Energy storage busbar cabinet

Abstract

The utility model provides a kind of energy storage busbar cabinet, wherein, multiple branch circuit breakers are arranged in the middle of upper cloth space. A busbar circuit breaker is further arranged in the lower cloth space. The output end of each branch circuit breaker is connected with the busbar circuit breaker, i.e. the branch circuit breaker can control the output of multiple branch circuit breakers after busbar connection, so that the power output of the energy storage busbar cabinet is controlled by the breaking condition of the busbar circuit breaker itself. The multi-input cable of the cabinet body enters the cabinet body from the first side bottom, and the output busbar extends out of the cabinet body from the bottom of the second side of the cabinet body, so that the power-in end and the power-out end of the cabinet body are both at a low position. On the one hand, it can effectively prevent the operating personnel from accidentally touching the live cable, and on the other hand, it facilitates the burial of the multi-input cable and the cable connected with the output busbar, further reducing the risk of electric shock.

Description

Technical Field

[0001] This utility model relates to the field of energy storage devices, and in particular to an energy storage combiner cabinet. Background Technology

[0002] A power system comprises multiple supporting devices, including energy storage systems, current combiners, control systems, and inverters. The effective use and storage of electrical energy depends on the coordinated operation of these devices. For large-scale grid-connected power generation systems, the voltage of the energy storage system must match the grid voltage. Given a fixed voltage, the more energy storage systems connected to the grid, the higher the system's energy capacity and the greater the current. Current combiners enable the combining of current from multiple energy storage devices. These combiners typically utilize energy storage combiner cabinets, which contain busbars, circuit breakers, and other components. The current from multiple energy storage systems converges on the busbars before being output to the downstream equipment.

[0003] However, some conventional energy storage combiner cabinets still have some shortcomings. On the one hand, a large area of ​​the cables connecting the combiner cabinet to the upstream energy storage equipment is exposed in spaces that workers may touch, posing a risk of electric shock. On the other hand, some energy storage combiner cabinets have haphazard internal layouts and messy wiring, resulting in a large overall size and footprint, making them unsuitable for placement and use in space-constrained locations. Summary of the Invention

[0004] One object of the present invention is to overcome at least one deficiency in the prior art and to provide an energy storage combiner cabinet.

[0005] A further objective of this invention is to allow multiple input cables to enter the cabinet from the bottom of the first horizontal side, and the output busbar to extend from the second horizontal end of the cabinet. This allows both the input and output ends of the cabinet to be close to the ground, enabling the input and output cables to be routed underground outside the cabinet, thus ensuring the safety of operators.

[0006] Another further objective of this invention is to adopt a numerical arrangement and multi-layer architecture to make efficient use of the space inside the energy storage combiner cabinet and save the overall footprint of the energy storage combiner cabinet.

[0007] Specifically, the present invention provides an energy storage combiner cabinet, comprising: a cabinet body, internally defining an upper mounting space and a lower mounting space; a plurality of branch circuit breakers, spaced apart in the upper mounting space; multiple input cables extending into the cabinet body from the bottom of a first transverse side and extending upward along the sidewall of the first transverse side to the upper mounting space, each input cable being used to connect the input terminal of a branch circuit breaker to an external energy storage device; a combiner circuit breaker disposed in the lower mounting space, its input terminal being connected to the output terminals of the plurality of branch circuit breakers, controlling the power output of the energy storage combiner cabinet by its own switching action; and an output busbar extending downward from the output terminal of the combiner circuit breaker and extending out of the cabinet body from the bottom of a second transverse side.

[0008] Optionally, multiple branch circuit breakers are arranged in one or more rows, with a corresponding busbar provided on the underside of each row of branch circuit breakers.

[0009] Optionally, multiple branch circuit breakers are arranged in multiple rows; multiple input cables are input from the upper end of multiple branch circuit breakers, and the lower end of multiple branch circuit breakers is connected to the corresponding busbar; the energy storage combiner cabinet also includes: a busbar connection plate, which is arranged longitudinally on the second horizontal side near the cabinet body, for connecting multiple rows of busbars together to collect the electrical energy output from multiple branch circuit breakers and deliver it to the combiner circuit breaker.

[0010] Optionally, the energy storage combiner cabinet also includes a busbar, which is used to connect the bottommost busbar in a multi-row of busbars to a busbar circuit breaker.

[0011] Optionally, the energy storage combiner cabinet also includes a current transformer, which is installed on the combiner busbar and is used to collect the current passing through the combiner busbar.

[0012] Optionally, the energy storage combiner cabinet also includes a connecting busbar, which is longitudinally arranged between each row of branch circuit breakers and the corresponding busbar, for connecting the output terminals of the busbar and the branch circuit breakers.

[0013] Optionally, the lower component space includes a protection device arrangement space near the first lateral side of the cabinet and a circuit breaker arrangement space near the second lateral side of the cabinet. The busbar circuit breaker is arranged in the circuit breaker arrangement space, and the energy storage busbar cabinet also includes a protection component, which is arranged in the protection device arrangement space.

[0014] Optionally, the energy storage combiner cabinet also includes: metering instruments, which are installed on the upper side of the protection device arrangement space and are used to display the measured current and voltage values.

[0015] Optionally, the protection component includes: an upper space, which houses a low-voltage fuse and a terminal block; wherein the low-voltage fuse is used to protect metering instruments; and the busbar and metering instruments are connected via the terminal block; the protection component also includes: a lower space, which houses a surge protection device; the surge protection device is used to protect a circuit composed of multiple busbars.

[0016] Optionally, the energy storage combiner cabinet also includes: a support plate, which is arranged parallel to the upper side of the combiner bus, and the two lateral sides of the support plate are fixedly connected to the first lateral side and the second lateral side of the cabinet to support multiple branch circuit breakers.

[0017] The energy storage combiner cabinet provided by this utility model has multiple input cables extending into the cabinet from the bottom of the first horizontal side, and the output busbar extending out of the cabinet from the bottom of the second horizontal side. This makes it easier to bury the external wiring of the energy storage combiner cabinet, avoiding contact between workers and the external wiring, and reducing the risk of electric shock.

[0018] Furthermore, by arranging multiple branch circuit breakers in multiple rows in the upper component space and rationally arranging the busbar circuit breakers and protection components in the lower component space, the internal components of the energy storage combiner cabinet can be arranged in an orderly manner and save floor space.

[0019] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0020] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0021] Figure 1 This is a front view of an energy storage combiner cabinet according to an embodiment of the present utility model;

[0022] Figure 2 This is an electrical schematic diagram according to an embodiment of the present invention. Detailed Implementation

[0023] This utility model provides an energy storage combiner cabinet 10. Figure 1This is a front view of an energy storage combiner cabinet 10 according to an embodiment of the present invention. The energy storage combiner cabinet 10 of this embodiment generally includes a cabinet 100, multiple branch circuit breakers 210, combiner circuit breakers 310, and an output bus 380. The cabinet 100 is used to house the internal components of the energy storage combiner cabinet 10, and generally includes an upper component space 200 and a lower component space 300. Multiple branch circuit breakers 210 are arranged at intervals in the upper component space 200. A multi-input cable 370 extends from the bottom of the first horizontal side 110 of the cabinet 100 into the cabinet 100, and then extends upward along the first horizontal side 110 of the cabinet 100 into the upper mounting space 200. It connects the input terminal 211 of a branch circuit breaker 210 to an external energy storage device 20. The external energy storage device 20 is generally a power supply device upstream of the energy storage combiner cabinet 10, used to supply power to the multi-branch circuit breaker 210. The combiner circuit breaker 310 is located in the lower mounting space 300, and its input terminal 311 is connected to the output terminals 212 of multiple branch circuit breakers 210. By controlling the opening and closing of the combiner circuit breaker 310, the output of power by the energy storage combiner cabinet 10 can be controlled. The output busbar 380 extends downward from the output terminal 312 of the busbar 310, is located in the lower mounting space 300, and extends from the bottom of the second transverse side 120 of the cabinet 100. In the energy storage busbar 10 of this embodiment, since the multiple input cables 370 enter the cabinet 100 from the bottom of the first side 110, and the output busbar 380 extends from the bottom of the second side 120, both the power input and output ends of the cabinet 100 are positioned at a low level. This arrangement effectively prevents workers from accidentally touching live cables and facilitates the burial of the multiple input cables 370 and the cables connected to the output busbar 380, further reducing the risk of electric shock.

[0024] It should be noted that the horizontal designations "first side 110" and "second side 120" of cabinet 100 should be understood as follows: the first side 110 is where the external energy storage device 20 inputs electrical energy into cabinet 100 via input cable 370; correspondingly, the second side 120 is where electrical energy is output from cabinet 100 to the outside of cabinet 100 via output bus 380 after passing through the busbar. Figure 1 The multi-input cable 370 is located at the bottom of the first side 110, and the output bus 380 is located at the bottom of the second side 120. The first side 110 and the second side 120 can also be understood as the inner surfaces of two oppositely arranged cabinets 100 within the cabinet 100.

[0025] Furthermore, when selecting the branch circuit breaker 210 and the bus circuit breaker 310, a comprehensive consideration should be given to factors such as the required current and voltage values ​​and the load conditions before making a selection. A certain margin should also be reserved based on the circuit load current. For example, a circuit breaker with a rated current of 1.2-1.5 times the load current should be selected to avoid frequent false tripping and, while ensuring safety, to avoid unnecessary impact on the bus operation.

[0026] Furthermore, to facilitate better connection between the downstream electrical equipment 30 and the output bus 380 of the energy storage combiner cabinet 10, holes can be opened on the output bus 380 extending out of the cabinet 100, allowing the cables of the downstream electrical equipment 30 to be connected to the output bus 380 via bolts. The output bus 380 can also be connected to the downstream electrical equipment 30 of the energy storage combiner cabinet 10 via clips or connecting terminals. This provides better connection convenience between the downstream electrical equipment 30 and the output bus 380, allowing operators to flexibly configure the electrical equipment 30 connected to the output bus 380.

[0027] In some embodiments, the multiple circuit breakers in the upper mounting space 200 are arranged in one or more rows, so that the internal space of the cabinet 100 can be fully utilized. Arranging as many circuit breakers as possible in a limited space allows the energy storage combiner cabinet 10 to combine current with more external energy storage devices 20, thereby improving the current combining capacity of the energy storage combiner cabinet 10. Furthermore, a corresponding busbar 220 is provided on the lower side of each row of branch circuit breakers 210, which allows the electrical energy output from multiple branch circuit breakers 210 corresponding to the busbar 220 to be combined through the busbar 220. This not only simplifies the circuit connection structure, but also provides greater reliability than combining current through traditional cables.

[0028] It should be noted that the busbars 220 exist in groups, meaning that each row of branch circuit breakers 210 in the diagram corresponds to one group of busbars 220. The number of busbars 220 in each group depends on the number of terminals at the input terminals 211 and the output terminals 212 of the branch circuit breakers 210. Figure 1 Taking the branch circuit breaker 210 shown as an example, it has four input terminals and four output terminals. The number of busbars 220 corresponding to each group of busbars 220 should be four. The four busbars 220 are connected to the output terminals 212 of the corresponding branch circuit breaker 210, so that the electrical energy can be transmitted from the branch circuit breaker 210 to the busbar breaker 310 via the busbars 220.

[0029] In some embodiments, multiple branch circuit breakers 210 are arranged in multiple rows, and multiple input cables 370 are input from the upper ends of the multiple branch circuit breakers 210, while the lower ends of the multiple branch circuit breakers 210 are connected to the corresponding busbars 220. That is, the multiple input cables 370 extend upward along the side wall of the first transverse side 110 of the cabinet 100 into the upper mounting space 200, and are input from the upper ends of the corresponding branch circuit breakers 210. The lower ends of the branch circuit breakers 210 are connected to the busbars 220. In other words, the upper end of the branch circuit breaker 210 is the input terminal 211, and the lower end is the output terminal 212. This arrangement allows the input electrical energy to be collected from top to bottom inside the cabinet 100 and finally extend out of the cabinet 100 through the bottom of the second transverse side 120. It also makes the internal device layout of the cabinet 100 clear and the power flow orderly. The input terminal 211 and output terminal 212 of the branch circuit breaker 210 are clearly distinguished. When a fault occurs in a certain input cable 370, the corresponding branch circuit breaker 210 can be quickly located. By closing this branch circuit breaker 210, the impact of the fault on the entire bus system can be reduced.

[0030] In addition, the energy storage combiner cabinet 10 also includes a busbar connection plate 230. The busbar connection plate 230 is disposed in the upper mounting space 200 near the second horizontal side 120 of the cabinet 100 and extends longitudinally along the second side 120 of the cabinet 100. It is used to connect multiple rows of busbars 220 together and combine the electrical energy of the multiple rows of busbars 220. That is, the electrical energy passing through multiple rows of branch circuit breakers 210 is combined on the busbar connection plate 230, and then the busbar connection plate 230 is connected to the circuit breaker 310 to realize the collection of electrical energy output from multiple branch circuit breakers 210 to the circuit breaker 310, and then output to the outside of the cabinet 100.

[0031] In some embodiments, the energy storage combiner cabinet 10 further includes a busbar 240, which is located below the bottommost row of busbars 220. This means that after multiple rows of busbars 220 are connected together via a busbar connecting plate 230, the combined electrical energy is transmitted to the combiner circuit breaker 310 through the busbar 240. The busbar 240 is generally longitudinally positioned near the second side 120 inside the cabinet 100, connecting the bottommost row of busbars 220 in the upper mounting space 200 to the combiner circuit breaker 310 in the lower mounting space 300. The length of the busbar 240 can be specifically set according to actual factors such as the number of busbars 220, the size of the space inside the cabinet 100, and the specific location of the combiner circuit breaker 310. For example, when there is only one row of busbars 220, the internal space of the cabinet 100 is relatively large, and the busbar circuit breaker 310 is located relatively close to the bottom, the bottom row of busbars 220 is relatively far from the busbar circuit breaker 310. Therefore, the busbar 240 needs to be set longer so that the bottom row of busbars 220 and the busbar circuit breaker 310 can be connected together through the busbar 240, so that electrical energy can be transmitted to the outside of the energy storage combiner cabinet 10.

[0032] In some embodiments, the energy storage combiner cabinet 10 further includes a current transformer 330, which is mounted on the busbar 240. By collecting the current on the busbar 240, the operator can accurately determine the magnitude of the current output by the energy storage combiner cabinet 10. The current transformer 330 is generally fitted onto the busbar 240, and has an opening at its center. The busbar 240 passes through the central opening of the current transformer 330, allowing the current transformer 330 to accurately collect the magnitude of the current passing through the busbar 240. Since the busbar 240 is arranged longitudinally along the internal space of the cabinet 100 and the current transformer 330 is sleeved on the busbar 240, the current transformer 330 may slide due to gravity or become loose and fall off due to vibration of the working environment. Screws or clips can be used to fix the current transformer 330 to the busbar 240.

[0033] In some embodiments, the energy storage combiner cabinet 10 further includes a connecting bar 260, which is longitudinally arranged between each row of branch circuit breakers 210 and their corresponding busbars 220. That is, the output terminal 212 of each branch circuit breaker 210 is connected to its corresponding busbar 220 via the connecting bar 260. This makes the connection layout of each branch circuit breaker 210 and its corresponding busbar 220 readily apparent, resulting in a clearer internal structure, more efficient space utilization, improved overall aesthetics and tidiness, and easier inspection and maintenance in the future.

[0034] Furthermore, if the connecting strip 260 is exposed inside the cabinet 100, there may be a risk of short circuit. For example, if a foreign object appears inside the cabinet 100, causing a short circuit between two connecting strips 260, it may damage the busbar system. Insulating isolation devices (not shown in the figure) can be installed between adjacent connecting strips 260, such as insulating foam, to prevent short circuits between them. Alternatively, insulating varnish can be applied to the connecting strips 260, or insulating sleeves can be installed externally to avoid the risk of short circuits between them. Correspondingly, any of the above-mentioned insulation methods can also be used for insulation isolation at the input terminal 211 of the branch circuit breaker 210 to prevent short circuit faults in the busbar system inside the cabinet 100, which could damage the entire busbar system.

[0035] In some embodiments, the lower component space 300 is provided with a protection device arrangement space 360 ​​and a circuit breaker arrangement space 320. The protection device arrangement space 360 ​​is located on the first horizontal side 110 of the cabinet 100, specifically at a lower position near the first horizontal side 110 of the cabinet 100. The circuit breaker arrangement space 320 is located at a lower position near the second horizontal side 120 of the cabinet 100. The arrangement of the protection device arrangement space 360 ​​and the circuit breaker arrangement space 320 on the left and right sides of the lower component space 300 makes more efficient use of the internal space of the cabinet 100. Furthermore, the segmented arrangement of each electrical module facilitates operation by operators and fault location by maintenance personnel during use and maintenance of the energy storage combiner cabinet 10. A protection component 340 is also provided in the protection device arrangement space 360 ​​to protect the circuit safety, protecting the entire combiner system's circuit safety in the event of overvoltage, overload, or short circuit.

[0036] In some embodiments, the energy storage combiner cabinet 10 further includes a metering instrument 350, which is disposed on the upper side of the protection component 340 and is used to display the measured current and voltage values. Specifically, the metering instrument 350 is connected to the current transformer 330 to display the current value collected by the current transformer 330; additionally, the metering instrument 350 is also connected to the busbar 240 to measure and display the voltage value at the busbar 240. Furthermore, the metering instrument 350 can be connected to any point on the busbar 240, busbar 220, and busbar connection plate 230, depending on... Figure 1 As can be seen, the multiple branch circuit breakers 210 are connected in parallel. Therefore, the voltage value at any point on the busbar 240, busbar 220, and busbar connection plate 230 should be the same, which allows the operator to select the connection position of the metering instrument 350 according to the actual work needs.

[0037] In some embodiments, the protection component 340 includes an upper space 341 and a lower space 342. The upper space 341 contains a low-voltage fuse 343 and a terminal block 344, while the lower space 342 contains a surge protection device 345. The low-voltage fuse 343 protects low-voltage components in the busbar system, such as the metering instrument 350. When the current or load in the metering instrument 350 circuit is abnormal, it can promptly disconnect the circuit to prevent damage to the metering instrument 350. The terminal block 344 provides a centralized connection point in the circuit, allowing wires from different electrical devices or lines to be connected together, enabling current to flow between different parts and achieving a complete circuit connection. It also makes wiring neater and more standardized, facilitating installation and maintenance by construction and maintenance personnel. A surge protection device 345 is installed in the lower space 342 to protect the combiner system and reduce the risk of electric shock to personnel. When a surge voltage occurs in the combiner system, the surge energy can be diverted in time to reduce the impact on the equipment. The surge protection device 345 generally includes a surge protector and a high-voltage fuse. The appropriate surge protector and high-voltage fuse model can be selected according to the relevant electrical parameters in the actual operation of the energy storage combiner cabinet 10.

[0038] Furthermore, dividing the protection component 340 into an upper space 341 and a lower space 342 facilitates wiring and electrical connections between devices, making the internal structure of the entire protection component 340 more compact and improving space utilization. This is especially suitable for scenarios with limited space, such as electrical equipment or energy storage combiner cabinets 10. Moreover, the design of the upper and lower spaces 342 provides a certain degree of isolation, preventing the arc and high temperature generated when the low-voltage fuse 343 blows from affecting the surge protection device 345 in the lower layer. At the same time, it also avoids the electromagnetic interference generated by the surge protection device 345 during operation from adversely affecting the normal operation of the low-voltage fuse 343 and terminal block 344, thus improving the stability and reliability of the entire protection component 340.

[0039] Furthermore, some space can be reserved within the protection component 340 for installing an EMS (Energy Management System) power supply. This makes the operation of the energy storage combiner cabinet 10 more intelligent. The EMS power supply can directly control the operating strategy of the combiner system and monitor any anomalies during system operation, providing rapid equipment protection.

[0040] In some embodiments, the energy storage combiner cabinet 10 further includes a support plate 250, which is horizontally disposed in the upper component space 200 and parallel to the upper side of the busbar 220. The two sides of the support plate 250 are connected to the first horizontal side 110 and the second horizontal side 120 of the cabinet 100, respectively, and multiple branch circuit breakers 210 are fixed on the support plate 250. The number of support plates 250 should correspond to the number of busbars 220, that is, a plurality of branch circuit breakers 210 are disposed on one support plate 250, and a corresponding busbar 220 should be disposed on the lower side of the support plate 250 to combine the electrical energy passing through the plurality of branch circuit breakers 210 on the support plate 250 and transmit it to the busbar 310. The support plate 250 can be connected to the first horizontal side 110 and the second horizontal side 120 of the cabinet 100 by screws or clips. The branch circuit breaker 210 can also be connected to the support plate 250 by screws or clips. In this way, the arrangement of the branch circuit breaker 210 can be clearly seen, the direction of power is clear at a glance, and it forms a layered structure with the busbar 220, which can achieve efficient power collection.

[0041] It should be noted that, as described above, busbar 220 exists in a group configuration. Correspondingly, output busbar 380, busbar connection plate 230, and busbar 240 also exist in a group configuration. Figure 1Taking the main view of the energy storage combiner cabinet 10 shown as an example, since the input terminal 211 and output terminal 212 of the branch circuit breaker 210 both have four terminals, the corresponding number of output busbars 380, busbar connection plates 230, and busbars 240 in each group of output busbars 380, busbar connection plates 230, and busbars 240 should all be four. The fact that the input terminal 211 and output terminal 212 of the branch circuit breaker 210 shown have four terminals is merely an example. Those skilled in the art can set up branch circuit breakers 210 corresponding to the actual number of input cables 370, and further determine the number of output busbars 380, busbar connection plates 230, and busbars 240 in each group of output busbars 380, busbar connection plates 230, and busbars 240 based on the number of terminals of the branch circuit breaker 210.

[0042] The eight branch circuit breakers 210 shown in the figure are merely an example. Those skilled in the art can adjust the number of branch circuit breakers 210 and the number of carrier plates 250 on each row of carrier plates 250 according to the actual required output power to meet different power output needs.

[0043] To facilitate understanding of the present invention by those skilled in the art, the technical solution of the present invention can be further explained based on the electrical schematic diagram. Figure 2 This is an electrical schematic diagram according to an embodiment of the present invention, such as... Figure 2 As shown, in one embodiment of this utility model, the electrical energy from multiple external energy storage devices 20 is transmitted to the input terminals 211 of multiple branch circuit breakers 210 via multiple input cables 370. After passing through the branch circuit breakers 210, the output terminals 212 of the multiple branch circuit breakers 210 are connected to the busbar 220, and the electrical energy is then combined and transmitted to the input terminal 311 of the busbar 310. After passing through the busbar 310, the electrical energy is transmitted to the external electrical equipment 30 from the output terminal 312 of the busbar 310. Before the electrical energy is transmitted to the busbar 310, the current value after convergence can be collected by a current transformer 330 installed on the busbar 240. A metering instrument 350 is communicatively connected to the current transformer 330, and the current value collected by the current transformer 330 can be displayed on the metering instrument 350 so that the operator can easily know the current value. The metering instrument 350 can also be connected to the busbar 220, busbar 240, or busbar connection plate 230 to measure the bus voltage value. Furthermore, a low-voltage fuse 343 can be installed according to actual usage to protect the metering instrument 350 from damage in case of abnormal current. Further, a surge protection device 345 can be installed in the bus system to absorb surge energy in a timely manner when a surge voltage occurs in the bus system, thereby reducing the impact on the equipment.

[0044] according to Figure 2 The energy storage combiner cabinet 10, designed according to the electrical schematic diagram shown, can combine multiple external energy storage devices 20, achieving the overall output of the multiple external energy storage devices 20. The number of branch circuit breakers 210 can be selected based on actual power demand. Assuming each external energy storage device 20 has a power of 200kW, when an output of 1.6MkW is required, eight external energy storage devices 20 can be combined to obtain the electrical energy needed to meet the output power.

[0045] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

[0046] In the description of this disclosure, it should be understood that the terms "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0047] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] Unless otherwise specified, all terms used in the description of this disclosure (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0049] In the description of this disclosure, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Those skilled in the art should understand that the embodiments described below are merely some embodiments of the present invention, and not all embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

Claims

1. An energy storage combiner cabinet, characterized in that... include: The cabinet has internally defined upper and lower fabric storage spaces. Multiple branch circuit breakers are arranged at intervals in the upper component space; Multiple input cables extend into the cabinet from the bottom of the first horizontal side of the cabinet and extend upward along the side wall of the first horizontal side of the cabinet to the upper mounting space. Each input cable is used to connect the input terminal of one of the branch circuit breakers to an external energy storage device. A combiner circuit breaker is installed in the lower component space, and its input terminal is connected to the output terminal of the multiple branch circuit breakers. It controls the power output of the energy storage combiner cabinet by its own interruption. The output busbar extends downward from the output terminal of the busbar circuit breaker and extends out of the cabinet from the bottom of the second lateral side of the cabinet.

2. The energy storage combiner cabinet according to claim 1, characterized in that, The multiple branch circuit breakers are arranged in one or more rows, and a corresponding busbar is provided on the lower side of each row of branch circuit breakers.

3. The energy storage combiner cabinet according to claim 2, characterized in that, The multiple branch circuit breakers are arranged in multiple rows; The multiple input cables are input from the upper end of the multiple branch circuit breakers, and the lower end of the multiple branch circuit breakers is connected to the corresponding busbar; The energy storage combiner cabinet also includes: Busbar connection plate, which is arranged longitudinally on the second horizontal side near the cabinet, is used to connect multiple rows of busbars together so as to collect the electrical energy output by the multiple branch circuit breakers and send it to the busbar circuit breaker.

4. The energy storage combiner cabinet according to claim 3, characterized in that, Also includes: A busbar, which is used to connect the lowest busbar among multiple busbars to the busbar circuit breaker.

5. The energy storage combiner cabinet according to claim 4, characterized in that, Also includes: A current transformer is installed on the busbar to collect the current passing through the busbar.

6. The energy storage combiner cabinet according to claim 2, characterized in that, Also includes: A connecting bar is longitudinally arranged between each row of branch circuit breakers and the corresponding busbar, for connecting the output terminals of the busbar and the branch circuit breakers.

7. The energy storage combiner cabinet according to claim 1, characterized in that, The lower component space includes a protective device arrangement space near the first lateral side of the cabinet and a circuit breaker arrangement space near the second lateral side of the cabinet. The busbar circuit breaker is arranged within the circuit breaker arrangement space, and the energy storage busbar cabinet also includes: The protection component is disposed within the space where the protection device is arranged.

8. The energy storage combiner cabinet according to claim 7, characterized in that, Also includes: A metering instrument is installed on the upper side of the space where the protection device is arranged, and is used to display the measured current and voltage values.

9. The energy storage combiner cabinet according to claim 8, characterized in that, The protection component includes: The upper space contains a low-voltage fuse and a terminal block; wherein the low-voltage fuse is used to protect the metering instrument; and the busbar and the metering instrument are connected through the terminal block; The lower space contains a surge protection device for protecting the circuit composed of the multiple busbars.

10. The energy storage combiner cabinet according to claim 1, characterized in that, Also includes: A support plate is arranged parallel to the upper side of the busbar, and the two lateral sides of the support plate are fixedly connected to the first lateral side and the second lateral side of the cabinet to support the multiple branch circuit breakers.

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