Energy storage device and electric device

Abstract

The application discloses an energy storage device and an electric equipment. The energy storage device comprises a battery cluster and a pipeline structure. The battery cluster comprises a plurality of battery packs. The pipeline structure comprises a thermal regulation unit, a first distributor and a pipeline assembly. The first distributor is provided with an input interface and a plurality of output interfaces. The input interface is in communication with an outlet of the thermal regulation unit. The pipeline assembly comprises a plurality of first pipelines. The plurality of first pipelines correspond to the plurality of battery clusters respectively and correspond to the plurality of output interfaces respectively. A plurality of second pipelines are connected to each first pipeline. The plurality of second pipelines are in communication with the plurality of battery packs respectively. The input interface, the output interface, the first pipeline and the second pipeline are in communication sequentially to form a first flow path. The first flow path is configured to flow the thermal regulation medium pumped by the thermal regulation unit into the battery pack to regulate the temperature of the battery pack.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, specifically to an energy storage device and electrical equipment. Background Technology

[0002] In related technologies, energy storage devices are equipped with multiple battery clusters arranged side-by-side, each cluster consisting of several battery packs. These battery packs generate heat during operation. To ensure the normal operation of the battery packs, energy storage devices typically utilize piping structures to cool them. Specifically, the piping structure includes a thermal regulation unit and piping assemblies. The piping assemblies include a main pipeline, multiple first branch pipes on the main pipeline, and multiple second branch pipes on each first branch pipe. When the thermal regulation unit delivers the thermal regulation medium to the main pipeline, the multiple first branch pipes distribute the thermal regulation medium to each battery cluster, while the multiple second branch pipes further distribute the thermal regulation medium to each battery pack. However, this piping structure design results in numerous bends, tees, reducers, and other pipe fittings, causing the thermal regulation medium to experience significant local and frictional resistance during flow. When there are a large number of battery clusters, in order to overcome the influence of flow resistance, the thermal regulation unit needs to significantly increase its operating power to ensure that battery clusters far away from the thermal regulation unit receive a sufficient supply of thermal regulation medium. This leads to an increase in the power consumption of the thermal regulation unit and reduces the energy efficiency of the energy storage device. Utility Model Content

[0003] In view of the above problems, this application provides an energy storage device and an electrical appliance.

[0004] In a first aspect, this application provides an energy storage device. The energy storage device includes battery clusters and a piping structure. The battery clusters include multiple battery packs. The piping structure includes a thermal regulation unit, a first distributor, and a piping assembly. The first distributor has an input interface and multiple output interfaces. The input interface is connected to the outlet of the thermal regulation unit. The piping assembly includes multiple first pipes, each corresponding to one of the multiple battery clusters and one of the multiple output interfaces. Each first pipe is connected to multiple second pipes, each corresponding to one of the multiple battery packs. The input interface, the output interface, the first pipe, and the second pipe are sequentially connected to form a first flow path. This first flow path is configured to allow a thermal regulation medium pumped by the thermal regulation unit to flow into the battery packs to regulate the temperature of the battery packs.

[0005] In the energy storage device provided in this application, the thermal regulation medium pumped out by the thermal regulation unit can be directly distributed to multiple first pipelines corresponding to multiple battery clusters through a first distributor. The thermal regulation medium in the first pipeline is transported to each battery pack through multiple second pipelines connected to the first pipeline. In this way, the thermal regulation medium will only be subject to local resistance from the connecting pipe between the first pipeline and the second pipeline during the flow process. Compared with related technologies, the flow resistance of the thermal regulation medium is smaller, so that the thermal regulation unit can provide sufficient thermal regulation medium to battery clusters far away from the thermal regulation unit without significantly increasing the operating power. This reduces the power consumption of the thermal regulation unit and improves the energy efficiency of the energy storage device.

[0006] As an optional technical solution of this application, the first distributor is provided with a plurality of spaced-apart first channels, the opposite ends of which are respectively connected to the input interface and the output interface. The input interface includes a plurality of channels, each of which is respectively connected to one of the input interfaces and to one of the output interfaces.

[0007] In the above technical solution, multiple first channels are arranged at intervals, which can reduce cross-interference of the heat-regulating medium when the first distributor distributes the heat-regulating medium, thereby improving flow stability. The first channel is directly connected to the input and output interfaces, that is, the opposite ends of the first channel are directly connected to the input and output interfaces respectively, and the input interface, the first channel, the output interface, the first pipeline, and the second pipeline are connected in sequence to form the first flow path.

[0008] As an optional technical solution of this application, the first distributor is provided with a plurality of first channels arranged at intervals, and the opposite ends of the first channels are respectively connected to the input interface and the output interface. The input interface includes one, and the plurality of first channels are respectively connected to the plurality of output interfaces.

[0009] In the above technical solution, multiple first channels are arranged at intervals, which can reduce cross-interference of the heat-regulating medium when the first distributor distributes the heat-regulating medium, thereby improving flow stability. The connection between the first channel and the input and output interfaces is not direct; that is, the first distributor has a buffer cavity, and the first channel is connected to the input interface through the buffer cavity. The input interface, buffer cavity, first channel, output interface, first pipeline, and second pipeline are sequentially connected to form the first flow path.

[0010] As an optional technical solution of this application, the extension directions of the plurality of first channels are arranged parallel to each other.

[0011] In the above technical solution, the extension directions of the multiple first channels are arranged in parallel to each other, which can ensure that the lengths of the multiple first channels are basically the same. This avoids excessive differences in flow resistance when the thermal regulation medium flows in different channels due to different lengths of the first channels, thereby achieving uniform flow distribution. This is beneficial to ensuring the consistency of heat dissipation of multiple battery packs, and thus improving the thermal management performance of the energy storage device.

[0012] As an optional technical solution of this application, the flow area of ​​multiple first channels is the same.

[0013] In the above technical solution, the flow area of ​​multiple first channels is the same, that is, the effective cross-sectional area through which the heating regulating medium passes is the same. This can help to achieve the average distribution of the heating regulating medium by the first distributor, reduce the possibility of uneven flow distribution between battery clusters or even battery packs, thereby ensuring the consistency of heat dissipation of multiple battery packs and improving the thermal management performance of the energy storage device.

[0014] As an optional technical solution of this application, the extension directions of the multiple first channels are arranged in parallel to each other, and the flow areas of the multiple first channels are the same.

[0015] In the above technical solution, the first distributor can achieve even distribution of the thermal regulation medium, and the flow resistance difference of the thermal regulation medium is small when flowing in different flow patterns. This reduces the possibility of uneven flow distribution between battery clusters or even battery packs, which helps to ensure the consistency of heat dissipation of multiple battery packs, avoids local overheating, and thus improves the thermal management performance of the energy storage device and extends the overall lifespan of the energy storage device. It should be noted that in the embodiments of this application, the extension direction of the multiple first channels can be linear.

[0016] As an optional technical solution of this application, multiple first pipelines are arranged in parallel with each other.

[0017] In the above technical solution, after the thermal regulation medium is pumped out from the thermal regulation unit, it can immediately enter the first distributor through the input interface and be divided into multiple streams by multiple first channels. Then, it is distributed to multiple first pipelines through multiple output interfaces, thereby allowing the thermal regulation medium to be directly delivered to multiple battery clusters via these pipelines. The multiple first pipelines are arranged in parallel, ensuring that their lengths are approximately the same. This minimizes the difference in flow resistance of the thermal regulation medium as it flows through all the first pipelines, reducing the flow resistance differences between different first flow paths. This promotes uniform flow distribution, ensures consistent heat dissipation of the battery pack, avoids localized overheating, extends the overall lifespan of the battery pack, and improves the thermal management effect of the energy storage device. Furthermore, the parallel arrangement of the multiple first pipelines also makes their layout more regular, improving the visual appearance of the pipeline assembly.

[0018] As an optional technical solution of this application, multiple second pipelines are arranged in parallel with each other.

[0019] In the above technical solution, after the thermal regulation medium is pumped out from the thermal regulation unit, it can immediately enter the first distributor through the input interface and be divided into multiple streams by multiple first channels. Then, it is distributed to multiple first pipelines through multiple output interfaces, allowing the thermal regulation medium to be directly delivered to multiple battery clusters via these first pipelines. Subsequently, the thermal regulation medium can be delivered to each battery pack through multiple second pipelines on each first pipeline. The multiple second pipelines are arranged in parallel, ensuring that their lengths are approximately the same. This minimizes the difference in flow resistance when the thermal regulation medium flows through different second pipelines, reducing the flow resistance difference across different first flow paths. This promotes uniform flow distribution, ensures consistent heat dissipation in the battery packs, avoids localized overheating, extends the overall lifespan of the battery packs, and improves the thermal management effect of the energy storage device. Furthermore, the parallel arrangement of the multiple second pipelines also makes their layout more regular, improving the visual appearance of the pipeline assembly.

[0020] As an optional technical solution of this application, multiple first pipelines are arranged in parallel with each other, and multiple second pipelines are arranged in parallel with each other.

[0021] In the above technical solution, after the thermal regulation medium is pumped out from the thermal regulation unit, it can immediately enter the first distributor through the input interface and be divided into multiple streams by multiple first channels. Then, it is distributed to multiple first pipelines through multiple output interfaces, thereby allowing the thermal regulation medium to be directly delivered to multiple battery clusters via multiple first pipelines. Subsequently, the thermal regulation medium can be delivered to each battery pack through multiple second pipelines on each first pipeline. The multiple first pipelines and multiple second pipelines are arranged in parallel to each other. This ensures that the flow resistance difference of the thermal regulation medium is small when flowing in different first and second pipelines, thereby reducing the flow resistance difference of the thermal regulation medium on different first flow paths. This facilitates uniform flow distribution, ensures consistent heat dissipation of the battery pack, avoids local overheating, extends the overall lifespan of the battery pack, and improves the thermal management effect of the energy storage device. Furthermore, the parallel arrangement of the multiple first and second pipelines also makes the arrangement of the pipeline components more regular, which is beneficial to improving the visual effect of the pipeline components.

[0022] As an optional technical solution of this application, the pipeline structure further includes a second distributor, which has a first interface and multiple second interfaces. The first interface is connected to the inlet of the thermal regulation unit. The pipeline assembly also includes multiple third pipelines, which correspond to multiple battery clusters and multiple second interfaces respectively. Each third pipeline is connected to multiple fourth pipelines, which are respectively connected to multiple battery packs. The fourth pipelines, third pipelines, second interfaces, and first interfaces are sequentially connected to form a second flow path, which is configured to allow the thermal regulation medium in the battery pack to flow back to the thermal regulation unit.

[0023] In the above technical solution, after the thermal regulating medium regulates the temperature of the battery pack, the thermal regulating medium can flow into the third pipeline connected to the fourth pipeline through the fourth pipeline, and the thermal regulating medium in the third pipeline can flow into the second distributor through the second interface, and after the second distributor is merged, it flows back to the thermal regulating unit through the first interface. In this way, the first flow path can cooperate with the second flow path to jointly realize the circulation of the thermal regulating medium.

[0024] As an optional technical solution of this application, the second distributor and the first distributor are an integral structure.

[0025] In the above technical solution, the second distributor and the first distributor are integrated into one structure. On the one hand, this can reduce the number of parts in the pipeline structure, simplify the installation steps, and improve the assembly efficiency of the energy storage device. On the other hand, it can connect multiple first pipelines and multiple third pipelines of the pipeline assembly to the same integrated structure, which is convenient for installation and maintenance. Furthermore, it can make the first distributor and the second distributor form a more compact integrated structure, reducing the space occupied by the pipeline structure.

[0026] As an optional technical solution of this application, the second distributor and the first distributor are separate structures.

[0027] In the above technical solution, the second distributor and the first distributor are separate structures. This facilitates the individual maintenance or replacement of a single distributor, improves the maintainability of the pipeline structure, and reduces maintenance costs. On the other hand, it allows for the adaptive adjustment of the installation positions of the first and second distributors in the energy storage device according to specific needs, achieving flexible layout.

[0028] As an optional technical solution of this application, the second distributor and the first distributor are separate structures, and the second distributor and the first distributor are stacked along the height direction of the energy storage device.

[0029] In the above technical solution, the second distributor and the first distributor are stacked along the height direction of the energy storage device. In this way, the multiple first pipes and multiple third pipes of the pipeline assembly can also be stacked along the height direction of the energy storage device, thereby reducing the space occupied by the pipeline assembly in the horizontal direction (the direction perpendicular to the height direction of the energy storage device), saving pipeline layout space, and thus facilitating the miniaturization of the energy storage device.

[0030] As an optional technical solution of this application, the second distributor and the first distributor are an integrated structure integrally formed, the first interface and the input interface are located on the same side of the integrated structure, and the second interface and the output interface are located on the other side of the integrated structure.

[0031] In the above technical solution, the first interface and the input interface are spaced apart on the same side of the integrated structure, and the second interface and the output interface are spaced apart on the other side of the integrated structure. That is, all interfaces on the integrated structure for the inflow of the heating regulation medium into the integrated structure are concentrated on one side, and all interfaces for the outflow of the heating regulation medium from the integrated structure are concentrated on the other side. This facilitates the connection between the integrated structure and external pipelines. For example, the first pipeline connected to the output interface and the third pipeline connected to the second interface can be arranged on the same side of the integrated structure, thereby preventing pipeline crossing and facilitating a reasonable pipeline layout.

[0032] As an optional technical solution of this application, the second distributor is provided with a plurality of spaced-apart second channels, the opposite ends of which are respectively connected to the second interface and the first interface. The first interface includes a plurality of channels, each of which is respectively connected to a plurality of the first interfaces and also to a plurality of the second interfaces.

[0033] In the above technical solution, multiple second channels are arranged at intervals, which can reduce cross-interference of the heat-regulating medium when the second distributor merges the heat-regulating medium, thereby improving flow stability. The second channel is directly connected to the first and second interfaces, that is, the opposite ends of the second channel are directly connected to the first and second interfaces respectively, and the fourth pipe, the third pipe, the second interface, the second channel and the first interface are connected in sequence to form the first flow path.

[0034] As an optional technical solution of this application, the second distributor is provided with a plurality of spaced-apart second channels, the opposite ends of which are respectively connected to the second interface and the first interface. The first interface includes one unit, and the plurality of second channels are respectively connected to the plurality of second interfaces.

[0035] In the above technical solution, multiple second channels are arranged at intervals, which reduces cross-interference of the heat-regulating medium when it converges in the second distributor, thereby improving flow stability. The connection between the second channel and the first and second interfaces is not direct; that is, the second distributor has a buffer cavity, and the second channel is connected to the first interface through the buffer cavity. Furthermore, the fourth pipe, the third pipe, the second interface, the buffer cavity, the second channel, and the first interface are sequentially connected to form the first flow path.

[0036] As an optional technical solution of this application, the battery pack includes a battery cell and a heat exchange plate. The heat exchange plate is configured to cool the battery cell. The heat exchange plate has a first connector and a second connector. The first connector is connected to a second pipeline, and the second connector is connected to a fourth pipeline.

[0037] In the above technical solution, the second pipeline allows the heat regulation medium flowing from the outlet of the heat regulation unit to flow into the internal channel of the heat exchange plate through the first connector. The heat regulation medium flowing into the heat exchange plate regulates the temperature of the battery cell, such as removing the heat generated by the charging and discharging of the battery cell, and then flows out through the second connector. That is, the heat regulation medium after regulating the temperature of the battery cell enters the fourth pipeline through the second interface, and then flows back to the inlet of the heat regulation unit, thus entering the heat regulation unit. It can be understood that the heat regulation medium entering the heat regulation unit, after being internally cooled or heated, will flow back into the second pipeline from the outlet of the heat regulation unit, thereby realizing the circulation of the heat regulation medium.

[0038] As an optional technical solution of this application, the energy storage device further includes a housing, the housing having a receiving cavity, and multiple battery clusters and the thermal regulation unit being arranged side by side in the receiving cavity along a first direction. The first connector, the second connector, and the pipeline assembly are located on the same side of the battery clusters in a second direction. The first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the height direction of the housing.

[0039] In the above technical solution, the first connector, the second connector, and the pipeline assembly are located on the same side of the battery cluster in the second direction. This facilitates the docking of the heat exchange plate and the pipeline assembly, which is beneficial to improving assembly efficiency. On the other hand, the pipeline assembly is centrally located on one side of the battery cluster in the second direction, which not only facilitates the inspection and maintenance of the pipeline assembly, but also makes the pipeline layout more orderly, which is beneficial to improving the visual effect of the energy storage device.

[0040] Secondly, this application provides an electrical appliance. The electrical appliance includes the energy storage device described in any of the above embodiments.

[0041] In the electrical equipment provided in this application, the heat regulation medium pumped out by the heat regulation unit can be directly distributed to multiple first pipelines corresponding to multiple battery clusters through a first distributor. The heat regulation medium in the first pipeline is then transported to each battery pack through multiple second pipelines connected to the first pipeline. In this way, the heat regulation medium will only be subject to local resistance from the connecting pipes between the first and second pipelines during its flow. Compared with related technologies, the flow resistance of the heat regulation medium is smaller, so that the heat regulation unit can provide sufficient heat regulation medium to battery clusters that are far away from the heat regulation unit without significantly increasing its operating power. This reduces the power consumption of the heat regulation unit and improves the energy efficiency of the energy storage device.

[0042] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0043] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a perspective view of an energy storage device according to certain embodiments of this application; Figure 2 for Figure 1 A three-dimensional schematic diagram of the piping structure in the energy storage device shown; Figure 3 for Figure 2 An enlarged schematic diagram of point III in the pipeline structure shown; Figure 4 This is a three-dimensional schematic diagram of the integrated structure of some embodiments of this application; Figure 5 for Figure 4 A schematic cross-sectional view of the integrated structure shown. Figure 6 This is a schematic diagram of the structure of an electrical device according to certain embodiments of this application.

[0044] The reference numerals in the detailed embodiments are as follows: 1000 Electrical equipment; 100 Energy storage device; 200 High-voltage cable; 300 First power conversion device; 400 Second power conversion device; 10 battery clusters, 11 battery packs; 30 Piping structure, 31 Thermal control unit, 330 Integrated structure, 33 First distributor, 331 Input interface, 332 Output interface, 333 First channel, 35 Piping assembly, 351 First pipeline, 352 Second pipeline, 353 Third pipeline, 354 Fourth pipeline, 37 Second distributor, 371 First interface, 372 Second interface, 373 Second channel; 50 Box body, 51 Receiving cavity, 53 Beam and column, 55 Box body plate; X First direction; Y Second direction; Z Height direction. Detailed Implementation

[0045] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0047] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0048] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0049] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0050] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0051] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this application.

[0052] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms such as "installation", "connection", "linking", and "fixing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components.

[0053] In related technologies, energy storage devices are equipped with multiple battery clusters arranged side-by-side, each cluster consisting of several battery packs. These battery packs generate heat during operation. To ensure the normal operation of the battery packs, energy storage devices typically utilize piping structures to cool them. Specifically, the piping structure includes a thermal regulation unit and piping assemblies. The piping assemblies include a main pipeline, multiple first branch pipes on the main pipeline, and multiple second branch pipes on each first branch pipe. When the thermal regulation unit delivers the thermal regulation medium to the main pipeline, the multiple first branch pipes distribute the thermal regulation medium to each battery cluster, while the multiple second branch pipes further distribute the thermal regulation medium to each battery pack. However, this piping structure design results in numerous bends, tees, reducers, and other pipe fittings, causing the thermal regulation medium to experience significant local and frictional resistance during flow. When there are many battery clusters, the thermal regulation unit needs to significantly increase its operating power to overcome the flow resistance, ensuring a sufficient supply of thermal regulation medium to battery clusters located far from the unit. This leads to increased power consumption of the thermal regulation unit and reduced energy efficiency of the energy storage device. To address these issues, this application provides an energy storage device 100 ( Figure 1 (as shown) and electrical equipment 1000 ( Figure 6 (As shown).

[0054] Firstly, please refer to Figures 1 to 5This application provides an energy storage device 100. The energy storage device 100 includes battery clusters 10 and a piping structure 30. The battery clusters 10 include multiple battery packs 11. The piping structure 30 includes a thermal regulator 31, a first distributor 33, and a piping assembly 35. The first distributor 33 is provided with an input interface 331 and multiple output interfaces 332. The input interface 331 is connected to the outlet of the thermal regulator 31. The piping assembly 35 includes multiple first pipes 351, which correspond to the multiple battery clusters 10 and the multiple output interfaces 332 respectively. Each first pipe 351 is connected to multiple second pipes 352, and the multiple second pipes 352 are respectively connected to the multiple battery packs 11. The input interface 331, the output interface 332, the first pipeline 351 and the second pipeline 352 are connected in sequence to form a first flow path. The first flow path is configured so that the heat regulation medium pumped out by the heat regulation unit 31 flows into the battery pack 11 to regulate the temperature of the battery pack 11.

[0055] Specifically, in the above embodiments, the energy storage device 100 can be a battery energy storage device. The energy storage device 100 can be applied to the power system to realize functions such as demand-side management, peak shaving and valley filling, and rapid adjustment of grid frequency, thereby improving the stability and reliability of grid operation and reducing the impact of new energy power generation systems such as photovoltaic or wind power, which have large instantaneous changes, on the grid.

[0056] Specifically, please combine Figure 1 In some embodiments, the energy storage device 100 further includes a housing 50, which has a receiving cavity 51 in which the battery cluster 10 and the piping structure 30 are housed. The housing 50 is a structure in the energy storage device 100 that can accommodate and protect the battery cluster 10 and the piping structure 30. The cross-sectional shape of the housing 50 includes, but is not limited to, circular, square, triangular, or elliptical shapes. The material of the housing 50 includes, but is not limited to, plastic, aluminum alloy, steel, or carbon fiber composite materials. For example, the housing 50 is made of aluminum alloy, which allows for greater lightness and ease of transport while maintaining rigidity. In some embodiments of this application, the cross-sectional shape of the housing 50 is rectangular.

[0057] More specifically, the housing 50 includes beams and columns 53 and housing panels 55. The beams and columns 53 are connected to the housing panels 55 to form a receiving cavity 51. Multiple battery clusters 10 and thermal regulation units 31 are arranged side-by-side in the receiving cavity 51 along a first direction X (which can be the length direction of the housing 50). The connection between the beams and columns 53 and the housing panels 55 can be detachable or non-detachable. Detachable connections include, but are not limited to, screw connections, snap-fit ​​connections, or a combination of screw connections and snap-fit ​​connections. Non-detachable connections include, but are not limited to, adhesive connections, welding, or a combination of adhesive connections and welding connections.

[0058] The beams and columns 53 are the supporting and connecting frame structures within the box 50. The beams and columns 53 can be strip-shaped, plate-shaped, or a combination of both. In some embodiments of this application, the beams and columns 53 include multiple connected beams and columns. A portion of the beams extends in the same direction as the first direction X, another portion extends in the same direction as the second direction Y (which can be the width direction of the box 50), and the multiple columns extend in the same direction as the height direction Z of the box 50. Specifically, the multiple beams and columns are connected to form a frame structure with a cavity, the cross-sectional shape of which is rectangular.

[0059] The box panel 55 is generally a flat plate structure. In some embodiments of this application, the box panel 55 includes a top plate, side plates, and a bottom plate. The top plate is connected to the top of the frame structure formed by the beams and columns 53, the side plates are connected to the sides of the frame structure formed by the beams and columns 53, and the bottom plate is connected to the bottom of the frame structure formed by the beams and columns 53. Thus, the box panel 55 can enclose the cavity formed by the beams and columns 53, and the box panel 55 and the beams and columns 53 can together form a receiving cavity 51. Specifically, the connection between the box panel 55 and the screws includes, but is not limited to, screw connection, welding, or a combination of screw connection and welding.

[0060] The battery cluster 10 is an assembly composed of multiple energy storage battery packs 11. This assembly can store and release energy by connecting and controlling the cells in the battery packs 11. It is understood that the number of battery packs 11 in the battery cluster 10 can be adaptively adjusted according to the application scenario and capacity of the battery cluster 10. In some embodiments of this application, the cross-sectional shape of the battery cluster 10 is approximately rectangular, wherein the battery cluster 10 and the housing 50 may have approximately the same width and height dimensions, which facilitates the installation and storage of the battery cluster 10 within the housing 50 and improves space utilization. The functions of the battery cluster 10 include, but are not limited to, energy storage, energy dispatch, and energy storage power stations. Specifically, in some applications, the battery cluster 10 can convert electrical energy into chemical energy for storage to meet the electricity demand during peak energy demand periods, thereby playing the role of energy storage. In other applications, the battery cluster 10 can flexibly adjust the supply and demand of electrical energy to achieve energy balance and dispatch, improve energy utilization, thereby playing the role of energy dispatch. In some other applications, the battery cluster 10 can form an energy storage power station to store and dispatch energy on a large scale, providing a reliable energy supply, thereby fulfilling the role of an energy storage power station.

[0061] The battery pack 11 is composed of multiple energy-storing cells and is a module capable of storing and releasing electrical energy. The battery pack 11 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple cells. It is understood that the number of cells in the battery pack 11 can be adaptively adjusted according to the application scenario and capacity of the battery pack 11. Furthermore, multiple battery packs 11 can be stacked along the height Z direction of the housing 50 in the receiving cavity 51, and the battery cluster 10 is provided with multiple cables that can connect the multiple battery packs 11 in series to form the battery cluster 10.

[0062] Please combine Figure 2 and Figure 3 The piping structure 30 refers to a structure for transmitting the heat-regulating medium, which is formed by the thermal regulation unit 31, the first distributor 33, and the piping assembly 35 through a specific connection method. In the embodiments of this application, the piping structure 30 is mainly used for temperature control of the battery pack 11 to ensure that the battery pack 11 operates within a safe temperature range.

[0063] The thermal regulation unit 31 is a device in the piping structure 30 used to control the thermal regulation medium. It can control the temperature of the thermal regulation medium at least through energy conversion (such as converting electrical energy to heat energy) or heat exchange, such as heating or cooling the thermal regulation medium. In summer or when the ambient temperature is high, the thermal regulation unit 31 can provide cooling to lower the temperature of the thermal regulation medium, thus cooling the battery pack 11. In winter or when the ambient temperature is low, the thermal regulation unit 31 can provide heat to raise the temperature of the thermal regulation medium, thus heating the battery pack 11. For example, the thermal regulation unit 31 includes a liquid cooling unit, which can provide cooling to lower the temperature of the thermal regulation medium, thereby cooling the battery pack 11 after it flows into it. In some embodiments of this application, the heat conditioning unit 31 has a generally rectangular cross-sectional shape. The heat conditioning unit 31 and the housing 50 may have approximately the same width and height dimensions, which facilitates the installation and storage of the heat conditioning unit 31 within the housing 50 and improves space utilization. The heat conditioning unit 31 may include a liquid pump, which is a power source for providing power for the flow of the heat conditioning medium. The liquid pump may be a centrifugal pump, a gear pump, or a canned motor pump. The liquid pump is driven by a motor with adjustable speed, thereby changing the circulation flow rate of the heat conditioning medium.

[0064] Please combine Figure 4 and Figure 5The first distributor 33 is a device for distributing a single fluid to multiple branches, ensuring balanced flow or on-demand distribution. In some embodiments of this application, the first distributor 33 may be made of cast aluminum alloy. The first distributor 33 can receive the thermostatic medium pumped out by the thermostatic unit 31 through the input interface 331 and distribute the thermostatic medium to each branch (i.e., multiple first pipelines 351) through multiple output interfaces 332. In some embodiments, the first distributor 33 is directly installed on the outlet of the thermostatic unit 31, that is, the input interface 331 can be directly connected to the outlet of the thermostatic unit 31. In other embodiments, the input interface 331 can be connected to the outlet of the thermostatic unit 31 through a pipe (such as a very short straight pipe section).

[0065] Piping assembly 35 can be used to connect the first distributor 33 and the battery pack 11. Specifically, piping assembly 35 can transmit the heat regulation medium output from the heat regulation unit 31 to the object requiring temperature control. In this embodiment, the input interface 331, output interface 332, first pipe 351, and second pipe 352 are sequentially connected to form a first flow path, and the heat regulation medium flows into the battery pack 11 through the first flow path. That is, the flow direction of the heat regulation medium in the first flow path is from the heat regulation unit 31 to the battery pack 11. The number of first flow paths can be the same as the number of battery packs 11, that is, the heat regulation medium pumped out by the heat regulation unit 31 can flow into multiple battery packs 11 through multiple first flow paths to regulate the temperature of the battery packs 11.

[0066] Specifically, after the thermal regulating unit 31 pumps the thermal regulating medium out of its outlet, the first distributor 33 receives the pumped thermal regulating medium through the input interface 331 and distributes it through multiple output interfaces 332 into multiple first pipes 351 corresponding to multiple battery clusters 10. The thermal regulating medium in the first pipes 351 can flow into the corresponding battery pack 11 through multiple second pipes 352 to regulate the temperature of the battery pack 11. The first pipes 351 and second pipes 352 can be made of metallic materials (such as copper, stainless steel, etc.) or non-metallic materials (such as PEX, PPR, etc.).

[0067] It should be noted that, in some embodiments, the heat conditioning medium is a working fluid that flows in the piping assembly 35 and is used to carry and transfer heat. The heat conditioning medium can be water, an aqueous solution of ethylene glycol, an aqueous solution of propylene glycol, or other types of antifreeze or heat transfer oil.

[0068] In the energy storage device 100 provided in this application, the heat-regulating medium pumped out by the heat-regulating unit 31 can be directly distributed by the first distributor 33 to multiple first pipes 351 corresponding to multiple battery clusters 10, and the heat-regulating medium in the first pipes 351 is transported to each battery pack 11 through multiple second pipes 352 connected to the first pipes 351. In this way, the heat-regulating medium will only be subject to local resistance from the connecting pipes (such as elbows) between the first pipes 351 and the second pipes 352 during the flow process. Compared with related technologies, the flow resistance of the heat-regulating medium is significantly reduced. The reduced resistance eliminates most of the frictional resistance caused by long main pipelines in related technologies, as well as the localized resistance caused by multiple tees, elbows, and other pipe fittings on the main pipeline. This allows the thermal regulation unit 31 to provide sufficient thermal regulation medium to the battery cluster 10, which is located far from the thermal regulation unit 31, without significantly increasing its operating power. In other words, the liquid pump in the thermal regulation unit 31 only needs a lower head to drive the flow of the thermal regulation medium, significantly reducing the operating power consumption of the liquid pump. This, in turn, reduces the power consumption of the thermal regulation unit 31 and improves the energy efficiency of the energy storage device 100. Preliminary fluid simulation calculations show that the pipeline structure 30 design of this application can reduce the total system flow resistance by approximately 20%-40%, resulting in a significant reduction in the power consumption of the thermal regulation unit 31.

[0069] Furthermore, compared to related technologies where the heat regulation medium needs to be transmitted to the battery pack 11 through the main pipeline, the first branch pipe, and the second branch pipe, in this embodiment, the heat regulation medium only needs to be transmitted to the battery pack 11 through the first pipeline 351 and the second pipeline 352. This reduces the use of structural components such as pipes, elbows, tees, flanges, and fasteners, thereby reducing material costs, assembly difficulty, and maintenance complexity. At the same time, it also reduces potential leakage points caused by too many interfaces, which is beneficial to improving the sealing reliability and maintainability of the energy storage device 100.

[0070] Please see Figure 1 , Figure 3 and Figure 5 As an optional technical solution of this application, the first distributor 33 is provided with a plurality of first channels 333 arranged at intervals, and the two ends of the first channels 333 are respectively connected to the input interface 331 and the output interface 332.

[0071] The first channel 333 is a flow channel structure formed inside the first distributor 33 for the flow of the heat regulation medium. The cross-sectional shape of the first channel 333 includes, but is not limited to, circles, rectangles, triangles, and trapezoids. The extension direction of the first channel 333 includes, but is not limited to, straight lines, curves, and spirals. For example, the cross-sectional shape of the first channel 333 is circular, and the extension direction of the first channel 333 is straight. This can reduce the flow resistance of the heat regulation medium in the first channel 333, thereby reducing the power consumption of the heat regulation unit 31 and improving the energy efficiency of the energy storage device 100.

[0072] In the above technical solution, multiple first channels 333 are arranged at intervals, which can reduce the cross interference of the heat-regulating medium when the first distributor 33 distributes the heat-regulating medium, thereby improving the flow stability.

[0073] Please combine Figure 5 As an optional technical solution of this application, the input interface 331 includes multiple first channels 333, which are respectively connected to the multiple input interfaces 331 and respectively connected to the multiple output interfaces 332.

[0074] In the above technical solution, the first channel 333 is directly connected to the input interface 331 and the output interface 332. That is, the two ends of the first channel 333 are directly connected to the input interface 331 and the output interface 332 respectively. The input interface 331, the first channel 333, the output interface 332, the first pipe 351 and the second pipe 352 are connected in sequence to form the first flow path.

[0075] As an optional technical solution of this application, the input interface 331 includes one, and multiple first channels 333 are respectively connected to multiple output interfaces 332.

[0076] In the above technical solution, the connection between the first channel 333 and the input interface 331 and the output interface 332 is not direct. That is, the first distributor 33 is provided with a buffer cavity, and the first channel 333 is connected to the input interface 331 through the buffer cavity. The input interface 331, the buffer cavity, the first channel 333, the output interface 332, the first pipeline 351 and the second pipeline 352 are connected in sequence to form the first flow path.

[0077] As an optional technical solution of this application, the extension directions of the multiple first channels 333 are arranged in parallel to each other.

[0078] In the above technical solution, the extension directions of the multiple first channels 333 are arranged parallel to each other. This ensures that the lengths of the multiple first channels 333 are basically the same, avoiding excessive differences in flow resistance when the heat-regulating medium flows in different channels due to different lengths of the first channels 333. This achieves uniform flow distribution, which is beneficial to ensuring the consistency of heat dissipation of multiple battery packs 11, thereby improving the thermal management performance of the energy storage device 100. It should be noted that in some embodiments, the extension directions of the multiple first channels 333 may be linear.

[0079] As an optional technical solution in this application, multiple first channels 333 have the same flow area. It should be noted that the flow area refers to the effective cross-sectional area through which a fluid (such as gas or liquid) actually passes in a pipe, valve, orifice, or other flow channel. The flow area directly determines the fluid's flow capacity and affects flow velocity, flow rate, and pressure loss.

[0080] In the above technical solution, the flow area of ​​the multiple first channels 333 is the same, that is, the effective cross-sectional area through which the heating and regulating medium passes is the same. This can help to achieve the average distribution of the heating and regulating medium by the first distributor 33, reduce the possibility of uneven flow distribution between each battery cluster 10 or even each battery pack 11, thereby ensuring the consistency of heat dissipation of multiple battery packs 11 and improving the thermal management performance of the energy storage device 100.

[0081] Please see Figures 1 to 3 As an optional technical solution of this application, the extension directions of the multiple first channels 333 are arranged in parallel to each other, and the flow areas of the multiple first channels 333 are the same.

[0082] In the above technical solution, the first distributor 33 can achieve an even distribution of the thermal regulation medium, and the flow resistance difference of the thermal regulation medium is small when flowing in different flows. This can reduce the possibility of uneven flow distribution between each battery cluster 10 or even each battery pack 11, which is beneficial to ensure the consistency of heat dissipation of multiple battery packs 11, avoid local overheating, thereby improving the thermal management performance of the energy storage device 100 and extending the overall life of the energy storage device 100. It should be noted that in the embodiments of this application, the extension direction of the multiple first channels 333 can be linear.

[0083] Please combine Figure 5 As an optional technical solution of this application, multiple first pipelines 351 are arranged in parallel with each other.

[0084] In the above technical solution, after the heat-regulating medium is pumped out from the heat-regulating unit 31, it can immediately enter the first distributor 33 through the input interface 331 and be divided into multiple streams by multiple first channels 333. Then, it is distributed to multiple first pipelines 351 through multiple output interfaces 332, so that the heat-regulating medium is directly transported to multiple battery clusters 10 through multiple first pipelines 351. Among them, the multiple first pipelines 351 are arranged in parallel with each other, so that the length of the multiple first pipelines 351 is approximately the same, ensuring that the flow resistance difference of the heat-regulating medium is small when flowing in all the first pipelines 351. This reduces the flow resistance difference of the heat-regulating medium on different first flow paths, which is conducive to achieving uniform flow distribution, ensuring consistent heat dissipation of the battery pack 11, avoiding local overheating, extending the overall life of the battery pack 11, and improving the thermal management effect of the energy storage device 100. In addition, the parallel arrangement of the multiple first pipelines 351 also makes the arrangement of the multiple first pipelines 351 more regular, which is beneficial to improving the visual effect of the pipeline assembly 35.

[0085] As an optional technical solution of this application, multiple second pipelines 352 are arranged in parallel with each other.

[0086] In the above technical solution, after the thermal regulating medium is pumped out from the thermal regulating unit 31, it can immediately enter the first distributor 33 through the input interface 331 and be divided into multiple streams by multiple first channels 333. Then, it is distributed to multiple first pipelines 351 through multiple output interfaces 332, so that the thermal regulating medium is directly transported to multiple battery clusters 10 through multiple first pipelines 351. Subsequently, the thermal regulating medium can be transported to each battery pack 11 through multiple second pipelines 352 on each first pipeline 351. Among them, the multiple second pipelines 352 are arranged in parallel with each other, so that the length of the multiple second pipelines 352 is approximately the same, ensuring that the flow resistance difference of the thermal regulating medium is small when flowing in different second pipelines 352. This reduces the flow resistance difference of the thermal regulating medium in different first flow paths, which is conducive to achieving uniform flow distribution, ensuring consistent heat dissipation of the battery pack 11, avoiding local overheating, extending the overall life of the battery pack 11, and improving the thermal management effect of the energy storage device 100. In addition, the parallel arrangement of multiple second pipes 352 can make the arrangement of multiple second pipes 352 more regular, which is conducive to improving the visual effect of pipe assembly 35.

[0087] As an optional technical solution of this application, multiple first pipelines 351 are arranged in parallel with each other, and multiple second pipelines 352 are arranged in parallel with each other.

[0088] In the above technical solution, after the thermal regulating medium is pumped out from the thermal regulating unit 31, it can immediately enter the first distributor 33 through the input interface 331 and be divided into multiple streams by multiple first channels 333. Then, it is distributed to multiple first pipelines 351 through multiple output interfaces 332, so that the thermal regulating medium is directly transported to multiple battery clusters 10 through multiple first pipelines 351. Subsequently, the thermal regulating medium can be transported to each battery pack 11 through multiple second pipelines 352 on each first pipeline 351. Among them, the multiple first pipelines 351 are arranged in parallel with each other, and the multiple second pipelines 352 are arranged in parallel with each other. This ensures that the flow resistance difference of the thermal regulating medium is small when it flows in different first pipelines 351 and second pipelines 352, thereby reducing the flow resistance difference of the thermal regulating medium in different first flow paths, which is conducive to achieving uniform flow distribution, ensuring consistent heat dissipation of battery pack 11, avoiding local overheating, extending the overall life of battery pack 11, and improving the thermal management effect of energy storage device 100. In addition, the parallel arrangement of multiple first pipes 351 and multiple second pipes 352 can make the arrangement of pipe assembly 35 more regular and improve the visual effect of pipe assembly 35.

[0089] Please see Figures 1 to 5 As an optional technical solution of this application, the pipeline structure 30 further includes a second distributor 37, which has a first interface 371 and multiple second interfaces 372. The first interface 371 is connected to the inlet of the thermal regulation unit 31. The pipeline assembly 35 also includes multiple third pipelines 353, which correspond to multiple battery clusters 10 and multiple second interfaces 372 respectively. Each third pipeline 353 is connected to multiple fourth pipelines 354, which are connected to multiple battery packs 11 respectively. The fourth pipelines 354, third pipelines 353, second interfaces 372 and first interfaces 371 are connected in sequence to form a second flow path, which is configured to allow the thermal regulation medium in the battery packs 11 to flow back to the thermal regulation unit 31.

[0090] The second distributor 37 is a device for converging fluids from multiple branches into a single fluid. In some embodiments of this application, the second distributor 37 may be made of cast aluminum alloy. The second distributor 37 receives the temperature-regulating medium from each branch (i.e., multiple third pipes 353) after temperature regulation of the battery pack 11 through multiple second interfaces 372, and flows the temperature-regulating medium into the temperature regulating unit 31 through the first interface 371. In some embodiments, the second distributor 37 is directly installed on the inlet of the temperature regulating unit 31, that is, the first interface 371 can be directly connected to the inlet of the temperature regulating unit 31. In other embodiments, the first interface 371 can be connected to the inlet of the temperature regulating unit 31 through a pipe (such as a very short straight pipe section).

[0091] The piping assembly 35 is also used to connect the second distributor 37 and the battery pack 11. Specifically, the piping assembly 35 can also channel the heat-regulating medium after temperature adjustment of the object requiring temperature control to the heat-regulating unit 31. In this embodiment, the fourth pipe 354, the third pipe 353, the second interface 372, and the first interface 371 are sequentially connected to form a second flow path, and the heat-regulating medium flows into the heat-regulating unit 31 through the second flow path. That is, the flow direction of the heat-regulating medium in the second flow path is from the battery pack 11 to the heat-regulating unit 31. The number of second flow paths can be the same as the number of battery packs 11, that is, the heat-regulating medium after temperature adjustment of the battery pack 11 can flow back to the heat-regulating unit 31 through the second flow path. In this way, the first flow path can cooperate with the second flow path to jointly realize the circulation of the heat-regulating medium.

[0092] In the above technical solution, after the thermal regulating medium regulates the temperature of the battery pack 11, the thermal regulating medium can flow into the third pipe 353, which is connected to the fourth pipe 354, through the fourth pipe 354. The thermal regulating medium in the third pipe 353 can flow into the second distributor 37 through the second interface 372, and after being combined by the second distributor 37, it flows back to the thermal regulating unit 31 through the first interface 371. In this way, the first flow path can cooperate with the second flow path to jointly realize the circulation of the thermal regulating medium. The third pipe 353 and the fourth pipe 354 can be made of metal materials (such as copper, stainless steel, etc.) or non-metal materials (such as PEX, PPR, etc.). It should be noted that, in some embodiments, the structure and arrangement of the third conduit 353 may be substantially the same as that of the first conduit 351; for example, multiple third conduits 353 may be arranged in parallel with each other. Similarly, the structure and arrangement of the fourth conduit 354 may be substantially the same as that of the second conduit 352; for example, multiple fourth conduits 354 may be arranged in parallel with each other. Furthermore, the third conduit 353 may be parallel to the first conduit 351, and the fourth conduit 354 may be parallel to the second conduit 352.

[0093] Please see Figure 2 , Figure 3 and Figure 5 As an optional technical solution of this application, the second distributor 37 and the first distributor 33 are an integral structure. That is, the second distributor 37 and the first distributor 33 are an integrated structure 330 manufactured using an integral molding process.

[0094] In the above technical solution, the second distributor 37 and the first distributor 33 are integrated into one structure. On the one hand, this can reduce the number of parts in the pipeline structure 30, simplify the installation steps, and improve the assembly efficiency of the energy storage device 100. On the other hand, it can connect multiple first pipelines 351 and multiple third pipelines 353 of the pipeline assembly 35 to the same integrated structure 330, which is convenient for installation and maintenance. Furthermore, it can make the first distributor 33 and the second distributor 37 form a more compact integrated structure, reducing the space occupied by the pipeline structure 30.

[0095] As an optional technical solution of this application, the second distributor 37 and the first distributor 33 are separate structures.

[0096] In the above technical solution, the second distributor 37 and the first distributor 33 are separate structures. This facilitates the individual maintenance or replacement of a distributor, improves the maintainability of the pipeline structure 30, and reduces maintenance costs. On the other hand, it allows for the adaptive adjustment of the installation positions of the first distributor 33 and the second distributor 37 in the energy storage device 100 according to specific needs, achieving a flexible layout.

[0097] As an optional technical solution of this application, the second distributor 37 and the first distributor 33 are separate structures, and the second distributor 37 and the first distributor 33 are stacked along the height direction of the energy storage device 100. It should be noted that, in some embodiments, the height direction of the energy storage device 100 may be parallel to the height direction Z of the housing 50.

[0098] In the above technical solution, the second distributor 37 and the first distributor 33 are stacked along the height direction of the energy storage device 100. In this way, the multiple first pipes 351 and multiple third pipes 353 of the pipeline assembly 35 can also be stacked along the height direction of the energy storage device 100, thereby reducing the space occupied by the pipeline assembly 35 in the horizontal direction (the direction perpendicular to the height direction of the energy storage device 100), saving pipeline layout space, and thus facilitating the miniaturization of the energy storage device 100.

[0099] Please combine Figure 4 As an optional technical solution of this application, the second distributor 37 and the first distributor 33 are integrally formed into an integrated structure 330. The first interface 371 and the input interface 331 are located on the same side of the integrated structure 330, and the second interface 372 and the output interface 332 are located on the other side of the integrated structure 330.

[0100] In the above technical solution, the first interface 371 and the input interface 331 are spaced apart on the same side of the integrated structure 330, while the second interface 372 and the output interface 332 are spaced apart on the other side of the integrated structure 330. That is, all interfaces on the integrated structure 330 used for the inflow of heating and regulating medium into the integrated structure 330 are concentrated on one side, and all interfaces used for the outflow of heating and regulating medium from the integrated structure 330 are concentrated on the other side. This facilitates the connection between the integrated structure 330 and external pipelines. For example, the first pipeline 351 connected to the output interface 332 and the third pipeline 353 connected to the second interface 372 can be arranged on the same side of the integrated structure 330, thereby preventing pipeline crossing and promoting a rational pipeline layout. It should be noted that in this embodiment, the extension directions of the multiple first channels 333 are parallel to each other, and the extension directions of the multiple second channels 373 are parallel to each other. Furthermore, the extension direction of the first channels 333 can be parallel to the extension direction of the second channels 373.

[0101] As an optional technical solution of this application, the second distributor 37 is provided with a plurality of second channels 373 arranged at intervals, and the two ends of the second channels 373 are respectively connected to the second interface 372 and the first interface 371.

[0102] The second channel 373 is a flow channel structure formed inside the second distributor 37 for the flow and transmission of the heat regulation medium. The cross-sectional shape of the second channel 373 includes, but is not limited to, circular, rectangular, triangular, and trapezoidal shapes. The extension direction of the second channel 373 includes, but is not limited to, straight, curved, and spiral shapes. For example, the cross-sectional shape of the second channel 373 is circular, and the extension direction is straight. This reduces the flow resistance of the heat regulation medium in the second channel 373, thereby reducing the power consumption of the heat regulation unit 31 and improving the energy efficiency of the energy storage device 100.

[0103] In the above technical solution, multiple second channels 373 are arranged at intervals, which can reduce the cross interference of the thermal conditioning medium when the second distributor 37 merges the thermal conditioning medium, thereby improving the flow stability.

[0104] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 As an optional technical solution of this application, the first interface 371 includes multiple second channels 373, which are respectively connected to the multiple first interfaces 371 and respectively connected to the multiple second interfaces 372.

[0105] In the above technical solution, the second channel 373 is directly connected to the first interface 371 and the second interface 372, that is, the two ends of the second channel 373 are directly connected to the first interface 371 and the second interface 372 respectively, and the fourth pipe 354, the third pipe 353, the second interface 372, the second channel 373 and the first interface 371 are connected in sequence to form the first flow path.

[0106] As an optional technical solution of this application, the first interface 371 includes one, and multiple second channels 373 are respectively connected to multiple second interfaces 372.

[0107] In the above technical solution, the second channel 373 is not directly connected to the first interface 371 and the second interface 372. That is, the second distributor 37 is provided with a buffer cavity, the second channel 373 is connected to the first interface 371 through the buffer cavity, and the fourth pipe 354, the third pipe 353, the second interface 372, the buffer cavity, the second channel 373 and the first interface 371 are connected in sequence to form the first flow path.

[0108] As an optional technical solution of this application, the battery pack 11 includes a battery cell and a heat exchange plate. The heat exchange plate is configured to cool the battery cell. The heat exchange plate has a first connector and a second connector. The first connector is connected to a second pipe 352, and the second connector is connected to a fourth pipe 354.

[0109] The battery cell can be of different types, such as lithium-ion, lead-carbon, or flow cell. Internally, the cell, through structures such as a positive electrode, negative electrode, electrolyte, and separator, converts electrical energy into chemical energy for storage during charging and releases it by converting chemical energy back into electrical energy during discharging. The cell generates heat during operation, and its performance and lifespan are affected by its operating temperature range. In the battery pack 11, there are multiple cells, which can be connected in series, parallel, or a combination thereof. A combination of series and parallel connections refers to multiple cells being connected together. Multiple cells can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of these cells is housed within a carrier.

[0110] The heat exchange plate is the component that directly exchanges heat with the battery cell. The heat exchange plate can be a plate, flat tube, or jacketed structure made of materials with high thermal conductivity, such as aluminum or copper. The surface of the heat exchange plate is in direct contact with the battery cell, or maintains good thermal contact with the battery cell through thermal interface materials such as thermally conductive silicone grease. The interior of the heat exchange plate has microchannels or flow paths for the flow of a heat-regulating medium. The heat generated by the battery cell during operation is transferred to the heat exchange plate through heat conduction, and the flowing heat-regulating medium then carries away the heat, achieving cooling of the battery cell; alternatively, the heat carried by the heat-regulating medium is transferred to the battery cell through the heat exchange plate, achieving heating of the battery cell.

[0111] In the above technical solution, the second pipe 352 allows the heat regulation medium flowing out of the outlet of the heat regulation unit 31 to flow into the internal channel of the heat exchange plate through the first connector. The heat regulation medium flowing into the heat exchange plate regulates the heat of the battery cell, such as removing the heat generated by the charging and discharging of the battery cell, and then flows out through the second connector. That is, the heat regulation medium after regulating the heat of the battery cell enters the fourth pipe 354 through the second interface 372, and then flows back to the inlet of the heat regulation unit 31, thus entering the heat regulation unit 31. It can be understood that after the heat regulation medium entering the heat regulation unit 31 is internally cooled or heated, it will flow back into the second pipe 352 from the outlet of the heat regulation unit 31, thereby realizing the circulation of the heat regulation medium.

[0112] As an optional technical solution of this application, the energy storage device 100 also includes a housing 50, which has a receiving cavity 51. Multiple battery clusters 10 and thermal regulation units 31 are arranged side by side in the receiving cavity 51 along the first direction X. The first connector, the second connector and the pipeline assembly 35 are located on the same side of the battery clusters 10 in the second direction Y. The first direction X is perpendicular to the second direction Y, and both the first direction X and the second direction Y are perpendicular to the height direction Z of the housing 50.

[0113] In the above technical solution, the first connector, the second connector, and the pipeline assembly 35 are located on the same side of the battery cluster 10 in the second direction Y. This facilitates the docking of the first connector, the second connector, and the pipeline assembly 35 on the heat exchange plate, which is beneficial to improving assembly efficiency. On the other hand, the pipeline assembly 35 is centrally located on one side of the battery cluster 10 in the second direction Y, which not only facilitates the inspection and maintenance of the pipeline assembly 35, but also makes the pipeline layout more orderly, which is beneficial to improving the visual effect of the energy storage device 100.

[0114] Secondly, please refer to Figure 1 and Figure 6This application provides an electrical device 1000. The electrical device 1000 includes a high-voltage cable, a first power conversion device 300, a second power conversion device 400, and an energy storage device 100 according to any embodiment provided in this application. In some embodiments of the power generation scenario, the second power conversion device 400 can be a wind power conversion device. Since the electricity generated by wind power conversion is volatile, random, and intermittent, the unstable electricity output by the wind power conversion device can be stored in the energy storage device 100 through grid connection. The energy storage device 100 is connected to the high-voltage cable 200 and outputs smooth electricity to the power consumption side of the distribution network, achieving peak shaving and frequency regulation, and stable grid operation; or, the wind power conversion device is always connected to the grid. High-voltage cable 200 connects the wind power conversion device to the power consumption side of the distribution network under normal power generation conditions. When the current power load is low and the wind power conversion device generates excess power, the excess power is first stored in energy storage device 100 to reduce wind and solar curtailment rates and improve the problem of new energy power generation consumption. When the power load is high, the power grid issues an instruction to transmit the power stored in energy storage device 100 together with the high-voltage cable in grid-connected mode to supply power to the power consumption side. This provides the power grid with various services such as peak shaving, frequency regulation, and backup, giving full play to the peak shaving role of the power grid, promoting peak shaving and valley filling, and alleviating the power supply pressure of the power grid.

[0115] In some embodiments on the distribution network side, the first power conversion device 300 can be a photovoltaic power conversion device, and the energy storage device 100 is connected to the high-voltage cable and installed downstream of the high-voltage cable between the user load. The power output of the photovoltaic power conversion device is stored in the energy storage device 100, which can respond in a timely manner to act as a backup power source when the power grid / distribution network fails; or, it can provide power supply support to alleviate line blockage when the high-voltage cable transmission line is blocked, and to delay the economic pressure caused by the expansion of the power grid / distribution capacity when the power grid is planned to be expanded.

[0116] Optionally, the first power conversion device 300 may include, but is not limited to, a wind power conversion device, and the second power conversion device 400 may include, but is not limited to, a photovoltaic power conversion device. The first power conversion device 300 and the second power conversion device 400 can convert at least one of solar energy, light energy, wind energy, thermal energy, tidal energy, biomass energy and mechanical energy into electrical energy.

[0117] The electrical equipment 1000 provided in this application embodiment has the same beneficial effects as the aforementioned energy storage device 100, and will not be elaborated further here.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device (100), characterized in that, include: Battery cluster (10), comprising multiple battery packs (11), wherein the battery cluster (10) comprises multiple; and The piping structure (30) includes a thermal control unit (31), a first distributor (33) and a piping assembly (35). The first distributor (33) is provided with an input interface (331) and multiple output interfaces (332). The input interface (331) is connected to the outlet of the thermal control unit (31). The piping assembly (35) includes multiple first pipes (351). The multiple first pipes (351) correspond to multiple battery clusters (10) respectively and to multiple output interfaces (332) respectively. Multiple second pipes (352) are connected to each first pipe (351). The multiple second pipes (352) are connected to multiple battery packs (11) respectively. The input interface (331), the output interface (332), the first pipeline (351) and the second pipeline (352) are connected in sequence to form a first flow path. The first flow path is configured to allow the heat regulation medium pumped out by the heat regulation unit (31) to flow into the battery pack (11) to regulate the temperature of the battery pack (11).

2. The energy storage device (100) according to claim 1, characterized in that, The first distributor (33) is provided with a plurality of first channels (333) arranged at intervals, and the two ends of the first channels (333) are respectively connected to the input interface (331) and the output interface (332); The input interface (331) includes multiple interfaces, and the multiple first channels (333) are respectively connected to the multiple input interfaces (331) and respectively connected to the multiple output interfaces (332); or, The input interface (331) includes one, and the multiple first channels (333) are respectively connected to the multiple output interfaces (332).

3. The energy storage device (100) according to claim 2, characterized in that, The extension directions of the plurality of first channels (333) are arranged parallel to each other; and / or, The flow area of ​​multiple first channels (333) is the same.

4. The energy storage device (100) according to claim 1, characterized in that, Multiple first conduits (351) are arranged in parallel to each other; and / or, Multiple second pipelines (352) are arranged in parallel to each other.

5. The energy storage device (100) according to any one of claims 1-4, characterized in that, The pipeline structure (30) further includes a second distributor (37), which is provided with a first interface (371) and a plurality of second interfaces (372). The first interface (371) is connected to the inlet of the thermal regulating unit (31). The pipeline assembly (35) further includes a plurality of third pipelines (353), which correspond to a plurality of battery clusters (10) and a plurality of second interfaces (372). Each third pipeline (353) is connected to a plurality of fourth pipelines (354), which are connected to a plurality of battery packs (11). The fourth pipe (354), the third pipe (353), the second interface (372) and the first interface (371) are connected in sequence to form a second flow path, which is configured to allow the thermal regulation medium in the battery pack (11) to flow back to the thermal regulation unit (31).

6. The energy storage device (100) according to claim 5, characterized in that, The second distributor (37) and the first distributor (33) are a single unit; or, The second distributor (37) and the first distributor (33) are separate structures.

7. The energy storage device (100) according to claim 5, characterized in that, The second distributor (37) and the first distributor (33) are separate structures, and the second distributor (37) and the first distributor (33) are stacked along the height direction of the energy storage device (100).

8. The energy storage device (100) according to claim 5, characterized in that, The second distributor (37) and the first distributor (33) are an integrated structure (330) formed by one piece. The first interface (371) and the input interface (331) are located on the same side of the integrated structure (330), and the second interface (372) and the output interface (332) are located on the other side of the integrated structure (330).

9. The energy storage device (100) according to claim 5, characterized in that, The second distributor (37) is provided with a plurality of second channels (373) arranged at intervals, and the two ends of the second channels (373) are respectively connected to the second interface (372) and the first interface (371); The first interface (371) includes multiple second channels (373), which are respectively connected to the multiple first interfaces (371) and respectively connected to the multiple second interfaces (372); or, The first interface (371) includes one, and multiple second channels (373) are respectively connected to multiple second interfaces (372).

10. The energy storage device (100) according to claim 5, characterized in that, The battery pack (11) includes a battery cell and a heat exchange plate configured to cool the battery cell. The heat exchange plate has a first connector and a second connector. The first connector is connected to a second conduit (352), and the second connector is connected to a fourth conduit (354).

11. The energy storage device (100) according to claim 10, characterized in that, The energy storage device (100) further includes: The housing (50) has a receiving cavity (51). Multiple battery clusters (10) and the thermal regulation unit (31) are arranged side by side in the receiving cavity (51) along a first direction. The first connector, the second connector and the pipeline assembly (35) are located on the same side of the battery clusters (10) in a second direction. The first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the height direction of the housing (50).

12. An electrical appliance (1000), characterized in that, Includes the energy storage device (100) according to any one of claims 1-11.

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