Battery cluster and energy storage container

Abstract

This utility model relates to the field of energy storage battery technology, and more particularly to a battery cluster and energy storage container. The battery cluster includes a support frame and multiple battery packs installed in various layers within the support frame. Each battery pack has an inlet port and an outlet port. Two inlet branch pipes are connected in parallel to an inlet main pipe, and multiple inlet branch pipes are alternately arranged on the two inlet branch pipes. Each inlet branch pipe is connected to the inlet port of the corresponding battery pack in the layer. The inlet ports of adjacent battery packs are connected to different inlet branch pipes. Two outlet branch pipes are connected in parallel to an outlet main pipe, and multiple outlet branch pipes are alternately arranged on the two outlet branch pipes. Each outlet branch pipe is connected to the outlet port of the corresponding battery pack in the layer. The outlet ports of adjacent battery packs are connected to different outlet branch pipes. This utility model can achieve better flow uniformity, improve temperature uniformity, reduce flow resistance, and improve the life of energy storage batteries. It uses only one set of inlet and outlet main pipes, reducing pipeline costs and space occupation.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery technology, and in particular to a battery cluster and an energy storage container. Background Technology

[0002] In energy storage products, a battery cluster consists of multiple battery packs (or battery modules) connected in series or parallel, and integrated with components such as energy storage converters, liquid cooling systems, and battery cluster management units to form a larger-scale energy storage unit, providing high-voltage, high-capacity electrical energy storage. Each battery pack is fixed by a battery cluster rack.

[0003] To save space and improve space utilization, two energy storage battery clusters can be stacked vertically to form a double-layer battery cluster. For the liquid cooling system of the double-layer battery cluster, please refer to [link / reference needed]. Figure 1 Existing liquid cooling piping arrangements often require two independent primary piping systems (the primary piping system includes a main inlet pipe 110 and a main outlet pipe 120). Each primary piping system supplies liquid cooling to each battery pack within a single level of the battery cluster, resulting in high piping costs and large space requirements. (See also...) Figure 2 If a single primary pipeline (including a main inlet pipeline 110 and a main outlet pipeline 120) is used to supply liquid cooling to each battery pack in the two levels of the battery cluster, the flow uniformity and temperature uniformity in each battery pack will be poor, which will affect the life of the energy storage battery and result in high flow resistance. Utility Model Content

[0004] This invention provides a battery cluster and an energy storage container to solve the technical problem of poor flow equalization and temperature uniformity in the liquid cooling system of double-layer or multi-layer battery clusters, which affects the lifespan of energy storage batteries.

[0005] This utility model provides a battery cluster, the battery cluster comprising: The bracket has multiple mounting positions along the height direction of the battery cluster. Multiple battery packs are installed in the mounting positions of each layer, and each battery pack has a liquid inlet and a liquid outlet. The liquid inlet pipe assembly includes a main liquid inlet pipe, two branch liquid inlet pipes, and multiple inlet branch pipes. The two branch liquid inlet pipes are connected in parallel to the main liquid inlet pipe. Each branch liquid inlet pipe has multiple parallel branch liquid inlet pipes distributed along the height direction of the battery cluster. The branch liquid inlet pipes of the two branch liquid inlet pipes are arranged alternately along the height direction of the battery cluster. Each branch liquid inlet pipe is connected to the liquid inlet interface of the corresponding layer of the battery pack. The liquid inlet interfaces of two adjacent layers of the battery pack are connected to different branch liquid inlet pipes. The liquid outlet pipe assembly includes a main liquid outlet pipe, two branch liquid outlet pipes, and multiple branch liquid outlet pipes. The two branch liquid outlet pipes are connected in parallel to the main liquid outlet pipe. Each branch liquid outlet pipe has multiple branch liquid outlet pipes connected in parallel along the height direction of the battery cluster. The branch liquid outlet pipes of the two branch liquid outlet pipes are arranged alternately along the height direction of the battery cluster. Each branch liquid outlet pipe is connected to the liquid outlet interface of the corresponding layer of the battery pack. The liquid outlet interfaces of two adjacent layers of the battery pack are connected to different branch liquid outlet pipes.

[0006] In one embodiment of the present invention, the two liquid inlet pipes are located on the first side of the battery cluster, and the two liquid outlet pipes are located on the second side of the battery cluster. The first side and the second side are two opposite sides of the battery cluster.

[0007] In one embodiment of the present invention, the liquid inlet of each battery pack is close to the first side, and the liquid outlet of each battery pack is close to the second side.

[0008] In one embodiment of the present invention, one of the liquid inlet pipes and one of the liquid outlet pipes are located on the first side of the battery cluster, and the other liquid inlet pipe and the other liquid outlet pipe are located on the second side of the battery cluster. The first side and the second side are opposite sides of the battery cluster.

[0009] In one embodiment of the present invention, the liquid inlet ports of the battery packs in the upper and lower adjacent layers are respectively close to the opposite sides of the battery cluster, and the liquid outlet ports of the battery packs in the upper and lower adjacent layers are respectively close to the opposite sides of the battery cluster.

[0010] In one embodiment of the present invention, the liquid inlet pipe located on the first side is connected to the liquid inlet interface of the battery pack near the first side, the liquid outlet pipe located on the first side is connected to the liquid outlet interface of the battery pack near the first side, the liquid inlet pipe located on the second side is connected to the liquid inlet interface of the battery pack near the second side, and the liquid outlet pipe located on the second side is connected to the liquid outlet interface of the battery pack near the second side. Alternatively, the inlet branch pipe located on the first side is connected to the inlet port of the battery pack near the first side, the outlet branch pipe located on the first side is connected to the outlet port of the battery pack near the second side, the inlet branch pipe located on the second side is connected to the inlet port of the battery pack near the second side, and the outlet branch pipe located on the second side is connected to the outlet port of the battery pack near the first side, wherein the length of the outlet branch pipe is greater than the length of the inlet branch pipe. Alternatively, the liquid inlet branch pipe located on the first side is connected to the liquid inlet port of the battery pack near the second side, the liquid outlet branch pipe located on the first side is connected to the liquid outlet port of the battery pack near the first side, the liquid inlet branch pipe located on the second side is connected to the liquid inlet port of the battery pack near the first side, and the liquid outlet branch pipe located on the second side is connected to the liquid outlet port of the liquid cooling plate of the battery pack near the second side, wherein the length of the liquid inlet branch pipe is greater than the length of the liquid outlet branch pipe.

[0011] In one embodiment of the present invention, each of the liquid inlet pipes includes at least two liquid inlet pipe sections, which are connected to each other by a connector; each of the liquid outlet pipes includes at least two liquid outlet pipe sections, which are connected to each other by a connector.

[0012] In one embodiment of the present invention, the lengths of the plurality of inlet branch pipes connected in parallel on each inlet branch pipe are equal; the lengths of the plurality of outlet branch pipes connected in parallel on each outlet branch pipe are equal.

[0013] In one embodiment of the present invention, the battery cluster further includes a shut-off valve, which is disposed on each of the liquid inlet branch pipes and the liquid outlet branch pipes.

[0014] Based on the same concept, this utility model also provides an energy storage container, including multiple battery clusters as described above, the multiple battery clusters are arranged side by side, each battery cluster is provided with the liquid inlet pipe group and the liquid outlet pipe group, and each battery cluster shares the liquid inlet main pipe and the liquid outlet main pipe.

[0015] The beneficial effects of this utility model are as follows: The battery cluster and energy storage container proposed in this utility model are configured with two liquid inlet pipes connected in parallel to a main liquid inlet pipe. Multiple liquid inlet branch pipes are alternately connected in parallel along the height direction on the two liquid inlet pipes. Each liquid inlet branch pipe is connected to the liquid inlet interface of the corresponding layer of the battery pack, and the liquid inlets of adjacent battery packs are connected to different liquid inlet pipes. Similarly, two liquid outlet pipes are connected in parallel to a main liquid outlet pipe. Multiple liquid outlet branch pipes are alternately connected in parallel along the height direction on the two liquid outlet pipes. Each liquid outlet branch pipe is connected to the liquid outlet interface of the corresponding layer of the battery pack, and the liquid outlet interfaces of adjacent battery packs are connected to different liquid outlet branch pipes. This alternating liquid inlet and outlet method can achieve better flow uniformity, improve the temperature uniformity of the battery cluster, and reduce the flow resistance of the liquid, thereby improving the lifespan of the energy storage battery. Furthermore, using only one set of main liquid inlet and main liquid outlet pipes reduces pipeline costs and minimizes the space occupied by the pipelines. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the layout of a liquid cooling pipeline for a battery cluster. Figure 2 This is a schematic diagram of the liquid cooling pipeline layout for another type of battery cluster; Figure 3 This is a schematic diagram of the overall structure of a battery cluster provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the inlet pipe assembly and the outlet pipe assembly provided in an embodiment of the present invention; Figure 5 for Figure 4 The right view in the middle; Figure 6 This is a schematic diagram of the structure of the inlet and outlet manifolds provided in an embodiment of the present invention; Figure 7 A schematic diagram of the layout of the inlet pipe assembly and the outlet pipe assembly provided in an embodiment of this utility model; Figure 8 A schematic diagram of the layout of the inlet pipe assembly and the outlet pipe assembly provided for another embodiment of the present utility model; Figure 9 A schematic diagram of the layout of the inlet pipe assembly and the outlet pipe assembly provided in another embodiment of the present utility model; Figure 10 A schematic diagram of the layout of the inlet pipe assembly and the outlet pipe assembly provided in another embodiment of the present utility model; Figure 11 This is a schematic diagram of the arrangement of multiple battery clusters according to an embodiment of the present invention.

[0018] The attached figures are labeled as follows: 110 - Main water inlet pipe; 120 - Main water outlet pipe; 10-Bracket; 101-First side; 102-Second side; 20-battery pack; 31-Inlet port; 32-Outlet port; 41-Main inlet pipe; 42-Branch inlet pipe; 42a-Branch inlet pipe section; 421-First inlet branch pipe; 422-Second inlet branch pipe; 43-Branch inlet pipe; 51-Main outlet pipe; 52-Branch outlet pipe; 521-First branch outlet pipe; 522-Second branch outlet pipe; 52a-Branch outlet pipe section; 53-Branch outlet pipe; 60 - Connector; 70 - Cable tie. Detailed Implementation

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0022] Please see Figures 3 to 6 , Figure 3A battery cluster provided in one embodiment of the present invention includes: a support 10, multiple battery packs 20, an inlet pipe assembly, and an outlet pipe assembly. The support 10 has multiple mounting positions along the height of the battery cluster. The multiple battery packs 20 are correspondingly installed in each mounting position, and each battery pack 20 has an inlet port 31 and an outlet port 32. The support 10 provides support and fixation for each battery pack 20, and the multiple mounting positions of the support 10 provide an orderly installation space for the battery packs 20. In this example, the support 10 is divided into upper and lower groups along the height of the battery cluster, each group having eight mounting positions, and the multiple battery packs 20 are correspondingly installed in each mounting position. Each battery pack 20 has a liquid cooling plate for heat dissipation. The liquid cooling plate has a cooling channel inside. The liquid inlet 31 and the liquid outlet 32 ​​are connected to the liquid cooling plate of the battery pack 20. The liquid inlet 31 and the liquid outlet 32 ​​of each battery pack 20 are respectively close to the opposite sides of the battery cluster, namely the first side 101 and the second side 102 of the battery cluster.

[0023] The liquid inlet pipe group includes a main liquid inlet pipe 41, two liquid inlet branch pipes 42 and multiple liquid inlet branch pipes 43. The two liquid inlet branch pipes 42 are connected in parallel to the main liquid inlet pipe 41. Multiple parallel liquid inlet branch pipes 43 are distributed on each liquid inlet branch pipe 42 along the height direction of the battery cluster. The liquid inlet branch pipes 43 of the two liquid inlet branch pipes 42 are arranged alternately along the height direction of the battery cluster. Each liquid inlet branch pipe 43 is connected to the liquid inlet interface 31 of the corresponding layer of the battery pack 20. The liquid inlet interfaces 31 of two adjacent layers of battery pack 20 are connected to different liquid inlet branch pipes 42. The liquid outlet pipe assembly includes a main liquid outlet pipe 51, two branch liquid outlet pipes 52, and multiple branch liquid outlet pipes 53. The two branch liquid outlet pipes 52 are connected in parallel to the main liquid outlet pipe 51. Each branch liquid outlet pipe 52 has multiple parallel branch liquid outlet pipes 53 distributed along the height direction of the battery cluster. The branch liquid outlet pipes 53 of the two branch liquid outlet pipes 52 are arranged alternately along the height direction of the battery cluster. Each branch liquid outlet pipe 53 is connected to the liquid outlet interface 32 of the corresponding layer of the battery pack 20. The liquid outlet interfaces 32 of two adjacent layers of battery pack 20 are connected to different branch liquid outlet pipes 52.

[0024] Specifically, the inlet manifold 41 and the outlet manifold 51 can be located at the bottom of the support 10. The support 10 includes multiple longitudinal beams extending vertically and multiple transverse beams extending horizontally. The inlet branch pipes 42 and the outlet branch pipes 52 are vertically arranged on the longitudinal beams along the height direction of the battery cluster. Of the four pipes consisting of two inlet branch pipes 42 and two outlet branch pipes 52, two are located on the first side 101 of the battery cluster. Figure 3 (on the right side of the battery cluster), and two others located on the second side of the battery cluster, 102. Figure 3 (on the left side of the battery cluster), and the first side 101 and the second side 102 are opposite sides of the battery cluster. The two branches located on the same side can be connected by cable ties 70.

[0025] The main inlet pipe 41 is connected in parallel with two branch inlet pipes 42, so that the liquid in the main inlet pipe 41 can be distributed to the two branch inlet pipes 42 simultaneously and evenly, ensuring that the liquid flow rate and pressure in the two branch inlet pipes 42 are basically the same.

[0026] Multiple inlet branch pipes 43 are connected in parallel to each inlet manifold 42, and the inlet branch pipes 43 of two inlet manifolds 42 are arranged alternately along the height direction of the battery cluster. The inlet interfaces 31 of two adjacent battery packs 20 are connected to different inlet manifolds 42. This alternating arrangement makes the liquid distribution in the height direction of the battery cluster more uniform, avoiding the problem that the thermal management effect of the battery packs 20 at different heights of the battery cluster is greatly different due to the concentrated arrangement of the inlet branch pipes 43 of the same inlet manifold 42 on one side or in one area. It can achieve better flow uniformity, improve the temperature uniformity of the battery cluster, and reduce the flow resistance of the liquid.

[0027] The main outlet pipe 51 is connected in parallel with two branch outlet pipes 52, which enables the liquid discharged from each battery pack 20 to be evenly collected into the main outlet pipe 51, ensuring a smooth and stable liquid discharge process and avoiding excessively high or low internal pressure in some battery packs 20 due to uneven liquid discharge, which would affect the performance and safety of the battery pack 20.

[0028] Multiple outlet branch pipes 53 are connected in parallel to each outlet branch pipe 52, and the outlet branch pipes 53 of two outlet branch pipes 52 are arranged alternately along the height direction of the battery cluster. The outlet interfaces 32 of two adjacent battery packs 20 are connected to different outlet branch pipes 52. This alternating arrangement makes the discharge of liquid in the height direction of the battery cluster more uniform, which helps to maintain the pressure balance inside the battery cluster. It also helps to achieve better flow equalization, improve the temperature uniformity of the battery cluster, and reduce the flow resistance of the liquid, thereby improving the life of the energy storage battery. Furthermore, since only one set of inlet main pipe 41 and outlet main pipe 51 is used, the pipeline cost is reduced and the pipeline space occupied is reduced.

[0029] In the following description, for ease of understanding, the two liquid inlet pipes 42 are respectively the first liquid inlet pipe 421 and the second liquid inlet pipe 422, and multiple liquid inlet branch pipes 43 are alternately connected in parallel along the height direction of the battery cluster on the first liquid inlet pipe 421 and the second liquid inlet pipe 422; the two liquid outlet pipes 52 are respectively the first liquid outlet pipe 521 and the second liquid outlet pipe 522, and multiple liquid outlet branch pipes 53 are alternately connected in parallel along the height direction of the battery cluster on the first liquid outlet pipe 521 and the second liquid outlet pipe 522.

[0030] See Figure 7In some embodiments, two liquid inlet pipes 42 are located on the first side 101 of the battery cluster, and two liquid outlet pipes 52 are located on the second side 102 of the battery cluster, with the first side 101 and the second side 102 being opposite sides of the battery cluster. Specifically, in this example, both the first liquid inlet pipe 421 and the second liquid inlet pipe 422 are located on the first side 101 of the battery cluster, and are arranged side by side. Similarly, both the first liquid outlet pipe 521 and the second liquid outlet pipe 522 are located on the second side 102 of the battery cluster, and are also arranged side by side. Arranging the liquid inlet pipes 42 and the liquid outlet pipes 52 on opposite sides of the battery cluster makes the overall piping system layout of the battery cluster more compact and orderly, reducing the additional space occupied by the piping.

[0031] Continue reading Figure 7 In the above embodiment, the liquid inlet 31 of each battery pack 20 is close to the first side 101 of the battery cluster, and the liquid outlet 32 ​​of each battery pack 20 is close to the second side 102 of the battery cluster. The first side 101 and the second side 102 are opposite sides of the battery cluster. Specifically, in this example, the liquid inlet 31 of each battery pack 20 is alternately connected to two liquid inlet branches 42 through the corresponding liquid inlet branch pipes 43, and the liquid outlet 32 ​​of each battery pack 20 is alternately connected to two liquid outlet branches 52 through the corresponding liquid outlet branch pipes 53. Since the liquid inlet 31 of each battery pack 20 is close to the first side 101 where the two liquid inlet branches 42 are located, and the liquid outlet 32 ​​is close to the second side 102 where the two liquid outlet branches 52 are located, the length of each liquid inlet branch pipe 43 on the two liquid inlet branches 42 and each liquid outlet branch pipe 53 on the two liquid outlet branches 52 is shortened. That is, the path of liquid from the liquid inlet branch pipe 42 into the battery pack 20 and from the battery pack 20 to the liquid outlet branch pipe 52 is shortened. The shorter flow path reduces the resistance encountered by the liquid when flowing in the pipeline and reduces the pressure loss.

[0032] At the same pumping power, the liquid can enter and exit the battery pack 20 at a higher flow rate and with a more stable pressure, improving the efficiency of thermal management. The shortened liquid flow path also accelerates the circulation speed of the liquid within the battery pack 20, allowing the temperature of the battery pack 20 to reach and be maintained within a suitable operating range more quickly, which is beneficial for improving the performance and extending the life of the battery pack 20. The liquid inlet 31 and liquid outlet 32 ​​of each battery pack 20 are located close to the corresponding liquid inlet pipe 42 and liquid outlet pipe 52, respectively, so that each battery pack 20 can obtain a uniform flow rate of liquid supply and discharge, ensuring the uniformity of flow in each battery pack 20 and improving the temperature uniformity of the entire battery cluster.

[0033] See Figure 8In other embodiments, one inlet pipe 42 and one outlet pipe 52 are located on the first side 101 of the battery cluster, and the other inlet pipe 42 and the other outlet pipe 52 are located on the second side 102 of the battery cluster, with the first side 101 and the second side 102 being opposite sides of the battery cluster. Specifically, in this example, the first inlet pipe 421 and the first outlet pipe 521 are located on the first side 101 of the battery cluster and are arranged side by side; the second inlet pipe 422 and the second outlet pipe 522 are located on the second side 102 of the battery cluster and are also arranged side by side. This makes the layout of the entire piping system within the battery cluster more compact and orderly, reducing the additional space occupied by the piping.

[0034] In the above embodiment, the liquid inlet ports 31 of two adjacent battery packs 20 are respectively close to opposite sides of the battery cluster, and the liquid outlet ports 32 of two adjacent battery packs 20 are respectively close to opposite sides of the battery cluster. Specifically, in two adjacent battery packs 20, the liquid inlet port 31 of the first battery pack 20 and the liquid outlet port 32 of the second battery pack 20 are close to the same side of the battery cluster, and the liquid outlet port 32 of the first battery pack 20 and the liquid inlet port 31 of the second battery pack 20 are close to the same side of the battery cluster. That is, the positions of the liquid inlet ports 31 and liquid outlet ports 32 of adjacent battery packs 20 are alternately arranged, providing a relatively balanced working environment for each battery pack 20, enabling each battery pack 20 to obtain a uniform flow rate, thereby improving the temperature uniformity of the battery cluster.

[0035] Continue reading Figure 8 In the above embodiment, the liquid inlet pipe 42 located on the first side 101 of the battery cluster is connected to the liquid inlet port 31 of the battery pack 20 near the first side 101 of the battery cluster, the liquid outlet pipe 52 located on the first side 101 of the battery cluster is connected to the liquid outlet port 32 of the battery pack 20 near the first side 101 of the battery cluster, the liquid inlet pipe 42 located on the second side 102 of the battery cluster is connected to the liquid inlet port 31 of the battery pack 20 near the second side 102 of the battery cluster, and the liquid outlet pipe 52 located on the second side 102 of the battery cluster is connected to the liquid outlet port 32 of the battery pack 20 near the second side 102 of the battery cluster.

[0036] Specifically, in this example, the first liquid inlet pipe 421 and the first liquid outlet pipe 521 are located on the first side 101 of the battery cluster. The first liquid inlet pipe 421 is connected to the liquid inlet interface 31 near the first side 101, and the first liquid outlet pipe 521 is connected to the liquid outlet interface 32 near the first side 101. The second liquid inlet pipe 422 and the second liquid outlet pipe 522 are located on the second side 102 of the battery cluster. The second liquid inlet pipe 422 is connected to the liquid inlet interface 31 near the second side 102, and the second liquid outlet pipe 522 is connected to the liquid outlet interface 32 near the second side 102. Thus, by connecting the inlet manifold 42 to the inlet port 31 of the battery pack 20, which is located near itself, and the outlet manifold 52 to the outlet port 32, the lengths of the various inlet and outlet manifolds 43 and 53 are shortened. This significantly reduces the heat transfer path of the liquid from entering to exiting the battery pack 20, reducing flow resistance, pressure loss, and improving heat exchange efficiency. Furthermore, this connection method ensures that each battery pack 20 can uniformly exchange heat with the inlet and outlet manifolds 42 and 52. Since the inlet and outlet ports 31 and 32 of each battery pack 20 are close to their respective manifolds, the flow state of the liquid within each battery pack 20 is relatively consistent, ensuring uniform flow and facilitating uniform heat dissipation, thus guaranteeing the temperature uniformity of the battery cluster. Additionally, it reduces the degree of bending and stretching of the pipes within the battery cluster, resulting in a more rational spatial layout within the battery cluster.

[0037] Or, see Figure 9 In some other embodiments, the liquid inlet branch pipe 42 located on the first side 101 of the battery cluster is connected to the liquid inlet port 31 of the battery pack 20 near the first side 101 of the battery cluster, the liquid outlet branch pipe 52 located on the first side 101 of the battery cluster is connected to the liquid outlet port 32 of the battery pack 20 near the second side 102 of the battery cluster, the liquid inlet branch pipe 42 located on the second side 102 of the battery cluster is connected to the liquid inlet port 31 of the battery pack 20 near the second side 102 of the battery cluster, and the liquid outlet branch pipe 52 located on the second side 102 of the battery cluster is connected to the liquid outlet port 32 of the battery pack 20 near the first side 101 of the battery cluster, and the length of the liquid outlet branch pipe 53 is greater than the length of the liquid inlet branch pipe 43.

[0038] Specifically, the first liquid inlet pipe 421 and the first liquid outlet pipe 521 are located on the first side 101 of the battery cluster. The first liquid inlet pipe 421 is connected to the liquid inlet interface 31 near the first side 101, and the first liquid outlet pipe 521 is connected to the liquid outlet interface 32 near the second side 102. The second liquid inlet pipe 422 and the second liquid outlet pipe 522 are located on the second side 102 of the battery cluster. The second liquid inlet pipe 422 is connected to the liquid inlet interface 31 near the second side 102, and the second liquid outlet pipe 522 is connected to the liquid outlet interface 32 near the first side 101. In this way, the length of each liquid inlet branch pipe 43 on the two liquid inlet pipes 42 is shortened, thus shortening the path for liquid to enter the battery pack 20, while the length of each liquid outlet branch pipe 53 on the two liquid outlet pipes 52 is extended. The shorter liquid inlet path can quickly introduce liquid into the battery pack 20, and the longer liquid outlet path can ensure sufficient heat exchange time. Furthermore, this layout increases the distance between the inlet branch pipe 43 and the outlet branch pipe 53 extending from the same side and the same layer, thus preventing the shut-off valves installed on each inlet branch pipe 43 and outlet branch pipe 53 from interfering with each other.

[0039] Or, see Figure 10 In some other embodiments, the liquid inlet branch pipe 42 located on the first side 101 of the battery cluster is connected to the liquid inlet port 31 of the battery pack 20 near the second side 102 of the battery cluster; the liquid outlet branch pipe 52 located on the first side 101 of the battery cluster is connected to the liquid outlet port 32 of the battery pack 20 near the first side 101 of the battery cluster; the liquid inlet branch pipe 42 located on the second side 102 of the battery cluster is connected to the liquid inlet port 31 of the battery pack 20 near the first side 101 of the battery cluster; the liquid outlet branch pipe 52 located on the second side 102 of the battery cluster is connected to the liquid outlet port 32 of the liquid cooling plate of the battery pack 20 near the second side 102 of the battery cluster; and the length of the liquid inlet branch pipe 43 is greater than the length of the liquid outlet branch pipe 53.

[0040] Specifically, the first liquid inlet pipe 421 and the first liquid outlet pipe 521 are located on the first side 101 of the battery pack. The first liquid inlet pipe 421 is connected to the liquid inlet interface 31 near the second side 102, and the first liquid outlet pipe 521 is connected to the liquid outlet interface 32 near the first side 101. The second liquid inlet pipe 422 and the second liquid outlet pipe 522 are located on the second side 102 of the battery pack. The second liquid inlet pipe 422 is connected to the liquid inlet interface 31 near the first side 101, and the second liquid outlet pipe 522 is connected to the liquid outlet interface 32 near the second side 102. In this way, the length of each liquid outlet branch pipe 53 on the two liquid outlet pipes 52 is shortened, thus shortening the path for the liquid to flow out of the battery pack 20. Meanwhile, the length of each liquid inlet branch pipe 43 on the two liquid inlet pipes 42 is extended. The shorter liquid outlet path reduces the resistance of the liquid during the discharge process, accelerates the heat dissipation speed, and enables the liquid to be quickly led out of the battery pack 20. Furthermore, this layout increases the distance between the inlet branch pipe 43 and the outlet branch pipe 53 extending from the same side and the same layer, thus preventing the shut-off valves installed on each inlet branch pipe 43 and outlet branch pipe 53 from interfering with each other.

[0041] See Figure 6 It is worth mentioning that, in the above embodiments, the inlet manifold 42 includes at least two inlet manifold sections 42a, which are connected by a connector 60; the outlet manifold 52 includes at least two outlet manifold sections 52a, which are connected by a connector 60. This ensures quick connection and disassembly of the inlet manifold 42 and the outlet manifold 52, and also facilitates transportation after disassembly, reducing space occupation.

[0042] Understandably, the multiple inlet branch pipes 43 connected in parallel on each inlet branch pipe 42 are of equal length; similarly, the multiple outlet branch pipes 53 connected in parallel on each outlet branch pipe 52 are of equal length. This facilitates, on the one hand, uniform distribution of liquid flow and balanced heat dissipation, ensuring the uniformity of the inlet and outlet paths, thereby guaranteeing the temperature uniformity of the entire battery cluster; on the other hand, it also facilitates standardized component specifications, making mass production and replacement easier.

[0043] It should be noted that the battery cluster also includes shut-off valves, which are installed on each inlet branch pipe 43 and outlet branch pipe 53. By installing shut-off valves, it is easy to independently control the on / off state and flow rate of each inlet branch pipe 43 and outlet branch pipe 53, and facilitate local maintenance and replacement.

[0044] Based on the same concept, see Figure 11This utility model also provides an energy storage container, including multiple battery clusters as described above. The battery clusters are arranged side by side, and each battery cluster is provided with an inlet pipe group and an outlet pipe group. All battery clusters share a common inlet manifold 41 and an outlet manifold 51. That is, the inlet pipe group and outlet pipe group of each battery cluster share a common inlet manifold 41 and an outlet manifold 51, which reduces pipeline costs and reduces the space occupied.

[0045] In summary, the battery cluster and energy storage container proposed in this utility model are provided by setting two liquid inlet pipes 42 connected in parallel to the liquid inlet main pipe 41. Multiple liquid inlet branch pipes 43 are alternately connected in parallel along the height direction on the two liquid inlet pipes 42. Each liquid inlet branch pipe 43 is connected to the liquid inlet interface 31 of the corresponding layer of battery pack 20, and the liquid inlet interfaces 31 of two adjacent layers of battery pack 20 are connected to different liquid inlet pipes 42. Two liquid outlet manifolds 52 are connected in parallel to the liquid outlet manifold 51. Multiple liquid outlet branch pipes 53 are alternately connected in parallel along the height direction on the two liquid outlet manifolds 52. Each liquid outlet branch pipe 53 is connected to the liquid outlet interface 32 of the corresponding layer of the battery pack 20, and the liquid outlet interfaces 32 of two adjacent layers of battery pack 20 are connected to different liquid outlet manifolds 52. This alternating liquid inlet and outlet method can achieve better flow uniformity, improve the temperature uniformity of the energy storage battery, and reduce the flow resistance of the liquid, thereby improving the life of the energy storage battery. In addition, only one set of liquid inlet manifold 41 and liquid outlet manifold 51 is used, which reduces pipeline cost and reduces the space occupied by the pipeline.

[0046] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A battery cluster, characterized in that, include: The bracket has multiple mounting positions along the height direction of the battery cluster. Multiple battery packs are installed in the mounting positions of each layer, and each battery pack has a liquid inlet and a liquid outlet. The liquid inlet pipe assembly includes a main liquid inlet pipe, two branch liquid inlet pipes, and multiple inlet branch pipes. The two branch liquid inlet pipes are connected in parallel to the main liquid inlet pipe. Each branch liquid inlet pipe has multiple parallel branch liquid inlet pipes distributed along the height direction of the battery cluster. The branch liquid inlet pipes of the two branch liquid inlet pipes are arranged alternately along the height direction of the battery cluster. Each branch liquid inlet pipe is connected to the liquid inlet interface of the corresponding layer of the battery pack. The liquid inlet interfaces of two adjacent layers of the battery pack are connected to different branch liquid inlet pipes. The liquid outlet pipe assembly includes a main liquid outlet pipe, two branch liquid outlet pipes, and multiple branch liquid outlet pipes. The two branch liquid outlet pipes are connected in parallel to the main liquid outlet pipe. Each branch liquid outlet pipe has multiple branch liquid outlet pipes connected in parallel along the height direction of the battery cluster. The branch liquid outlet pipes of the two branch liquid outlet pipes are arranged alternately along the height direction of the battery cluster. Each branch liquid outlet pipe is connected to the liquid outlet interface of the corresponding layer of the battery pack. The liquid outlet interfaces of two adjacent layers of the battery pack are connected to different branch liquid outlet pipes.

2. The battery cluster according to claim 1, characterized in that, The two liquid inlet pipes are located on the first side of the battery cluster, and the two liquid outlet pipes are located on the second side of the battery cluster. The first side and the second side are opposite sides of the battery cluster.

3. The battery cluster according to claim 2, characterized in that, The liquid inlet of each battery pack is located near the first side, and the liquid outlet of each battery pack is located near the second side.

4. The battery cluster according to claim 1, characterized in that, One of the liquid inlet pipes and one of the liquid outlet pipes are located on the first side of the battery cluster, and the other liquid inlet pipe and the other liquid outlet pipe are located on the second side of the battery cluster. The first side and the second side are opposite sides of the battery cluster.

5. The battery cluster according to claim 4, characterized in that, The liquid inlet ports of the battery packs in the upper and lower adjacent layers are respectively close to the opposite sides of the battery cluster, and the liquid outlet ports of the battery packs in the upper and lower adjacent layers are respectively close to the opposite sides of the battery cluster.

6. The battery cluster according to claim 5, characterized in that, The liquid inlet pipe located on the first side is connected to the liquid inlet port of the battery pack near the first side, the liquid outlet pipe located on the first side is connected to the liquid outlet port of the battery pack near the first side, the liquid inlet pipe located on the second side is connected to the liquid inlet port of the battery pack near the second side, and the liquid outlet pipe located on the second side is connected to the liquid outlet port of the battery pack near the second side. Alternatively, the inlet branch pipe located on the first side is connected to the inlet port of the battery pack near the first side, the outlet branch pipe located on the first side is connected to the outlet port of the battery pack near the second side, the inlet branch pipe located on the second side is connected to the inlet port of the battery pack near the second side, and the outlet branch pipe located on the second side is connected to the outlet port of the battery pack near the first side, wherein the length of the outlet branch pipe is greater than the length of the inlet branch pipe. Alternatively, the liquid inlet branch pipe located on the first side is connected to the liquid inlet port of the battery pack near the second side, the liquid outlet branch pipe located on the first side is connected to the liquid outlet port of the battery pack near the first side, the liquid inlet branch pipe located on the second side is connected to the liquid inlet port of the battery pack near the first side, and the liquid outlet branch pipe located on the second side is connected to the liquid outlet port of the liquid cooling plate of the battery pack near the second side, wherein the length of the liquid inlet branch pipe is greater than the length of the liquid outlet branch pipe.

7. The battery cluster according to claim 1, characterized in that, Each of the inlet manifolds includes at least two inlet manifold segments connected to each other via a connector; each of the outlet manifolds includes at least two outlet manifold segments connected to each other via a connector.

8. The battery cluster according to claim 1, characterized in that, The lengths of the multiple inlet branch pipes connected in parallel on each inlet branch pipe are equal; the lengths of the multiple outlet branch pipes connected in parallel on each outlet branch pipe are equal.

9. The battery cluster according to claim 1, characterized in that, The battery cluster also includes a shut-off valve, which is disposed on each of the liquid inlet branch pipes and the liquid outlet branch pipes.

10. An energy storage container, characterized in that, It includes multiple battery clusters as described in any one of claims 1-9, the multiple battery clusters are arranged side by side, each battery cluster is provided with the liquid inlet pipe group and the liquid outlet pipe group, and each battery cluster shares the liquid inlet main pipe and the liquid outlet main pipe.

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