Modular switchgear and energy storage system

Abstract

The utility model discloses a modularized confluence cabinet and energy storage system relates to energy storage technical field, this modularized confluence cabinet includes: power distribution module, including power distribution cabinet body and the power distribution device group of being located at its inside, confluence module, including confluence cabinet body and the confluence device group of being located at its inside, and the width of confluence cabinet body and the width of power distribution cabinet body are not equal, wherein, power distribution cabinet body and confluence cabinet body can be arranged in the up and down of height direction, and the opposite first end of two can be detachably connected together, and the cable electric signal connection through power distribution wiring hole no.1 and confluence wiring hole no.1 between power distribution device group and confluence device group, and power distribution cabinet body and confluence cabinet body leave the space for avoiding in width direction, for accommodating other components in energy storage container. This modularized confluence cabinet adopts modularization design, realizes single module and can be mass-produced respectively, does not interfere with each other, and saves the internal space of energy storage container to add battery module, improves energy storage system energy density.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and more specifically, to a modular combiner cabinet. Furthermore, this utility model also relates to an energy storage system including the aforementioned modular combiner cabinet. Background Technology

[0002] The combiner cabinet is the core equipment in an energy storage system. It is located between the battery pack and the energy storage inverter and is responsible for collecting, distributing, and protecting electrical energy.

[0003] Conventional combiner cabinets adopt an integrated cabinet structure, with the power distribution section and the combiner section integrated vertically. The combiner section mainly contains larger components such as busbars, circuit breakers, and power harnesses to achieve current collection; the power distribution section mainly contains smaller components such as controllers, air switches, Hall current sensors, and uninterruptible power supplies, and has ample space to achieve power distribution and system protection functions.

[0004] In the process of realizing this invention, the inventors discovered that conventional combiner cabinets have at least the following drawbacks:

[0005] (1) The busbar and the distribution unit are integrated in one cabinet. When the components of the distribution unit or the busbar are replaced, new models need to be generated, resulting in a wide variety of products, which is not conducive to product inventory and mass production.

[0006] (2) The utilization rate of the width dimension of the power distribution section is low, and the volume of the combiner cabinet is large, which is not conducive to improving the energy density of the energy storage system.

[0007] (3) The power distribution section and the junction section can only be arranged vertically. The junction cabinet is relatively tall and fixed, and cannot be dynamically adjusted according to the internal arrangement of the energy storage container.

[0008] Therefore, how to solve any of the above-mentioned shortcomings of conventional combiner cabinets is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0009] In view of this, the purpose of this utility model is to provide a modular combiner cabinet that realizes modular design of power distribution and current combining. The power distribution module and the current combining module can be mass-produced separately without interfering with each other. Moreover, the widths of the power distribution module and the current combining module are not equal, which can leave space to accommodate more battery modules and improve the energy density of the energy storage system.

[0010] Another objective of this invention is to provide an energy storage system including the aforementioned modular combiner cabinet.

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] A modular combiner unit, located inside an energy storage container, includes:

[0013] A power distribution module includes a power distribution cabinet and a group of power distribution devices disposed therein. The power distribution cabinet has a power distribution mounting part and a power distribution wiring hole at its first end along the height direction.

[0014] A busbar module includes a busbar cabinet and a busbar device group disposed therein. The first end of the busbar cabinet along the height direction is provided with a busbar mounting part and a busbar routing hole that are detachably connected to the power distribution mounting part. The width of the busbar cabinet is not equal to the width of the power distribution cabinet.

[0015] The power distribution cabinet and the busbar cabinet can be stacked vertically along the height direction, and their opposite first ends can be detachably connected together. The power distribution device group and the busbar device group are connected by electrical signals through the power distribution wiring hole and the busbar wiring hole. The power distribution cabinet and the busbar cabinet have clearance space in the width direction to accommodate other components inside the energy storage container.

[0016] Preferably, the power distribution cabinet and the busbar cabinet are stacked together from top to bottom, the width of the power distribution cabinet is smaller than the width of the busbar cabinet, and a gap is left between the power distribution cabinet and the busbar cabinet on the same side along the width direction to form the clearance space above the first end of the busbar cabinet.

[0017] Preferably, the first end of the junction box is divided into two installation areas along the width direction. The first junction box installation part and the first junction box wiring hole are located in the first installation area. The width of the first installation area is the same as the width of the distribution cabinet for the installation of the distribution cabinet. The second installation area is provided with an installation part for the detachable installation of other components.

[0018] Preferably, the second installation area is used to install a fire cylinder assembly, which includes a base, a fire cylinder, and clamps. The base plate is provided with a second installation part that is detachably connected to the first installation part. The fire cylinder is mounted on the side plate of the base and is vertically installed via several clamps.

[0019] Preferably, the bottom of the junction cabinet is provided with a junction installation part two, which is detachably mounted on the inner wall of the energy storage container.

[0020] Preferably, the power distribution cabinet has a second power distribution cable routing hole on its first side along the width direction, and the busbar cabinet has a second busbar cable routing hole on its first side along the width direction. The power distribution cabinet and the busbar cabinet can be arranged side by side along the width direction, with their opposite first sides pressed together. The power distribution device group and the busbar device group are connected by electrical signals through cables passing through the second power distribution cable routing hole and the second busbar cable routing hole.

[0021] Preferably, the first power distribution installation part is detachably mounted on the inner wall of the energy storage container, and the bottom of the junction cabinet is provided with a second junction installation part, which is detachably mounted on the inner wall of the energy storage container.

[0022] Preferably, both the second power distribution cable hole and the second busbar cable hole are provided with blind hole guard coils made of rubber, and the blind hole guard coils are provided with cross-shaped gaps in the middle.

[0023] Preferably, the power distribution device group includes external control devices, and the power distribution cabinet has a recessed panel structure on one side along the thickness direction, with the control devices disposed on the panel structure.

[0024] An energy storage system includes an energy storage container and a modular combiner cabinet as described above, disposed inside the energy storage container.

[0025] The modular combiner cabinet provided by this utility model adopts a modular design for both the power distribution section and the combiner section. The power distribution cabinet contains a group of power distribution devices for power distribution and system protection functions, forming an independent power distribution module. The combiner cabinet contains a group of combiner devices for current collection, forming an independent combiner module. Connecting the power distribution mounting section on the power distribution cabinet and the combiner cabinet allows the power distribution cabinet and combiner cabinet to be stacked vertically and detachably connected. Cables can pass through the power distribution wiring hole and the combiner wiring hole to connect the power distribution device group and the combiner device group, enabling current transfer and signal interaction between the power distribution module and the combiner module. This allows the combiner cabinet to be arranged with two independent power distribution modules and combiner modules within an energy storage container. Each module can be mass-produced independently without interference. The power distribution modules and combiner modules can be combined in various ways, reducing the number of combiner cabinet models, saving costs, and facilitating combiner cabinet inventory and mass production.

[0026] In addition, the unequal width design of the junction box and the power distribution box allows them to be staggered in the width direction during assembly inside the energy storage container, leaving clearance space. Other components (such as fire-fighting gas cylinder components) can be placed in the clearance space, making the components inside the energy storage container compactly arranged, thereby accommodating more battery modules and improving the energy density of the energy storage system. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 A schematic diagram of an energy storage system provided in this application;

[0029] Figure 2 An installation diagram of the modular combiner cabinet embodiment 1 and the fire cylinder assembly provided in this application;

[0030] Figure 3 for Figure 2 A schematic diagram of the power distribution module from one perspective;

[0031] Figure 4 for Figure 2 A schematic diagram of the power distribution module from another perspective;

[0032] Figure 5 for Figure 2 The diagram shown is a structural schematic of the bus module.

[0033] Figure 6 for Figure 2 The diagram shows the structure of the fire-fighting gas cylinder assembly.

[0034] Figure 7 This is a structural schematic diagram of Embodiment 2 of the modular combiner cabinet provided in this application;

[0035] Figure 8 for Figure 7 A partial exploded view of the structure shown.

[0036] Figure label:

[0037] 1-Power distribution module; 11-Power distribution cabinet; 111-Power distribution installation part one; 112-Power distribution wiring hole two; 113-Panel structure; 12-Control electrical components;

[0038] 2-Bus unit module; 21-Bus unit cabinet; 211-Bus unit mounting section one; 212-Bus unit cabling hole one; 213-Bus unit mounting section two; 214-Bus unit cabling hole two; 215-Mounting section one;

[0039] 3-Blind hole guard coil; 31-Cross-shaped slot;

[0040] 4-Energy storage container;

[0041] 5-Fire gas cylinder assembly; 51-Base; 511-Installation part two; 52-Fire gas cylinder; 53-Clamping clamp;

[0042] 6-Fire protection piping components. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] The core of this utility model is to provide a modular combiner cabinet. This modular combiner cabinet realizes the modular design of power distribution and current combining. The power distribution module and the current combining module can be mass-produced separately without interfering with each other. Moreover, the widths of the power distribution module and the current combining module are not equal, which can leave space to accommodate more battery modules and improve the energy density of the energy storage system.

[0045] Another core aspect of this invention is to provide an energy storage system that includes the aforementioned modular combiner cabinet.

[0046] It should be noted that in this embodiment, the orientation or positional relationship indicated by "up", "down", "left", "right", "front", "back", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on this application.

[0047] Please refer to Figure 1 and Figure 2 This application provides an embodiment of a modular combiner cabinet located inside an energy storage container 4, which includes a power distribution module 1 and a combiner module 2.

[0048] The power distribution module 1 includes a power distribution cabinet 11 and a power distribution device group located inside it. The first end of the power distribution cabinet 11 along the height direction is provided with a power distribution installation part 111 and a power distribution wiring hole.

[0049] The combiner module 2 includes a combiner cabinet 21 and a combiner device assembly disposed therein. The first end of the combiner cabinet 21 along the height direction is provided with a combiner mounting part 211 and a combiner cable routing hole 212 (e.g., detachably connected to the power distribution mounting part 111) and a combiner cable routing hole 212. Figure 5 As shown in the figure, the width of the junction box 21 is not equal to the width of the distribution box 11.

[0050] The power distribution cabinet 11 and the busbar cabinet 21 can be stacked vertically along the height direction, and their opposite first ends can be detachably connected together. The power distribution device group and the busbar device group are connected by electrical signals through the power distribution wiring hole 1 and the busbar wiring hole 212. The power distribution cabinet 11 and the busbar cabinet 21 leave clearance space in the width direction to accommodate other components inside the energy storage container 4.

[0051] It should be noted that the power distribution device group mainly includes smaller electrical components such as control devices, air switches, Hall current sensors, and uninterruptible power supplies. The connection relationship between the components can refer to the existing technology and they are installed in the power distribution cabinet 11. The installation method can also refer to the existing technology. Neither of these is the focus of this application's improvement and will not be described in detail.

[0052] The busbar assembly mainly includes larger electrical components such as busbars, circuit breakers, and power harnesses. Similarly, the connection relationships between the components can refer to existing technologies and are installed in the busbar cabinet 21. The installation method can also refer to existing technologies. Neither of these is the focus of this application's improvement and will not be described in detail.

[0053] The modular combiner cabinet in the above embodiment has a modular design for power distribution and combiner, and is divided into power distribution module 1 and combiner module 2. The connection between the power distribution mounting part 111 on the power distribution cabinet 11 and the busbar mounting part 211 on the busbar cabinet 21 allows the power distribution cabinet 11 and the busbar cabinet 21 to be stacked vertically along the height direction and detachably connected together. Cables can pass through the power distribution wiring hole 1 and the busbar wiring hole 212 to connect the power distribution device group and the busbar device group, realizing current transmission and signal interaction between the power distribution module 1 and the busbar module 2. This allows the busbar cabinet to be arranged in the energy storage container 4 with two independent power distribution modules 1 and busbar modules 2. Each module can be mass-produced independently without interference. The power distribution module 1 and the busbar module 2 can be combined in various ways, reducing the number of busbar cabinet models. In this way, when replacing power distribution devices or busbar devices, it is not necessary to generate a new model of busbar cabinet. Only a single module needs to be replaced, saving costs and facilitating the stocking and mass production of busbar cabinets.

[0054] In addition, the unequal width design of the junction cabinet 21 and the power distribution cabinet 11 allows them to be staggered in the width direction when assembled in the energy storage container 4, leaving clearance space. Other components (such as fire cylinder assembly 5) can be placed in the clearance space, making the components in the energy storage container 4 compactly arranged, thereby accommodating more battery modules and improving the energy density of the energy storage system.

[0055] In one specific embodiment, please refer to Figure 3 and Figure 5Both the power distribution installation section 111 and the busbar installation section 211 are equipped with mounting holes, and the two are connected together by fasteners (bolts or screws), that is, the power distribution cabinet 11 and the busbar cabinet 21 are detachably connected by a threaded connection. This connection method has a simple structure, is easy to process and manufacture, and can ensure the stability of the connection between the two cabinets through pre-tightening force, thereby ensuring the structural stability of the busbar cabinet.

[0056] In another specific embodiment, the power distribution installation part 111 and the busbar installation part 211 are respectively two snap-fit ​​fasteners or clamps, that is, the power distribution cabinet 11 and the busbar cabinet 21 are detachably connected by snap-fit ​​or clamp connection. This connection method allows for faster installation and improves the convenience of disassembling and assembling the two cabinets, thereby facilitating manual replacement or maintenance of modules later.

[0057] Preferably, multiple power distribution installation units 111 and multiple busbar installation units 211 are provided, and the two are arranged in a one-to-one correspondence in the height direction, which can improve the firmness of the connection between the power distribution cabinet 11 and the busbar cabinet 21, thereby effectively ensuring the structural stability of the busbar cabinet.

[0058] In addition, multiple power distribution wiring holes and busbar wiring holes 212 are provided, and the two are set one-to-one in the height direction to adapt to complex wiring schemes between power distribution device groups and busbar device groups, thereby improving wiring flexibility.

[0059] It should be noted that the above-mentioned power distribution module 1 and combiner module 2 are stacked vertically along the height direction to form a modular combiner cabinet embodiment one.

[0060] Based on the above embodiment one, and considering the specific stacking positions of the distribution cabinet 11 and the junction cabinet 21, as a preferred option, please refer to... Figure 2 The power distribution cabinet 11 and the busbar cabinet 21 are stacked together from top to bottom. The width of the power distribution cabinet 11 is smaller than the width of the busbar cabinet 21. There is a gap between the power distribution cabinet 11 and the busbar cabinet 21 on the same side along the width direction to form a clearance space above the first end of the busbar cabinet 21.

[0061] The first end of the power distribution cabinet 11 is its bottom, and the first end of the combiner cabinet 21 is its top. The power distribution mounting part 111 at the bottom of the power distribution cabinet 11 connects to the combiner mounting part 211 at the top of the combiner cabinet 21, allowing the power distribution cabinet 11 to be mounted on top of the combiner cabinet 21, thus achieving a top-to-bottom stacked arrangement of the power distribution cabinet 11 and the combiner cabinet 21. It should be noted that the combiner unit group is heavier than the power distribution unit group. Placing the combiner cabinet 21 below the power distribution cabinet 11 avoids a top-heavy structure that could lead to instability. Furthermore, the battery module will be connected to the busbar inside the combiner cabinet 21 via a power harness. Placing the combiner cabinet 21 below the power distribution cabinet 11 prevents the power harness from becoming excessively long and tangled.

[0062] The width of the distribution cabinet 11 is smaller than the width of the busbar cabinet 21. When assembling the distribution cabinet 11 and the busbar cabinet 21, the distribution cabinet 11 and the busbar cabinet 21 are on the same side along the width direction (e.g., Figure 2 A gap is left between the right side of the junction box 21 and the top right side of the distribution cabinet 11, which is the clearance space. This arrangement ensures that when the junction box 21 is placed below the distribution cabinet 11, there is as much clearance space as possible to accommodate larger components.

[0063] Based on the above embodiment 1, as a further preferred embodiment, the first end of the junction box 21 is divided into two installation areas along the width direction. The junction installation part 211 and the junction wiring hole 212 are located in the first installation area. The width of the first installation area is the same as the width of the distribution cabinet 11 for the distribution cabinet 11 to be installed. The second installation area is provided with an installation part 215 for the detachable installation of other components.

[0064] The top of the junction box 21 is divided into two installation areas, such as... Figure 2 As shown, the width of the first installation area on the left is the same as the width of the distribution cabinet 11, allowing the left side of the distribution cabinet 11 to be installed close to the left side of the junction cabinet 21. This provides better space utilization and effectively ensures the accommodation of larger components (such as fire cylinder assembly 5). Furthermore, other components can be directly installed on the top of the junction cabinet 21, enabling the junction module 2 to simultaneously support the distribution module 1 and other components without the need for additional support structures. This rational layout saves costs.

[0065] Based on the above embodiment one, as a further preferred option, please refer to... Figure 2 , Figure 5 and Figure 6The second installation area is for installing fire cylinder assembly 5. Fire cylinder assembly 5 includes base 51, fire cylinder 52 and clamps 53. The base plate of base 51 is provided with installation part 2 511 which is detachably connected to installation part 1 215. Fire cylinder 52 is mounted on the side plate of base 51 and is vertically installed through several clamps 53.

[0066] It should be noted that fire-fighting gas cylinder assembly 5 is installed adjacent to the battery module inside the energy storage container 4 to deal with the fire risk of the battery module and ensure the safe operation of the energy storage system.

[0067] The fire-fighting gas cylinder assembly 5 includes a base 51, a fire-fighting gas cylinder 52, and clamps 53. Several clamps 53 are spaced along the height of the fire-fighting gas cylinder 52, each clamp 53 connecting to a side plate of the base 51. This allows the fire-fighting gas cylinder 52 to be mounted on the base 51, and the angle of the fire-fighting gas cylinder 52 can be adjusted during installation to ensure it is vertically positioned, saving space. The mounting part 511 on the bottom plate of the base 51 connects to the mounting part 215 on the top of the distribution cabinet 11, allowing the fire-fighting gas cylinder assembly 5 to be installed entirely on the top of the distribution cabinet 11. This results in a compact arrangement of the fire-fighting gas cylinder assembly 5 and the junction box, saving space and freeing up space for more battery modules, thus increasing the energy density of the energy storage system. It should be noted that a fire-fighting pipeline assembly 6 surrounds the fire-fighting gas cylinder assembly 5. The fire-fighting gas cylinder assembly 5 stores the extinguishing medium, and the fire-fighting pipeline assembly 6 transports the extinguishing medium.

[0068] In one specific embodiment, both mounting part 1 215 and mounting part 2 511 are provided with mounting holes, and the two are connected together by fasteners (bolts or screws), that is, the distribution cabinet 11 and the combiner cabinet 21 are detachably connected by a threaded connection. This connection method has a simple structure, is easy to process and manufacture, and can ensure the stability of the connection between the two cabinets by pre-tightening force, thereby ensuring the structural stability of the combiner cabinet.

[0069] In another specific embodiment, mounting part one 215 and mounting part two 511 are two snap-fit ​​buckles or clamps, respectively, that is, the distribution cabinet 11 and the combiner cabinet 21 are detachably connected by snap-fit ​​or clamp connection. This connection method allows for faster installation and improves the convenience of disassembling and assembling the two cabinets, thereby facilitating manual replacement or maintenance of modules later.

[0070] Preferably, multiple installation parts 215 and 511 are provided and are arranged in a one-to-one correspondence in the height direction, which can improve the firmness of the connection between the fire cylinder assembly 5 and the manifold 21, thereby effectively ensuring the structural stability of the fire cylinder assembly 5.

[0071] Based on the above embodiment one, as a further preferred option, please refer to... Figure 5 The bottom of the junction cabinet 21 is provided with a junction installation part 213, which is detachably installed on the inner wall of the energy storage container 4.

[0072] When the combiner cabinet 21 is placed below the distribution cabinet 11, the combiner cabinet 21 can be fixedly connected to the inner wall of the energy storage container 4 to securely install the combiner cabinet in the energy storage container 4.

[0073] In one specific embodiment, the second merging mounting part 213 is provided as a mounting hole, and the inner wall of the energy storage container 4 opposite to the second merging mounting part 213 is also provided with mounting holes. The two mounting holes can be connected together using fasteners (bolts or screws), that is, a threaded connection is used to achieve a detachable connection between the merging cabinet 21 and the energy storage container 4. This connection method has a simple structure, is easy to process and manufacture, and can ensure that the merging cabinet 21 is firmly and reliably installed and not easily loosened by pre-tightening force.

[0074] Please refer to Figure 7 and Figure 8 This application also provides a second embodiment of a modular combiner cabinet, specifically, the power distribution cabinet 11 is provided with a power distribution wiring hole 112 on the first side along the width direction, and the combiner cabinet 21 is provided with a combiner wiring hole 214 on the first side along the width direction. The power distribution cabinet 11 and the combiner cabinet 21 can be arranged side by side along the width direction, with their opposite first sides tightly attached to each other. The power distribution device group and the combiner device group are connected by electrical signals through cables passing through the power distribution wiring hole 112 and the combiner wiring hole 214.

[0075] Therefore, the power distribution module 1 and the combiner module 2 provided in this application have two arrangement methods: one is an up-and-down arrangement of the power distribution module 1 and the combiner module 2, and the other is a side-by-side arrangement of the power distribution module 1 and the combiner module 2. The combiner cabinet can be dynamically adjusted according to the internal layout of the energy storage container 4, which improves the adaptability and flexibility of the combiner cabinet installation. It should be noted that both arrangement methods of the power distribution module 1 and the combiner module 2 are compact and occupy little space, which can save internal space of the energy storage container 4, and is conducive to increasing battery modules and improving the energy density of the energy storage system.

[0076] Preferably, the distribution cabinet 11 is provided with power distribution wiring holes 112 on both sides along the width direction, and the busbar cabinet 21 is provided with busbar wiring holes 214 on both sides along the width direction. In this way, regardless of the front and back of the two cabinets in the thickness direction, as long as the two cabinets are arranged compactly side by side, the electrical components in the two cabinets can be wired, realizing the flexible side-by-side arrangement of the distribution cabinet 11 and the busbar cabinet 21, and further improving the flexibility of the busbar cabinet installation.

[0077] Based on the above-described embodiment two, as a further preferred embodiment, the power distribution installation part 111 is detachably mounted on the inner wall of the energy storage container 4, and the bottom of the combiner cabinet 21 is provided with a combiner installation part 213, which is also detachably mounted on the inner wall of the energy storage container 4. Thus, using the power distribution installation part 111 at the bottom of the power distribution cabinet 11, the power distribution cabinet 11 can be installed on the inner wall of the energy storage container 4, and using the combiner installation part 213 at the bottom of the combiner cabinet 21, the combiner cabinet 21 can be installed on the inner wall of the energy storage container 4, thereby securely installing the side-by-side power distribution cabinet 11 and combiner cabinet 21 in the energy storage container 4. The specific structures of the power distribution installation part 111 and the combiner installation part 213 have been described in detail above and will not be described further here.

[0078] Based on the above-described embodiment two, as a further preferred embodiment, please refer to... Figure 8 Both the power distribution cable hole 212 and the busbar cable hole 214 are equipped with blind hole guard coils 3 made of rubber material, and the blind hole guard coils 3 have a cross-shaped slit 31 in the middle.

[0079] When no wiring is routed through the power distribution cable hole 112 or the busbar cable hole 214, the blind hole guard coil 3 can seal the power distribution cable hole 112 or the busbar cable hole 214, preventing external impurities from entering the cabinet and affecting the normal operation of electrical components, thereby ensuring the safe and reliable operation of the power distribution / busbar module 2. When wiring is routed through the power distribution cable hole 112 or the busbar cable hole 214, because the blind hole guard coil 3 has a cross-shaped slit 31, the cable can pass through the slit to connect the electrical components in the two cabinets. Moreover, the cross-shaped slit 31 not only facilitates cable passage but also forms a large opening to accommodate more cables.

[0080] Based on the two embodiments described above, as a preferred option, please refer to... Figure 3 and Figure 4 The power distribution device group includes external control devices 12 (such as electricity meters, emergency stop switches, push-button switches, etc.). The power distribution cabinet 11 has a recessed panel structure 113 on one side along the thickness direction. The control devices 12 are located on the panel structure 113, which can reduce the thickness of the power distribution cabinet 11 and save the space occupied by the power distribution module 1.

[0081] This utility model also provides an energy storage system, which includes an energy storage container 4, a modular combiner cabinet disclosed in the above embodiments, and other components. The modular combiner cabinet and other components are all located inside the energy storage container 4. For the specific arrangement of other components, please refer to the prior art, which will not be repeated here.

[0082] In summary, the modular combiner cabinet and energy storage system provided in this application have the following main advantages:

[0083] (1) The combiner cabinet adopts a modular design and is divided into power distribution module 1 and combiner module 2. Power distribution module 1 and combiner module 2 can be mass-produced separately without interfering with each other. No matter whether the power distribution device or the combiner device is changed, there is no need to generate a new model of combiner cabinet. Only a single module needs to be changed, which saves costs and facilitates the preparation and mass production of combiner cabinets.

[0084] (2) The junction cabinet 21 and the power distribution cabinet 11 are designed with different widths to reduce the overall volume of the junction cabinet and save the internal space of the energy storage container 4, so that battery modules can be added to increase the energy density of the energy storage system.

[0085] (3) The power distribution module 1 and the combiner module 2 have two arrangement methods: up and down / left and right. The combiner cabinet can be dynamically adjusted according to the internal layout of the energy storage container 4, which improves the adaptability and flexibility of the combiner cabinet installation.

[0086] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0087] The modular combiner cabinet and energy storage system provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A modular combiner cabinet, located inside an energy storage container (4), characterized in that, include: The power distribution module (1) includes a power distribution cabinet (11) and a power distribution device group disposed therein. The power distribution cabinet (11) has a power distribution installation part (111) and a power distribution wiring hole at its first end along the height direction. The busbar module (2) includes a busbar cabinet (21) and a busbar device group disposed therein. The first end of the busbar cabinet (21) along the height direction is provided with a busbar mounting part (211) and a busbar routing hole (212) that are detachably connected to the power distribution mounting part (111). The width of the busbar cabinet (21) is not equal to the width of the power distribution cabinet (11). The power distribution cabinet (11) and the busbar cabinet (21) can be stacked vertically along the height direction, and their opposite first ends can be detachably connected together. The power distribution device group and the busbar device group are connected by electrical signals through the power distribution wiring hole and the busbar wiring hole (212). The power distribution cabinet (11) and the busbar cabinet (21) leave clearance space in the width direction to accommodate other components in the energy storage container (4).

2. The modular combiner cabinet according to claim 1, characterized in that, The power distribution cabinet (11) and the busbar cabinet (21) are stacked together from top to bottom. The width of the power distribution cabinet (11) is smaller than the width of the busbar cabinet (21). A gap is left between the power distribution cabinet (11) and the busbar cabinet (21) on the same side along the width direction to form the clearance space above the first end of the busbar cabinet (21).

3. The modular combiner cabinet according to claim 2, located inside the energy storage container (4), is characterized in that, The first end of the junction box (21) is divided into two installation areas along the width direction. The first junction installation part (211) and the first junction wiring hole (212) are located in the first installation area. The width of the first installation area is the same as the width of the distribution cabinet (11) for the distribution cabinet (11) to be installed. The second installation area is provided with an installation part (215) for the detachable installation of other components.

4. The modular combiner cabinet according to claim 3, located inside the energy storage container (4), is characterized in that, The second installation area is equipped with a fire cylinder assembly (5). The fire cylinder assembly (5) includes a base (51), a fire cylinder (52), and clamps (53). The base (51) has a bottom plate with an installation part two (511) that is detachably connected to the installation part one (215). The fire cylinder (52) is mounted on the side plate of the base (51) and is vertically installed through several clamps (53).

5. The modular combiner cabinet according to claim 2, characterized in that, The bottom of the junction cabinet (21) is provided with a junction installation part 2 (213), which is detachably installed on the inner wall of the energy storage container (4).

6. The modular combiner cabinet according to claim 1, characterized in that, The power distribution cabinet (11) has a power distribution wiring hole 2 (112) on the first side along the width direction, and the busbar cabinet (21) has a busbar wiring hole 2 (214) on the first side along the width direction. The power distribution cabinet (11) and the busbar cabinet (21) can be arranged side by side along the width direction, with their opposite first sides close together. The power distribution device group and the busbar device group are connected by electrical signals through the cables passing through the power distribution wiring hole 2 (112) and the busbar wiring hole 2 (214).

7. The modular combiner cabinet according to claim 6, characterized in that, The first power distribution installation part (111) is detachably installed on the inner wall of the energy storage container (4), and the bottom of the junction cabinet (21) is provided with the second junction installation part (213), which is detachably installed on the inner wall of the energy storage container (4).

8. The modular combiner cabinet according to claim 6, characterized in that, Both the second power distribution cable hole (112) and the second busbar cable hole (214) are provided with blind hole guard coils (3) made of rubber material, and the blind hole guard coils (3) have a cross-shaped slit (31) in the middle.

9. The modular combiner cabinet according to any one of claims 1 to 8, characterized in that, The power distribution device group includes an external control device (12), and the power distribution cabinet (11) has a recessed panel structure (113) on one side along the thickness direction, and the control device (12) is disposed on the panel structure (113).

10. An energy storage system, characterized in that, Includes an energy storage container (4) and a modular combiner cabinet as described in any one of claims 1 to 9 disposed inside the energy storage container (4).

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