Energy storage system

Abstract

Disclosed in the present application is an energy storage system. The energy storage system comprises: a box body, a first storage cavity and a second storage cavity being formed in the box body; an electronic control box assembly, which is arranged in the first storage cavity; and a battery module, which is arranged in the second storage cavity and electrically connected to the electronic control box assembly.

Description

Energy storage system

[0001] This application claims priority to Chinese Patent Application No. 202422669747.8, filed on October 31, 2024, entitled "Electrical Control Box Assembly and Energy Storage System Having Therethe", and Chinese Patent Application No. 202422663584.2, filed on October 31, 2024, entitled "Cooling Assembly and Energy Storage Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of energy storage system technology, and more particularly to an energy storage system. Background Technology

[0003] In related technologies, the shell of an immersion liquid-cooled energy storage system has a cavity inside, where battery modules, cable modules, cooling modules, BMS electrical boxes, and communication modules are all located. These structures are prone to interference with each other, affecting the spatial layout, and the heat generated by each component may affect each other. Summary of the Invention

[0004] The purpose of this application is to propose an energy storage system in which the control box assembly is located in the first storage cavity and the battery module is located in the second storage cavity. This can avoid the interference between the control box assembly and the battery module in the spatial layout and also help to avoid the mutual influence of the heat generated by each.

[0005] The energy storage system according to this application includes: a housing, wherein a first storage cavity and a second storage cavity are formed within the housing; an electrical control box assembly disposed in the first storage cavity; and a battery module disposed in the second storage cavity and electrically connected to the electrical control box assembly.

[0006] According to the energy storage system of this application, the control box assembly is located in the first storage cavity and the battery module is located in the second storage cavity. This can avoid the interference between the spatial layout of the control box assembly and the battery module in the box, and also help to avoid the mutual influence of the heat generated by each, thereby improving the operational stability and reliability of the energy storage system.

[0007] In some embodiments, the electrical control box assembly includes: a first housing having a first mounting cavity adapted to mount a first control module; and a second housing movably connected to the first housing, adapted to mount a second control module, the second control module being electrically connected to the first control module.

[0008] According to some embodiments of this application, the first control module is a high-voltage module, and the second control module is a low-voltage module and / or a high-voltage module.

[0009] According to some embodiments of this application, the first control module is configured as a BMS module; the second control module is a low-voltage module and includes a communication module and / or a control module; or the second housing is configured as a PCS control box, wherein the low-voltage module and the high-voltage module are disposed inside the PCS control box.

[0010] According to some embodiments of this application, a second housing is provided on one side of the first housing in the thickness direction, and a mounting position is provided on the other side of the first housing in the thickness direction for connection with other structures.

[0011] According to some embodiments of this application, the first housing is provided with a first mounting port, the first mounting port is in communication with the first mounting cavity, and the second housing is movably disposed on the first housing to selectively cover the first mounting port.

[0012] According to some embodiments of this application, the second housing includes: a box body, wherein a second mounting cavity and a second mounting port communicating with the second mounting cavity are formed in the box body, and the second mounting cavity is adapted to install the second control module; and a cover plate, wherein the cover plate is movably disposed on the box body to selectively cover the second mounting port.

[0013] According to some embodiments of this application, the first housing is provided with a first pivot portion located at the edge of the first mounting port, and the second housing is rotatably connected to the first housing through the first pivot portion.

[0014] According to some embodiments of this application, the box body is provided with a second pivot portion located at the edge of the second mounting opening, and the cover plate is rotatably connected to the box body through the second pivot portion.

[0015] According to some embodiments of this application, the first pivot portion and the second pivot portion are located on the same side of the housing.

[0016] According to some embodiments of this application, the housing is provided with a cable passage that connects the second mounting cavity and the first mounting cavity. The cable passage is located adjacent to the first pivot portion, and an electrical connection cable is used to electrically connect the first control module and the second control module through the cable passage.

[0017] According to some embodiments of this application, the electrical control box assembly further includes: a seal disposed on the outer periphery of the first mounting port and adapted to abut against the second housing; and / or the seal disposed on the outer periphery of the second mounting port and adapted to abut against the cover plate.

[0018] According to some embodiments of this application, an electrical connector is provided inside the first housing. One end of the electrical connector is located in the first mounting cavity and is adapted to be electrically connected to the first control module, and the other end of the electrical connector extends out of the first mounting cavity.

[0019] According to some embodiments of this application, the energy storage system includes: a cover, the cover being disposed on the housing, and a first storage cavity being disposed between the cover and the second storage cavity.

[0020] According to some embodiments of this application, the second storage cavity stores a cooling medium that is adapted to be in direct contact with the battery module.

[0021] According to some embodiments of this application, the second control module is located on the side of the first control module facing the lid.

[0022] According to some embodiments of this application, the energy storage system further includes a cooling component disposed within the cover or the first storage cavity.

[0023] According to some embodiments of this application, an accommodating space suitable for the installation of the cooling assembly is defined between the electrical control box assembly, the box cover, and the battery module, and the cooling assembly contacts the battery module through the accommodating space.

[0024] According to some embodiments of this application, the battery module includes a first battery cell; the battery module further includes a heat dissipation device, including a support structure, the support structure being adapted to support the first battery cell, the support structure being provided with a liquid passage hole, the liquid passage hole being adapted to conduct a cooling medium to dissipate heat from the first battery cell, and the heat dissipation of the first battery cell through the cooling medium is highly efficient.

[0025] In some examples of this application, the support structure includes: a first pipe segment and a second pipe segment, at least two of the second pipe segments being connected to both ends of the first pipe segment respectively, along the extension direction of the first pipe segment, and the at least two second pipe segments being spaced apart.

[0026] In some examples of this application, the second pipe segment is provided with a plurality of liquid outlet holes, which are spaced apart in the extending direction of the second pipe segment.

[0027] In some examples of this application, the flow area of ​​the plurality of liquid outlet holes gradually increases in the direction away from the first pipe segment.

[0028] In some examples of this application, at least two second pipe segments are arranged in parallel, and the plane formed by the at least two second pipe segments and the first pipe segment is adapted to carry the first battery cell.

[0029] In some examples of this application, the heat dissipation device further includes: a first reinforcing beam tube, which extends in a vertical direction, has fluid passage holes inside, and is connected to the first pipe segment.

[0030] In some examples of this application, the heat dissipation device further includes: a liquid inlet pipe assembly, the liquid inlet pipe assembly including: a first liquid inlet pipe, the first liquid inlet pipe being connected to the first pipe segment, and the cooling medium entering the first pipe segment through the first liquid inlet pipe to exchange heat with the first battery cell.

[0031] In some examples of this application, the inlet pipe assembly further includes a second inlet pipe connected between the first reinforcing beam pipe and the first pipe segment.

[0032] In some examples of this application, the first inlet pipe and / or the second inlet pipe are constructed as a flexible tube.

[0033] In some examples of this application, the heat dissipation device further includes: a second reinforcing beam pipe, which is connected to the second pipe segment, and the cooling medium is discharged through the second reinforcing beam pipe.

[0034] In some examples of this application, the second reinforcing beam pipe includes: a first return pipe, a second return pipe and a third return pipe, wherein the first return pipe extends in a vertical direction and the inlet of the first return pipe is disposed opposite to the outlet of at least one of the second pipe segments, and the second return pipe is connected between the first return pipe and the third return pipe.

[0035] In some examples of this application, the first reinforcing beam tube is fixed to the side wall of the box; the first return pipe extends vertically and is fixed to the side wall of the box; the second return pipe is fixed to the bottom wall of the box.

[0036] In some examples of this application, the battery module further includes: a second battery unit, wherein the first battery unit and the second battery unit are stacked together, and the support structure is disposed between the first battery unit and the second battery unit.

[0037] In some examples of this application, the side wall of the housing is provided with a support beam, which is adapted to support the second battery cell.

[0038] In some examples of this application, the side wall of the housing is also provided with a limiting member, which cooperates with the first battery unit or the second battery unit for limiting.

[0039] In some examples of this application, the cooling medium is in contact with the first battery cell and the second battery cell. Attached Figure Description

[0040] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0041] Figure 1 is an internal structural diagram of an energy storage system according to an embodiment of this application;

[0042] Figure 2 is a structural diagram of the electrical control box assembly according to an embodiment of this application;

[0043] Figure 3 is a structural schematic diagram of the second housing being a PCS control box according to an embodiment of this application;

[0044] Figure 4 is a schematic diagram of the structure in Figure 2 where the second housing flips to the left to open the first mounting cavity;

[0045] Figure 5 is a schematic diagram of the structure in Figure 2 where the second shell flips to the right to open the first mounting cavity;

[0046] Figure 6 is a schematic diagram of the structure in Figure 2 where the second housing flips upward to open the first mounting cavity;

[0047] Figure 7 is a schematic diagram of the structure in Figure 2 where the second housing flips downward to open the first mounting cavity;

[0048] Figure 8 is a schematic diagram of the internal structure of the second housing according to an embodiment of this application;

[0049] Figure 9 is a schematic diagram of the internal structure of the first housing according to an embodiment of this application;

[0050] Figure 10 is a first structural schematic diagram of an energy storage system according to an embodiment of this application;

[0051] Figure 11 is a first partial structural schematic diagram of an energy storage system according to an embodiment of this application;

[0052] Figure 12 is a schematic diagram of a second partial structure of an energy storage system according to an embodiment of this application;

[0053] Figure 13 is a schematic diagram of the second pipe section;

[0054] Figure 14 is a schematic diagram of the interlayer liquid flow path of an energy storage system according to an embodiment of this application;

[0055] Figure 15 is a partially enlarged schematic diagram of the interlayer liquid flow path of an energy storage system according to an embodiment of this application;

[0056] Figure 16 is a schematic diagram of liquid flow in the height direction of an energy storage system according to an embodiment of this application;

[0057] Figure 17 is an exploded view of the battery module structure;

[0058] Figure 18 is a schematic diagram of the interlayer flow field of the battery module;

[0059] Figure 19 is a schematic diagram of the flow field in the height direction of an energy storage system according to an embodiment of this application;

[0060] Figure 20 is a contour map of interlayer temperature in battery cells;

[0061] Figure 21 is a schematic diagram of a third partial structure of an energy storage system according to an embodiment of this application;

[0062] Figure 22 is a schematic diagram of a fourth partial structure of an energy storage system according to an embodiment of this application;

[0063] Figure 23 is a second structural schematic diagram of an energy storage system according to an embodiment of this application.

[0064] Reference numerals: 1000, Energy storage system; 1, Electrical control box assembly; 10, First housing; 10a, First mounting cavity; 10b, First mounting port; 11, First control module; 12, First pivot; 13, Electrical connector; 14, Control switch; 15, Incoming cable adapter; 16, Outgoing cable adapter; 20, Second housing; 20a, Second mounting cavity; 20b, Second mounting port; 21, Second control module; 22, Second pivot; 23, Box body; 23a, Cable passage; 24, Cover plate; 24a, Compression groove; 25, Second latch; 26, Third latch; 30, Sealing element; 40, Heat dissipation hole; 2, Box body; 2001, First storage cavity; 2002, Second storage cavity; 3, Cable module; 4, Box cover; 5, Cooling assembly; 100. First reinforcing beam pipe; 101. Second reinforcing beam pipe; 102. First return pipe; 103. Second return pipe; 104. Third return pipe; 105. Support beam; 106. Limiting component; 6. Battery module; 200. First battery unit; 201. Support structure; 202. First pipe section; 203. Second pipe section; 204. Liquid outlet; 205. Second battery unit; 7. Liquid inlet pipe assembly; 71. First liquid inlet pipe; 72. Second liquid inlet pipe; 8. Heat dissipation device.

[0065] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0066] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0067] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0070] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0071] In related technologies, the shell of an immersion liquid-cooled energy storage system forms a cavity, in which structures such as cable modules, cooling modules, BMS electrical boxes, and communication modules are all housed. In some existing technologies, the BMS electrical boxes and communication modules are arranged separately, occupying too much space in the cavity and affecting the arrangement of other structures. Furthermore, placing the BMS electrical boxes and communication modules in the same cavity can have a certain impact on their operation.

[0072] The energy storage system 1000 of this application embodiment includes: a housing 2, an electrical control box assembly 1, and a battery module 6. The housing 2 forms a first storage cavity 2001 and a second storage cavity 2002; the electrical control box assembly 1 is disposed in the first storage cavity 2001. The battery module 6 is disposed in the second storage cavity 2002 and electrically connected to the electrical control box assembly 1. The battery module 6 can directly contact a cooling medium, allowing the cooling medium to exchange heat with the battery module 6, removing the heat generated by the battery module 6 and improving its heat dissipation efficiency.

[0073] According to the energy storage system of this application, the control box assembly 1 is located in the first storage cavity 2001 and the battery module 6 is located in the second storage cavity 2002. This can avoid the interference between the spatial layout of the control box assembly 1 and the battery module 6 in the box 2, and also help to avoid the mutual influence of the heat generated by each, thereby improving the operational stability and reliability of the energy storage system 1000.

[0074] The electrical control box assembly 1 according to an embodiment of this application is described below with reference to Figures 1-9.

[0075] As shown in Figures 1-9, the electrical control box assembly 1 according to this application includes: a first housing 10 and a second housing 20. The first housing 10 forms a first mounting cavity 10a, which is suitable for mounting a first control module 11. The second housing 20 is movably connected to the first housing 10 and is suitable for mounting a second control module 21, which is electrically connected to the first control module 11. Here, the electrical control box assembly 1 designed according to this application can be applied in an energy storage system 1000, which can be a battery cabinet, an energy storage container, or other equipment.

[0076] The energy storage system 1000 includes a cable module 3, and the electrical control box assembly 1 contains multiple control modules, including at least a battery management system (BMS) module. The BMS module is electrically connected to the cable module 3. The multiple control modules may also include a communication module or a process control system (PCS) module, both of which can be electrically connected to the BMS module. The first control module is one part of the multiple control modules, and the second control module is another part of the multiple control modules.

[0077] Furthermore, the second housing 20 is movably connected to the first housing 10. For example, one of the second housing 20 and the first housing 10 can rotate or translate relative to the other, which facilitates maintenance operations on the first control module 11 and the second control module 21. Moreover, the first housing 10 and the second housing 20 connected to each other can integrate multiple control modules into one place, reducing the space occupied by multiple control modules in the energy storage system 1000.

[0078] According to the present application, the electrical control box assembly 1 integrates the first control module 11 and the second control module 21 into one place, which can reduce the space occupied by the first control module 11 and the second control module 21 on the energy storage system 1000, improve the integration of the electrical control box assembly 1, and the first control module 11 and the second control module 21 are set in different housings, which can realize the partitioned arrangement of the first control module 11 and the second control module 21, avoid the first control module 11 and the second control module 21 from affecting each other, and improve the working stability of the electrical control box assembly 1.

[0079] According to some embodiments of this application, the first control module 11 is a high-voltage module, and the second control module 21 is a low-voltage module. Here, the first control module 11 in the first housing 10 can be a high-voltage module (such as a BMS module), and the second control module 21 in the second housing 20 can be either a low-voltage module or a high-voltage module. Multiple modules are arranged in different housings, which can realize the partitioned arrangement of different modules, avoid mutual interference between modules, and improve the working stability of the electrical control box assembly 1.

[0080] According to some embodiments of this application, the first control module 11 is configured as a BMS module. The second control module 21 is a low-voltage module and includes a communication module and / or a control module; or the second housing 20 is configured as a PCS control box, which internally houses a low-voltage module and a high-voltage module. Here, the high-voltage module in the first housing 10 can be a BMS module for electrical connection with the cable module 3. The low-voltage module in the second housing 20 can be a communication module and / or a control module for communication and electrical connection with the BMS module; the second housing 20 can also be a PCS control box, which internally houses a low-voltage module and a high-voltage module for communication and electrical connection with the BMS module, and can be designed according to actual needs.

[0081] According to some embodiments of this application, a second housing 20 is provided on one side of the first housing 10 in the thickness direction, and a mounting position is provided on the other side of the first housing 10 in the thickness direction for connection with other structures. Here, the first housing 10 and the second housing 20 are arranged along the thickness direction, which can realize the partitioned and layered arrangement of the first control module 11 and the second control module 21, improve the integration of the electrical control box assembly 1, reduce the overall volume of the electrical control box assembly 1, and further reduce the overall space occupied by the electrical control box in the energy storage space.

[0082] The second housing 20 is located on one side of the thickness direction of the first housing 10, while the other side of the thickness direction of the first housing 10 can be connected to other structures. In some embodiments, the control box assembly 1 is disposed in the energy storage system 1000. The energy storage system 1000 is provided with a partition. One side of the partition is used to store the battery module 6, and the other side of the partition is used to accommodate the control box assembly 1 and other structures. The control box assembly 1 is connected to the partition through the mounting position on the first housing 10 to achieve fixed installation of the control box assembly 1.

[0083] According to some embodiments of this application, a first housing 10 is provided with a first mounting port 10b, which communicates with a first mounting cavity 10a. A second housing 20 is movably disposed on the first housing 10 to selectively cover the first mounting port 10b. In other words, the second housing 20 can either cover the first mounting port 10b or open it.

[0084] Here, the second housing 20 is movably disposed on the first housing 10 to selectively cover the first mounting port 10b. The second housing 20, on which the second control module 21 is mounted, serves as a cover for the first housing 10, on which the first control module 11 is mounted. This improves the integration of the electrical control box assembly 1, reduces the number of components in the electrical control box assembly 1, and reduces the space occupied by the electrical control box assembly 1 in the stacking direction of the first housing 10 and the second housing 20, thereby further reducing the overall space occupied by the electrical control box in the energy storage space. When the first control module 11 needs maintenance, the second housing 20 is moved to open the first mounting port 10b, thereby exposing the first control module 11. Maintenance and debugging of the first control module 11 can be achieved by moving the second housing 20.

[0085] The electrical control box assembly 1 integrates the first control module 11 and the second control module 21 into one place, which can reduce the space occupied by the first control module 11 and the second control module 21 in the energy storage system 1000. Furthermore, the second housing 20, on which the second control module 21 is installed, acts as a cover for the first housing 10, on which the first control module 11 is installed, which can further improve the integration of the electrical control box assembly 1 and reduce the space occupied by the electrical control box assembly 1 in the stacking direction of the first housing 10 and the second housing 20, thereby further reducing the overall space occupied by the electrical control box in the internal space of the energy storage space.

[0086] According to some embodiments of this application, as shown in FIG8, the second housing 20 includes a box body 23 and a cover plate 24. A second mounting cavity 20a and a second mounting opening 20b communicating with the second mounting cavity 20a are formed in the box body 23. The second mounting cavity 20a is suitable for mounting the second control module 21. The cover plate 24 is movably disposed on the box body 23 to selectively cover the second mounting opening 20b. In other words, the cover plate 24 can cover the second mounting opening 20b or open the second mounting opening 20b.

[0087] Specifically, the cover plate 24 is movably disposed on the housing 23 to selectively cover the second mounting port 20b. When the second control module 21 needs to be maintained, the cover plate 24 is moved to open the second mounting port 20b, thereby exposing the second control module 21. The maintenance and debugging of the second control module 21 can be achieved by moving the cover plate 24. The operation is simple and easy to implement.

[0088] In some embodiments, to ensure the safety of operators, a limit switch is provided on the second housing 20. When the second housing 20 moves and opens the first mounting port 10b, the limit switch provides feedback and shuts off the first control module 11, or when the cover plate 24 moves and opens the second mounting port 20b, the limit switch provides feedback and shuts off the second control module 21.

[0089] In some embodiments, the multiple control modules include a BMS module and a communication module. Compared to the BMS module, the communication module requires more frequent maintenance. Therefore, the communication module is housed in the second housing 20, which is easier to open. Maintenance of the communication module can be performed by simply opening the cover 24. The control switches 14 of the BMS module are located on the outer surface of the first housing 10. When the BMS module needs to be debugged or maintained, it can be maintained or used by adjusting the externally located control switches 14 without opening the first mounting cavity 10a. This facilitates operation, reduces the number of times the second housing 20 is opened and closed, prevents water ingress or damage to the BMS module, and ensures the protective effect of the first housing 10 on the BMS module.

[0090] In some embodiments, a first latch is provided on the first housing 10 and a second latch 25 is provided on the second housing 20. The first latch and the second latch 25 are locked together to lock and fix the first housing 10 and the second housing 20.

[0091] In some embodiments, the surface of the first housing 10 is provided with heat dissipation holes 40 to connect the first mounting cavity 10a with the outside, so as to facilitate heat dissipation of the first control module 11.

[0092] In some embodiments, a water-retaining eave is provided on the top of the heat dissipation hole 40 to prevent external water stains from seeping into the interior of the first housing 10 through the heat dissipation hole 40.

[0093] In some embodiments, a third latch 26 is provided on the box body 23 and a fourth latch is provided on the cover plate 24. The third latch 26 and the fourth latch are locked together to lock and fix the box body 23 and the cover plate 24.

[0094] In some embodiments, the surface of the second housing 20 is provided with heat dissipation holes 40 to connect the second mounting cavity 20a with the outside, so as to facilitate heat dissipation of the second control module 21.

[0095] In some embodiments, a water-retaining eave is provided on the top of the heat dissipation hole 40 to prevent external water stains from seeping into the interior of the second housing 20 through the heat dissipation hole 40.

[0096] According to some embodiments of this application, as shown in FIG3, a first pivot portion 12 is provided on the first housing 10 located at the edge of the first mounting port 10b, and the second housing 20 is rotatably connected to the first housing 10 through the first pivot portion 12. Specifically, the second housing 20 flips to open and close the first mounting port 10b, facilitating the maintenance and debugging of the first control module 11 by the operator. Here, the first pivot 12 can be positioned at any location near the first mounting port 10b as needed. For example, when facing the first mounting port 10b, if the first pivot 12 is located to the left of the first mounting port 10b, as shown in Figure 4, the second housing 20 can be flipped to the left to open the first mounting port 10b; if the first pivot 12 is located to the right of the first mounting port 10b, as shown in Figure 5, the second housing 20 can be flipped to the right to open the first mounting port 10b; if the first pivot 12 is located above the first mounting port 10b, as shown in Figure 6, the second housing 20 can be flipped upwards to open the first mounting port 10b; if the first pivot 12 is located below the first mounting port 10b, as shown in Figure 7, the second housing 20 can be flipped downwards to open the first mounting port 10b. The flipping direction of the second housing 20 can be designed according to the requirements of the electrical control box assembly 1 for the switching direction and maintenance method in actual application, and is not limited to the above four flipping directions.

[0097] Of course, the way in which the first housing 10 and the second housing 20 move and cooperate is not limited to the flip-opening and closing method in the above embodiment. The way in which the first housing 10 and the second housing 20 are installed and combined is also more diverse. For example, if there is insufficient space in the stacking direction of the first housing 10 and the second housing 20, the second housing 20 can be unfolded up and down or left and right to open the first mounting port 10b, or the second housing 20 can be moved horizontally to open the first mounting port 10b. The way in which the first housing 10 and the second housing 20 move and cooperate can be designed according to the specific scenario of the energy storage system 1000, and is not limited here.

[0098] According to some embodiments of this application, the housing 23 is provided with a second pivot portion 22 located at the edge of the second mounting port 20b, and the cover plate 24 is rotatably connected to the housing 23 through the second pivot portion 22. Specifically, the cover plate 24 flips to open and close the second mounting port 20b, facilitating the maintenance and debugging of the second control module 21 by the operator.

[0099] According to some embodiments of this application, as shown in FIG5, the first pivot portion 12 and the second pivot portion 22 are located on the same side of the housing 23. Specifically, the first pivot portion 12 can be set at any position near the first mounting port 10b as needed, and the second pivot portion 22 can be set at any position near the second mounting port 20b as needed. However, for the convenience of operators, the first pivot portion 12 and the second pivot portion 22 are preferably arranged in parallel, and the first pivot portion 12 and the second pivot portion 22 are located on the same side of the housing 23 so that the direction in which the second housing 20 is flipped to open the first mounting port 10b is consistent with the direction in which the flip cover 24 is flipped to open the second mounting port 20b, which is ergonomic.

[0100] Of course, the flipping direction of the second housing 20 and the flipping direction of the cover plate 24 can be designed according to the requirements of the electrical control box assembly 1 for the switching direction and maintenance method in actual application, and are not limited here.

[0101] In some embodiments, the second pivot portion 22 is disposed within the second mounting cavity 20a. In this case, the second pivot portion 22 is hidden inside the second mounting cavity 20a, which avoids the second pivot portion 22 being exposed. This can improve the aesthetics of the second housing 20 and prevent water leakage at the connection gap where the second pivot portion 22 is disposed in the second housing 20, thereby reducing the risk of water leakage.

[0102] According to some embodiments of this application, as shown in FIG9, the housing 23 has a cable passage 23a that connects the second mounting cavity 20a and the first mounting cavity 10a. The cable passage 23a is located near the first pivot part 12, and the electrical connection cable connects the first control module 11 and the second control module 21 through the cable passage 23a. Specifically, the surface of the housing 23 facing the cover plate 24 has a cable passage 23a so that the electrical connection cable connected to the second control module 21 can enter the second mounting cavity 20a and connect to the first control module 11. By setting the cable passage 23a near the first pivot part 12, the length of the electrical connection cable is relatively short, and the connection stability between the electrical connection cable and the first control module 11 and the second control module 21 will not be greatly affected during the process of the second housing 20 flipping to open and close the first mounting port 10b.

[0103] According to some embodiments of this application, the electrical control box assembly 1 further includes a sealing element 30, which is disposed on the outer periphery of the first mounting port 10b and adapted to abut against the second housing 20; and / or the sealing element 30 is disposed on the outer periphery of the second mounting port 20b and adapted to abut against the cover plate 24. When the second housing 20 covers the first mounting port 10b, the second housing 20 and the first housing 10 together compress the sealing element 30. At this time, the sealing element 30 deforms to seal the gap between the second housing 20 and the first housing 10, so as to prevent water from entering or damaging the first control module 11 and ensure the protective effect of the first housing 10 on the first control module 11.

[0104] In some embodiments, a sealing element 30 is also provided on the outer periphery of the second mounting port 20b. When the cover plate 24 covers the second mounting port 20b, the cover plate 24 and the box body 23 together squeeze the sealing element 30. At this time, the sealing element 30 deforms to seal the gap between the cover plate 24 and the box body 23, so as to prevent the second control module 21 from being flooded or damaged, and to ensure the protective effect of the second housing 20 on the second control module 21.

[0105] In some embodiments, the sealing element 30 disposed on the outer periphery of the second mounting port 20b is located inside the second housing 20, and the cover plate 24 is provided with a compression groove 24a. The sealing element 30 is adapted to be housed in the compression groove 24a, which can effectively avoid the influence of external water seepage on the sealing of the second housing 20.

[0106] According to some embodiments of this application, as shown in FIG9, an electrical connector 13 is provided inside the first housing 10. One end of the electrical connector 13 is located in the first mounting cavity 10a and is adapted to be electrically connected to the first control module 11, while the other end of the electrical connector 13 extends outside the first mounting cavity 10a. In some embodiments, the first control module 11 is located inside the first mounting cavity 10a. The first control module 11 is electrically connected to a structure located outside the first mounting cavity 10a and inside the first housing 10 via the electrical connector 13, thereby enabling wiring inside the first housing 10 and isolating the risk of water seepage into the first mounting cavity 10a due to wiring.

[0107] In some embodiments, the electrical connector 13 is constructed as a copper busbar.

[0108] In some embodiments, the first control module 11 includes two BMS modules, which are fixed in the first mounting cavity 10a by an adapter piece.

[0109] In some embodiments, the upper part and the lower part of the first housing 10 are respectively the cable inlet adapter 15 and the cable outlet adapter 16, so that the wiring of the first housing 10 does not need to pass through the first mounting port 10b, thereby avoiding the wiring of the first housing 10 from affecting the sealing and waterproofing of the first housing 10 and ensuring the safety and reliability of the electrical components in the first mounting cavity 10a.

[0110] In some embodiments, the bottom of the second housing 20 has a wire that powers the air conditioner and serves as a signal line interface.

[0111] In some embodiments, the corners of the first housing 10 and the second housing 20 are rounded, so that water on the surface of the first housing 10 and the second housing 20 can flow down along the rounded section in time, preventing water from entering the first housing 10 and the second housing 20, thereby avoiding affecting the first control module 11 and the second control module 21.

[0112] The energy storage system 1000 according to this application is briefly described below.

[0113] The energy storage system 1000 according to this application includes the electrical control box assembly 1 of any one of the above embodiments. Since the energy storage system 1000 according to this application is provided with the electrical control box assembly 1 of the above embodiments, the energy storage system 1000 has a higher degree of integration.

[0114] In addition to the electrical control box assembly 1 in the above embodiments, as shown in FIG10, the energy storage system 1000 includes a box body 2, a battery module 6 and a box cover 4. A first storage cavity 2001 and a second storage cavity 2002 are formed inside the box body 2. The first storage cavity 2001 is used to accommodate the electrical control box assembly 1. The battery module 6 is disposed in the second storage cavity 2002 and is electrically connected to the electrical control box assembly 1. The box cover 4 is disposed on the box body 2, and the first storage cavity 2001 is disposed between the box cover 4 and the second storage cavity 2002. At this time, the battery module 6 is located inside the box body 2, and the electrical control box assembly 1 is located outside the box body 2, which facilitates the maintenance operation of the electrical control box assembly 1.

[0115] According to some embodiments of this application, a cooling medium is stored in the second storage cavity 2002. The cooling medium is suitable for direct contact with the battery module 6. Direct contact here means that heat can be conducted between the cooling medium and the battery module 6. For example, when the cooling medium is located in a container, the container can be in direct contact with the battery module, and heat can be conducted between the cooling medium and the battery module 6 through the container. Alternatively, the battery module 6 can be immersed in the cooling medium. This achieves heat exchange between the cooling medium and the battery module 6, allowing the energy storage system 1000 to operate at a more preferred temperature.

[0116] According to some embodiments of this application, the second control module 21 is located on the side of the first control module 11 facing the cover 4. Here, the first control module 11 can be a BMS module, the second control module 21 can be a communication module or a control module, and the second housing 20 can also be a PCS control box. Compared with the BMS module, the communication module, control module, PCS control box, and other structures require more frequent maintenance. Therefore, the second control module 21 is placed closer to the cover 4 to facilitate the operation of opening the cover 24 to maintain the second control module 21.

[0117] According to some embodiments of this application, the energy storage system 1000 further includes a cooling assembly 5, which is disposed within the cover 4 or the first storage cavity 2001. The cooling assembly 5 can be used to exchange heat with the electrical control box assembly 1 and the battery module 6 in the energy storage system 1000, so that the energy storage system 1000 is at a more preferred operating temperature.

[0118] In some embodiments, the electrical control box assembly 1 and the cooling assembly 5 are arranged alternately, for example, the electrical control box assembly 1 and the cooling assembly 5 may be arranged alternately in the height direction or the horizontal direction.

[0119] According to some embodiments of this application, a suitable accommodating space for the cooling assembly 5 is defined between the control box assembly 1, the cover 4, and the battery module 6, through which the cooling assembly 5 contacts the battery module 6. Here, the cooling assembly 5 and the control box assembly 1 are staggered in the height direction to fully utilize the internal space of the housing 2, improve the space utilization rate of the energy storage system 1000, and facilitate heat exchange between the cooling assembly 5 and the structures in the energy storage system 1000.

[0120] In summary, the electrical control box assembly 1 of this application integrates the first control module 11 and the second control module 21 into one place, which can reduce the space occupied by the first control module 11 and the second control module 21 on the energy storage system 1000, improve the integration of the electrical control box assembly 1, and the first control module 11 and the second control module 21 are set in different housings, which can realize the partitioned arrangement of the first control module 11 and the second control module 21, avoid the first control module 11 and the second control module 21 from affecting each other, and improve the working stability of the electrical control box assembly 1.

[0121] Furthermore, considering that in related technologies, energy storage systems include a housing and battery modules, with the battery modules serving as energy storage units, the housing having a containment cavity, and multiple battery modules typically housed within this cavity, and the housing having ventilation openings for airflow into the housing, the battery modules primarily utilize air cooling for heat dissipation. However, air cooling has relatively low efficiency, resulting in poor heat dissipation for the battery modules.

[0122] As shown in Figures 10-12, 14, and 16, the energy storage system 1000 according to an embodiment of this application further includes: a housing 2 and a battery module 6. The housing 2 is a major component of the energy storage system 1000 and can be used to install components, ensure relative positional accuracy, and protect internal components. The battery module 6 is mainly used for battery cell assembly management, thermal management, safety protection, battery assembly, and connection.

[0123] As shown in Figures 10-12, 14, 17-18, and 20, the battery module 6 includes a first battery unit 200, a second battery unit 205, and a heat dissipation device 8. The heat dissipation device 8 includes a support structure 201 and an inlet pipe assembly 7. The first battery unit 200, the second battery unit 205, and the support structure 201 are all disposed inside the housing 2. The first battery unit 200 is fixed on the support structure 201, and the support structure 201 is adapted to support the first battery unit 200.

[0124] The support structure 201 can be configured as a support frame or a combination of multiple trays. The first battery unit 200 can be directly placed on the support structure 201. The support structure 201 can be configured as a snap-fit ​​structure, allowing the first battery unit 200 to be directly snapped and fixed onto the support structure 201, thus making the placement of the first battery unit 200 more convenient and stable. The liquid inlet pipe assembly 7 mainly guides the cooling medium into the housing 2, ensuring that all battery modules 6 are completely immersed in the cooling medium, thereby facilitating heat exchange with the battery modules 6. The first battery unit 200 and the second battery unit 205 can be batteries or modular structures composed of multiple battery cells.

[0125] Specifically, the first battery unit 200 and the support structure 201 are both located inside the housing 2. This allows for efficient use of the space in the housing 2, reducing space occupancy and thus solving the space arrangement problem of the energy storage system 1000. The first battery unit 200 and the second battery unit 205 are the core components inside the battery module 6, which can store electrical energy. The support structure 201 mainly serves a supporting function. The first battery unit 200 is fixed to the support structure 201, which facilitates the installation of the first battery unit 200 on the support structure 201 and makes the installation of the first battery unit 200 more secure and reliable, thus facilitating the installation and setup of the battery module 6.

[0126] The support structure 201 is provided with a liquid passage hole, which is suitable for conducting cooling medium to dissipate heat from the first battery unit 200 and the second battery unit 205. The liquid inlet pipe assembly 7 includes a first liquid inlet pipe 71, which is connected to the support structure 201. The cooling medium enters the support structure 201 through the first liquid inlet pipe 71 to exchange heat with the first battery unit 200 and the second battery unit 205.

[0127] Specifically, the first liquid inlet pipe 71 is a major component of the liquid inlet pipe assembly 7. The first liquid inlet pipe 71 can mainly guide the cooling medium into the housing 2. The first liquid inlet pipe 71 is connected to the support structure 201, so that the cooling medium can enter the liquid passage of the support structure 201 through the first liquid inlet pipe 71 and exchange heat with the first battery unit 200 and the second battery unit 205.

[0128] It should be noted that the interior of the housing 2 is a closed cavity used to fill the cooling medium. There are two openings at the bottom for connecting to the external liquid inlet and return. The support structure 201 itself is the bottom beam for fixing the first battery unit 200. It is connected to the support structure 201 through the first liquid inlet pipe 71. The support structure 201 is filled with cooling medium to cool the end face of the first battery unit 200. This eliminates the need for conventional serpentine pipes and other liquid cooling pipelines, realizing the effective utilization of the interlayer space of the first battery unit 200 and improving the energy density. The first battery unit 200 and the support structure 201 can be connected by bolts, which makes installation convenient, easy to disassemble, practical, and structurally reliable.

[0129] Therefore, the support structure 201 can serve as both an installation reinforcement structure in the battery module 6 and part of the liquid inlet pipe. As a common structure, the support structure 201 can simplify the overall structure of the energy storage system 1000, enable more precise control of the cooling medium flow direction, and reduce the cluttered internal piping layout. In addition, the battery module 6 can be completely immersed in the cooling medium within the energy storage system 1000, which reduces the risk of pressure on the outer casing when the battery module 6 is immersed in cooling, thus improving economic efficiency.

[0130] Specifically, as shown in Figures 12 and 17, the support structure 201 includes: a first pipe section 202 and a second pipe section 203. The first liquid inlet pipe 71 is connected to the first pipe section 202. At least two second pipe sections 203 are respectively connected to the two ends of the first pipe section 202. When there are two second pipe sections 203, the first pipe section 202 and the second pipe section 203 form a U-shaped structure. The first pipe segment 202 and the second pipe segment 203 are components of the support structure 201, both of which can control the flow direction of the cooling medium. The first liquid inlet pipe 71 is connected to the first pipe segment 202, so that the cooling medium can enter the first pipe segment 202 through the first liquid inlet pipe 71 and the first pipe 202 to exchange heat with the first battery unit 200 and the second battery unit 205. At least two second pipe segments 203 are respectively connected to the two ends of the first pipe segment 202. At this time, the first pipe segment 202 and the second pipe segment 203 form a whole, which facilitates the installation and setting of the support structure 201. When there are two second pipe segments 203, the first pipe segment 202 and the second pipe segment 203 form a U-shaped structure, which facilitates the overall setting of the support structure 201 and is compatible with the structure of the first battery unit 200. Moreover, this can maximize the arrangement range of the support structure 201, thereby increasing the flow path of the cooling medium and improving the heat exchange effect.

[0131] As shown in Figures 12 and 17, at least two second pipe segments 203 are arranged in parallel, and the plane formed by the at least two second pipe segments 203 and the first pipe segment 202 is suitable for supporting the first battery unit 200. That is, the first pipe segment 202 and the at least two second pipe segments 203 can form a common plane, which can fix the first battery unit 200, thereby supporting the first battery unit 200. Thus, the support structure 201 can serve as both an installation reinforcement structure in the battery module 6 and part of the liquid inlet pipe. As a shared structure, the support structure 201 can simplify the overall structure of the energy storage system 1000, enable more precise control of the cooling medium flow direction, and reduce the cluttered internal piping layout.

[0132] As shown in Figures 12 and 13, the second pipe section 203 is provided with multiple liquid outlet holes 204, which are spaced apart along the extension direction of the second pipe section 203. With multiple liquid outlet holes 204, the cooling medium can be sprayed outwards through these holes onto the surfaces of the first battery unit 200 and the second battery unit 205. This allows the cooling medium to directly contact the first battery unit 200 and the second battery unit 205, effectively and uniformly cooling them. The spaced arrangement of the multiple liquid outlet holes 204 avoids interference between them and allows for a wider distribution range, further improving the uniform cooling effect on the first battery unit 200 and the second battery unit 205. For example, the outlet hole 204 can be located at approximately 1 / 10, 2 / 10, 3 / 10, 4 / 10, 6 / 10, 7 / 10, 8 / 10, or 9 / 10 of the total length of the first battery unit 200 or the second battery unit 205.

[0133] It should be noted that, as shown in Figures 19, 21, and 22, the cooling medium can be sprayed outward through the outlet holes 204 in several ways besides direct injection, such as: oblique injection, where the opening and closing position of the outlet holes 204 and the direct injection flow rate are controlled based on oblique injection; all of these opening methods can form an S-shaped turbulent region, improving heat dissipation efficiency; controlling one side for direct injection and the other for oblique injection, alternating between direct and oblique injection; and staggered injection, where the flow rate of the outlet holes 204 is controlled based on staggered injection, forming a circulation around each outlet hole 204. In the circulating region, two liquid outlet holes 204 are added from front to back on the basis of direct injection. These opening methods all increase the turbulence of the internal cooling medium and reduce the generation of circulation dead zones. The design of two sets of flow channels, one long and one short, can realize the heat dissipation turbulence of the first battery unit 200 and the second battery unit 205 for specific structural purposes. On the basis of direct injection, the injection direction of the flow channels on both sides can be adjusted to form clockwise circulating injection or all-round injection. This injection method can create a certain degree of turbulence between the upper and lower first battery unit 200 and the second battery unit 205, thereby improving heat dissipation efficiency.

[0134] Furthermore, as shown in Figures 12 and 13, the flow area of ​​the multiple liquid outlet holes 204 gradually increases in the direction away from the first pipe section 202. When the cooling medium flows from front to back in the second pipe section 203, the flow velocity decreases towards the back, and the flow area of ​​the liquid outlet holes 204 gradually increases, which can increase the fluid area. This special size of the liquid outlet holes 204 can offset the change in flow velocity, so that the flow rate of the cooling medium is basically consistent along the length of the second pipe section 203, thus achieving temperature uniformity control along the length of the second pipe section 203.

[0135] For example, when there are eight liquid outlet holes 204, the flow area of ​​the eight liquid outlet holes 204 gradually increases in the direction away from the first pipe section 202. Alternatively, the flow area of ​​the first four liquid outlet holes 204 is the same, and the flow area of ​​the last four liquid outlet holes 204 is the same, with the flow area of ​​the last four liquid outlet holes 204 being greater than that of the first four liquid outlet holes 204. Of course, the flow area of ​​multiple liquid outlet holes 204 can also be set in other reasonable ways.

[0136] Of course, as shown in Figures 12, 14, and 23, the energy storage system 1000 also includes: a first reinforcing beam pipe 100, which is fixed to the side wall of the housing 2. The first reinforcing beam pipe 100 has a liquid passage hole inside and is connected between the first liquid inlet pipe 71 and the first pipe section 202. By fixing the first reinforcing beam pipe 100 to the side wall of the housing 2, the first reinforcing beam pipe 100 mainly serves to reinforce the side wall of the housing 2. The first reinforcing beam pipe 100 has a liquid passage hole inside and is connected between the first liquid inlet pipe 71 and the first pipe section 202. At this time, the first reinforcing pipe 100 can serve as a channel for the flow of cooling medium. The cooling medium can enter the first reinforcing beam pipe 100 through the first liquid inlet pipe 71 and then enter the first pipe section 202 through the first reinforcing beam pipe 100. This allows the first reinforcing beam pipe 100 to serve two purposes and avoids additional pipe connections. The first reinforcing beam tube 100 and the side wall of the box body 2 can be welded together using a special welding machine. This ensures that the weld is smooth, the dimensions are accurate, the structure is simple and elegant, and the connection between the first reinforcing beam tube 100 and the box body 2 is firm and reliable. The material of the first reinforcing beam tube 100 can be standard hollow steel.

[0137] Furthermore, as shown in Figures 12, 14, and 23, the first reinforcing beam pipe 100 extends vertically. In the first reinforcing beam pipe 100, the cooling medium flows from bottom to top, resulting in lower pressure of the cooling medium as it rises. Simultaneously, since the entire inner cavity of the first reinforcing beam pipe 100 is immersed in the cooling medium, and the cooling medium at the bottom of the pipe is subjected to external hydrostatic pressure, the external pressure of the first reinforcing beam pipe 100 decreases further upwards. Thus, the pressure difference between the inside and outside of the first reinforcing beam pipe 100 remains relatively stable in the vertical direction. Under this pressure difference condition, the flow rate of the cooling medium exiting the first reinforcing beam pipe 100 remains essentially consistent in the vertical direction, achieving uniform temperature control in the vertical direction.

[0138] In addition, as shown in Figures 12 and 14, the liquid inlet pipe assembly 7 also includes a second liquid inlet pipe 72, which connects the first reinforcing beam pipe 100 and the support structure 201. The second liquid inlet pipe 72 is a component of the liquid inlet pipe assembly 7 and mainly serves to guide the flow of the cooling medium. The second liquid inlet pipe 72 connects the first reinforcing beam pipe 100 and the support structure 201, thus allowing the cooling medium to flow from the first reinforcing beam pipe 100 into the support structure 201.

[0139] It should be noted that, as shown in Figures 12 and 14, the first inlet pipe 71 and / or the second inlet pipe 72 are constructed as flexible hoses. Flexible hoses offer good flexibility, corrosion resistance, sealing, and heat insulation. The flexible hose construction of the first inlet pipe 71 and / or the second inlet pipe 72 makes their structure more suitable for actual working conditions.

[0140] In addition, as shown in Figures 12, 17, and 23, the energy storage system 1000 also includes a second reinforcing beam pipe 101, which is connected to the second pipe section 203. The cooling medium is discharged through the second reinforcing beam pipe 101. The second reinforcing beam pipe 101 mainly strengthens the side walls and bottom walls of the housing 2. Since it is connected to the second pipe section 203, the second reinforcing beam pipe 101 can serve as a channel for the flow of the cooling medium, achieving dual functionality and avoiding additional pipe connections. Furthermore, the connection between the second reinforcing beam pipe 101 and the second pipe section 203 allows the cooling medium at corner positions to flow towards the second reinforcing pipe 101, thereby reducing dead zones.

[0141] Optionally, as shown in Figure 12, the second reinforcing beam pipe 101 includes: a first return pipe 102, a second return pipe 103, and a third return pipe 104. The first return pipe 102 extends in the vertical direction and is fixed to the side wall of the housing 2. The inlet of the first return pipe 102 is opposite to the outlet of at least one of the second pipe sections 203. The second return pipe 103 is fixed to the bottom wall of the housing 2 and is connected between the first return pipe 102 and the third return pipe 104.

[0142] It should be noted that the first return pipe 102, the second return pipe 103, and the third return pipe 104 can all control the flow direction of the cooling medium. The first return pipe 102 is fixed to the side wall of the housing 2 in the vertical direction, which can strengthen the side wall of the housing 2. The inlet of the first return pipe 102 is opposite to the outlet of at least one of the second pipe sections 203. At this time, the cooling medium flows from at least one of the second pipe sections 203 into the first return pipe 102, thereby realizing the circulation of the cooling medium inside the housing 2. The second return pipe 103 is fixed to the bottom wall of the housing 2, which can strengthen the bottom wall of the housing 2. Moreover, the second return pipe 103 is connected between the first return pipe 102 and the third return pipe 104. At this time, the first return pipe 102, the second return pipe 103, and the third return pipe 104 form a whole, which facilitates the installation and setting of the second reinforcing beam pipe 101.

[0143] The first reinforcing beam pipe 100 and the side wall of the box body 2, and the second return pipe 103 and the bottom wall of the box body 2 can be welded using a special welding machine. This ensures that the weld is smooth, the dimensions are accurate, the structure is simple and elegant, and the connection between the first reinforcing beam pipe 100, the second return pipe 103 and the box body 2 is firm and reliable. The first return pipe 102, the second return pipe 103 and the third return pipe 104 can all be made of standard hollow steel. The number of first return pipes 102 can be set to two, corresponding to two second return pipes 103 respectively. The second return pipes 103 converge into one at the bottom wall of the box body 2.

[0144] Furthermore, as shown in Figure 22, the first battery unit 200 and the second battery unit 205 are stacked, and the support structure 201 is disposed between the first battery unit 200 and the second battery unit 205. It is understandable that the stacked arrangement of the first battery unit 200 and the second battery unit 205 facilitates installation and reduces the overall volume of the energy storage system 1000. Distributing the support structure 201 between the first battery unit 200 and the second battery unit 205 allows the support structure 201 to provide better support between them, thus better fulfilling its load-bearing function. Moreover, the support structure 201 can cool and dissipate heat from the first battery unit 200 and the second battery unit 205, thereby improving the heat dissipation effect of the battery.

[0145] According to an optional embodiment of this application, as shown in FIG22, a support beam 105 is provided on the side wall of the housing 2, and the support beam 105 is adapted to support the second battery unit 205. The support beam can play a supporting role, and the support beam 105 can support the second battery unit 205, thereby making the second battery unit 205 more stable and reliable.

[0146] Optionally, as shown in Figure 22, a limiting member 106 is also provided on the side wall of the housing 2. The limiting member 106 engages with the first battery unit 200 or the second battery unit 205 for limiting. The limiting member 106 mainly serves to limit movement. By engaging with the first battery unit 200 or the second battery unit 205, the limiting member 106 restricts the movement of the first battery unit 200 or the second battery unit 205, preventing displacement and thus making the installation of the first battery unit 200 or the second battery unit 205 more stable and reliable.

[0147] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.

[0148] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended 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. Such 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.

Claims

1. An energy storage system (1000), characterized in that, include: A housing (2) is provided, wherein a first storage cavity (2001) and a second storage cavity (2002) are formed within the housing (2); An electrical control box assembly (1) is disposed in the first storage cavity (2001); The battery module (6) is disposed in the second storage cavity (2002) and electrically connected to the electrical control box assembly (1).

2. The energy storage system (1000) according to claim 1, characterized in that, The electrical control box assembly (1) includes: A first housing (10) has a first mounting cavity (10a) and the first mounting cavity (10a) is adapted to install a first control module (11); A second housing (20) is movably connected to the first housing (10). The second housing (20) is adapted to install a second control module (21), which is electrically connected to the first control module (11).

3. The energy storage system (1000) according to claim 2, characterized in that, The first control module (11) is a high-voltage module, and the second control module (21) is a low-voltage module and / or a high-voltage module.

4. The energy storage system (1000) according to claim 3, characterized in that, The first control module (11) is constructed as a BMS module; The second control module (21) is a low-voltage module and includes a communication module and / or a control module; or The second housing (20) is constructed as a PCS control box, and the low-voltage module and the high-voltage module are installed inside the PCS control box.

5. The energy storage system (1000) according to claim 2, characterized in that, The second housing (20) is provided on one side of the first housing (10) in the thickness direction, and the mounting position is provided on the other side of the first housing (10) in the thickness direction for connection with other structures.

6. The energy storage system (1000) according to claim 2, characterized in that, The first housing (10) is provided with a first mounting port (10b), which communicates with the first mounting cavity (10a). The second housing (20) is movably disposed on the first housing (10) to selectively cover the first mounting port (10b).

7. The energy storage system (1000) according to claim 6, characterized in that, The second housing (20) includes: The box (23) has a second mounting cavity (20a) and a second mounting port (20b) communicating with the second mounting cavity (20a). The second mounting cavity (20a) is suitable for mounting the second control module (21). A cover plate (24) is movably disposed on the housing (23) to optionally cover the second mounting port (20b).

8. The energy storage system (1000) according to claim 7, characterized in that, The first housing (10) is provided with a first pivot part (12) located at the edge of the first mounting port, and the second housing (20) is rotatably connected to the first housing (10) through the first pivot part (12).

9. The energy storage system (1000) according to claim 8, characterized in that, The box body (23) is provided with a second pivot part (22) located at the edge of the second mounting port, and the cover plate (24) is rotatably connected to the box body (23) through the second pivot part (22).

10. The energy storage system (1000) according to claim 9, characterized in that, The first pivot (12) and the second pivot (22) are located on the same side of the housing (23).

11. The energy storage system (1000) according to claim 8, characterized in that, The housing (23) has a cable passage (23a) that connects the second mounting cavity (20a) and the first mounting cavity (10a). The cable passage (23a) is located near the first pivot part (12). The electrical connection cable connects the first control module (11) and the second control module (21) through the cable passage (23a).

12. The energy storage system (1000) according to claim 7, characterized in that, Also includes: A sealing element (30) is disposed on the outer periphery of the first mounting port and adapted to abut against the second housing (20); and / or the sealing element (30) is disposed on the outer periphery of the second mounting port and adapted to abut against the cover plate (24).

13. The energy storage system (1000) according to claim 2, characterized in that, An electrical connector (13) is provided inside the first housing (10). One end of the electrical connector (13) is located in the first mounting cavity (10a) and is adapted to be electrically connected to the first control module (11). The other end of the electrical connector (13) extends to the outside of the first mounting cavity (10a).

14. The energy storage system (1000) according to claim 2, characterized in that, Also includes: A box cover (4) is disposed on the box body (2), and the first storage cavity (2001) is disposed between the box cover (4) and the second storage cavity (2002).

15. The energy storage system (1000) according to claim 1, characterized in that, The second storage cavity (2002) stores a cooling medium that is adapted to be in direct contact with the battery module (6).

16. The energy storage system (1000) according to claim 14, characterized in that, The second control module (21) is located on the side of the first control module (11) facing the box cover (4).

17. The energy storage system (1000) according to claim 14, characterized in that, Also includes: Cooling assembly (5) is disposed in the cover (4) or the first storage cavity.

18. The energy storage system (1000) according to claim 17, characterized in that, The electrical control box assembly (1), the box cover (4), and the battery module (6) define an accommodating space suitable for the installation of the cooling assembly (5), and the cooling assembly (5) contacts the battery module (6) through the accommodating space.

19. The energy storage system (1000) according to claim 1, characterized in that, The battery module (6) includes a first battery cell (200); The battery module (6) further includes: a heat dissipation device (8), the heat dissipation device (8) comprising: A support structure (201) is provided, which is adapted to support a first battery cell (200). The support structure (201) is provided with a liquid passage hole, which is adapted to conduct a cooling medium to dissipate heat from the first battery cell (200).

20. The energy storage system (1000) according to claim 19, characterized in that, The support structure (201) includes: A first pipe segment (202) and a second pipe segment (203), at least two of the second pipe segments (203) are respectively connected to both ends of the first pipe segment (202), and are spaced apart along the extension direction of the first pipe segment (202).

21. The energy storage system (1000) according to claim 20, characterized in that, The second pipe section (203) is provided with a plurality of liquid outlet holes (204), and the plurality of liquid outlet holes (204) are spaced apart in the extending direction of the second pipe section (203).

22. The energy storage system (1000) according to claim 21, characterized in that, In the direction away from the first pipe section (202), the flow area of ​​the plurality of liquid outlet holes (204) gradually increases.

23. The energy storage system (1000) according to claim 21, characterized in that, At least two second pipe segments (203) are arranged in parallel, and the plane formed by the at least two second pipe segments (203) and the first pipe segment (202) is adapted to carry the first battery cell (200).

24. The energy storage system (1000) according to claim 23, characterized in that, The heat dissipation device (8) also includes: The first reinforcing beam tube (100) extends in the vertical direction, and the first reinforcing beam tube (100) is provided with a liquid passage hole inside, and the first reinforcing beam tube (100) is connected to the first pipe section (202).

25. The energy storage system (1000) according to claim 24, characterized in that, The heat dissipation device (8) also includes: The liquid inlet pipe assembly (7) includes: a first liquid inlet pipe (71), which is connected to the first pipe section (202). Cooling medium enters the first pipe section (202) through the first liquid inlet pipe (71) to exchange heat with the first battery unit (200).

26. The energy storage system (1000) according to claim 25, characterized in that, The inlet pipe assembly (7) also includes: The second inlet pipe (72) is connected between the first reinforcing beam pipe (100) and the first pipe section (202).

27. The energy storage system (1000) according to claim 26, characterized in that, The first inlet pipe (71) and / or the second inlet pipe (72) are constructed as hoses.

28. The energy storage system (1000) according to claim 24, characterized in that, The heat dissipation device (8) also includes: The second reinforcing beam pipe (101) is connected to the second pipe section (203), and the cooling medium is discharged through the second reinforcing beam pipe (101).

29. The energy storage system (1000) according to claim 28, characterized in that, The second reinforcing beam tube (101) includes: The system comprises a first return pipe (102), a second return pipe (103), and a third return pipe (104). The first return pipe (102) extends vertically, and the inlet of the first return pipe (102) is positioned opposite to the outlet of at least one second pipe segment (203). The second return pipe (103) is connected between the first return pipe (102) and the third return pipe (104).

30. The energy storage system (1000) according to claim 29, characterized in that, The first reinforcing beam tube (100) is fixed to the side wall of the box body (2); The first return pipe (102) extends in the vertical direction and is fixed to the side wall of the box (2); The second return pipe (103) is fixed to the bottom wall of the box (2).

31. The energy storage system (1000) according to claim 29, characterized in that, The battery module (6) further includes a second battery unit (205), wherein the first battery unit (200) and the second battery unit (205) are stacked together, and the support structure (201) is disposed between the first battery unit (200) and the second battery unit (205).

32. The energy storage system (1000) according to claim 31, characterized in that, The side wall of the housing (2) is provided with a support beam (105), which is adapted to support the second battery unit (205).

33. The energy storage system (1000) according to claim 31, characterized in that, The side wall of the housing (2) is also provided with a limiting member (106), which is in a limiting cooperation with the first battery unit (200) or the second battery unit (205).

34. The energy storage system (1000) according to claim 31, characterized in that, The cooling medium is in contact with the first battery cell (200) and the second battery cell (205).

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