Convergence cabinet and energy storage system

Abstract

The utility model relates to the technical field of power distribution devices, and provides a confluence cabinet and an energy storage system.The confluence cabinet comprises a box body, a circuit breaker, a wire inlet busbar and a wire outlet busbar, and the circuit breaker is arranged in the box body; the wire inlet busbar and the wire outlet busbar are arranged in the box body, are connected with the circuit breaker and are suitable for controlling the connection and disconnection of the wire inlet busbar and the wire outlet busbar through the circuit breaker; wherein in the first direction, the wire inlet busbar and the wire outlet busbar are located at one end of the circuit breaker, the wire inlet busbar and the wire outlet busbar are oppositely arranged in the second direction, extend in the third direction and are in lap joint with the cable in the third direction, and the first direction, the second direction and the third direction are different and form included angles with one another. Therefore, on one hand, the box body can be miniaturized and compactly arranged, the space occupation of the confluence cabinet is reduced, and the energy density of the energy storage system is improved; and on the other hand, the lap joint requirements of more cables can be met, the cable lap joint difficulty is reduced, the cable consumption is reduced, and the system capacity can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of power distribution devices, and in particular to a combiner cabinet and an energy storage system. Background Art

[0002] Among the related technologies, integrated energy storage systems can be developed to meet the needs of the mobile energy storage market. They have the characteristics of simplified infrastructure construction costs, short construction period, high degree of modularization, and easy transportation and installation. They can be applied to thermal, wind, solar and other power stations or offshore platforms, ships, islands, communities, schools, scientific research institutions, factories, large load centers and other application scenarios, such as ship container energy storage systems.

[0003] However, the existing combiner cabinet has unreasonable spatial layout and occupies a large space, resulting in low energy density of the energy storage system. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide a combiner cabinet and an energy storage system, wherein the spatial arrangement of the components in the combiner cabinet is reasonable, the space occupancy is low, and the energy density of the energy storage system is high.

[0005] In the first aspect, the present application proposes a junction box, comprising: a box body, a circuit breaker, an incoming busbar and an outgoing busbar, the circuit breaker is arranged in the box body; the incoming busbar and the outgoing busbar are both arranged in the box body, and are connected to the circuit breaker, and are suitable for controlling the on and off of the incoming busbar and the outgoing busbar through the circuit breaker; wherein in the first direction, the incoming busbar and the outgoing busbar are located at one end of the circuit breaker, the incoming busbar and the outgoing busbar are arranged relatively in the second direction, and extend along the third direction and overlap the cables along the third direction, the first direction, the second direction and the third direction are all different and have an angle with each other.

[0006] According to the junction cabinet of the embodiment of the present application, one end of the incoming busbar and the outgoing busbar in the first direction is connected to the circuit breaker, and the other end is formed as a cable connection end. At the same time, they are relatively arranged in the second direction and extend along the third direction. On the one hand, the space occupied by the incoming busbar and the outgoing busbar in the first direction can be improved, and the box space in the second direction and the third direction can be fully utilized, so that the box can be miniaturized and compactly arranged, reducing the space occupied by the junction cabinet and improving the energy density of the energy storage system; on the other hand, the space in the second direction and the third direction can be fully utilized to arrange multiple outgoing busbars and multiple incoming busbars, and meet the splicing requirements of more cables, reduce the difficulty of cable splicing, reduce the amount of cables used, and improve the system capacity.

[0007] According to some embodiments of the present application, the junction box also includes: a fuse, which is arranged in a box body and connected to the incoming busbar or the outgoing busbar, a fixed beam is arranged on the box body, the fixed beam extends along the second direction, and both ends are connected to the box body, and the incoming busbar and the outgoing busbar are connected to the fixed beam.

[0008] In the above technical solution, both ends of the fixed beam can be directly connected to the box to improve the structural strength of the box. At the same time, the fixed beam can also be used to fix the incoming busbar and the outgoing busbar to form a fixed point for the cable on the fixed beam, that is, the cable tension can be transmitted to the box through the fixed beam instead of directly to the overlap point, thereby improving the connection reliability and stability between the fuse and the incoming busbar, or the fuse and the outgoing busbar. At the same time, there is no need to set up a transfer busbar, which can also reduce the cable length, reduce costs, and further improve space occupancy.

[0009] According to some embodiments of the present application, there are two fixed beams, and the two fixed beams are arranged opposite to each other in a third direction, and both ends of the incoming busbar and both ends of the outgoing busbar are connected to the fixed beams.

[0010] In the above technical solution, on the one hand, both ends of the outgoing busbar and the incoming busbar can be fixed by fixed beams, so that the fixation of the outgoing busbar and the incoming busbar is more stable, so that the cable tension can be better transmitted to the box, so as to further improve the reliability and stability of the connection between the fuse and the incoming busbar, or the fuse and the outgoing busbar; on the other hand, the number of fixed beams is greater, and the fixed beams can further improve the structural strength of the box in the second direction.

[0011] According to some embodiments of the present application, a mounting groove is provided on the fixed beam, at least part of the outgoing busbar and the incoming busbar extend into the mounting groove, the incoming busbar and the outgoing busbar have through holes, and the fixed beam passes through the through holes.

[0012] In the above technical solution, an annular groove can be opened on the fixed beam, and a through hole can be opened on the plate structure corresponding to the incoming busbar and the outgoing busbar. The fixed beam extends along the second direction and passes through the through holes on the outgoing busbar and the incoming busbar that are relatively arranged in the second direction. At the same time, at least part of the plate body defining the through hole area of ​​the incoming busbar and the outgoing busbar can fall into the installation groove to realize the connection between the fixed beam and the outgoing busbar, and the fixed beam and the incoming busbar, thereby improving the connection stability. The installation groove can be used to limit the incoming busbar and the outgoing busbar, thereby reducing the movement of the incoming busbar and the outgoing busbar, thereby reducing the probability of poor contact of surrounding components electrically connected to the incoming busbar and the outgoing busbar, and improving the working stability and reliability of the busbar.

[0013] According to some embodiments of the present application, the junction box further includes a fixing member connected to the fixing beam, and fixing members are provided on both sides of the outgoing busbar or the incoming busbar in the second direction to clamp and fix the outgoing busbar or the incoming busbar.

[0014] In the above technical solution, the fixing parts are arranged in pairs, and the ends of the outgoing busbar and the ends of the incoming busbar can be provided with fixing parts, a clamping space is defined between the two fixing parts, and the outgoing busbar or the incoming busbar is located in the clamping space, so that the outgoing busbar or the incoming busbar can be clamped and fixed by the fixing parts arranged in pairs, which can further improve the fixing stability and reliability of the outgoing busbar and the incoming busbar on the fixed beam.

[0015] According to some embodiments of the present application, the fixing member includes: a first plate and a second plate connected to each other, the first plate is connected to the fixing beam, and the second plates of adjacent fixing members are arranged opposite to each other in the second direction.

[0016] In the above technical scheme, the connection stability and reliability between the fixing part and the fixed beam can be improved, thereby further improving the fixing reliability and stability of the fixed beam to the incoming busbar and the outgoing busbar, making the mechanical transfer effect of the mechanical transfer path defined by the busbar and the fixed beam better, reducing the stress on the overlap point between the busbar and the fuse, so as to effectively improve the connection reliability between the fuse and the busbar and improve the working stability of the fuse.

[0017] According to some embodiments of the present application, the combiner cabinet further includes: a support beam, which is connected to the box body, and the support beam is located on one side of the fuse in the first direction and is suitable for supporting the fuse.

[0018] In the above technical solution, the support beam can be constructed as an insulating part, and the support beam is used to support the fuse, so that the overlapping point and the fixed point are separated by the fixed beam, and the fuse is further supported and limited by the support beam. When the fuse is subjected to force, the fuse can be pushed in the opposite direction, and the overlapping reliability and stability of the fuse and the busbar can be further improved.

[0019] According to some embodiments of the present application, a column is provided on the box body, and the column is connected to the support beam at one end of the support beam away from the fuse.

[0020] In the above technical solution, the column extends along the first direction, and one end is connected to the bottom plate of the box, and the other end is connected to the support beam. The support beam can extend along the second direction, and at least partially located on one side of the fuse in the first direction to support the fuse. The setting of the column can improve the supporting effect of the support beam on the fuse.

[0021] According to some embodiments of the present application, the incoming busbar and the outgoing busbar are arranged in pairs, and there is at least one pair, each pair of outgoing busbar and incoming busbar corresponds to a fuse, and multiple pairs of incoming busbars and outgoing busbars are arranged at intervals in the second direction.

[0022] In the above technical solution, each pair of incoming busbars and outgoing busbars can be used to connect more cables, and the provision of multiple pairs of incoming busbars and outgoing busbars can further increase the connection requirements and further improve the system capacity.

[0023] According to some embodiments of the present application, a connecting beam is further provided on the box body, and the ends of the outgoing busbar and the incoming busbar connected to the circuit breaker are both connected to the connecting beam.

[0024] In the above technical solution, the connecting beam extends along the second direction, and both ends are connected to the box body. The setting of the connecting beam can not only improve the structural strength of the box body, but also realize the fixation of the outgoing busbar and the incoming busbar, so that the electrical connection stability and reliability of the outgoing busbar, the incoming busbar and the circuit breaker are higher, and the working reliability and safety of the busbar are higher.

[0025] According to some embodiments of the present application, busbars that are adjacent to each other on the connecting beam and are not connected to the fuse are arranged on both sides of the connecting beam in the third direction.

[0026] In the above technical solution, under the premise of ensuring the connection reliability and stability between the busbar and the circuit breaker, the insulation protection between adjacent busbars is made more reliable to further improve the safety of the busbar.

[0027] According to some embodiments of the present application, a busbar connected to a fuse includes an upper busbar section and a lower busbar section, the lower busbar section and the lower busbar section are connected via the fuse, and the upper busbar section is at least partially flexible.

[0028] In the above technical solution, buffering can be achieved by the flexible upper busbar section, that is, when the fuse is impacted or vibrates, the upper busbar section can buffer the vibration and impact by its own flexible characteristics, thereby further improving the connection stability and reliability between the fuse and surrounding components.

[0029] According to some embodiments of the present application, the box body further includes a diagonal support rod, which is arranged on at least one side of the box body in the second direction, the diagonal support rod is connected to the box body, and the first end is connected to one end of the box body in the first direction and extends along the third direction, and the second end is connected to the other end of the box body in the first direction.

[0030] In the above technical solution, pulling can be achieved between the strong point at the bottom of the box and the weak point at the top to reinforce the weak point at the top, thereby increasing the height and main frequency of the box and improving the vibration resistance of the box.

[0031] According to some embodiments of the present application, the box body further includes a transverse brace extending along the second direction, and one end of the transverse brace is disposed adjacent to the first end of the diagonal brace.

[0032] In the above technical solution, the connection between the two support columns can be achieved through the cross brace rod, and the coordination between the diagonal brace rod and the cross brace rod can be achieved to further improve the box body stiffness and main frequency.

[0033] In a second aspect, the present application proposes an energy storage system, including: the combiner cabinet in the above embodiment.

[0034] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 is a schematic diagram of an energy storage system according to an embodiment of the present application;

[0037] Figure 2 is a three-dimensional schematic diagram of a combiner cabinet according to an embodiment of the present application;

[0038] Figure 3 yes Figure 2 The middle circle shows a partial enlarged schematic diagram of area A;

[0039] Figure 4 is a schematic front view of a combiner cabinet according to an embodiment of the present application;

[0040] Figure 5 is a rear view schematic diagram of a combiner cabinet according to an embodiment of the present application;

[0041] Figure 6 is a schematic side view of a combiner cabinet according to an embodiment of the present application.

[0042] Reference numerals:

[0043] Combiner cabinet 100,

[0044] Box body 10, column 11, diagonal brace 12, horizontal brace 13,

[0045] Circuit breaker 20,

[0046] Incoming busbar 30, upper busbar section 31, lower busbar section 32,

[0047] Outgoing busbar 40, fuse 50, fixed beam 60,

[0048] Fixing member 70, first plate 71, second plate 72,

[0049] Support beam 80, connecting beam 90,

[0050] Energy storage system 200,

[0051] Installation slot a,

[0052] The first direction is X, the second direction is Y, and the third direction is Z. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0055] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0056] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0058] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0061] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0062] The term “plurality” used in this application refers to two or more (including two).

[0063] An embodiment of the present application provides a combiner cabinet, which is used in an energy storage system. An energy storage device is usually provided upstream of the combiner cabinet, and electrical equipment is usually provided downstream of the combiner cabinet.

[0064] The embodiment of the present application provides an energy storage device, including one or more battery clusters (Battery Cluster) to increase the voltage and capacity of the energy storage device. The battery cluster may include multiple battery devices, and the multiple battery devices are connected in series through a busbar component to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0065] The energy storage device can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems or temporary power supply systems. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during low power consumption and provide electrical energy to relevant users or electrical equipment during peak power consumption. The energy storage system provided in the embodiment of the present application can be any power system that requires the use of an energy storage device.

[0066] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0067] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters, wherein the battery clusters are housed in the cabinet.

[0068] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a master control module, a power distribution module, and a fire protection module.

[0069] As an example, the thermal management module may include a liquid cooling unit that provides cooling liquid for regulating the temperature of the battery cells to each battery device through a pipeline.

[0070] As an example, the main control module can be used as a battery management unit of a battery cluster to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power or temperature of the battery cluster. For example, the charging and discharging current and voltage of the battery cluster can be controlled. The main control module includes a slave battery management unit SBMU (SBMU), a fusion switch and other modules.

[0071] As an example, the master control module can be used as a battery management unit of an energy storage device to monitor and manage the energy storage device. The master control module can monitor information such as the current, voltage, power, state of charge or temperature of the energy storage device. For example, the charging and discharging current, voltage, etc. of the energy storage device can be controlled. As an example, the master control module includes an insulation monitoring module IMM (Insulation Monitoring Module, abbreviated as IMM), a master battery management unit MBMU (Master Battery Management Unit, MBMU), Ethernet ETH (EtherNet, ETH) and a fiber optic conversion module.

[0072] As an example, the fire protection system includes a control panel, detectors, alarm devices, etc., which are used to detect, alarm or extinguish fire in the energy storage system.

[0073] In some embodiments, the energy storage system may include one or more energy storage devices and a power converter system (PCS), and the power converter is used to connect between the power generation equipment and the energy storage device. The power generation equipment is used to generate electrical energy, and the electrical energy generated by the power generation equipment can be stored in the energy storage device through the power conversion device. As an example, the power generation equipment may specifically be a solar panel, a hydropower generation equipment, a thermal power generation equipment, a wind power generation equipment, etc. Among them, the specific type of the power generation equipment is not limited in this application.

[0074] The energy storage system may further include a combiner cabinet according to an embodiment of the present application. The combiner cabinet may realize on-off connection of the electrical connection between the energy storage device and the load (ie, electrical equipment), and may realize fuse protection, thereby improving the safety and reliability of the energy storage system.

[0075] However, in the prior art, the layout of the busbars inside the combiner cabinet and the relative positions of the multiple busbars are not rational, and the internal space of the combiner cabinet is not reasonably utilized, resulting in the need to set the combiner cabinet to a larger size, which increases the space occupation of the combiner cabinet. When the energy storage system is configured in a structural form such as an energy storage container, the space of the energy storage system itself is limited, which will further lead to a decrease in the energy density of the energy storage system.

[0076] Based on this, the present application proposes a combiner cabinet in which the busbars are reasonably arranged, which can improve space occupancy, especially reduce space occupancy in the first direction, so that the combiner cabinet can be miniaturized and compacted, and thus the energy density of the energy storage system can be improved.

[0077] Reference below Figure 1-Figure 6 A combiner cabinet 100 and an energy storage system 200 according to an embodiment of the present application are described.

[0078] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present application proposes a junction box 100, comprising: a box body 10, a circuit breaker 20, an incoming busbar 30 and an outgoing busbar 40, the circuit breaker 20 is arranged in the box body 10; the incoming busbar 30 and the outgoing busbar 40 are both arranged in the box body 10, and are connected to the circuit breaker 20, and are suitable for controlling the on and off of the incoming busbar 30 and the outgoing busbar 40 through the circuit breaker 20.

[0079] Specifically, one end of the outgoing busbar 40 can be used to connect to the input end of the load (for example, if the load is a DC power device, the input end of the load is directly connected to the outgoing busbar 40; if the load is an AC power device, the DC end of the converter is connected to the outgoing busbar 40, and the converter end of the converter is connected to the power device), and the incoming busbar 30 can be used to connect the DC cable of the energy storage device, and the other ends of the incoming busbar 30 and the outgoing busbar 40 are both connected to the circuit breaker 20, so as to control the on and off of the electrical connection between the incoming busbar 30 and the outgoing busbar 40 through the circuit breaker 20, thereby realizing on and off control of whether the circuit is conductive.

[0080] Among them, in the first direction, the incoming busbar 30 and the outgoing busbar 40 are located at one end of the circuit breaker 20, the incoming busbar 30 and the outgoing busbar 40 are arranged relatively to each other in the second direction, and extend along the third direction, and the cables are overlapped along the third direction, and the first direction, the second direction and the third direction are all different and have angles with each other.

[0081] That is to say, the outgoing busbar 40 and the incoming busbar 30 are connected to the circuit breaker 20 at one end of the circuit breaker 20 located in the first direction, that is, the structure in which the outgoing busbar 40 is connected to the circuit breaker 20 and the structure in which the incoming busbar 30 is connected to the circuit breaker 20 are both extended and arranged along the first direction, and the incoming busbar 30 and the outgoing busbar 40 are further arranged relatively in the second direction, and the incoming busbar 30 and the outgoing busbar 40 are both extended along the third direction. When the incoming busbar 30 and the outgoing busbar 40 are arranged, there is no need to arrange the incoming busbar 30 and the outgoing busbar 40 sequentially in the first direction to improve the space occupancy in the first direction caused by the arrangement of the busbars. At the same time, the space size in the second direction can be fully utilized to make the spacing between the incoming busbar 30 and the outgoing busbar 40 more reasonable, and the space size in the third direction can be fully utilized to make the connection area of ​​the incoming busbar 30 and the outgoing busbar 40 larger, which can meet the overlapping requirements of more cables and improve the system capacity.

[0082] Exemplarily, the first direction is the height direction, the second direction is the width direction, and the third direction is the front-to-back direction, and the circuit breaker 20 and the incoming busbar 30 and the outgoing busbar 40 are sequentially arranged in the height direction, and the incoming busbar 30 and the outgoing busbar 40 are arranged oppositely in the width direction, and one end of the height of the incoming busbar 30 and the outgoing busbar 40 is connected to the circuit breaker 20, and the other end of the height of the incoming busbar 30 and the outgoing busbar 40 is formed into a plate structure extending in the front-to-back direction, so that the incoming busbar 30 and the outgoing busbar 40 are connected to the circuit breaker 20. The parts of the circuit breaker 20 have no overlap in the height direction, and the incoming busbar 30 and the outgoing busbar 40 do not need to be arranged relative to each other in the height direction, which occupies less space in the height direction. Instead, the dimensional space in the width direction is fully utilized to realize the reasonable spacing of the incoming busbar 30 and the outgoing busbar 40. While improving reliability and stability, the incoming busbar 30 and the outgoing busbar 40 extending in the front-to-back direction can make full use of the depth of the box 10, thereby meeting the overlapping requirements of more cables to increase the system capacity.

[0083] More importantly, the incoming busbar 30 and the outgoing busbar 40 can be located at the bottom of the box 10, realizing a bottom-in and bottom-out layout. Under the premise of ensuring the connection reliability and stability between the incoming busbar 30, the outgoing busbar 40 and the cables, the cable wiring space is more abundant. Based on the different turning radii of different cables, adaptive design can be performed, which can reduce meaningless winding and crossing, thereby reducing cable usage, reducing costs, meeting the overlap requirements of more cables, and improving system capacity.

[0084] According to the junction box 100 of the embodiment of the present application, one end of the incoming busbar 30 and the outgoing busbar 40 in the first direction is connected to the circuit breaker 20, and the other end is formed as a cable connection end. At the same time, they are relatively arranged in the second direction and extend along the third direction. On the one hand, the space occupied by the incoming busbar 30 and the outgoing busbar 40 in the first direction can be improved, and the space of the box 10 in the second direction and the third direction can be fully utilized, so that the box 10 can be miniaturized and compactly arranged, reducing the space occupied by the junction box 100 and improving the energy density of the energy storage system 200; on the other hand, the space in the second direction and the third direction can be fully utilized to arrange multiple outgoing busbars 40 and multiple incoming busbars 30, and meet the splicing requirements of more cables, reduce the difficulty of cable splicing, reduce the amount of cables used, and improve the system capacity.

[0085] like Figure 4 and Figure 5 As shown, according to some embodiments of the present application, the combiner cabinet 100 further includes: a fuse 50 , which is disposed in the cabinet 10 and connected to the incoming busbar 30 or the outgoing busbar 40 .

[0086] Specifically, the fuse 50 is used to melt when the heat in the electrical circuit composed of the outgoing busbar 40 and the incoming busbar 30 is too high, so that the electrical circuit can be disconnected in time, thereby improving the reliability and safety of the junction box 100 and the energy storage system 200. Based on cost and stability considerations, the outgoing busbar 40 can be used in conjunction with the fuse 50, or the incoming busbar 30 can be used in conjunction with the fuse 50.

[0087] It can be understood that the outgoing busbar 40 or the incoming busbar 30 is overlapped with the fuse 50 to achieve electrical connection, that is, a overlap point is formed between the fuse 50 and the busbar, and the incoming busbar 30 and the outgoing busbar 40 need to be further connected with cables, so that the overlap point needs to withstand the cable tension, that is, the overlap point is also formed as a fixed point, and the cable tension will be further transmitted to the overlap point. Therefore, in the prior art, a one-end transfer busbar is set between the fuse 50 and the incoming busbar 30, or between the fuse 50 and the outgoing busbar 40, so as to achieve transfer through the transfer busbar and avoid the cable tension being directly transmitted to the overlap point, thereby improving the matching stability and reliability of the fuse 50 and the incoming busbar 30, or the fuse 50 and the outgoing busbar 40. However, setting a transfer busbar will not only increase the space occupancy, but also increase the busbar usage and increase the production cost.

[0088] Based on this, the present application further provides a fixed beam 60 on the box body 10 , the fixed beam 60 extends along the second direction, and both ends are connected to the box body 10 , and both the incoming busbar 30 and the outgoing busbar 40 are connected to the fixed beam 60 .

[0089] Thus, both ends of the fixed beam 60 can be directly connected to the box body 10 to improve the structural strength of the box body 10. At the same time, the fixed beam 60 can also be used to fix the incoming busbar 30 and the outgoing busbar 40 to form a cable fixing point on the fixed beam 60, that is, the cable tension can be transmitted to the box body 10 through the fixed beam 60, rather than directly transmitted to the overlap point, thereby improving the connection reliability and stability between the fuse 50 and the incoming busbar 30, or the fuse 50 and the outgoing busbar 40. At the same time, there is no need to set up a transfer busbar, which can also reduce the cable length, reduce costs, and further improve space occupancy.

[0090] Combination Figure 4 and Figure 5 As shown, according to some embodiments of the present application, there are two fixed beams 60 , and the two fixed beams 60 are arranged opposite to each other in the third direction, and both ends of the incoming busbar 30 and both ends of the outgoing busbar 40 are connected to the fixed beams 60 .

[0091] Specifically, the box body 10 can be constructed as a frame structure, and the box body 10 can include a top plate, a bottom plate and a plurality of support columns arranged between the top plate and the bottom plate, and the side panels, the back plate and the front panel can be further installed on the support columns, the front panel can be formed as a box door, or a box door can be arranged on the front panel, and the two ends of the fixed beam 60 can be connected to the support columns, and the two fixed beams 60 are opposite to each other in the third direction, so that the two ends of the outgoing busbar 40 and the incoming busbar 30 in the second direction can be fixed on the two fixed beams 60 respectively.

[0092] Therefore, on the one hand, both ends of the outgoing busbar 40 and the incoming busbar 30 can be fixed by the fixed beam 60, so that the fixation of the outgoing busbar 40 and the incoming busbar 30 is more stable, so that the cable tension can be better transmitted to the box 10, so as to further improve the overlap reliability and stability between the fuse 50 and the incoming busbar 30, or the fuse 50 and the outgoing busbar 40; on the other hand, the number of fixed beams 60 is greater, and the fixed beams 60 can further improve the structural strength of the box 10 in the second direction.

[0093] It can be understood that the junction cabinet 100 is provided with a circuit breaker 20, a fuse 50 and secondary side devices, and the incoming busbar 30 and the outgoing busbar 40 are connected to the circuit breaker 20 at one end in the second direction, so that the circuit breaker 20 can be arranged adjacent to the other end in the second direction, that is, it can be arranged adjacent to the box door, so that the circuit breaker 20, the fuse 50 and the secondary side devices can all be maintained from one side of the box door, which can reduce the difficulty of maintenance and make the junction cabinet 100 more suitable for use in scenarios with narrow space and high maintenance difficulty, such as: in the engine room of a ship.

[0094] It should be pointed out that the junction box 100 of the embodiment of the present application, the arrangement of the outgoing busbar 40 and the incoming busbar 30 enables the junction box 100 to achieve bottom-in and bottom-out or top-in and top-out in the height direction, and the incoming busbar 30 and the outgoing busbar 40 can be arranged along the width direction and electrically connected to the cables along the front-to-back direction. On the premise of improving the connection stability and reliability between the fuse 50 and the busbar, there is no need to set up a transfer busbar structure, which can reduce costs, and the outgoing busbar 40 and the incoming busbar 30 can be fixed by the fixed beam 60, which can also further optimize the busbar size, strengthen the busbar structure, and improve reliability and stability.

[0095] like Figure 3 As shown, according to some embodiments of the present application, a mounting groove a is provided on the fixed beam 60, and at least a portion of the outgoing busbar 40 and the incoming busbar 30 extends into the mounting groove a, the incoming busbar 30 and the outgoing busbar 40 have through holes, and the fixed beam 60 is provided with the through holes.

[0096] Specifically, an annular groove can be opened on the fixed beam 60, and a through hole can be opened on the plate structure corresponding to the incoming busbar 30 and the outgoing busbar 40. The fixed beam 60 extends along the second direction and passes through the through holes on the outgoing busbar 40 and the incoming busbar 30 that are relatively arranged in the second direction. At the same time, at least part of the plate body defined by the through hole area of ​​the incoming busbar 30 and the outgoing busbar 40 can fall into the installation groove a to realize the connection between the fixed beam 60 and the outgoing busbar 40, and the fixed beam 60 and the incoming busbar 30, thereby improving the connection stability. The installation groove a can be used to limit the incoming busbar 30 and the outgoing busbar 40, reduce the movement of the incoming busbar 30 and the outgoing busbar 40, reduce the probability of poor contact of the surrounding components electrically connected to the incoming busbar 30 and the outgoing busbar 40, and improve the working stability and reliability of the busbar.

[0097] exist Figure 3 In the illustrated embodiment, according to some embodiments of the present application, the combiner cabinet 100 further includes a fixing member 70, which is connected to the fixing beam 60, and the outgoing busbar 40 or the incoming busbar 30 is provided with fixing members 70 on both sides in the second direction to clamp and fix the outgoing busbar 40 or the incoming busbar 30.

[0098] Specifically, the fixing members 70 are arranged in pairs, and the ends of the outgoing busbar 40 and the incoming busbar 30 can be provided with fixing members 70, a clamping space is defined between the two fixing members 70, and the outgoing busbar 40 or the incoming busbar 30 is located in the clamping space, so that the outgoing busbar 40 or the incoming busbar 30 can be clamped and fixed by the fixing members 70 arranged in pairs, which can further improve the fixing stability and reliability of the outgoing busbar 40 and the incoming busbar 30 on the fixed beam 60.

[0099] See also Figure 3 As shown, according to some embodiments of the present application, the fixing member 70 includes: a first plate 71 and a second plate 72 connected to each other, the first plate 71 is connected to the fixing beam 60, and the second plates 72 of adjacent fixing members 70 are arranged opposite to each other in the second direction.

[0100] Specifically, the first plate 71 and the second plate 72 have an angle, the first plate 71 is arranged in affixed relation with the fixed beam 60 in the second direction, and the second plate 72 is located on one side of the outgoing busbar 40 or on one side of the incoming busbar 30 in the third direction, so as to clamp and fix the incoming busbar 30 or the outgoing busbar 40 through the two second plates 72 located on both sides of the outgoing busbar 40 or the incoming busbar 30, and by setting the first plate 71, the fixing stability and reliability of the fixing member 70 and the fixed beam 60 can be improved.

[0101] It should be noted that a fixing hole can be opened on the first plate 71 and fixed to the fixing beam 60 by fasteners. A fixing hole can also be opened on the second plate 72 and fasteners can be used to fix the two second plates 72 to the outgoing busbar 40, or the two second plates 72 to the incoming busbar 30.

[0102] In this way, the connection stability and reliability between the fixing member 70 and the fixed beam 60 can be improved, thereby further improving the fixing reliability and stability of the fixed beam 60 to the incoming busbar 30 and the outgoing busbar 40, making the mechanical transfer effect of the mechanical transfer path defined by the busbar and the fixed beam 60 better, reducing the stress on the overlap point between the busbar and the fuse 50, so as to effectively improve the connection reliability between the fuse 50 and the busbar, and improve the working stability of the fuse 50.

[0103] According to some embodiments of the present application, the combiner cabinet 100 further includes: a support beam 80 , which is connected to the box body 10 , and is located on one side of the fuse 50 in the first direction and is suitable for supporting the fuse 50 .

[0104] Specifically, the support beam 80 can be constructed as an insulating part, and the support beam 80 is used to support the fuse 50, so that while the overlapping point and the fixed point are separated by the fixed beam 60, the fuse 50 can be further supported and limited by the support beam 80. When the fuse 50 is subjected to force, the fuse 50 can be pushed in the opposite direction, and the overlapping reliability and stability of the fuse 50 and the busbar can be further improved.

[0105] like Figure 4 and Figure 5 As shown, according to some embodiments of the present application, a column 11 is provided on the box body 10 , and the column 11 is connected to the support beam 80 at one end of the support beam 80 away from the fuse 50 .

[0106] Among them, the column 11 extends along the first direction, and one end is connected to the bottom plate of the box body 10, and the other end is connected to the support beam 80. The support beam 80 can extend along the second direction, and at least partially located on one side of the fuse 50 in the first direction to achieve support for the fuse 50. The setting of the column 11 can improve the supporting effect of the support beam 80 on the fuse 50.

[0107] It can be understood that the incoming busbar 30 and the outgoing busbar 40 are arranged in pairs, and there is at least one pair, each pair of outgoing busbar 40 and incoming busbar 30 corresponds to a fuse 50, and multiple pairs of incoming busbar 30 and outgoing busbar 40 are arranged at intervals in the second direction.

[0108] Therefore, each pair of incoming busbars 30 and outgoing busbars 40 can perform more cable splicing, and the provision of multiple pairs of incoming busbars 30 and outgoing busbars 40 can further increase the splicing requirements and further improve the system capacity.

[0109] For example, the number of incoming busbars 30 is two, and the number of outgoing busbars 40 is also two. By using two incoming busbars 30 and two outgoing busbars 40, 32 lines, 150 mm, can be met. 2 The cable splicing requirement increases the system capacity to 2500A.

[0110] like Figure 5 As shown, according to some embodiments of the present application, a connecting beam 90 is further provided on the box body 10 , and one end of the outgoing busbar 40 and the incoming busbar 30 connected to the circuit breaker 20 are both connected to the connecting beam 90 .

[0111] Among them, the connecting beam 90 extends along the second direction, and both ends are connected to the box body 10. Through the setting of the connecting beam 90, not only the structural strength of the box body 10 can be improved, but also the fixation of the outgoing busbar 40 and the incoming busbar 30 can be achieved, so that the electrical connection stability and reliability of the outgoing busbar 40, the incoming busbar 30 and the circuit breaker 20 are higher, and the working reliability and safety of the busbar are higher.

[0112] exist Figure 5 In the illustrated embodiment, according to some embodiments of the present application, busbars that are adjacent to each other on the connecting beam 90 and are not connected to the fuse 50 are arranged on both sides of the connecting beam 90 in the third direction.

[0113] Exemplarily, there are two incoming busbars 30 and two outgoing busbars 40, and the fuses 50 are all arranged on the incoming busbar 30. In the second direction, the two outgoing busbars 40 are arranged adjacent to each other, one of the outgoing busbars 40 is connected to one side of the connecting beam 90 in the third direction, and the other outgoing busbar 40 is connected to the other side of the connecting beam 90 in the third direction, so that the interval between the two outgoing busbars 40 in the third direction is larger, reducing the probability of electrical connection between the two, thereby improving safety.

[0114] Therefore, under the premise of ensuring the connection reliability and stability between the busbar and the circuit breaker 20, the insulation protection between adjacent busbars is made more reliable, so as to further improve the safety of the busbar.

[0115] like Figure 4 and Figure 5 As shown, according to some embodiments of the present application, the busbar connected to the fuse 50 includes: an upper busbar section 31 and a lower busbar section 32, the lower busbar section 32 and the lower busbar section 32 are connected through the fuse 50, and the upper busbar section 31 is at least partially flexible.

[0116] In this way, buffering can be achieved through the flexible upper busbar section 31, that is, when the fuse 50 is impacted or vibrates, the upper busbar section 31 can buffer the vibration and impact through its own flexible characteristics, thereby further improving the connection stability and reliability between the fuse 50 and surrounding components.

[0117] In summary, in the embodiment of the present application, the fuse 50 is directly overlapped with the incoming busbar 30, and the incoming busbar 30 is further locked and strengthened by the fixing beam 60 and the fixing member 70. At the same time, a support beam 80 is added to the bottom of the fuse 50 to play a supporting role, and the upper busbar section 31 adopts a flexible member to achieve a soft connection and a buffering effect. It can be ensured that there is no need for transfer between the fuse 50 and the incoming busbar 30, and the overlap point is not subject to cable tension, the busbar size is greatly optimized, and the system capacity can be increased.

[0118] like Figure 6 As shown, according to some embodiments of the present application, the box body 10 further includes a diagonal support rod 12, which is disposed on at least one side of the box body 10 in the second direction, the diagonal support rod 12 is connected to the box body 10, and a first end is connected to one end of the box body 10 in the first direction and extends along a third direction, and a second end is connected to the other end of the box body 10 in the first direction.

[0119] It should be pointed out that the combiner cabinet 100 and the energy storage system 200 of the embodiment of the present application can be applicable to usage scenarios such as offshore platforms, ships, and long-distance transportation. However, in some high-demand usage scenarios, the box body 10 has large vibrations, especially the frame structure of the box body 10 gradually increases its deformation from bottom to top.

[0120] Based on this, the present application further sets an oblique support rod 12 on the support column. The oblique support rod 12 extends obliquely, and the first end is connected to the top end of one support column, and the second end is connected to the bottom end of the other support column. The two support columns define the side of the box body 10.

[0121] In this way, pulling can be achieved between the strong point at the bottom and the weak point at the top of the box 10 to reinforce the weak point at the top, thereby increasing the height and main frequency of the box 10 and improving the vibration resistance of the box 10.

[0122] Furthermore, the box body 10 further includes a transverse brace 13 , which extends along the second direction, and one end of the transverse brace 13 is disposed adjacent to the first end of the diagonal brace 12 .

[0123] Therefore, the connection between the two support columns can be achieved through the cross brace 13, and the coordination between the diagonal brace 12 and the cross brace 13 can be achieved, so as to further improve the rigidity and main frequency of the box body 10.

[0124] like Figure 1As shown, the present application proposes an energy storage system 200, including: the combiner cabinet 100 in the above embodiment.

[0125] Other structures and operations of the combiner cabinet 100 and the energy storage system 200 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

[0126] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0127] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A combiner cabinet, characterized in that: include: Box (10); A circuit breaker (20), the circuit breaker (20) being arranged in the box (10); an incoming busbar (30) and an outgoing busbar (40), wherein the incoming busbar (30) and the outgoing busbar (40) are both arranged in the box (10) and connected to the circuit breaker (20), and are suitable for controlling the on / off of the incoming busbar (30) and the outgoing busbar (40) through the circuit breaker (20); in In a first direction, the incoming busbar (30) and the outgoing busbar (40) are located at one end of the circuit breaker (20); in a second direction, the incoming busbar (30) and the outgoing busbar (40) are arranged relative to each other and extend along a third direction and are connected to cables along the third direction; the first direction, the second direction and the third direction are all different and have an angle with each other.

2. The combiner cabinet according to claim 1, characterized in that: The combiner cabinet further comprises: a fuse (50), the fuse (50) being arranged in the box (10) and connected to the incoming busbar (30) or the outgoing busbar (40), a fixed beam (60) being arranged on the box (10), the fixed beam (60) extending along a second direction and having two ends connected to the box (10), the incoming busbar (30) and the outgoing busbar (40) both being connected to the fixed beam (60).

3. The combiner cabinet according to claim 2, characterized in that: There are two fixed beams (60), and the two fixed beams (60) are arranged opposite to each other in the third direction, and both ends of the incoming busbar (30) and both ends of the outgoing busbar (40) are connected to the fixed beams (60).

4. The combiner cabinet according to claim 2 or 3, characterized in that: The fixed beam (60) is provided with a mounting groove (a), and at least parts of the outgoing busbar (40) and the incoming busbar (30) extend into the mounting groove (a); the incoming busbar (30) and the outgoing busbar (40) have through holes, and the fixed beam (60) is provided with the through holes.

5. The combiner cabinet according to claim 4, characterized in that: The combiner cabinet further comprises a fixing member (70), wherein the fixing member (70) is connected to the fixing beam (60), and fixing members (70) are provided on both sides of the outgoing busbar (40) or the incoming busbar (30) in the second direction so as to clamp and fix the outgoing busbar (40) or the incoming busbar (30).

6. The combiner cabinet according to claim 5, characterized in that: The fixing member (70) comprises: a first plate (71) and a second plate (72) connected to each other, the first plate (71) being connected to the fixing beam (60), and the second plates (72) of adjacent fixing members (70) being arranged opposite to each other in the second direction.

7. The combiner cabinet according to claim 2, characterized in that: The combiner cabinet further comprises: a support beam (80), the support beam (80) being connected to the box body (10), and the support beam (80) being located on one side of the fuse (50) in the first direction and being suitable for supporting the fuse (50).

8. The combiner cabinet according to claim 7, characterized in that: A column (11) is provided on the box body (10), and the column (11) is connected to the support beam (80) at one end of the support beam (80) away from the fuse (50).

9. The combiner cabinet according to claim 2, characterized in that: The incoming busbar (30) and the outgoing busbar (40) are arranged in pairs, and there is at least one pair, each pair of the outgoing busbar (40) and the incoming busbar (30) corresponds to one fuse (50), and a plurality of pairs of the incoming busbar (30) and the outgoing busbar (40) are arranged at intervals in the second direction.

10. The combiner cabinet according to claim 9, characterized in that: A connecting beam (90) is also provided on the box body (10), and one end of the outgoing busbar (40) and the incoming busbar (30) connected to the circuit breaker (20) are both connected to the connecting beam (90).

11. The combiner cabinet according to claim 10, characterized in that: Busbars adjacent to the connection beam (90) and not connected to the fuse (50) are arranged on both sides of the connection beam (90) in the third direction.

12. The combiner cabinet according to claim 2, characterized in that: The busbar connected to the fuse (50) comprises an upper busbar section (31) and a lower busbar section (32), the lower busbar section (32) and the lower busbar section (32) are connected via the fuse (50), and the upper busbar section (31) is at least partially flexible.

13. The combiner cabinet according to claim 1, characterized in that: The box body (10) further comprises an oblique support rod (12), wherein the oblique support rod (12) is arranged on at least one side of the box body (10) in the second direction, the oblique support rod (12) is connected to the box body (10), and a first end of the oblique support rod (12) is connected to one end of the box body (10) in the first direction and extends along a third direction, and a second end of the oblique support rod (12) is connected to the other end of the box body (10) in the first direction.

14. The combiner cabinet according to claim 13, characterized in that: The box body (10) further comprises a transverse brace (13), wherein the transverse brace (13) extends along a second direction, and one end of the transverse brace (13) is arranged adjacent to the first end of the diagonal brace (12).

15. An energy storage system, characterized in that: include: The combiner cabinet according to any one of claims 1 to 14.

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