As shown, the battery module 111 comprises multiple battery cells arranged at intervals. The battery module 111 is a modular unit assembled from multiple battery cells connected in series or parallel. A row of battery cells arranged along a second direction forms a battery module 111. Each battery module 111 is supported on two adjacent second support beams 1124, thereby enabling the tray 112 to support the battery module 111. The tray 112 can further support the multiple battery modules 111 arranged at intervals in the first direction using three or more second support beams 1124 spaced apart in the first direction. Multiple battery modules 111 are connected together in series or parallel to form a larger capacity battery pack 11.

[0073] By arranging the battery modules 111 at intervals, there is enough space around each battery module 111 for the cooling medium to flow, thereby more effectively removing the heat generated by the battery modules 111 and reducing the accumulation of heat between the battery modules 111, thus improving the heat dissipation efficiency of the energy storage system 1.

[0074] In some embodiments, at least two battery modules 111 are connected to each other and supported on two adjacent second support beams 1124, thereby enabling the tray 112 to support the battery modules 111. The at least two battery modules 111 between two adjacent second support beams 1124 may be arranged at intervals, allowing the cooling medium to flow in the gaps therebetween, thereby improving heat dissipation efficiency.

[0075] In some embodiments, preferably, to improve installation stability, such as Figure 1As shown, an installation space is provided between two adjacent second support beams 1124, and one installation space is used to install one battery module 111. The arrangement and spacing of at least two second support beams 1124 provide installation positions for the battery module 111. The battery module 111 can be placed within the installation space between two adjacent second support beams 1124, ensuring stable support for the battery module 111 and allowing the cooling medium to flow smoothly through the battery module 111, achieving effective thermal management.

[0076] A liquid-passing gap 1111 is formed between two adjacent battery modules 111, and the liquid-passing gap 1111 is connected to the outlet 1122. The liquid-passing gap 1111 provides a flow channel for the cooling medium. After flowing out of the outlet 1122, the cooling medium flows into the liquid-passing gap 1111 to immerse the battery module 111, which can increase the contact area and allow the cooling medium to make more full contact with the surface of the battery module 111 and flow, thereby achieving more efficient heat exchange.

[0077] In some embodiments, in order to improve power density, two battery modules 111 can be installed in one installation space, with the two battery modules 111 supporting each other. At this time, a liquid-passing gap 1111 is formed between two adjacent battery modules 111 located on both sides of the second support beam 1124.

[0078] It should be noted that the number of outlets 1122 on each second support beam 1124 can be related to the number of battery cells in a row in a battery module 111. That is, the number of outlets 1122 on each second support beam 1124 can be equal to the number of battery cells in a row in a battery module 111. The number of outlets 1122 on each second support beam 1124 can also be a multiple of the number of battery cells in a row in a battery module 111. This is equivalent to one battery cell being associated with one or more outlets 1122, so that the cooling medium can flow evenly and efficiently through each battery cell, thereby minimizing the temperature gradient inside the battery module.

[0079] In some embodiments, such as Figure 3 As shown, the first support beam 1123 includes a first beam body 11231 and multiple first connecting portions 11233. The first beam body 11231 extends along a first direction and is provided with a first cooling channel 11261. The first beam body 11231 not only provides support for the battery module 111, but also provides the first cooling channel 11261 to guide the flow path of the cooling medium, thereby improving the integration of the energy storage system 1 and reducing the manufacturing cost of the energy storage system 1.

[0080] Multiple first connecting parts 11233 are provided on one side of the first support beam 1123 for connection with the second support beam 1124. By providing multiple first connecting parts 11233 on one side of the first support beam 1123, and correspondingly connecting the second support beam 1124 to the first connecting parts 11233, at least two second support beams 1124 can be connected to one side of the first support beam 1123, simplifying assembly. After the second support beam 1124 is connected to the first connecting parts 11233, the second cooling channel 11262 communicates with the first cooling channel 11261, allowing the cooling medium to flow freely between the first cooling channel 11261 and the second cooling channel 11262, thereby guiding the flow path of the cooling medium.

[0081] The first beam body 11231 has a first connecting port 11232 communicating with the first cooling channel 11261, and the end of the second support beam 1124 has a second connecting port 11241 communicating with the second cooling channel 11262. The second support beam 1124 is sealed to the first beam body 11231 to connect the first connecting port 11232 and the second connecting port 11241, thereby realizing the connection between the first cooling channel 11261 and the second cooling channel 11262 without the need for additional connecting pipes, reducing the need for additional components, simplifying the structure of the energy storage system 1, and also reducing the assembly steps of the energy storage system 1, which helps to reduce the manufacturing cost of the energy storage system 1. After the first connecting port 11232 and the second connecting port 11241 are connected, the cooling medium can flow freely between the first cooling channel 11261 and the second cooling channel 11262, thereby guiding the flow path of the cooling medium.

[0082] Specifically, the first connecting part 11233 can have various shapes, and the connection between the first connecting part 11233 and the second support beam 1124 can adopt various connection methods. For example, the first connecting part 11233 has a flat surface and can directly fit with the end face of the second support beam 1124, achieving a firm connection through bolts, welding, or riveting; the first connecting part 11233 can also form a slot, into which the end of the second support beam 1124 can be inserted and fixed by bolts, clips, or other locking mechanisms, facilitating quick assembly and disassembly.

[0083] In some embodiments, such as Figure 3As shown, in the first direction, at least a portion of the first connecting port 11232 is located between two adjacent first connecting portions 11233, and the end of the second support beam 1124 extends into the space between the two first connecting portions 11233. The direct connection between the first connecting port 11232 and the end of the second support beam 1124 allows the cooling medium to flow freely between the first cooling channel 11261 and the second cooling channel 11262. Because the ends of the first connecting port 11232 and the second support beam 1124 match each other, the second support beam 1124 can be directly inserted into place during assembly without additional adjustment or alignment steps, simplifying the assembly process, improving assembly efficiency, and reducing the risk of assembly errors.

[0084] It should be emphasized that the first cooling channel 11261 can be located only within the first beam body 11231. In this case, the outer wall of the second support beam 1124 can only be connected to the first connecting part 11233, without any flow of cooling medium. Of course, the outer wall of the second support beam 1124 can also not be connected to the first connecting part 11233; in this case, the second support beam 1124 is only connected to the first beam body 11231, thereby realizing the connection between the first cooling channel 11261 and the second cooling channel 11262. Alternatively, the first cooling channel 11261 can be defined by the first beam body 11231 and the first connecting part 11233 together. In this case, the end of the second support beam 1124 can be connected only to the first beam body 11231, the end of the second support beam 1124 can be connected only to the first connecting part 11233, or the end of the second support beam 1124 can be connected to both the first beam body 11231 and the first connecting part 11233, thereby realizing the connection between the first cooling channel 11261 and the second cooling channel 11262. All of the above methods are within the protection scope of this utility model.

[0085] In some embodiments, such as Figure 3 As shown, in the first direction, a first connecting port 11232 is provided at each end of the first beam body 11231. Therefore, the ends of two second support beams 1124 are respectively connected to the ends of the first beam body 11231 to support the battery module 111, increasing the number of battery modules 111 that the tray 112 can support. While the ends of the second support beams 1124 are connected to the ends of the first beam body 11231, the second connecting ports 11241 are connected to the first connecting ports 11232 at both ends of the first beam body 11231, forming a continuous cooling channel 1126, which makes the flow of the cooling medium more uniform.

[0086] In some embodiments, such as Figure 2 and Figure 3As shown, multiple first connecting parts 11233 are located on the same side of the first beam body 11231, so that multiple second support beams 1124 can be arranged and connected on the same side where multiple first connecting parts 11233 are located, so that multiple second support beams 1124 and first support beams 1123 are assembled to form a stable frame for supporting the battery module 111 and guiding the flow of cooling medium.

[0087] The bottom surfaces of the multiple first connecting portions 11233 are flush with the bottom surface of the first beam body 11231, ensuring that the bottom surfaces of the first connecting portions 11233 and the first beam body 11231 are on the same horizontal plane, which helps to ensure smooth contact between the battery module 111 and the first support beam 1123. The top surface of the first connecting portion 11233 is lower than the top surface of the first beam body 11231, allowing the battery module 111 to be supported on the top surface of the first connecting portion 11233 and rest against the side of the first beam body 11231. The first connecting portions 11233 and the first beam body 11231 respectively provide support and limit the battery module 111, enhancing the support and limit capabilities of the tray 112 for the battery module 111 and improving the stability of the battery module 111.

[0088] The end of the second support beam 1124 extends to the side of the first connecting portion 11233 near the first beam body 11231, so that the second support beam 1124 and the first beam body 11231 cooperate to connect the first cooling channel 11261 and the second cooling channel 11262. For example, the first beam body 11231 has a notch open towards the first connecting portion 11233, which communicates with the first cooling channel 11261. The end of the second support beam 1124 has a protrusion that matches the notch on the first beam body 11231. When the second support beam 1124 is installed in place, the protrusion can fit perfectly into the notch, thereby achieving the connection between the first cooling channel 11261 and the second cooling channel 11262, which is easy to assemble.

[0089] In some embodiments, such as Figures 4-7 As shown, the second support beam 1124 includes a bottom support 11242 and a protrusion 11243. The bottom support 11242 and the protrusion 11243 extend along the second direction and define a portion of the second cooling channel 11262. Therefore, the second cooling channel 11262 is defined by the bottom support 11242 and the protrusion 11243, which allows the second cooling channel 11262 to accommodate more cooling medium and improve the efficiency of cooling medium flow.

[0090] The top surface of the portion of the bottom support 11242 that protrudes from the sidewall of the protrusion 11243 along a first direction forms a support surface 11244. The support surface 11244 is used to support the battery module 111, thereby enabling the tray 112 to support the battery module 111. The bottom of the battery module 111 can directly contact the support surface 11244. The protrusion 11243 protrudes from the bottom support 11242 and is adapted to extend into the liquid passage gap 1111. Two adjacent protrusions 11243 can cooperate with the first beam body 11231 of the first support beam 1123 to form a space that can surround the battery module 111, enhancing the lateral constraint of the tray 112 on the battery module 111 and preventing lateral displacement of the battery module 111 during transportation or use. Through the synergistic effect of the protrusion 11243 and the bottom support 11242, the sides and bottom of the battery module 111 can be protected to a certain extent, thereby protecting the structural integrity and performance stability of the battery module 111.

[0091] Specifically, the ends of the bottom support 11242 and the protrusion 11243 are engaged between the two first connecting portions 11233 of the first support beam 1124 to ensure the stability of the tray 112 during installation and operation. Furthermore, the support surface 11244 of the second support beam 1124 is coplanar with the top surface 11255 of the first connecting portion 11233; that is, the support surface 11244 and the top surface 11255 together form a plane parallel to the horizontal plane, which is used to contact the bottom surface of the battery module 111. With this configuration, the first connecting portion 11233 and the bottom support 11242 jointly support the battery module 111 from the bottom, and the first beam body 11231 and the protrusion 11243 clamp the battery module 111 from its side wall, improving the installation stability of the battery module 111.

[0092] The outlet 1122 is provided on the protrusion 11243 and / or the bottom support 11242.

[0093] Specifically, the outlet 1122 can be located only on the protrusion 11243, allowing the cooling medium flowing out of the outlet 1122 to directly contact the side of the battery module 111, thus enhancing the efficiency of heat exchange. When the cooling medium flows out of the outlet 1122, its temperature is sufficient to absorb the heat from the battery module 111 and directly act on the side of the battery module 111. The large contact area and short heat conduction path improve the efficiency of heat transfer.

[0094] The outlet 1122 can also be located only on the bottom support 11242. In this case, after the cooling medium flows through the cooling channel 1126 of the tray 112, it is smoothly discharged through the outlet 1122 on the bottom support 11242, allowing the cooling medium to form a more uniform flow at the bottom of the battery module 111.

[0095] The outlet 1122 can also be set on both the protrusion 11243 and the bottom support 11242, which helps to achieve a more balanced cooling effect in multiple key heat dissipation areas of the battery module 111, reduce the risk of local overheating, and further improve the thermal management performance of the entire battery system.

[0096] It is worth noting that the specific location of the outlet 1122 is not strictly limited and has a high degree of flexibility. The outlet 1122 can be located not only on the bottom surface of the protrusion 11243, but also on the side of the protrusion 11243 facing the battery module 111. Similarly, the location of the outlet 1122 on the bottom support 11242 is also diverse; it can be located on the bottom surface of the bottom support 11242, on the side of the bottom support 11242, or even cleverly placed on the top surface of the bottom support 11242.

[0097] In some embodiments, such as Figure 2 As shown, the cross-sectional shape of the second support beam 1124 perpendicular to the second direction is T-shaped or L-shaped.

[0098] Specifically, for the second support beam 1124 connected to the middle of the first support beam 1123, its two sides in the first direction (corresponding to) Figure 6 , Figure 7 The left and right sides of the second support beam 1124 need to support different battery modules 111 respectively, so it can be constructed with a T-shaped cross-section perpendicular to the second direction. The T-shape gives the second support beam 1124 two horizontal sections located on both sides of the vertical section, thus providing support and constraint for the battery modules 111 on both sides simultaneously. The vertical section of the second support beam 1124 extends between the two battery modules 111, providing lateral constraint.

[0099] Furthermore, for the second support beam 1124 connected to the end of the first support beam 1123, only one side needs to support the battery module 111. Therefore, it can be constructed with an L-shaped cross-section perpendicular to the second direction. This reduces the overall volume of the battery cluster 14 and increases the power density, not only meeting the support requirements but also optimizing material utilization and reducing the overall weight of the tray 112. The horizontal portion of the L-shaped second support beam 1124 supports the battery module 111 to bear its weight, while the vertical portion extends into the side of the battery module 111 to provide lateral restraint.

[0100] It should be noted that the second support beam 1124 can all be constructed in a T-shape, thereby reducing the variety of second support beams 1124 in the energy storage system, simplifying the production and assembly process, and reducing costs. During production, there is no need to prepare different molds and production lines for second support beams 1124 of different shapes, thus improving production efficiency. At the same time, it reduces inventory pressure and logistical complexity.

[0101] In some embodiments, such as Figure 6 and Figure 7 As shown, the shape of outlet 1122 includes at least one of circular and polygonal shapes. Outlet 1122 is not limited to a specific shape, but can be selected or combined from various shapes according to actual needs and system layout, thereby optimizing fluid distribution, enhancing structural strength, or meeting specific space constraints. By adopting outlets 1122 of different shapes, the cooling system can more flexibly adapt to different heat dissipation requirements and space conditions. With the battery module 111 and tray 112 unchanged, the performance of the cooling system can be precisely adjusted and optimized by changing the shape, number, and distribution of outlets 1122 and conducting simulation tests. Simulation tests can simulate the effects of outlets 1122 of different shapes, numbers, and distributions on the flow path, velocity, and temperature distribution of the cooling medium. Through comparative analysis, the design parameters that most effectively improve heat dissipation efficiency can be identified, while ensuring the stability and durability of the system.

[0102] In some embodiments, the multiple outlets 1122 have different sizes, allowing the system to make more precise adjustments based on the actual heat dissipation requirements of the battery module 111. By adjusting the sizes of the different outlets 1122, the flow distribution and velocity of the cooling medium can be controlled, thereby optimizing performance and improving heat dissipation efficiency. The different sizes of the outlets 1122 can also meet the different heat dissipation requirements of different areas. In the battery module 111, the heat generation and accumulation may vary in different parts; therefore, by appropriately setting outlets 1122 of different sizes, precise matching of the heat dissipation requirements of each area can be achieved.

[0103] In some embodiments, such as Figure 7 As shown, at least one outlet 1122 is circular in shape, which facilitates smooth fluid flow and is also easy to manufacture. The diameter of outlet 1122 is 'a', 0.5mm ≤ a ≤ 10mm. By limiting the diameter 'a' of outlet 1122 to greater than or equal to 0.5mm, the cooling medium has sufficient flow rate and pressure when flowing out to achieve cooling of battery module 111. By limiting the diameter 'a' of outlet 1122 to less than or equal to 10mm, the flow rate and pressure of the cooling medium are limited, allowing the cooling medium to flow out of outlet 1122 at a stable and uniform rate, ensuring effective heat dissipation. Therefore, by limiting the diameter 'a' of outlet 1122 to the range of 0.5mm to 10mm, the cooling medium can be maintained in a stable flow state, thereby ensuring stable cooling efficiency of the cooling system.

[0104] In some embodiments, the diameter of the outlet 1122 near the inlet 1121 is less than or equal to the diameter of the outlet 1122 furthest from the inlet 1121. During the flow of the cooling medium, its pressure gradually decreases as the fluid moves away from the inlet 1121. By increasing the diameter of the outlet 1122, the pressure drop can be compensated for to some extent, maintaining a uniform and stable flow in the cooling medium. Therefore, by increasing the diameter of the outlet 1122 furthest from the inlet 1121, the cooling medium can be distributed more evenly.

[0105] In some embodiments, a plurality of battery cells are provided on the tray 112, and the plurality of battery cells are arranged along the second direction. The distance between two adjacent outlets 1122 is the same as the thickness dimension of each battery cell in the second direction, thereby facilitating each battery cell to correspond to one outlet 1122, improving the heat dissipation effect, improving the uniformity of heat dissipation to the plurality of battery cells, and reducing the temperature difference between the plurality of battery cells.

[0106] In some embodiments, the distance between two adjacent outlets 1122 near the inlet 1121 is greater than or equal to the distance between two adjacent outlets 1122 far from the inlet 1121. Therefore, in the direction of cooling medium flow, starting from the inlet 1121, the distance between adjacent outlets 1122 decreases as the cooling medium gradually moves away from the inlet 1121. As the cooling medium moves away from the inlet 1121, its pressure and flow rate gradually decrease. By adjusting the distance between the outlets 1122, making the distance between outlets 1122 near the inlet 1121 larger and the distance between outlets 1122 far from the inlet 1121 smaller, the pressure and flow rate losses of the cooling medium during flow can be compensated to some extent, resulting in a more uniform distribution of the cooling medium and thus improving cooling uniformity.

[0107] Specifically, such as Figure 7 As shown, the diameter of outlet 1122a closer to inlet 1121 is less than or equal to the diameter of outlet 1122b farther from inlet 1121, to compensate for the natural pressure reduction of the cooling medium during flow due to the increased distance from the inlet. Simultaneously, the distance d1 between two adjacent outlets 1122 closer to inlet 1121 is greater than or equal to the distance d2 between two adjacent outlets 1122 farther from inlet 1121, to compensate for pressure and flow losses of the cooling medium during flow, allowing the cooling medium to be more evenly distributed to each outlet 1122, thereby achieving efficient and balanced cooling.

[0108] Special note, Figure 13 and Figure 14 These are simulation diagrams of the operating temperature of the battery pack 11 in two different embodiments of this application. Figure 13In the simulation diagram of the operating temperature of the battery pack 11 shown, the outlet 1122 is circular in shape and has a diameter of 2mm. The maximum temperature difference between the two battery cells is 4.3°. Figure 14 In the simulated operating temperature diagram of the battery pack 11 shown, the outlets 1122 are all circular, but the diameter of nine outlets 1122 is 2mm, and the diameter of seven outlets 1122 is 3mm. The maximum temperature difference between two battery cells is 3°C. In contrast, in Figure 14 In this embodiment, by optimizing outlet 1122, specifically by increasing the diameter of a portion of outlet 1122 to 3mm, not only is the flow rate of the cooling medium increased, but the uniformity of the cooling medium distribution around tray 112 and battery module 111 is also improved. This results in a significant reduction in the maximum temperature difference between battery cells, from 4.3°C to 3°C, demonstrating a significant improvement in the thermal management performance of battery pack 11. A smaller temperature difference means that battery cells operate closer to their optimal temperature range, which is beneficial for extending battery life, improving energy storage efficiency, and enhancing system stability.

[0109] In some embodiments, such as Figure 2 As shown, the tray 112 also includes a connector 1125, which extends along a first direction and connects between at least two adjacent second support beams 1124. By providing the connector 1125, the stability and overall rigidity of the tray 112 are improved, which helps to reduce deformation and vibration when supporting the battery module 111. This allows the tray 112 to more effectively distribute and bear the weight and pressure from the battery module 111, thereby improving the safety and reliability of the entire energy storage system 1.

[0110] The following is for reference. Figure 8 and Figure 9 Briefly describe the energy storage system 1 having the above-described battery pack 11 according to this application.

[0111] like Figure 8 and Figure 9 As shown, the energy storage system 1 according to this application includes a chiller 12, a circulation pipeline 13, and a battery pack 11 of the energy storage system 1 in any of the above embodiments. The circulation pipeline 13 has an inlet pipeline 131 and a return pipeline 132. The inlet 1121 of the tray 112 is connected to the chiller 12 through the inlet pipeline 131.

[0112] According to the energy storage system 1 of this application, the cooler 12 is used to cool the cooling medium. The cooler 12 cools the cooling medium to a suitable temperature so that it can effectively absorb and remove the heat generated by the battery module 111. A circulation pipeline 13 is responsible for circulating the cooling medium between the cooler 12 and the battery pack 11. The circulation pipeline 13 is divided into an inlet pipeline 131 and a return pipeline 132. The inlet pipeline 131 is responsible for transporting the cooled medium from the cooler 12 to the tray 112 of the battery pack 11, while the return pipeline 132 is responsible for removing the cooled medium that has absorbed heat from the battery pack 11 and returning it to the cooler 12 for further cooling. The inlet 1121 of the tray 112 is connected to the inlet pipeline 131 of the circulation pipeline 13, allowing the low-temperature cooling medium to smoothly enter the cooling channels 1126 within the tray 112.

[0113] Since the energy storage system 1 according to this application includes the tray 112 in any of the above embodiments, the energy storage system 1 according to this application achieves effective heat management, improves the stability and service life of the energy storage system 1, and reduces manufacturing costs.

[0114] In some embodiments, such as Figure 9 As shown, the energy storage system 1 includes a chiller 12, a circulation pipeline 13, and several battery clusters 14. Each battery cluster 14 encapsulates several trays 112 as described in any of the above embodiments, and battery modules 111 are supported on the trays 112. The chiller 12 is used to cool the cooling medium. The chiller 12 cools the cooling medium to a suitable temperature so that the cooling medium can effectively absorb and remove the heat generated by the battery modules 111. The battery cluster 14 consists of multiple battery modules 111. The battery module 111 is composed of multiple battery cells connected in series or parallel to provide the required voltage and current. In the energy storage system 1, the battery clusters 14 are responsible for storing electrical energy and releasing electrical energy when needed. The battery modules 111 are placed on the trays 112 of the cooling system for effective thermal management. The circulation pipeline 13 is responsible for circulating the cooling medium between the chiller 12 and the battery clusters 14.

[0115] The circulation pipeline 13 has an inlet pipeline 131 and a return pipeline 132. The inlet pipeline 131 is responsible for transporting the cooling medium cooled by the chiller 12 to the tray 112 of the battery cluster 14, while the return pipeline 132 is responsible for exporting the cooling medium that has absorbed heat from the battery cluster 14 and sending it back to the chiller 12 for further cooling. The inlet pipeline 131 and the return pipeline 132 are respectively connected to the chiller 12. Therefore, the cooling medium can be transported to the chiller 12 for cooling through the return pipeline 132, and then flow out of the chiller 12 through the inlet pipeline 131 and transported to the battery cluster 14 to cool the battery module 111. Through the cooling medium circulation path, the energy storage system 1 achieves efficient heat absorption from the battery module 111 and sends it to the chiller 12 for cooling through the return pipeline 132, realizing the continuous and efficient operation of the energy storage system 1 and the safe and stable operation of the battery module 111.

[0116] The inlet 1121 of the tray 112 of the battery cluster 14 is connected to the liquid inlet pipe 131. Therefore, the cooling medium flows from the liquid inlet pipe 131 into the cooling channels 1126 within the tray 112, where it exchanges heat with the battery modules 111 on the tray. The return pipe 132 has a return port 1321, which is located on or inside the housing of the battery cluster 14. When the cooling medium gathers at the return port 1321, it has already effectively absorbed heat from the battery modules 111 and is at a relatively high temperature. Therefore, it flows into the return pipe 132 through the return port 1321 until it is guided to the cooler 12. If the return port 1321 is located on the housing of the battery cluster 14, it ensures sealing and facilitates maintenance and repair. If the return port 1321 is located inside the housing of the battery cluster 14, it can more effectively utilize the internal space of the battery cluster 14, ensuring that the cooling medium flows along a predetermined path and improving the efficiency of thermal management.

[0117] In some embodiments, such as Figure 9 As shown, the return port 1321 is located at the top of the battery cluster 14. The cooling medium flowing from the outlet 1122 on the tray 112 flows upwards. As the cooling medium flows out of the outlet 1122 and rises, it contacts the surface of the battery module 111 and carries away the heat generated by the battery module 111, gradually increasing its temperature until it finally converges at the return port 1321. By placing the return port 1321 at the top of the battery cluster 14, the circulation efficiency of the cooling medium is optimized. During its ascent, the cooling medium can be more evenly distributed around the battery module 111, ensuring that each battery cell is effectively cooled and reducing the risk of localized overheating.

[0118] In some embodiments, such as Figure 9As shown, the liquid inlet line 131 includes a main liquid inlet line 1311 and multiple branch liquid inlet lines 1312, allowing the cooling medium to be diverted from a single main liquid inlet line 1311 to multiple branch liquid inlet lines 1312 to provide cooling medium for each tray 112. The main liquid inlet line 1311 extends along the arrangement direction of the multiple trays 112, enabling the cooling medium to be transported along the arrangement direction of the multiple trays 112 so as to cover all trays 112 and thus achieve efficient cooling of the battery modules 111 on each tray 112. One end of each branch liquid inlet line 1312 is connected to the main liquid inlet line 1311, and the other end of each branch liquid inlet line 1312 is connected to the inlet 1121 of the tray 112. The connection between the branch liquid inlet lines 1312 and the main liquid inlet line 1311 allows the cooling medium to flow from the main liquid inlet line 1311 into each branch liquid inlet line 1312. The number of inlet branch pipes 1312 matches the number of trays 112, ensuring that the cooling channels 1126 of each tray 112 receive a sufficient supply of cooling medium. The other end of each of the multiple inlet branch pipes 1312 is connected to the inlet 1121 of the tray 112. By connecting the inlet branch pipes 1312 to the inlet 1121 of the tray 112, the cooling medium flows into the cooling channels 1126 within the tray 112 after being transported through the inlet branch pipes 1312, achieving heat exchange between the cooling medium and the battery modules 111. The energy storage system 1, through the main inlet branch pipe 1311 and multiple inlet branch pipes 1312 matching the number of trays 112, achieves the distribution of cooling medium from a single source and uniform coverage of all battery modules 111 on all trays 112, resulting in uniform and efficient cooling.

[0119] In some embodiments, the energy storage system 1 further includes a cabinet, with multiple battery packs 11 installed inside the cabinet. For example, the inner wall of the cabinet is integrated with a support beam, and the battery packs 11 can be supported on the support beam by a tray 112. The chiller 12 is located outside the cabinet, and a portion of the liquid inlet pipe 131 and the liquid return pipe 132 extends into the cabinet.

[0120] It should be noted that the main liquid inlet line 1311 can be installed inside or outside the cabinet. If the main liquid inlet line 1311 is installed inside the cabinet, then multiple branch liquid inlet lines 1312 are also installed inside the cabinet. If the main liquid inlet line 1311 is installed outside the cabinet, then the branch liquid inlet lines 1312 can enter the cabinet and connect to the tray 112 by penetrating the cabinet wall. In this case, the main liquid inlet line 1311 is equivalent to the liquid inlet line 131.

[0121] Other configurations and operations of the tray 112 of the energy storage system 1 according to the embodiments of this application are known to those skilled in the art and will not be described in detail here. In the description of this application, "first feature" and "second feature" may include one or more of the features. The up-down direction, left-right direction, and front-back direction are defined according to the up-down direction, left-right direction, and front-back direction shown in the figures.

[0122] In the description of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0123] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0124] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A tray (112) of a cooling system, characterized in that, the tray (112) is provided with a cooling flow channel (1126), wherein the tray (112) is provided with an inlet (1121) and a plurality of outlets (1122), the inlet (1121) and the outlets (1122) are respectively communicated with the cooling flow channel (1126), the tray (112) comprises a first support beam (1123) extending along a first direction and at least two second support beams (1124) extending along a second direction, the second support beams (1124) are arranged opposite to each other along the first direction and connected to the first support beam (1123), and a first cooling flow channel (11261) corresponding to the first support beam (1123) is communicated with a second cooling flow channel (11262) corresponding to the second support beam (1124). 2.The tray (112) of the cooling system according to claim 1, characterized in that, the first support beam (1123) is provided with the inlet (1121), and the second support beam (1124) is provided with the outlets (1122). 3.The tray (112) of the cooling system according to claim 2, characterized in that, an installation space is arranged between two adjacent second support beams (1124) for installing a battery module, and a liquid passing gap (1111) is formed between two adjacent battery modules (111) and communicated with the outlet (1122). 4.The tray (112) of the cooling system according to claim 1, characterized in that, the first support beam (1123) comprises a first beam body (11231) extending along the first direction and provided with the first cooling flow channel (11261), and a plurality of first connecting portions (11233) arranged on one side of the first support beam (1123) and spaced apart along the first direction, the first beam body (11231) is provided with a first communication port (11232) communicated with the first cooling flow channel (11261), the first communication port is located between two adjacent first connecting portions (11233) and / or at an end of the first connecting portion (11233), an end of the second support beam (1124) is provided with a second communication port (11241) communicated with the second cooling flow channel (11262), and the second support beam (1124) is sealingly connected to the first beam body (11231) to make the first communication port (11232) and the second communication port (11241) communicated. 5.The tray (112) of the cooling system according to claim 4, characterized in that, The first connecting portions (11233) are located on the same side of the first beam body (11231), the top surface of the first connecting portions (11233) is lower than the top surface of the first beam body (11231), and the end of the second support beam (1124) extends to the side of the first connecting portions (11233) close to the first beam body (11231).

6. The tray (112) of the cooling system according to claim 1, characterized in that, The second support beam (1124) comprises a bottom support (11242) and a protruding portion (11243), the bottom support (11242) and the protruding portion (11243) extend along the second direction respectively and define a part of the second cooling flow channel (11262); The bottom support (11242) protrudes the top surface of the part of the protruding portion (11243) side wall along the first direction to form a support surface (11244), and / or the protruding portion (11243) protrudes the bottom support (11242) and is adapted to extend into the liquid gap (1111); The outlet (1122) is arranged on the protruding portion (11243) and / or the bottom support (11242).

7. A tray (112) of a cooling system according to claim 6, characterized in that The second support beam (1124) has a T-shaped or L-shaped cross-sectional shape perpendicular to the second direction.

8. A tray (112) of a cooling system according to claim 6, characterized in that The support surface (11244) is coplanar with the top surface (11255) of the first connecting portion (11233).

9. The tray (112) of a cooling system according to claim 1, characterized in that The shape of the outlet (1122) comprises at least one of a circle and a polygon; And / or, the sizes of the plurality of outlets (1122) are different; And / or, the diameter of the outlet (1122) is a, 0.5mm≤a≤10mm.

10. A tray (112) of a cooling system according to claim 8, characterized in that The diameter of the outlet (1122) close to the inlet (1121) is less than or equal to the diameter of the outlet (1122) away from the inlet (1121).

11. The tray (112) of the cooling system according to claim 1, characterized in that, The tray (112) further comprises a connecting member (1125) extending along the first direction and connected between at least two adjacent second support beams (1124).

12. The tray (112) of the cooling system according to claim 2, characterized in that, The tray (112) is provided with a plurality of battery monomers, the plurality of battery monomers are arranged along the second direction, the distance between two adjacent outlets (1122) is the same as the thickness dimension of each battery monomer in the second direction; Or the distance between two adjacent outlets (1122) close to the inlet (1121) is greater than or equal to the distance between two adjacent outlets (1122) away from the inlet (1121).

13. An energy storage system (1) characterized by, Comprise: A cooling machine (12), a circulating pipeline (13) and a plurality of battery clusters (14), wherein each battery cluster (14) encapsulates a plurality of trays (112) according to any one of claims 1-12, and the battery modules (111) are supported on the trays (112). The circulation pipeline (13) has a liquid inlet pipeline (131) and a liquid return pipeline (132), and the liquid inlet pipeline (131) and the liquid return pipeline (132) are communicated with the cold machine (12) respectively; The inlet (1121) of the tray (112) of the battery cluster (14) is communicated with the liquid inlet pipeline (131); The liquid return pipeline (132) has a liquid return port (1321), and the liquid return port (1321) is arranged on or in the shell of the battery cluster (14).

14. An energy storage system (1) according to claim 13, characterized in that The liquid return port (1321) is located at the upper part of the battery cluster (14).

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