Energy storage electrical cabinet and energy storage system

Abstract

The invention relates to the technical field of energy storage, in particular to an energy storage electrical cabinet and an energy storage system. In the embodiment of the invention, the alternating current protection module, the direct current protection module and the electric energy conversion module are arranged by utilizing the space of the first cavity and combining the heat value, so that the overall structure is more compact, the size design of the liquid cooling unit is facilitated, and the energy density is improved; and the reliability of devices in the first cavity can be improved while heat dissipation is facilitated, so that the reliability of the overall structure can be improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to energy storage electrical cabinets and energy storage systems. Background Technology

[0002] As the energy density of batteries in energy storage systems increases, the size of liquid cooling units also increases to improve heat dissipation, which means that the energy density and reliability of energy storage systems need to be further improved. Summary of the Invention

[0003] Therefore, it is necessary to provide an energy storage electrical cabinet and energy storage system to improve the energy density and reliability of the energy storage system.

[0004] According to one aspect of this application, an embodiment provides an energy storage electrical cabinet, including a cabinet body, a power conversion module, an AC protection module, and a DC protection module. The cabinet body has a first chamber and a first opening and a second opening, both connected to the first chamber. The power conversion module is disposed within the first chamber. The AC protection module and the DC protection module are disposed within the first chamber. The DC protection module includes a first DC protection submodule and a second DC protection submodule. The AC protection module and the second DC protection submodule are both positioned close to the first opening, and the power conversion module is positioned close to the second opening. The first DC protection submodule is disposed between the AC protection module, the second DC protection submodule, and the power conversion module.

[0005] In some embodiments, the cabinet has a first side and a second side disposed opposite to each other along a first direction, with a first opening located on the first side and a second opening located on the second side.

[0006] In some embodiments, the DC protection module includes a first DC protection submodule and a second DC protection submodule; the second DC protection submodule and the AC protection module are located on a first side, and the power conversion module is located on a second side; along a first direction, the first DC protection submodule is located between the second DC protection submodule and the AC protection module and the power conversion module.

[0007] In some embodiments, the energy storage electrical cabinet has a first mode; in the first mode, a first opening is used for air intake and a second opening is used for air exhaust.

[0008] In some embodiments, the energy storage electrical cabinet further includes a mounting component disposed in the first chamber; the mounting component is detachably connected to the cabinet body, and the first DC protection submodule is mounted on the mounting component.

[0009] In some embodiments, the first DC protection submodule includes a first DC fuse module and a first DC surge module; the first DC fuse module and the first DC surge module are staggered along the direction from the top side of the mounting component to the bottom side of the mounting component; the first DC fuse module and the first DC surge module are staggered along the second direction; the arrangement direction of the second DC protection submodule and the AC protection module and the power conversion module, the second direction and the direction from the top side of the mounting component to the bottom side of the mounting component intersect each other.

[0010] In some embodiments, along the direction from the top side of the mounting member to the bottom side of the mounting member, the first DC fuse module and the first DC surge module are spaced apart, and the first DC surge module is located on the bottom side of the first DC fuse module; and / or, along a second direction, the first DC fuse module and the first DC surge module are spaced apart, the first DC surge module is located on one side of the operating side of the first DC fuse module, and the operating side of the first DC surge module is disposed away from the first DC fuse module.

[0011] In some embodiments, the energy storage electrical cabinet further includes a latching member disposed in the first chamber, the latching member being disposed on one side of the mounting member along the second direction, the latching member engaging with the mounting member; the arrangement directions of the second DC protection submodule and the AC protection module and the power conversion module, the second direction and the direction from the top side of the mounting member to the bottom side of the mounting member intersect each other.

[0012] In some embodiments, the cabinet has a third side and a fourth side disposed opposite to each other along a second direction; the fastener has a first end near the third side and a second end near the fourth side; the first end is connected to the cabinet, the second end is located on the top side of the first end, the second end is warped away from the first end, and the second end is engaged with the mounting element.

[0013] In some embodiments, the fastener includes a first extension, a connecting section, and a second extension; the first extension extends along a second direction and connects to the cabinet, one end of the first extension along the second direction is a first end portion, and the other end of the first extension along the second direction is connected to the connecting section; the connecting section extends in a direction away from the top side of the first extension, and the second extension is connected to the end of the connecting section away from the first extension, the end of the second extension away from the connecting section is a second end portion.

[0014] In some embodiments, the second extension includes a main body portion connected to the connecting section and a second end portion connected to the main body portion; the main body portion extends along a preset direction from the third side to the fourth side; the preset direction is angled to the second direction; the end of the main body portion closer to the fourth side is closer to the first extension portion than the end of the main body portion closer to the third side; and / or, the connecting section extends along the direction from the top side of the mounting member to the bottom side of the mounting member; and / or, the fastener further includes a first arc transition section, the connecting section and the first extension portion are connected through the first arc transition section; and / or, the fastener further includes a second arc transition section, the connecting section and the second extension portion are connected through the second arc transition section; and / or, the fastener is an integrally formed part.

[0015] In some embodiments, the mounting component includes a base, a first mounting portion, a bending portion, and a second mounting portion; the first mounting portion is located on the bottom side of the base, the bending portion is located on the top side of the base, the first mounting portion and the bending portion are both located on the same side of the base along the second direction, and the second mounting portion is located on the side of the bending portion away from the base and away from the first mounting portion; a portion of the first DC protection submodule is located in the first mounting portion, and another portion of the first DC protection submodule is located in the second mounting portion; the arrangement direction of the second DC protection submodule and the AC protection module and the power conversion module, the second direction, and the direction from the top side of the mounting component to the bottom side of the mounting component intersect each other.

[0016] In some embodiments, the energy storage electrical cabinet further includes a first grounding component; the first grounding component is disposed on the first mounting portion, and both the AC protection module and the DC protection module are connected to the first grounding component, and the bent portion is provided with a clearance hole disposed opposite to the first grounding component.

[0017] In some embodiments, the mounting component is a one-piece molded component; and / or, at least one of the four components—the base, the first mounting portion, the bending portion, and the second mounting portion—is provided with weight-reducing holes; and / or, the mounting component further includes a plurality of reinforcing portions, a portion of which is connected between the bending portion and the first mounting portion, and another portion of which is connected between the bending portion and the second mounting portion; and / or, at least one of the base and the first mounting portion is detachably connected to the cabinet.

[0018] In some embodiments, the cabinet further includes a second chamber, and a third opening and a fourth opening, both communicating with the second chamber; the second chamber is located at the bottom of the first chamber; the energy storage electrical cabinet further includes a conductive component disposed in the second chamber and a connector assembly disposed on the conductive component, one end of the conductive component is used to connect to the energy storage converter, the other end of the conductive component is used to connect to the high voltage box of the battery cluster, and the connector assembly is connected to the DC protection module.

[0019] In some embodiments, the cabinet includes a partition disposed in the second chamber, the partition dividing the second chamber into a first sub-cavity and a second sub-cavity, both the first sub-cavity and the second sub-cavity being connected to a third opening and both being connected to a fourth opening; conductive components and connector components are disposed in the first sub-cavity, and the energy storage electrical cabinet also includes an auxiliary connection module disposed in the second sub-cavity.

[0020] In some embodiments, the auxiliary connection module includes a power distribution component for assisting in the formation of a single-phase power supply circuit; and / or, the auxiliary connection module includes a second grounding component configured as a grounding output component of the energy storage electrical cabinet; and / or, the auxiliary connection module includes a conductive connector for connecting the power conversion module and the liquid cooling unit.

[0021] In some embodiments, the cabinet further includes a third chamber located on the top side of the first chamber; the energy storage electrical cabinet also includes a monitoring signal storage device, a signal conversion and interconnection module, and a communication conversion module, all disposed in the third chamber; the monitoring signal storage device is disposed on the bottom wall of the third chamber, and the signal conversion and interconnection module and the communication conversion module are respectively disposed on opposite sides of the monitoring signal storage device.

[0022] In some embodiments, the cabinet further includes a fourth chamber, and a fifth opening and a sixth opening, both connected to the fourth chamber; the fourth chamber is located on the top side of the third chamber, and the energy storage electrical cabinet further includes a power distribution protection module disposed in the fourth chamber, one end of the power distribution protection module being connected to the power conversion module, and the other end of the power distribution protection module being connected to the AC protection module.

[0023] According to another aspect of this application, embodiments of this application provide an energy storage system, including a housing and an energy storage electrical cabinet as described in any of the above embodiments. The housing has a first receiving cavity. The energy storage electrical cabinet is disposed within the first receiving cavity. The cavity wall of the first receiving cavity and the outer wall of the energy storage electrical cabinet define a first channel and a second channel, the first channel communicating with a first opening and the second channel communicating with a second opening.

[0024] In some embodiments, the first channel is configured as an air inlet channel and the second channel is configured as a return air channel.

[0025] In some embodiments, the housing further has a second receiving cavity arranged side by side with the first receiving cavity, and the energy storage system further includes a liquid-cooled unit disposed in the second receiving cavity.

[0026] In some embodiments, the enclosure further has a third receiving cavity, and the energy storage system further includes at least one battery cluster disposed in the third receiving cavity and at least one energy storage converter disposed outside the enclosure; the at least one battery cluster and the at least one energy storage converter are connected through an energy storage electrical cabinet.

[0027] In some embodiments, the at least one battery cluster includes a plurality of battery clusters, and the at least one energy storage converter includes a plurality of energy storage converters; the plurality of battery clusters and the plurality of energy storage converters are arranged in a one-to-one correspondence.

[0028] In some embodiments, the at least one battery cluster includes a plurality of battery clusters, and the energy storage system includes at least one energy storage inverter group, each energy storage inverter group including a plurality of energy storage inverters; the number of the plurality of battery clusters corresponding to the energy storage inverter group is the same as the number of the plurality of energy storage inverters in the energy storage inverter group.

[0029] In some embodiments, the at least one energy storage converter group includes two energy storage converter groups, each energy storage converter group including four energy storage converters; or, the at least one energy storage converter group includes one energy storage converter group, the energy storage converter group including eight energy storage converters.

[0030] In the aforementioned energy storage electrical cabinet and energy storage system, by placing the power conversion module, AC protection module, and DC protection module within the first chamber of the cabinet, the space of the first chamber can be fully utilized. Compared to placing the power conversion module outside the cabinet, this saves external space, which is beneficial for the size design of the liquid cooling unit of the energy storage system and thus improves the heat dissipation effect of the energy storage system. By setting the DC protection module as a first DC protection submodule and a second DC protection submodule, and providing a first opening and a second opening connecting the first chamber, and placing the AC protection module and the second DC protection submodule close to the first opening, the power conversion module close to the second opening, and the first DC protection submodule between the AC protection module, the second DC protection submodule, and the power conversion module, this not only further improves the space utilization within the first chamber but also allows for the separate arrangement of the AC protection module and DC protection module (which generate less heat) from the power conversion module (which generates more heat), enabling differentiated heat dissipation for components with lower and higher heat generation, thereby improving the service life and reliability of each component. Therefore, in this embodiment of the application, by utilizing the space of the first chamber and combining it with the amount of heat generated to arrange the AC protection module, DC protection module and power conversion module, not only can the overall structure be made more compact, which is conducive to the size design of the liquid cooling unit and thus conducive to improving energy density, but it can also improve the reliability of the internal components of the first chamber while facilitating heat dissipation, thereby improving the reliability of the overall structure.

[0031] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described 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:

[0033] Figure 1 This is a three-dimensional structural diagram of a portion of the energy storage electrical cabinet in some embodiments of this application, viewed from one perspective.

[0034] Figure 2 This is a three-dimensional structural diagram of a portion of the energy storage electrical cabinet in some embodiments of this application from another perspective.

[0035] Figure 3 This is a three-dimensional structural diagram of a portion of the energy storage electrical cabinet in some embodiments of this application, viewed from the front.

[0036] Figure 4 This is a three-dimensional structural diagram of the power conversion module, AC protection module and DC protection module working together in some embodiments of this application;

[0037] Figure 5 This is a three-dimensional structural diagram of the power conversion module, the first DC protection submodule, and the mounting components in some embodiments of this application.

[0038] Figure 6 This is a three-dimensional structural diagram of the fitting parts of the mounting components and cabinet in some embodiments of this application, viewed from one perspective.

[0039] Figure 7 This is a three-dimensional structural diagram from another perspective showing the cooperation between the mounting components and some structural parts of the cabinet in some embodiments of this application.

[0040] Figure 8 This is a three-dimensional structural diagram of the fastener in some embodiments of this application;

[0041] Figure 9 This is a side view of the buckle structure in some embodiments of this application;

[0042] Figure 10 This is a side sectional view of the fitting structure of the mounting components and cabinet in some embodiments of this application.

[0043] Figure 11 for Figure 6 A magnified schematic diagram of the local structure at point A1;

[0044] Figure 12 for Figure 7 A magnified view of the structure at point A2 in the middle;

[0045] Figure 13 for Figure 10 A magnified schematic diagram of the structure at point A3 in the middle;

[0046] Figure 14 This is a three-dimensional structural diagram of the interaction between conductive components and connector components in some embodiments of this application;

[0047] Figure 15 This is a three-dimensional structural diagram of another part of the structure of the energy storage electrical cabinet in some embodiments of this application;

[0048] Figure 16 for Figure 15 A magnified view of the structure at point A4 in the middle;

[0049] Figure 17 This is a three-dimensional structural diagram of a portion of the energy storage system in some embodiments of this application;

[0050] Figure 18 for Figure 17 The diagram shown is a three-dimensional structural representation of the structure after removing a portion of the structure.

[0051] Figure 19 for Figure 17 The diagram shown is a top view of the structure after removing part of the structure.

[0052] Figure 20 for Figure 19 A magnified view of the structure at point A5 in the middle;

[0053] Figure 21 This is a schematic diagram of the structure of the energy storage electrical cabinet and the enclosure in some embodiments of this application.

[0054] Figure 22 This is a schematic diagram of the airflow direction of the energy storage electrical cabinet in some embodiments of this application;

[0055] Figure 23 This is a schematic diagram of the battery cluster structure in some embodiments of this application;

[0056] Figure 24 This is a schematic diagram of the electrical connections of the energy storage system in some embodiments of this application;

[0057] Figure 25 This is a schematic diagram of the electrical connections of an energy storage system in some other embodiments of this application.

[0058] Explanation of reference numerals in the attached figures:

[0059] Energy storage systems 10 and 10a;

[0060] Energy storage electrical cabinets 100 and 100a;

[0061] Cabinet 110, first chamber Q1, first opening j1, second opening c1, second chamber Q2, third opening j2, fourth opening c2, partition 111, first sub-chamber Q21, second sub-chamber Q22, third chamber Q3, fourth chamber Q4, fifth opening j3, sixth opening c3, ​​fifth chamber Q5;

[0062] Power conversion module 120;

[0063] AC protection module 130, AC fuse module 131, AC surge module 132;

[0064] DC protection module 140, first DC protection submodule 141, first DC fuse module 1411, first DC surge module 1412, second DC protection submodule 142, second DC fuse module 1421, second DC surge module 1422;

[0065] Mounting part 150, base 151, first mounting part 152, bending part 153, clearance hole 15301, second mounting part 154, reinforcing part 155, weight reduction hole 1501, locking hole k;

[0066] Fastener 160, first end e1, second end e2, first extension 161, connecting section 162, second extension 163, main body 1631, first arc transition section 164, second arc transition section 165.

[0067] First grounding component 170;

[0068] Conductive component 180;

[0069] Connector assembly 190;

[0070] Auxiliary connection module T, power distribution component T1, second grounding component T2, conductive connector T3, terminal block R;

[0071] Monitoring signal storage device J;

[0072] Signal conversion and interconnection module S1, functional module S2;

[0073] Communication adapter module W;

[0074] Power distribution protection module X;

[0075] Boxes 200 and 200a, first receiving cavity 201, first channel P1, second channel P2, second receiving cavity 202, third receiving cavity 203;

[0076] 300 liquid-cooled unit;

[0077] Battery cluster 400, high voltage box 410, 410a;

[0078] 500 energy storage converters, 50 energy storage converter sets;

[0079] Air intake equipment 600;

[0080] First direction F1, second direction F2, third direction F3, preset direction Y, target direction M. Detailed Implementation

[0081] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0082] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0083] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0085] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0086] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0087] According to some embodiments of this application, please refer to Figures 1 to 3 , Figure 1 This is a three-dimensional structural diagram of a portion of the energy storage electrical cabinet 100 in some embodiments of this application, viewed from one perspective. Figure 2 This is a three-dimensional structural diagram of a portion of the energy storage electrical cabinet 100 in some embodiments of this application, viewed from another perspective. Figure 3 This is a three-dimensional structural diagram of a portion of the energy storage electrical cabinet 100 in some embodiments of this application from a frontal view. The embodiments of this application provide an energy storage electrical cabinet 100, including a cabinet body 110, a power conversion module 120, an AC protection module 130, and a DC protection module 140.

[0088] The cabinet 110 has a first chamber Q1 and a first opening j1 and a second opening c1, both connected to the first chamber Q1. The cabinet 110 provides structural support and a housing for the components of the energy storage electrical cabinet 100. The first chamber Q1 is a space inside the cabinet 110. The first opening j1 and the second opening c1 are structures for providing airflow openings. For example, the first opening j1 is for allowing cooling airflow to enter the first chamber Q1. The second opening c1 is for allowing cooling airflow to exit the first chamber Q1.

[0089] The power conversion module 120 is located within the first chamber Q1. The power conversion module 120 is a functional unit used to regulate, convert, isolate, or transmit electrical parameters. These electrical parameters include voltage, current, frequency, number of phases, or waveform. For example, if the electrical parameters include voltage, the power conversion module 120 includes a transformer. Another example is that if the electrical parameters include current, the power conversion module 120 includes a current source inverter. Yet another example is that if the electrical parameters include frequency, the power conversion module 120 includes a frequency converter. It is understood that the power conversion module 120 can be a combination of multiple modules. Each of these multiple modules corresponds to different types of electrical parameters. Of course, the power conversion module 120 can also be a single module. No specific limitations are imposed here. In this embodiment, the power conversion module 120 can be a transformer.

[0090] The AC protection module 130 is located in the first chamber Q1. The AC protection module 130 is used to protect AC circuits or AC systems. When abnormal conditions such as overvoltage, undervoltage, overcurrent, short circuit, leakage, phase loss, or overload occur on the AC side, the AC protection module 130 can perform protective actions such as disconnection, current limiting, alarm, and lockout, thereby improving the stability and safety of AC side equipment and systems.

[0091] The DC protection module 140 is located in the first chamber Q1. The DC protection module 140 is used to protect DC circuits or DC systems. When abnormal conditions such as overvoltage, undervoltage, overcurrent, short circuit, leakage, phase loss, or overload occur on the DC side, the DC protection module 140 can perform protective actions such as disconnection, current limiting, alarm, and lockout, thereby improving the stability and safety of DC side equipment and systems.

[0092] Combined with reference Figure 4 , Figure 4 This is a three-dimensional structural diagram of the power conversion module 120, AC protection module 130 and DC protection module 140 cooperating in some embodiments of this application. The AC protection module 130 and DC protection module 140 are both located near the first opening j1, and the power conversion module is located near the second opening c1.

[0093] For example, along the airflow direction from the first opening j1 toward the second opening c1, both the AC protection module 130 and the DC protection module 140 are located upstream of the power conversion module 120.

[0094] The airflow direction along the first opening j1 towards the second opening c1 refers to the flow path formed by the gas entering from the first opening j1 and flowing towards the second opening c1. That is, it is the overall extension direction following the gas flow, from the first opening j1 side towards the second opening c1 side. The fact that the AC protection module 130 and the DC protection module 140 are located upstream of the power conversion module 120 means that, along the gas flow path from the first opening j1 to the second opening c1, the airflow first passes through both the AC protection module 130 and the DC protection module 140 before reaching the power conversion module 120.

[0095] It should be noted that, in the embodiments of this application, upstream refers to the side through which the fluid flows first. Upstream can also be understood as the incoming flow side, the first contact side, etc. Correspondingly, downstream, in contrast to upstream, refers to the side through which the fluid flows last. Downstream can also be understood as the outgoing flow side, the subsequent contact side, etc. Figure 4 For example, the airflow direction is indicated by the dashed arrow. The airflow first flows through the AC protection module 130 and the DC protection module 140, and then flows through the power conversion module 120.

[0096] It is understandable that during the process of airflow from the first opening j1 to the second opening c1, the AC protection module 130 and the DC protection module 140 are located upstream of the power conversion module 120. This allows the airflow to first dissipate heat from the AC protection module 130 and the DC protection module 140, which generate less heat, and then dissipate heat from the power conversion module 120, which generates more heat. This can improve the service life and reliability of the AC protection module 130 and the DC protection module 140.

[0097] Therefore, on the one hand, by placing the power conversion module 120, AC protection module 130, and DC protection module 140 within the first chamber Q1 of the cabinet 110, the space of the first chamber Q1 can be fully utilized. Furthermore, compared to placing the power conversion module 120 outside the cabinet 110, this saves external space in the cabinet 110, which is beneficial for the size design of the liquid cooling unit 300 of the energy storage system, and consequently improves the heat dissipation effect of the energy storage system. In other words, the liquid cooling unit 300 can be made larger, thereby providing stronger thermal management capabilities. On the other hand, by setting a first opening j1 and a second opening c1 that connect the first chamber Q1, and placing the AC protection module 130 and the DC protection module 140 close to the first opening j1 and the power conversion module 120 close to the second opening c1, not only can the space utilization rate in the first chamber Q1 be further improved, but also the AC protection module 130 and the DC protection module 140 with lower heat generation can be arranged separately from the power conversion module 120 with higher heat generation, so that heat dissipation can be differentiated between components with lower heat generation and components with higher heat generation, thereby improving the service life and reliability of each component.

[0098] Therefore, in this embodiment of the application, by utilizing the space of the first chamber Q1 and combining it with the amount of heat generated to arrange the AC protection module 130, DC protection module 140 and power conversion module 120, not only can the overall structure be made more compact, which is beneficial to the size design of the liquid cooling unit 300, thereby improving the energy density, but it can also improve the reliability of the internal components of the first chamber Q1 while facilitating heat dissipation, thereby improving the reliability of the overall structure.

[0099] Based on some embodiments of this application, please continue to refer to Figures 1 to 4 The DC protection module 140 includes a first DC protection submodule 141 and a second DC protection submodule 142. The first DC protection submodule 141 is located between the second DC protection submodule 142 and the AC protection module 130 and the power conversion module 120. That is, the first DC protection submodule 141 is located between the second DC protection submodule 142 and the AC protection module 130 and the power conversion module 120.

[0100] For example, along the airflow direction from the first opening j1 to the second opening c1, the first DC protection submodule 141 is located upstream of the power conversion module 120, and both the AC protection module 130 and the second DC protection submodule 142 are located upstream of the first DC protection submodule 141.

[0101] For example, with Figure 4For example, the airflow direction is indicated by the dashed arrow. The airflow first flows through the AC protection module 130 and the second DC protection submodule 142, then through the first DC protection submodule 141, and then through the power conversion module 120.

[0102] It is understandable that, compared to the case where the first DC protection submodule 141 and the second DC protection submodule 142 are arranged side by side, arranging the DC protection module 140 as the first DC protection submodule 141 and the second DC protection submodule 142 not only allows for more effective use of the space in the first chamber Q1 and makes the layout in the first chamber Q1 more compact, but also, because this layout further takes into account the amount of heat generated when arranging each module, it can further improve heat dissipation performance and thus further improve the reliability of each module.

[0103] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 The energy storage electrical cabinet 100 has a first mode. In the first mode, the first opening j1 is used for air intake, and the second opening c1 is used for air exhaust.

[0104] In this way, the airflow pattern mentioned above can be achieved, that is, the airflow first flows through the AC protection module 130 and the second DC protection submodule 142, then through the first DC protection submodule 141, and then through the power conversion module 120, which is beneficial to further protect the AC protection module 130 and the DC protection module 140.

[0105] It should be noted that the first mode refers to one operating state of the energy storage electrical cabinet 100. Of course, the energy storage electrical cabinet 100 can also have other modes, such as a second mode. For example, the second mode could be a shutdown mode, a reverse mode, etc., without specific limitations. The shutdown mode refers to the energy storage electrical cabinet 100 being in a stopped, non-operating state. The reverse mode refers to an operating mode where the airflow direction is opposite to that in the first mode. It can be understood that by having the energy storage electrical cabinet 100 in multiple modes as mentioned above, it can be used more flexibly according to the state of each component.

[0106] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 The cabinet 110 has a first side and a second side that are arranged opposite to each other along a first direction F1. A first opening j1 is located on the first side, and a second opening c1 is located on the second side. That is, the first opening j1 and the second opening c1 are arranged opposite to each other along the first direction.

[0107] The first opening j1 is located on the first side, that is, in conjunction with reference Figure 2 The first opening j1 can be defined by the wall on the first side of the cabinet 110. The second opening c1 is located on the second side, that is, referring to... Figure 2The second opening c1 may be defined by the wall on the second side of the cabinet 110. For example, with... Figure 1 and Figure 2 For example, the portion of the cavity wall forming the first chamber Q1 on the first side of the cabinet 110 can be composed of components such as channel steel, beams, and sheet metal parts, which are spaced apart to form the first opening j1. The portion of the cavity wall forming the first chamber Q1 on the second side of the cabinet 110 can be composed of components such as channel steel, beams, and sheet metal parts, which are spaced apart to form the second opening c1.

[0108] Thus, by placing the first opening j1 and the second opening c1 on opposite sides of the cabinet 110 along the first direction F1, a through-flow convection cooling air duct can be formed, reducing the risk of airflow short circuit, improving airflow utilization and heat dissipation uniformity, reducing local hot spots inside the cabinet, and improving the heat dissipation efficiency and operational reliability of the energy storage electrical cabinet 100.

[0109] Of course, in some other embodiments, the first opening j1 and the second opening c1 may not be located on opposite sides of the cabinet 110; that is, the first opening j1 and the second opening c1 may be located on adjacent sides of the cabinet 110. It can be understood that, compared with the adjacent side arrangement, the aforementioned opposite side arrangement not only makes better use of the internal space of the first chamber Q1, but also helps to improve heat dissipation efficiency.

[0110] Based on some embodiments of this application, please continue to refer to Figures 1 to 4 The second DC protection submodule 142 and the AC protection module 130 are located on the first side, and the power conversion module 120 is located on the second side. Along the first direction F1, the first DC protection submodule 141 is located between the second DC protection submodule 142 and the AC protection module 130 and the power conversion module 120.

[0111] The second DC protection submodule 142 and the AC protection module 130 are located on the first side, that is, the second DC protection submodule 142 and the AC protection module 130 are closer to the first opening j1, or the second DC protection submodule 142 and the AC protection module 130 are located at the first opening j1. The power conversion module 120 is located on the second side, that is, the power conversion module 120 is closer to the air outlet, or the power conversion module 120 is located at the second opening c1.

[0112] Along the first direction F1, the first DC protection submodule 141 is located between the second DC protection submodule 142 and the AC protection module 130 and the power conversion module 120. That is, the first DC protection submodule 141 is located in the space between the first side and the second side.

[0113] Thus, by arranging the second DC protection submodule 142 and AC protection module 130 on the first side, and the power conversion module 120 on the second side, with the first DC protection submodule 141 positioned between the second DC protection submodule 142, AC protection module 130, and power conversion module 120, a path can be formed where airflow directly and sequentially dissipates heat from the second DC protection submodule 142 and AC protection module 130, and from the first DC protection submodule 141 and power conversion module 120. This path, combined with the aforementioned through-flow convection cooling duct, improves both the space utilization within the first chamber Q1 and the heat dissipation effect.

[0114] Of course, in some other embodiments, the first DC protection submodule 141 may be located on the first side, and the power conversion module 120 may be located on the second side. Along the first direction F1, the second DC protection submodule 142 and the AC protection module 130 may be located between the first DC protection submodule 141 and the power conversion module 120. Alternatively, along the airflow direction from the first opening j1 to the second opening c1, the AC protection module 130 and the DC protection module 140 may be located upstream of the power conversion module 120, with the AC protection module 130 upstream of the DC protection module 140. Another possibility is that, along the airflow direction from the first opening j1 to the second opening c1, the AC protection module 130 and the DC protection module 140 may be located upstream of the power conversion module 120, with the AC protection module 130 upstream of the DC protection module 140. Other arrangements are also possible, and no specific limitations are imposed here.

[0115] It should be noted that, with Figures 1 to 4 For example, the first direction F1 can be considered as the length direction of the energy storage electrical cabinet 100, the second direction F2 can be considered as the width direction of the energy storage electrical cabinet 100, and the third direction F3 can be considered as the height direction of the energy storage electrical cabinet 100. The first direction F1, the second direction F2, and the third direction F3 intersect each other. For example, the first direction F1, the second direction F2, and the third direction F3 intersect each other. It can be understood that the length dimension of the energy storage electrical cabinet 100 can be greater than or equal to the width dimension of the energy storage electrical cabinet 100. Of course, the first direction F1 can also be the width direction of the energy storage electrical cabinet 100, and the second direction F2 can also be the length direction of the energy storage electrical cabinet 100; no specific restrictions are made here.

[0116] For example, in conjunction with reference Figure 1In the illustrated directions, the first direction F1 represents the relative directions of the left and right sides of the energy storage electrical cabinet 100, the second direction F2 represents the relative directions of the front and rear sides of the energy storage electrical cabinet 100, and the third direction F3 represents the relative directions of the top and bottom sides of the energy storage electrical cabinet 100. For example, the front side of the energy storage electrical cabinet 100 can be understood as the side facing the operator or user, based on the maintenance of the energy storage electrical cabinet 100. The bottom side of the energy storage electrical cabinet 100 can be understood as the side facing the support of the energy storage electrical cabinet 100, based on its placement posture. The descriptions of the top, bottom, and other lateral directions mentioned later can be understood in the same way.

[0117] Based on some embodiments of this application, please continue to refer to Figure 4 The AC protection module 130 includes an AC fuse module 131 and an AC surge module 132. The AC fuse module 131 and the AC surge module 132 are spaced apart, with the AC fuse module 131 located on top of the AC surge module 132. The AC fuse module 131 includes a plurality of AC fuses arranged along a second direction F2, and the AC surge module 132 includes a plurality of AC surges arranged along the second direction F2. The AC fuses and AC surges are electrically connected in a one-to-one correspondence.

[0118] An AC fuse is a component used in AC circuits to melt and break in the event of overcurrent or short circuit, thus providing overcurrent protection. An AC surge protector is a component used in AC circuits to suppress transient overvoltages and lightning surges, thus providing overvoltage or lightning protection.

[0119] The one-to-one electrical connection between AC fuses and AC surges means that there is a one-to-one correspondence between AC fuses and AC surges. For example, with... Figure 4 For example, the AC fuse module 131 is located on the top side of the AC surge module 132 along the third direction F3. There are three AC fuses and three AC surges. The bottom side of the AC fuses is electrically connected to the AC surges, which are used to connect to the grounding components.

[0120] Electrical connection means that, in the non-operating state, no current flows between the AC fuse and the corresponding AC surge. In the operating state, current flows between the AC fuse and the corresponding AC surge.

[0121] Thus, by arranging the AC fuse module 131 and the AC surge module 132 at intervals, a channel for airflow can be formed, thereby further improving the heat dissipation effect. By arranging the AC fuse and AC surge along the second direction F2, the space of the cabinet 110 along the second direction F2 can be utilized, thereby further improving the space utilization rate of the first chamber Q1.

[0122] Based on some embodiments of this application, please continue to refer to Figure 4and in conjunction with reference Figure 5 , Figure 5 This is a three-dimensional structural diagram showing the interaction between the power conversion module 120, the first DC protection submodule 141, and the mounting component 150 in some embodiments of this application. The energy storage electrical cabinet 100 also includes the mounting component 150 disposed in the first chamber Q1. The mounting component 150 is detachably connected to the cabinet body 110, and the first DC protection submodule 141 is mounted on the mounting component 150.

[0123] For example, the mounting component 150 and the cabinet 110 can be connected by snap-fit, plug-in or screw, without specific limitations.

[0124] Thus, since the first DC protection submodule 141 is located between the second DC protection submodule 142 and the AC protection module 130 and the power conversion module 120, the first DC protection submodule 141 can be directly maintained. The mounting piece 150 is detachably connected to the cabinet 110, allowing the mounting piece 150 containing the first DC protection submodule 141 to be removed. This facilitates maintenance of the second DC protection submodule 142 and the AC protection module 130 on the first side, further enhancing the utilization of the space along the second direction F2 on the first side and improving the overall compactness of the layout.

[0125] It should be noted that, taking the bolted connection between mounting component 150 and cabinet 110 as an example, by setting up mounting component 150, the complex maintenance process, which may require a long time and involve the disassembly of multiple parts, is simplified into a more standardized and rapid operation of "removing bolts → pulling out the module → replacing → pushing back → tightening bolts". During this process, since all maintenance operations are completed in a more open area, this not only improves the operator's working posture and enhances safety, but also reduces the risk of secondary damage or safety hazards caused by tools or body parts being inserted into crowded cabinets.

[0126] Based on some embodiments of this application, please continue to refer to Figure 1 , Figures 3 to 5 The first DC protection submodule 141 includes a first DC fuse module 1411 and a first DC surge module 1412. The first DC fuse module 1411 and the first DC surge module 1412 are staggered along the direction from the top side to the bottom side of the mounting member 150. Along the second direction F2, the first DC fuse module 1411 and the first DC surge module 1412 are also staggered. The arrangement directions of the second DC protection submodule 142 and the AC protection module 130 with the power conversion module 120, the second direction F2, and the direction from the top side to the bottom side of the mounting member 150 intersect each other.

[0127] For example, in this embodiment of the application, the arrangement direction of the second DC protection submodule 142 and the AC protection module 130 and the power conversion module 120 is parallel to the first direction F1. The direction from the top side of the mounting member 150 to the bottom side of the mounting member 150 is parallel to the third direction F3. The first direction F1, the second direction F2, and the direction from the top side of the mounting member 150 to the bottom side of the mounting member 150 can be perpendicular to each other.

[0128] Thus, since the first DC fuse module 1411 and the first DC surge module 1412 are staggered in two directions, not only can the space utilization be improved, but a more tortuous airflow channel can also be formed, which is conducive to the airflow staying at the corresponding module to fully dissipate heat from the corresponding module and improve the heat dissipation effect.

[0129] Based on some embodiments of this application, please continue to refer to Figure 1 , Figures 3 to 5 The first DC fuse module 1411 and the first DC surge module 1412 are spaced apart along a third direction F3. The first DC fuse module 1411 includes a plurality of first DC fuses arranged along a first direction F1, and the first DC surge module 1412 includes a plurality of first DC fuses arranged along a first direction F1. The first DC fuses and the first DC surge are electrically connected in a one-to-one correspondence.

[0130] The first DC fuse is used in DC circuits to melt and provide overcurrent protection in the event of overcurrent or short circuit. The first DC surge protector is used in DC circuits to suppress transient overvoltages and lightning surges, providing overvoltage or lightning protection.

[0131] The term "electrically connected in a one-to-one correspondence between the first DC fuse and the first DC surge" means that there is a one-to-one relationship between the first DC fuse and the first DC surge. For example, using... Figure 4 For example, the first DC fuse module 1411 is located on the top side of the first DC surge module 1412 along the third direction F3, and the bottom side of the first DC fuse is electrically connected to the first DC surge, which is used to connect to the grounding component.

[0132] Electrical connection means that, in the non-operating state, no current flows between the first DC fuse and the corresponding first DC surge. In the operating state, current flows between the first DC fuse and the corresponding first DC surge.

[0133] This not only helps to further improve space utilization by combining the shape of the first chamber Q1, but also facilitates the maintenance of the first DC protection submodule 141.

[0134] Based on some embodiments of this application, please continue to refer to Figure 4The second DC protection submodule 142 includes a second DC fuse module 1421 and a second DC surge module 1422. The second DC fuse module 1421 and the second DC surge module 1422 are spaced apart, with the second DC fuse module 1421 located on top of the second DC surge module 1422. The second DC fuse module 1421 includes a plurality of second DC fuses arranged along a second direction F2, and the second DC surge module 1422 includes a plurality of second DC surges arranged along the second direction F2. The second DC fuses and second DC surges are electrically connected in a one-to-one correspondence.

[0135] The second DC fuse is a component used in DC circuits to melt and provide overcurrent protection in the event of overcurrent or short circuit. The second DC surge protector is a component used in DC circuits to suppress transient overvoltages and lightning surges, providing overvoltage or lightning protection.

[0136] The term "electrically connected in a one-to-one correspondence between the second DC fuse and the second DC surge" means that the second DC fuse and the second DC surge are in a one-to-one relationship. For example, using... Figure 4 For example, the second DC fuse module 1421 is located on the top side of the second DC surge module 1422 along the third direction F3, and the bottom side of the second DC fuse is electrically connected to the second DC surge, which is used to connect to the grounding component.

[0137] Electrical connection means that, in the non-operating state, no current flows between the second DC fuse and the corresponding second DC surge. In the operating state, current flows between the second DC fuse and the corresponding second DC surge.

[0138] Thus, by arranging the second DC fuse module 1421 and the second DC surge module 1422 at intervals, a channel for airflow can be formed, thereby further improving the heat dissipation effect. By arranging the second DC fuse and AC surge along the second direction F2, the space of the cabinet 110 along the second direction F2 can be utilized, thereby further improving the space utilization rate of the first chamber Q1.

[0139] Based on some embodiments of this application, please continue to refer to Figure 4 and Figure 5 Along the direction from the top side of the mounting member 150 to the bottom side of the mounting member 150, the first DC fuse module 1411 and the first DC surge module 1412 are spaced apart, and the first DC surge module 1412 is located on the bottom side of the first DC fuse module 1411; and / or, along the second direction F2, the first DC fuse module 1411 and the first DC surge module 1412 are spaced apart, the first DC surge module 1412 is located on one side of the operating side of the first DC fuse module 1411, and the operating side of the first DC surge module 1412 is located away from the first DC fuse module 1411.

[0140] The operating side of the first DC fuse module 1411 refers to the side facing the operator or user, facilitating operation and access. The operating side of the first DC surge module 1412 can be understood in the same way as the operating side of the first DC fuse module 1411, and will not be elaborated here. In other words, based on the maintenance of the energy storage electrical cabinet 100, the operating side of the first DC fuse module 1411 is the side facing the operator or user, and the first DC surge module 1412 is located in front of the first DC fuse module 1411. That is to say, based on the maintenance of the energy storage electrical cabinet 100, the first DC surge module 1412 is closer to the operator or user than the first DC fuse module 1411.

[0141] Thus, since the first DC fuse module 1411 and the first DC surge module 1412 are spaced apart along the third direction F3, an airflow channel can be formed. Because the first DC surge module 1412 is located on the bottom side of the first DC fuse module 1411, maintenance is facilitated based on the structures of both modules. Since the first DC fuse module 1411 and the first DC surge module 1412 are spaced apart along the second direction F2, an airflow channel can be formed. Because the first DC surge module 1412 is located on the front side of the first DC fuse module 1411, maintenance is facilitated based on the structures of both modules. It is understandable that when the first DC fuse module 1411 and the first DC surge module 1412 are spaced apart along a third direction F3 and when they are spaced apart along a second direction F2, more channels can be formed, which is beneficial to improving heat dissipation. When the first DC surge module 1412 is located on the bottom side of the first DC fuse module 1411 and when it is located on the front side of the first DC fuse module 1411, maintenance convenience can be further improved.

[0142] Based on some embodiments of this application, please continue to refer to Figures 6 to 8 , Figure 6 This is a three-dimensional structural diagram from one perspective showing the partial structural cooperation between the mounting component 150 and the cabinet 110 in some embodiments of this application. Figure 7 This is a three-dimensional structural diagram from another perspective showing the partial structural cooperation between the mounting component 150 and the cabinet 110 in some embodiments of this application. Figure 8The diagram shows a three-dimensional structure of the latching member 160 in some embodiments of this application. The energy storage electrical cabinet 100 also includes a latching member 160 disposed in the first chamber Q1. The latching member 160 is disposed on one side of the mounting member 150 along the second direction F2, and the latching member 160 and the mounting member 150 are latched together.

[0143] The snap-fit ​​element 160 is an elastic snap-fit ​​connector that achieves a snap-fit ​​fixation through its own elastic deformation. The snap-fit ​​element 160 and the mounting element 150 can engage in a snap-fit ​​relationship along the second direction F2; that is, the snap-fit ​​element 160 and the mounting element 150 are mutually snapped, fastened, and fixed together along the second direction F2. For example, when the mounting element 150 is pushed into the first chamber Q1 along the second direction F2, the mounting element 150 and the snap-fit ​​element 160 are mutually snapped together along the second direction F2. Alternatively, the snap-fit ​​action and the force applied to the snap-fit ​​element 160 and the mounting element 150 are along the second direction F2.

[0144] Thus, by setting the snap fastener 160, not only can the installation accuracy of the mounting component 150 be improved, but the stability of the connection between the mounting component 150 and the cabinet 110 can also be improved, thereby enhancing the reliability of the overall structure.

[0145] Based on some embodiments of this application, please continue to refer to Figure 2 , Figure 4 , Figures 6 to 8 and in conjunction with reference Figures 9 to 13 , Figure 9 This is a side view of the buckle 160 in some embodiments of this application. Figure 10 This is a side sectional view of the fitting structure of the mounting component 150 and the cabinet 110 in some embodiments of this application. Figure 11 for Figure 6 A magnified view of the structure at point A1. Figure 12 for Figure 7 A magnified view of the structure at point A2 in the middle. Figure 13 for Figure 10 The enlarged structural diagram at point A3 shows that cabinet 110 has a third side and a fourth side arranged opposite each other along the second direction F2. The fastener 160 has a first end e1 near the third side and a second end e2 near the fourth side. The first end e1 connects to cabinet 110, and the second end e2 is located on top of the first end e1. The second end e2 is warped away from the first end e1 and engages with the mounting member 150 in a snap-fit ​​configuration.

[0146] The warping setting of the second end e2 refers to the fact that the second end e2 is not in a straight state, but is bent and raised to form a warped structure, which provides elastic force or realizes functions such as guiding, locking, and yielding through warping deformation.

[0147] Thus, since the snap fastener 160 has a first end e1 near the third side and a second end e2 near the fourth side, it can be adapted to engage with the mounting member 150 along the second direction F2, thereby facilitating the engagement of the snap fastener 160 and the mounting member 150. By warping the second end e2 of the snap fastener 160, it is easier to assemble and tighten the mounting member 150.

[0148] Based on some embodiments of this application, please continue to refer to Figures 8 to 13 The fastener 160 includes a first extension 161, a connecting section 162, and a second extension 163. The first extension 161 extends along a second direction F2 and connects to the cabinet 110. One end of the first extension 161 along the second direction F2 is a first end e1, and the other end of the first extension 161 along the second direction F2 is connected to the connecting section 162. The connecting section 162 extends in a direction away from the top side of the first extension 161. The second extension 163 is connected to the end of the connecting section 162 away from the first extension 161, and the end of the second extension 163 away from the connecting section 162 is a second end e2.

[0149] Thus, since the latching member 160 extends approximately along the second direction F2, it can guide the insertion of the mounting member 150 into the first chamber Q1. An interference fit is formed between the second end e2 and the latch on the mounting member 150, thereby limiting and pre-locking the mounting member 150 in the third direction F3, which facilitates the installation of the mounting member 150 by the operator. Furthermore, when the energy storage electrical cabinet 100 is under transportation or other vibration conditions, the aforementioned latching member 160 can also serve as a shock absorber.

[0150] Based on some embodiments of this application, please continue to refer to Figures 8 to 13 The second extension 163 includes a main body 1631 connected to the connecting section 162, and a second end e2 connected to the main body 1631. The main body 1631 extends along a predetermined direction Y from the third side to the fourth side. The predetermined direction Y is angled to the second direction F2. The end of the main body 1631 closer to the fourth side is closer to the first extension 161 than the end of the main body 1631 closer to the third side. And / or, the connecting section 162 extends along the top side of the mounting member 150 towards the bottom side of the mounting member 150. And / or, the fastener 160 also includes a first arc transition section 164, through which the connecting section 162 and the first extension 161 are connected. And / or, the fastener 160 also includes a second arc transition section 165, through which the connecting section 162 and the second extension 163 are connected. And / or, the fastener 160 is a one-piece molded part.

[0151] The main body 1631 is connected to the connecting section 162 and is the main extension and load-bearing part. The second end e2 is connected to the main body 1631 and is an end structure used for locking, guiding, limiting, or abutting. This not only facilitates molding but also helps with assembly guidance.

[0152] The main body 1631 extends from the third side to the fourth side, and its extension direction (i.e., the preset direction Y) is not parallel to or coincident with the second direction F2, but at a certain angle. The end of the main body 1631 closer to the third side is closer to the first extension segment 161, causing the main body 1631 to be angled upwards relative to the first extension segment 161. This not only creates an inclined elastic arm structure for the latching member 160, resulting in better elasticity and a larger deformation space, but also improves the locking force, rebound ability, and guiding smoothness.

[0153] It should be noted that "from the third side to the fourth side, the main body 1631 extends along the preset direction Y" means describing the static structural arrangement of the main body 1631, rather than a dynamic description of the main body 1631. The same understanding applies to the extension scenarios mentioned later.

[0154] The extension direction of connecting segment 162 is in the third direction, F3. This not only reduces the risk of bending and deformation but also improves the stability of the installation.

[0155] The connection segment 162 and the first extension segment 161 are not sharp angles or right angles, but rather smoothly transition through a rounded surface. This helps reduce the risk of stress concentration and also facilitates assembly and manufacturing.

[0156] The connecting section 162 and the second extension section 163 also use a smooth arc transition. This not only helps to further reduce the risk of stress concentration and improve fatigue strength, but also improves the uniformity of stress during deformation, making the rebound more stable.

[0157] The buckle 160 is integrally molded, meaning it is seamless, weld-free, and assembly-free. It can be manufactured through methods such as injection molding, stamping, or bending, without any specific restrictions. This not only improves the structural strength of the buckle 160 but also enhances production efficiency and elasticity consistency.

[0158] It is understandable that when all the aforementioned situations involving the snap fastener 160 are implemented together, all the advantages mentioned above are present.

[0159] Based on some embodiments of this application, please continue to refer to 8 to 9. Figure 13 A line parallel to the second direction F2 is defined as a reference line, and the angle between the preset direction Y and the reference line is 2° to 7°.

[0160] For example, the angle between the preset direction Y and the reference line can be 2°, 3°, 4°, 5°, 6°, or 7°. The angle between the preset direction Y and the reference line can be any other value within the range of 2° to 7°, and no specific limitation is made here.

[0161] Thus, by controlling the extension direction of the main body 1631 from the third side to the fourth side (that is, the preset direction Y), it is possible to further balance the elasticity of the main body 1631 with the locking force, rebound ability and guiding smoothness.

[0162] Based on some embodiments of this application, please continue to refer to Figures 8 to 13 A line parallel to the second direction F2 is defined as the reference line, and the warping direction of the second end e2 is defined as the target direction M. The angle between the target direction M and the reference line is 38° to 43°.

[0163] For example, the angle between the target direction M and the reference line is 38°, 39°, 40°, 41°, 41.5°, 42°, or 43°. The angle between the target direction M and the reference line can be any other value within the range of 38° to 43°, and no specific limitation is made here.

[0164] It can be understood that the side of the second end e2 that is connected to the main body 1631 is closer to the first extension segment 161 than the side of the second end e2 that is away from the main body 1631. In this way, a warped structure can be formed in the second end e2. The warping direction of the second end e2 is that the side of the second end e2 that is connected to the main body 1631 points to the side of the second end e2 that is away from the main body 1631.

[0165] Thus, by controlling the degree of warping deformation of the second end e2, it is possible to further take into account functions such as guiding, locking, and displacement while taking into account elastic force.

[0166] Based on some embodiments of this application, please continue to refer to Figures 5 to 7 The mounting component 150 includes a base 151, a first mounting portion 152, a bending portion 153, and a second mounting portion 154. The first mounting portion 152 is located on the bottom side of the base 151, and the bending portion 153 is located on the top side of the base 151. Both the first mounting portion 152 and the bending portion 153 are located on the same side of the base 151 along the second direction F2. The second mounting portion 154 is located on the side of the bending portion 153 opposite to the base 151 and opposite to the first mounting portion 152. A portion of the first DC protection submodule 141 is located in the first mounting portion 152, and another portion of the first DC protection submodule 141 is located in the second mounting portion 154. The first direction F1, the second direction F2, and the direction from the top side of the mounting component 150 to the bottom side of the mounting component 150 intersect each other.

[0167] This not only facilitates the staggered arrangement of modules, further improving space utilization and forming airflow channels that enhance heat dissipation, but also increases the structural strength of the mounting component 150, thereby improving the stability and reliability of the overall structure.

[0168] Based on some embodiments of this application, please continue to refer to Figures 5 to 7 The energy storage electrical cabinet 100 also includes a first grounding component 170. The first grounding component 170 is located on the first mounting part 152. The AC protection module 130 and the DC protection module 140 are both connected to the first grounding component 170. The bending part 153 is provided with a clearance hole 15301 that is opposite to the first grounding component 170.

[0169] For example, with Figure 4 and Figure 5 For example, AC surge, first DC surge module 1412 and second DC surge module 1422 are both connected to the first grounding component 170. The first grounding component 170 is used to connect to, for example, the main grounding component of the energy storage electrical cabinet 100, which can be understood with reference to the second grounding component T2 shown below.

[0170] Thus, by providing a first grounding element 170 on the first mounting portion 152, the connection between the first grounding element 170 and each of the three components—the AC surge, the first DC surge module 1412, and the second DC surge module 1422—is shortened, thereby improving the response speed of the three components. Furthermore, since the bending portion 153 has a clearance hole 15301 opposite to the first grounding element 170, it facilitates connecting the first grounding element 170 and each of the three components—the AC surge, the first DC surge module 1412, and the second DC surge module 1422—improving operational convenience in confined spaces.

[0171] Based on some embodiments of this application, please continue to refer to Figures 5 to 7 The mounting component 150 is a one-piece molded part; and / or, at least one of the four components, namely the base 151, the first mounting part 152, the bending part 153, and the second mounting part 154, is provided with a weight-reducing hole 1501; and / or, the mounting component 150 further includes a plurality of reinforcing parts 155, a portion of which is connected between the bending part 153 and the first mounting part 152, and another portion of which is connected between the bending part 153 and the second mounting part 154; and / or, at least one of the base 151 and the first mounting part 152 is detachably connected to the cabinet 110.

[0172] Mounting component 150 is a single-piece molded structure. The base 151, first mounting part 152, bending part 153, second mounting part 154, etc., are machined in one piece, without splicing, welding, or threaded assembly between them. This improves the overall structural strength and facilitates manufacturing.

[0173] By opening weight-reducing holes 1501 at one or more of the following locations: base 151, first mounting part 152, bending part 153, and second mounting part 154, the overall weight can be reduced, material costs can be lowered, and material accumulation can be reduced, which is beneficial for the integral molding of the mounting part 150.

[0174] Reinforcing ribs or reinforcing plates are provided between the bent portion 153 and the first mounting portion 152, and between the bent portion 153 and the second mounting portion 154, to improve the structural strength and rigidity of the connection points. This not only enhances the structural strength and resistance to deformation at the bends, but also distributes the stress, reducing the risk of stress concentration and fracture.

[0175] At least one of the base 151 and the first mounting part 152 is detachably assembled to the cabinet 110 by means of screws, bolts, clips, plugs, etc., rather than being fixedly connected or integrally formed. This not only facilitates installation and disassembly, but also facilitates later inspection, debugging, and wiring, improving maintenance convenience.

[0176] It is understandable that all the aforementioned advantages are present when all the aforementioned installation components 150 are implemented together.

[0177] Of course, in some other embodiments, the mounting component 150 may also be in other structural forms, such as an L-shaped plate, etc., without specific limitations.

[0178] Based on some embodiments of this application, please continue to refer to Figures 5 to 7 A reinforcing portion 155 is provided on the side of the base 151 facing the second mounting portion 154, and the reinforcing portion 155 is located on the bottom side of the bending portion 153. The reinforcing portion 155 provided on the side of the base facing the second mounting portion 154 and located on the bottom side of the bending portion 153 is defined as the first reinforcing portion 155. The first reinforcing portion 155 is configured to guide airflow toward the first DC protection submodule 141.

[0179] Thus, by providing a reinforcing part 155 that can guide airflow toward the first DC protection submodule 141, the heat dissipation effect of the first DC protection submodule 141 can be further improved.

[0180] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 and in conjunction with reference Figure 14 , Figure 14This is a three-dimensional structural diagram showing the cooperation between the conductive component 180 and the connector component 190 in some embodiments of this application. The cabinet 110 also has a second chamber Q2, and a third opening j2 and a fourth opening c2, both connected to the second chamber Q2. The second chamber Q2 is located on the bottom side of the first chamber Q1. The energy storage electrical cabinet 100 also includes a conductive component 180 disposed in the second chamber Q2 and a connector component 190 disposed on the conductive component 180. One end of the conductive component 180 is used to connect to the energy storage converter 500, and the other end of the conductive component 180 is used to connect to the high-voltage box 410 of the battery cluster 400. The connector component 190 is connected to the DC protection module 140.

[0181] The third opening j2 and the fourth opening c2 are structures used to provide airflow passages. For example, one of the third opening j2 and the fourth opening c2 is an air inlet, and the other is an air outlet. Taking the third opening j2 as the air inlet and the fourth opening c2 as the air outlet as an example, a second chamber Q2 is provided inside the cabinet 110, and the third opening j2 and the fourth opening c2 are opened at corresponding positions in the cabinet 110. External airflow can enter the second chamber Q2 through the third opening j2, circulate internally, and then exit through the fourth opening c2, forming a heat dissipation channel. This helps to improve heat dissipation efficiency.

[0182] The second chamber Q2 is located on the bottom side of the first chamber Q1, which not only facilitates the separation of electrical components and improves safety and anti-interference, but also facilitates the connection of external components.

[0183] The conductive component 180 can be a conductive part such as a copper busbar, aluminum busbar, or cable. The connector assembly 190 can be a component such as a terminal block, connector, or quick connector. Both the conductive component 180 and the connector assembly 190 are installed in the second chamber Q2, which is equivalent to a centralized arrangement of conductive and wiring components, thereby enabling edge assembly and maintenance. Furthermore, the connector assembly 190 is directly mounted on the conductive component 180, making the connection more reliable and reducing contact resistance.

[0184] One end of the conductive component 180 is used to connect to the energy storage converter 500, and the other end is used to connect to the high-voltage box 410 of the battery cluster 400. That is, the conductive component 180, as a high-voltage power transmission component, can achieve stable and low-loss high-voltage transmission between the battery cluster 400 and the energy storage converter 500, facilitating system expansion, maintenance, and replacement. It should be noted that... Figure 14 The diagram illustrates a scenario where both ends of the conductive component 180 are connected to cables.

[0185] For example, with Figure 14 For example, the conductive component 180 includes a plurality of conductive elements spaced apart along a first direction F1. The conductive elements are bent into shape so that their two ends are opposite to each other and spaced apart along a second direction F2. This structure not only facilitates wiring but also improves space utilization and creates airflow channels.

[0186] Connector assembly 190 serves as an electrical connection node, electrically connected to DC protection module 140. Connector assembly 190 is used to supply power to the DC surge module. This allows for faster connection to DC protection module 140, easier installation and removal, and more reliable connection.

[0187] Thus, by independently setting the second chamber Q2 and the first chamber Q1 in separate upper and lower layers, and forming independent heat dissipation channels through the third opening j2 and the fourth opening c2, not only can the overall structure be made more compact, but the heat dissipation effect can also be improved. By placing the conductive component 180 and the connector component 190 in the second chamber Q2, the structure is centralized and orderly, and the protection is higher. By connecting the two ends of the conductive component 180 to the high-voltage box 410 of the battery cluster 400 and the energy storage converter 500 respectively, more stable and efficient high-voltage power transmission can be achieved. Furthermore, by connecting the connector component 190 on the conductive component 180 to the DC protection module 140, the DC protection module 140 can be quickly assembled and maintained, improving the system safety and reliability.

[0188] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 , Figure 14 and in conjunction with reference Figure 15 , Figure 15 This is a perspective structural diagram of another part of the structure of the energy storage electrical cabinet 100 in some embodiments of this application. The cabinet body 110 includes a partition 111 disposed in the second chamber Q2. The partition 111 divides the second chamber Q2 into a first sub-cavity Q21 and a second sub-cavity Q22. Both the first sub-cavity Q21 and the second sub-cavity Q22 are connected to a third opening j2 and a fourth opening c2. A conductive component 180 and a connector component 190 are disposed in the first sub-cavity Q21. The energy storage electrical cabinet 100 also includes an auxiliary connection module T disposed in the second sub-cavity Q22. Wherein... Figure 3 In the illustrated scenario, the separator 111 is not shown.

[0189] Thus, by using the first sub-cavity Q21 to house the conductive component 180 and the second sub-cavity Q22 to house the auxiliary connection module T, physical separation of the high-voltage circuit and the low-voltage auxiliary circuit can be achieved, reducing the risk of interference, short circuits, and accidental contact, thereby improving electrical safety. Simultaneously, the two sub-cavities share the third opening j2 and the fourth opening c2, eliminating the need for additional vents and simplifying the overall structure, allowing for effective heat dissipation of both the conductive components and the auxiliary module. Furthermore, the separate arrangement of the high-voltage circuit and the auxiliary circuit facilitates wiring, assembly, and subsequent maintenance.

[0190] Based on some embodiments of this application, please continue to refer to Figure 15 and in conjunction with reference Figure 16 , Figure 16for Figure 15 The enlarged structural diagram at point A4 shows that the auxiliary connection module T includes a power distribution component T1, which is used to assist in forming a single-phase power supply circuit; and / or, the auxiliary connection module T includes a second grounding component T2, which is configured as a grounding output component of the energy storage electrical cabinet 100; and / or, the auxiliary connection module T includes a conductive connector T3, which is used to connect the power conversion module 120 and the liquid cooling unit 300.

[0191] The power distribution component T1 is a single-phase power distribution and transfer component in the auxiliary connection module T. It is used to split and transfer single-phase power, providing a more standardized and safer single-phase power supply for auxiliary equipment inside the cabinet or small loads outside the cabinet. For example, the power distribution component T1 can be a single-phase terminal block, a single-phase circuit breaker, a single-phase circuit breaker, a single-phase distribution busbar, etc., without specific limitations.

[0192] The second grounding component T2 serves as the external grounding interface for grounding connections of external equipment, cables, racks, etc. For example, the second grounding component T2 can be a grounding busbar, grounding terminal, PE terminal, etc., without specific limitations.

[0193] The conductive connector T3 is used to establish an electrical connection between the power conversion module 120 and the liquid cooling unit 300, supplying power to the liquid cooling unit 300 or transmitting control signals. Exemplarily, the conductive connector T3 can be a terminal block, connector, copper busbar, cable adapter, etc., without specific limitations.

[0194] Thus, in conjunction with the above, by setting up the power distribution component T1, the second grounding component T2, and the conductive connector T3, single-phase power distribution, external grounding output, and electrical connection between the power conversion module 120 and the liquid cooling unit 300 can be realized respectively. This makes the auxiliary electrical circuit layout more regular, the wiring more reliable, facilitates on-site installation, commissioning, and subsequent maintenance, and improves the electrical safety and system integration of the energy storage electrical cabinet 100.

[0195] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 , Figure 15 The cabinet 110 also has a third chamber Q3, which is located on the top side of the first chamber Q1. The energy storage electrical cabinet 100 also includes a monitoring signal storage device J, a signal conversion and interconnection module S1, and a communication conversion module W, all disposed within the third chamber Q3. The monitoring signal storage device J is located on the bottom wall of the third chamber Q3, and the signal conversion and interconnection module S1 and the communication conversion module W are respectively located on opposite sides of the monitoring signal storage device J.

[0196] The monitoring signal storage device J is used to collect, record, and store various monitoring signals from the energy storage electrical cabinet 100. The monitoring information can include voltage, current, temperature, insulation, switch status, fault information, operating data, etc., without specific limitations. For example, the monitoring signal storage device J is a CD / DVD burner. This allows for the recording and traceability of operating data, facilitating fault diagnosis and improving system monitorability and safety.

[0197] The signal conversion and interconnection module S1 is used for centralized conversion, interconnection, and transmission of various analog signals, digital signals, detection signals, and status signals within the cabinet 110, achieving standardized connection of signal paths. For example, the signal conversion and interconnection module S1 can be connected to a fire protection system or an energy storage converter 500. Exemplarily, the signal conversion and interconnection module S1 can be a terminal block. This facilitates installation, wiring, and maintenance, and improves signal transmission stability and anti-interference capabilities.

[0198] The communication switching module W is used to realize the switching of communication signals, protocol conversion, and data exchange between various electrical units, ensuring stable and reliable communication between the equipment inside the cabinet and external systems. For example, the communication switching module W can be a switch.

[0199] Thus, by setting up the monitoring signal storage device J, monitoring signals and operational data of cabinet 110 can be collected and stored, facilitating status monitoring and fault tracing. By setting up the signal transfer and interconnection module S1, centralized transfer and standardized wiring of various detection signals can be achieved. By setting up the communication transfer module W, communication interaction and signal transmission between units can be realized. The combination of these three components makes the layout of the monitoring, signal, and communication system of cabinet 110 simpler, its operation more reliable, and its installation, commissioning, and subsequent maintenance easier. In addition, by placing the monitoring signal storage device J on the bottom wall of the third chamber Q3, and placing the signal transfer and interconnection module S1 and the communication transfer module W on opposite sides of the monitoring signal storage device J, the overall structure is not only more compact and easier to maintain, but also, because the monitoring signal storage device J is located on the bottom wall of the third chamber Q3, the center of gravity of cabinet 110 is lowered, thus making the overall structure more stable.

[0200] Of course, in some embodiments of this application, please continue to refer to Figures 1 to 3 The energy storage electrical cabinet 100 also includes a functional module S2. Along the first direction F1, the functional module S2 is located between the signal switching and interconnection module S1 and the communication switching module W. Along the third direction F3, the functional module S2 is located on the top side of the monitoring signal storage device J. The functional module S2 is disposed on the side wall of the third chamber Q3 along the second direction F2. This further improves space utilization. Exemplarily, the functional module S2 may include a power supply module, a miniature circuit breaker, etc., without specific limitations.

[0201] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 The cabinet 110 also has a fourth chamber Q4, and a fifth opening j3 and a sixth opening c3, ​​both connected to the fourth chamber Q4. The fourth chamber Q4 is located on the top side of the third chamber Q3. The energy storage electrical cabinet 100 also includes a power distribution protection module X located in the fourth chamber Q4. One end of the power distribution protection module X is connected to the power conversion module 120, and the other end of the power distribution protection module X is connected to the AC protection module 130.

[0202] The fifth opening j3 and the sixth opening c3 are structures used to provide airflow openings. For example, the fifth opening j3 is an air inlet and the sixth opening c3 is an air outlet.

[0203] The power distribution protection module X is an electrical module used for overload protection and short-circuit protection. Exemplarily, the power distribution protection module X includes at least one molded case circuit breaker. For example, two molded case circuit breakers are provided, connected in series.

[0204] Thus, by setting up the power distribution protection module X, not only can the safety and reliability of AC power distribution be improved, but the heat dissipation effect can also be enhanced by utilizing the airflow channel formed by the fifth opening j3 and the sixth opening c3 connected to the fourth chamber Q4.

[0205] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 Along the bottom side of cabinet 110 towards the top side of cabinet 110, the second chamber Q2, the first chamber Q1, the third chamber Q3, and the fourth chamber Q4 are arranged sequentially. Here, "sequentially" only indicates the location of each chamber and does not specify the manufacturing process of the chambers.

[0206] This allows for greater utilization of the vertical space of the energy storage electrical cabinet 100 while reducing its horizontal space, thus facilitating the size design of the liquid-cooled unit 300. Furthermore, since heavier electrical components, such as the power conversion module 120, are located in the lower middle part of the cabinet 110, the overall center of gravity of the energy storage electrical cabinet 100 is lower, which helps improve the overall structural stability.

[0207] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 The cabinet 110 also has a fifth chamber Q5. The energy storage electrical cabinet 100 also includes a UPS (Uninterruptible Power Supply) and an SCU (System Control Unit). The UPS and SCU are located within the fifth chamber Q5. This further utilizes the longitudinal space of the energy storage electrical cabinet 100.

[0208] For example, the space utilization rate can be further improved by adjusting the volume of the fifth chamber Q5 and placing the fire cylinder of the fire protection system of the energy storage system outside the fifth chamber Q5.

[0209] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 and in conjunction with reference Figures 17 to 21 , Figure 17 This is a three-dimensional structural diagram of a portion of the energy storage system 10 in some embodiments of this application. Figure 18 for Figure 17 The diagram shown is a three-dimensional representation of the structure after removing some of its components. Figure 19 for Figure 17 The diagram shown is a top view of the structure after removing some of the structural elements. Figure 20 for Figure 19 A magnified view of the structure at point A5 in the middle. Figure 21 This is a schematic diagram of the partial structure of the energy storage electrical cabinet 100 and the enclosure 200 in some embodiments of this application. This application provides an energy storage system 10, including the enclosure 200 and the energy storage electrical cabinet 100 as described in any of the above embodiments. The enclosure 200 has a first receiving cavity 201. The energy storage electrical cabinet 100 is disposed within the first receiving cavity 201. The cavity wall of the first receiving cavity 201 and the outer wall of the energy storage electrical cabinet 100 define a first channel P1 and a second channel P2. The first channel P1 connects to a first opening j1, and the second channel P2 connects to a second opening c1.

[0210] The first channel P1 and the second channel P2 are structures used to provide channels for airflow. For example, the first channel P1 refers to the airflow channel through which external cooling air enters the cabinet 110, introducing low-temperature, dry external air into the cabinet 110 to cool and dissipate heat from the internal electrical components. The second channel P2 refers to the airflow channel through which heated air flows out of the cabinet 110, collecting and expelling the high-temperature air that has absorbed heat from the cabinet 110.

[0211] Exemplary, in conjunction with some possible implementations illustrated in the foregoing embodiments, and in conjunction with reference to Figures 1 to 3 The third opening j2 and the fifth opening j3 are both connected to the first channel P1, and the fourth opening c2 and the sixth opening c3 are both connected to the second channel P2.

[0212] For example, in conjunction with reference Figures 1 to 3 , Figures 20 to 21 At the same time, refer to Figure 22 , Figure 22 This is a schematic diagram of the airflow direction of the energy storage electrical cabinet 100 in some embodiments of this application. Figure 22The dashed arrows roughly indicate the airflow direction. For example, after the airflow enters the first channel P1, part of the airflow flows into the first chamber Q1 through the first opening j1 and flows out to the second channel P2 through the second opening c1; another part of the airflow flows into the second chamber Q2 through the third opening j2 and flows out to the second channel P2 through the fourth opening c2; yet another part of the airflow flows into the fourth chamber Q4 through the fifth opening j3 and flows out to the second channel P2 through the sixth opening c3.

[0213] Thus, by utilizing the cavity wall of the first receiving cavity 201 and the outer wall of the energy storage electrical cabinet 100 to form the first channel P1 and the second channel P2, a heat dissipation airflow that can improve heat dissipation can be formed within a confined space. This is beneficial to improving the reliability of each component within the energy storage electrical cabinet 100, and consequently, to improving the reliability of the energy storage system 10. Since the energy storage system 10 includes the aforementioned energy storage electrical cabinet 100, other advantages can be understood by referring to the advantages possessed by the aforementioned energy storage electrical cabinet 100, and will not be elaborated here.

[0214] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 , Figures 17 to 21 The first channel P1 is configured as the air inlet channel, and the second channel P2 is configured as the air return channel.

[0215] This allows for the heat dissipation methods illustrated in some of the aforementioned embodiments. For example, the airflow first passes through the AC protection module 130 and the second DC protection submodule 142, then through the first DC protection submodule 141, and subsequently through the power conversion module 120. The advantages are illustrated in the aforementioned embodiments, and no specific limitations are made here.

[0216] Of course, in some other embodiments, the first channel P1 can be configured as an air inlet channel and the second channel P2 can be configured as an air outlet channel. No specific limitations are made here.

[0217] Based on some embodiments of this application, please continue to refer to Figure 18 and Figure 19 The housing 200 also has a second receiving cavity 202 arranged side by side with the first receiving cavity 201, and the energy storage system 10 also includes a liquid cooling unit 300 disposed in the second receiving cavity 202.

[0218] For example, with Figure 17 and Figure 18 For example, the first receiving cavity 201 and the second receiving cavity 202 are arranged side by side along the first direction F1. It can be understood that "side by side" means that the first receiving cavity 201 and the second receiving cavity 202 are arranged in the same direction, overlapping in the arrangement direction, but not overlapping in the non-arrangement direction.

[0219] This arrangement allows the energy storage electrical cabinet 100 and the liquid cooling unit 300 to be set up side by side, which in turn helps to increase the size design space of the liquid cooling unit 300 in the side-by-side direction.

[0220] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 , Figure 18 and Figure 19 and in conjunction with reference Figure 23 and Figure 24 , Figure 23 This is a schematic diagram of the structure of the battery cluster 400 in some embodiments of this application. Figure 24 The diagram illustrates the electrical connections of the energy storage system 10 in some embodiments of this application. The enclosure 200 further includes a third receiving cavity 203. The energy storage system 10 also includes at least one battery cluster 400 disposed within the third receiving cavity 203 and at least one energy storage converter 500 disposed outside the enclosure 200. The at least one battery cluster 400 and the at least one energy storage converter 500 are connected via an energy storage electrical cabinet 100.

[0221] Battery cluster 400 is an independently operating high-voltage battery unit. Battery cluster 400 typically includes battery modules, a cluster management unit, and a high-voltage box 410. For example, using... Figure 23 For example, the diagram illustrates a scenario where the bottom component of the battery cluster 400 is the high-voltage box 410, and the top component of the high-voltage box 410 is the battery module.

[0222] For example, in conjunction with reference Figure 14 The energy storage electrical cabinet 100 also includes a conductive component 180 disposed in the cabinet 110 and a connector assembly 190 disposed on the conductive component 180. One end of the conductive component 180 is connected to the energy storage converter 500, and the other end of the conductive component 180 is connected to the high voltage box 410 of the battery cluster 400. The connector assembly 190 is connected to the DC protection module 140.

[0223] Thus, by placing the energy storage converter 500 outside the enclosure 200, it is not only beneficial to improve the heat dissipation of the energy storage converter 500, but also to improve the maintainability and scalability of the energy storage converter 500.

[0224] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 , Figure 18 , Figure 19 , Figure 23 and Figure 24 The at least one battery cluster 400 includes multiple battery clusters 400, and the at least one energy storage converter 500 includes multiple battery clusters 400. The multiple battery clusters 400 and the multiple energy storage converters 500 are arranged in a one-to-one correspondence.

[0225] For example, in conjunction with reference Figure 14The conductive component 180 includes multiple conductive elements. The battery cluster 400, the energy storage converter 500, and the conductive elements are arranged in a one-to-one correspondence, and the conductive elements are connected to the high-voltage box 410 of the corresponding battery cluster 400 and the corresponding energy storage converter 500.

[0226] Thus, by arranging the battery clusters 400 and energy storage converters 500 in a one-to-one correspondence, a string connection can be formed. This not only isolates the faulty battery cluster 400 or energy storage converter 500 in the event of a fault, but also improves the system's expansion flexibility and safety redundancy, thereby enhancing the reliability, available capacity, service life, and ease of operation and maintenance of the energy storage system 10. It is understood that the use of the energy storage electrical cabinet 100 illustrated in some of the above embodiments is beneficial for improving the energy density and reliability of the energy storage system 10, and thus also facilitates the expansion of the energy storage system 10.

[0227] According to some embodiments of this application, please refer to Figure 25 , Figure 25 This is a schematic diagram of the electrical connection of an energy storage system 10a in some other embodiments of this application. The at least one battery cluster is provided with multiple clusters. The energy storage system 10a includes at least one energy storage converter group 50. Each energy storage converter group 50 includes multiple energy storage converters. The number of the multiple battery clusters corresponding to the energy storage converter group 50 is the same as the number of the multiple energy storage converters in the energy storage converter group 50.

[0228] For example, the energy storage electrical cabinet 100a and the battery cluster are housed inside the enclosure 200a, while the energy storage converter group 50 is located outside the enclosure 200a. (Refer to reference...) Figure 14 The conductive component 180 includes multiple conductive elements. Battery clusters and conductive elements are arranged in a one-to-one correspondence. The number of conductive elements corresponding to the energy storage converter group 50 is the same as the number of energy storage converters within the energy storage converter group 50. The conductive elements connect the high-voltage box 410a of the corresponding battery cluster to the corresponding energy storage converter group 50.

[0229] In this way, by setting up energy storage converter group 50 to form a string connection, it is possible to achieve flexible expansion of power and capacity, significantly improve system redundancy and fault isolation capability, and at the same time take into account high-power centralized control and refined management of battery clusters, thereby improving the safety, reliability and service life of energy storage system 10.

[0230] According to some embodiments of this application, the at least one energy storage converter group 50 includes two energy storage converter groups 50, each energy storage converter group 50 including four energy storage converters; or, the at least one energy storage converter group 50 includes one energy storage converter group 50, the energy storage converter group 50 including eight energy storage converters.

[0231] Thus, through the flexible grouping architecture shown above, the redundancy level and integration method can be flexibly selected according to the actual application scenario while keeping the total output power unchanged. This can achieve both group redundancy and high reliability operation, as well as high integration and simplified layout, thereby improving the adaptability, reliability, maintainability and scalability of the energy storage system 10.

[0232] Based on some embodiments of this application, please continue to refer to Figure 17 and Figure 18 The energy storage system 10 also includes an air intake device 600, which is located outside the housing 200. The air outlet of the air intake device 600 is connected to the first channel P1, and the return air outlet of the air intake device 600 is connected to the second channel P2.

[0233] The air intake device 600 refers to a powered ventilation device that actively delivers airflow to the first channel P1 and forms an air path, used to provide temperature-controlled airflow inside the enclosure 200. For example, the air intake device 600 can be a fan, an air conditioner indoor unit fan module, or other components, without specific limitations.

[0234] Thus, by installing the air intake device 600 outside the enclosure 200, not only is no space occupied inside the enclosure, but a circulating air duct can also be formed, resulting in more stable airflow and improved heat dissipation efficiency. In addition, the failure, maintenance, and replacement of the air intake device 600 do not affect the operation of the internal components, making the maintenance of the air intake device 600 safer and more convenient.

[0235] According to some embodiments of this application, the energy storage system 10 provided in the embodiments of this application also includes other functional components such as fire protection system and liquid cooling system, which are not specifically limited here.

[0236] It should be noted that the energy storage system provided in this application embodiment is suitable for long-term energy storage. Its three-dimensional layout and modular design of internal components enable stable charging and discharging operation for 4 hours, 8 hours, or even longer, meeting the stringent requirements of high-capacity energy storage applications for structural stability and electrical connection durability. In particular, by using the layout of the energy storage electrical cabinet 100 provided in this application embodiment, the thermal stability of key components under long-term continuous operation is effectively improved, reducing the risk of performance degradation or failure due to overheating, thereby providing strong support for the reliable operation of the long-term energy storage system. For example, the installed capacity of the energy storage system provided in this application embodiment can be 5.0 MWh or more. For instance, the installed capacity can be from 5.0 MWh to 7.5 MWh, such as any one of 5.5 MWh, 6.0 MWh, 6.25 MWh, 6.5 MWh, and 7.0 MWh. Of course, other higher installed capacities are also possible, and no specific limitations are made here.

[0237] The aforementioned energy storage system can be used in electrical equipment. Electrical equipment refers to various devices, apparatuses, or systems that use electricity as their driving energy source and rely on a power supply to perform their functions. Electrical equipment covers a wide range, including but not limited to industrial production equipment, commercial office equipment, residential appliances, and infrastructure systems. Depending on the application scenario, electrical equipment has different requirements for the quality, reliability, and continuity of power. By integrating an energy storage system into electrical equipment, the system can charge during off-peak hours and discharge during peak hours, achieving peak shaving and valley filling to reduce electricity costs; it can also serve as a backup power source during grid failures, ensuring uninterrupted operation of critical loads. This electrical equipment is suitable for various application scenarios such as industry, commerce, and communications, and through intelligent management, it achieves a comprehensive improvement in energy efficiency and economy.

[0238] The connection of the energy storage system provided in this application embodiment is illustrated below with reference to the situations shown in some of the above embodiments, but it is not limited thereto.

[0239] For example, please refer to Figures 1 to 3 , Figure 15 and in conjunction with reference Figure 17 , Figure 18 , Figure 23 and Figure 24 First, the components within the fourth chamber Q4 of cabinet 110 will be described. The power distribution protection module X has a first connection terminal and a second connection terminal on one side along the first direction F1. The first connection terminal of the power distribution protection module X is connected to terminal block R, which is connected to an external wiring component. The second connection terminal of the power distribution protection module X is connected to an AC fuse. The power distribution protection module X has a third connection terminal on the other side along the first direction F1, which is connected to the power conversion module 120.

[0240] Next, the components within the third chamber Q3 of cabinet 110 will be described. The signal switching and interconnection module S1 is connected to the fire protection system and energy storage converter of the energy storage system 10. The communication switching module W is connected to the high-voltage box 410 of the battery cluster 400. The power supply module and miniature circuit breaker in the functional module S2 are connected to the signal switching and interconnection module S1.

[0241] Next, the components within the first chamber Q1 of cabinet 110 are described. The first DC fuse module 1411 and the second DC fuse module 1421 are respectively connected to the connector assembly 190 on the conductive component 180. The first DC fuse module 1411 is connected to the first DC surge module 1412, which is connected to the first grounding component 170. The second DC fuse module 1421 is connected to the second DC surge module 1422, which is connected to the first grounding component 170. The AC fuse module 131 is connected to the AC surge module 132, which is then connected to the first grounding component 170. The power conversion module 120 is connected to the liquid-cooled unit 300 via a wiring connector.

[0242] Finally, the components within the fourth chamber Q4 of cabinet 110 are described. One end of conductive component 180 is connected to energy storage converter 500, and the other end is connected to the high-voltage box 410 of battery cluster 400. Wiring components on conductive component 180 are used to supply power to the first DC surge module 1412 and the second DC surge module 1422. Power distribution component T1 connects to any phase on terminal block R, which can assist in forming a single-phase power supply circuit for connecting electrical components requiring single-phase connection. First grounding component 170 and terminal block R are both connected to second grounding component T2, which is configured as the grounding output of energy storage electrical cabinet 100. Other components in energy storage electrical cabinet 100 that require grounding can be connected to second grounding component T2. Conductive connector T3 is used to connect power conversion module 120 and liquid cooling unit 300. It is understood that second grounding component T2 and power distribution component T1 are optional modules and can be used according to the relevant electrical components and wiring conditions.

[0243] It should be noted that, in Figures 1 to 3 , Figure 15 In the illustrated scenario, the positions of the first chamber Q1, the second chamber Q2, the third chamber Q3, the fourth chamber Q4, and the fifth chamber Q5 are indicated as needed.

[0244] As can be seen from the above wiring diagram, the layout of the energy storage electrical cabinet 100 provided in this application embodiment is more compact, and each space can be effectively utilized. It can not only take into account the heat dissipation and energy density mentioned above, but also facilitate the arrangement and maintenance, thereby achieving a comprehensive improvement in performance in terms of maintenance, heat dissipation, safety and stability.

[0245] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0246] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An energy storage electrical cabinet, characterized in that, include: The cabinet has a first chamber and a first opening and a second opening, both of which are connected to the first chamber. The power conversion module is located in the first chamber; and An AC protection module and a DC protection module are located in the first chamber; the DC protection module includes a first DC protection submodule and a second DC protection submodule. The AC protection module and the second DC protection submodule are both located near the first opening, the power conversion module is located near the second opening, and the first DC protection submodule is located between the AC protection module and the second DC protection submodule and the power conversion module.

2. The energy storage electrical cabinet according to claim 1, characterized in that, The cabinet has a first side and a second side arranged opposite to each other along a first direction, the first opening is located on the first side, and the second opening is located on the second side.

3. The energy storage electrical cabinet according to claim 2, characterized in that, The second DC protection submodule and the AC protection module are located on the first side, and the power conversion module is located on the second side; Along the first direction, the first DC protection submodule is located between the second DC protection submodule and the AC protection module and the power conversion module.

4. The energy storage electrical cabinet according to any one of claims 1-3, characterized in that, The energy storage electrical cabinet has a first mode; In the first mode, the first opening is used for air intake, and the second opening is used for air exhaust.

5. The energy storage electrical cabinet according to any one of claims 1-3, characterized in that, The energy storage electrical cabinet also includes mounting components disposed within the first chamber; The mounting component is detachably connected to the cabinet, and the first DC protection submodule is installed on the mounting component.

6. The energy storage electrical cabinet according to claim 5, characterized in that, The first DC protection submodule includes a first DC fuse module and a first DC surge module; Along the direction from the top side of the mounting component to the bottom side of the mounting component, the first DC fuse module and the first DC surge module are staggered; along the second direction, the first DC fuse module and the first DC surge module are staggered. The arrangement directions of the second DC protection submodule and the AC protection module and the power conversion module, the second direction and the direction from the top side of the mounting component to the bottom side of the mounting component intersect each other.

7. The energy storage electrical cabinet according to claim 6, characterized in that, Along the direction from the top side to the bottom side of the mounting component, the first DC fuse module and the first DC surge module are spaced apart, with the first DC surge module located on the bottom side of the first DC fuse module; and / or Along the second direction, the first DC fuse module and the first DC surge module are spaced apart; the first DC surge module is located on one side of the operating side of the first DC fuse module, and the operating side of the first DC surge module is opposite to the first DC fuse module.

8. The energy storage electrical cabinet according to claim 5, characterized in that, The energy storage electrical cabinet also includes a latching component disposed in the first chamber. The latching component is disposed on one side of the mounting component along the second direction, and the latching component is engaged with the mounting component. The arrangement directions of the second DC protection submodule and the AC protection module and the power conversion module, the second direction and the direction from the top side of the mounting component to the bottom side of the mounting component intersect each other.

9. The energy storage electrical cabinet according to claim 8, characterized in that, The cabinet has a third side and a fourth side disposed opposite to each other along the second direction; the fastener has a first end near the third side and a second end near the fourth side; The first end is connected to the cabinet body, the second end is located on the top side of the first end, the second end is warped away from the first end, and the second end is engaged with the mounting component.

10. The energy storage electrical cabinet according to claim 9, characterized in that, The fastener includes a first extension section, a connecting section, and a second extension section; The first extension segment extends along the second direction and connects to the cabinet body, one end of the first extension segment along the second direction is the first end, and the other end of the first extension segment along the second direction is connected to the connecting segment. The connecting segment extends in a direction away from the top side of the first extension segment, and the second extension segment is connected to the end of the connecting segment away from the first extension segment. The end of the second extension segment away from the connecting segment is the second end.

11. The energy storage electrical cabinet according to claim 10, characterized in that, The second extension includes a main body portion connected to the connecting section, and a second end portion connected to the main body portion; the main body portion extends along a predetermined direction from the third side to the fourth side; the predetermined direction is angled to the second direction; the end of the main body portion closer to the fourth side is closer to the first extension portion than the end of the main body portion closer to the third side; and / or The connecting segment extends along the top side of the mounting member toward the bottom side of the mounting member; and / or The fastener further includes a first arc transition section, and the connecting section and the first extension section are connected through the first arc transition section; and / or The fastener further includes a second arc transition section, and the connecting section and the second extension section are connected through the second arc transition section; and / or The fastener is a one-piece molded part.

12. The energy storage electrical cabinet according to claim 5, characterized in that, The mounting component includes a base, a first mounting part, a bent part, and a second mounting part; The first mounting portion is located on the bottom side of the base, the bending portion is located on the top side of the base, the first mounting portion and the bending portion are both located on the same side of the base along the second direction, and the second mounting portion is located on the side of the bending portion that is opposite to the base and opposite to the first mounting portion. A portion of the first DC protection submodule is disposed in the first mounting portion, and another portion of the first DC protection submodule is disposed in the second mounting portion; The arrangement directions of the second DC protection submodule and the AC protection module and the power conversion module, the second direction and the direction from the top side of the mounting component to the bottom side of the mounting component intersect each other.

13. The energy storage electrical cabinet according to claim 12, characterized in that, The energy storage electrical cabinet also includes a first grounding component; The first grounding component is located at the first mounting part. The AC protection module and the DC protection module are both connected to the first grounding component. The bent part is provided with a clearance hole that is opposite to the first grounding component.

14. The energy storage electrical cabinet according to claim 12, characterized in that, The mounting component is a one-piece molded part; and / or At least one of the base, the first mounting portion, the bent portion, and the second mounting portion is provided with a weight-reducing hole; and / or The mounting component further includes a plurality of reinforcing portions, a portion of which is connected between the bent portion and the first mounting portion, and another portion of which is connected between the bent portion and the second mounting portion; and / or At least one of the base and the first mounting part is detachably connected to the cabinet.

15. The energy storage electrical cabinet according to any one of claims 1-3, characterized in that, The cabinet also has a second chamber, and a third opening and a fourth opening, both of which are connected to the second chamber; the second chamber is located on the bottom side of the first chamber; The energy storage electrical cabinet also includes a conductive component disposed in the second chamber and a connector assembly disposed on the conductive component. One end of the conductive component is used to connect to the energy storage converter, and the other end of the conductive component is used to connect to the high voltage box of the battery cluster. The connector assembly is connected to the DC protection module.

16. The energy storage electrical cabinet according to claim 15, characterized in that, The cabinet includes a partition disposed in the second chamber, the partition dividing the second chamber into a first sub-cavity and a second sub-cavity, both the first sub-cavity and the second sub-cavity being connected to the third opening and also to the fourth opening; The conductive component and the connector component are located in the first sub-cavity, and the energy storage electrical cabinet also includes an auxiliary connection module located in the second sub-cavity.

17. The energy storage electrical cabinet according to claim 16, characterized in that, The auxiliary connection module includes a power distribution component, which is used to assist in forming a single-phase power supply circuit; and / or The auxiliary connection module includes a second grounding component, which is configured as a grounding output component of the energy storage electrical cabinet; and / or The auxiliary connection module includes a conductive connector, which is used to connect the power conversion module and the liquid cooling unit.

18. The energy storage electrical cabinet according to any one of claims 1-3, characterized in that, The cabinet also has a third chamber, which is located on the top side of the first chamber; The energy storage electrical cabinet also includes a monitoring signal storage device, a signal conversion and interconnection module, and a communication conversion module, all located within the third chamber. The monitoring signal storage device is located on the bottom wall of the third chamber, and the signal conversion and interconnection module and the communication conversion module are located on opposite sides of the monitoring signal storage device.

19. The energy storage electrical cabinet according to claim 18, characterized in that, The cabinet also has a fourth chamber, and a fifth opening and a sixth opening, both of which are connected to the fourth chamber; The fourth chamber is located on the top side of the third chamber. The energy storage electrical cabinet also includes a power distribution protection module located in the fourth chamber. One end of the power distribution protection module is connected to the power conversion module, and the other end of the power distribution protection module is connected to the AC protection module.

20. An energy storage system, characterized in that, include: The housing has a first receiving cavity; and The energy storage electrical cabinet as described in any one of claims 1-19 is disposed within the first receiving cavity; The cavity wall of the first receiving cavity and the outer wall of the energy storage electrical cabinet define a first channel and a second channel, the first channel being connected to the first opening and the second channel being connected to the second opening.

21. The energy storage system according to claim 20, characterized in that, The first channel is configured as an air intake channel, and the second channel is configured as a return air channel.

22. The energy storage system according to claim 20 or 21, characterized in that, The enclosure also has a second receiving cavity arranged side by side with the first receiving cavity, and the energy storage system further includes a liquid cooling unit disposed in the second receiving cavity.

23. The energy storage system according to claim 20 or 21, characterized in that, The enclosure also has a third receiving cavity, and the energy storage system further includes at least one battery cluster disposed in the third receiving cavity and at least one energy storage converter disposed outside the enclosure; The at least one battery cluster and the at least one energy storage converter are connected through the energy storage electrical cabinet.

24. The energy storage system according to claim 23, characterized in that, The at least one battery cluster includes multiple battery clusters, and the at least one energy storage converter includes multiple energy storage converters; The multiple battery clusters and the multiple energy storage converters are arranged in a one-to-one correspondence.

25. The energy storage system according to claim 23, characterized in that, The at least one battery cluster includes multiple battery clusters, and the energy storage system includes at least one energy storage converter group, each energy storage converter group including multiple energy storage converters; The number of the plurality of battery clusters corresponding to the energy storage converter group is the same as the number of the plurality of energy storage converters within the energy storage converter group.

26. The energy storage system according to claim 25, characterized in that, The at least one energy storage converter group includes two energy storage converter groups, and each energy storage converter group includes four energy storage converters; or The at least one energy storage converter group includes an energy storage converter group, and the energy storage converter group includes eight of the energy storage converters.

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