An energy storage system cabinet

Abstract

An energy storage system cabinet relates to the technical field of electric energy storage, which comprises a cabinet body, the cabinet body is divided into two parts by a partition plate, one part of the cabinet body is used for installing energy storage units, and the other part of the cabinet body is used for installing control electrical elements; the side of the cabinet body is connected with a distribution box through a quick connection assembly, wherein the quick connection assembly comprises a hanger fixedly installed on the side of the cabinet body and a hook fixedly installed on the distribution box, and the hanger and the hook are correspondingly clamped; the input end of the distribution box is electrically connected with a generator and a photovoltaic system respectively, and the output end of the distribution box is electrically connected with the energy storage unit; the problem of cost increase and land waste caused by the unchanged external size of the traditional cabinet when applied in some scenes is solved.

Description

Technical Field

[0001] The utility model relates to the field of power energy storage technology, specifically to an energy storage system cabinet. Background Technology

[0002] Currently, the demand for energy storage systems is gradually shifting towards integrated photovoltaic and energy storage systems. However, photovoltaic power generation suffers from intermittency and volatility, requiring the integration of energy storage and backup power sources to ensure continuous power supply. For scenarios such as islands, border base stations, and mining areas, as well as high-reliability microgrids such as hospitals and data centers, a hybrid system of "photovoltaics + energy storage + generator" is needed to achieve 24-hour uninterrupted power supply.

[0003] Currently, energy storage system cabinets typically include a battery compartment for installing battery modules and an electrical compartment for installing control electrical components. Due to the diverse functional requirements of customers for energy storage systems, which often include grid power, generator power, and photovoltaic power connected to the system, the required functions vary depending on the scenario. Since the electrical compartment is configured with control electrical components for all functions, this results in larger energy storage system cabinets. This is suitable for scenarios with comprehensive functional requirements, but for scenarios with less comprehensive functional requirements, large cabinets leave a lot of unused space, leading to increased costs and wasted land.

[0004] Therefore, we propose a rack that can reduce the size of the rack and adapt to different scenarios. Utility Model Content

[0005] The purpose of this utility model is to provide an energy storage system cabinet that solves the problem of increased costs and wasted land when traditional cabinets are applied in certain scenarios without changing their external dimensions.

[0006] This utility model is achieved through the following technical solution: An energy storage system cabinet includes a cabinet body, which is divided into two parts by a partition. One part of the cabinet is used to install energy storage units, and the other part is used to install control electrical components. A distribution box is connected to the side of the cabinet body via a quick-connect assembly, wherein the quick-connect assembly includes a bracket fixedly installed on the side of the cabinet body and a hook fixedly installed on the distribution box, and the bracket and the hook are correspondingly snapped together. The input end of the distribution box is electrically connected to a generator and a photovoltaic system, respectively, and the output end of the distribution box is electrically connected to the energy storage units.

[0007] Furthermore, the control electrical components include a first grid circuit breaker and a load circuit breaker, wherein the input terminal of the first grid circuit breaker is connected to the grid-side cable, the output terminal of the first grid circuit breaker is electrically connected to the energy storage unit, the output terminal of the energy storage unit is electrically connected to the load circuit breaker, and the output terminal of the load circuit breaker is connected to the load-side cable.

[0008] Furthermore, the control electrical component also includes a bypass circuit breaker, the input terminal of which is connected to the power grid side cable, and the output terminal of which is connected to the load side cable.

[0009] Furthermore, the hanging rack includes a top rod, side rods, and a bottom rod, wherein the top of both ends of the top rod is provided with insertion holes, and the insertion holes are engaged with the head end of the hook; the back of both ends of the top rod are fixedly connected to one side rod, and the two side rods are fixedly installed on the side of the cabinet, and the bottom of the two side rods are fixedly connected to both ends of the bottom rod.

[0010] Furthermore, side plates are fixedly installed on both ends of the base rod, and these side plates are used to be fixedly connected to the tail end of the hook by bolts.

[0011] Furthermore, the distribution box includes a generator circuit breaker, a photovoltaic circuit breaker, and an ATS switching switch. The input terminal of the generator circuit breaker is electrically connected to the output terminal of the generator, the input terminal of the photovoltaic circuit breaker is electrically connected to the output terminal of the photovoltaic system, the output terminals of both the generator circuit breaker and the photovoltaic circuit breaker are electrically connected to the ATS switching switch, and the output terminal of the ATS switching switch is electrically connected to the energy storage unit.

[0012] Furthermore, the cabinet has a wiring channel on its side, with one end of the wiring channel connected to the distribution box and the other end extending to the wiring hole in the cabinet.

[0013] Furthermore, the model number of the ATS switching switch is WATSN 4P.

[0014] The technical solution of this utility model has at least the following advantages and beneficial effects: This utility model discloses an energy storage system cabinet. By designing the power distribution box as a detachable structure and selecting and installing it according to actual functional requirements, the overall size of the cabinet is effectively reduced, manufacturing costs are lowered, and space waste is avoided. Furthermore, the quick-connect components make the installation and disassembly of the power distribution box more convenient, improving the cabinet's flexibility and applicability, especially suitable for various application scenarios with different functional requirements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the control electrical component of this utility model; Figure 3 This is a schematic diagram of another structure of the control electrical component of this utility model; Figure 4 This is a schematic diagram of the control box structure of this utility model; Figure 5 This is a schematic diagram of the hanging bracket structure of this utility model; Figure 6 This is a schematic diagram of the hook structure of this utility model.

[0016] Reference numerals: 1. Cabinet; 2. Partition; 3. Control electrical components; 31. First power grid circuit breaker; 32. Load circuit breaker; 33. Bypass circuit breaker; 4. Quick-connect assembly; 41. Hanger; 411. Top rod; 412. Side rod; 413. Bottom rod; 414. Side plate; 42. Hook; 5. Distribution box; 51. Generator circuit breaker; 52. Photovoltaic circuit breaker; 53. ATS changeover switch; 54. Second power grid circuit breaker; 6. Cable tray. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Example 1 like Figures 1-6 The energy storage system cabinet shown includes a cabinet 1, which is divided into two parts by a partition 2, specifically left and right cavities. One part of the cabinet 1 is used to install energy storage units, and the other part of the cabinet 1 is used to install control electrical components 3. It should be noted that the energy storage unit includes an energy storage battery pack and a BMS battery system. The energy storage battery pack is used to receive and store electricity from the grid side, photovoltaic system and generator, while the BMS battery system controls the power output of the energy storage unit to the load side. In addition, the control electrical component 3 includes a first grid circuit breaker 31 and a load circuit breaker 32. The input terminal of the first grid circuit breaker 31 is connected to the grid-side cable, the output terminal of the first grid circuit breaker 31 is electrically connected to the energy storage unit, the output terminal of the energy storage unit is electrically connected to the load circuit breaker 32, and the output terminal of the load circuit breaker 32 is connected to the load-side cable. That is, the first grid circuit breaker 31 is used to control the charging of the energy storage unit by the grid side, while the load circuit breaker 32 is used to control the discharging of the energy storage unit to the load side. In addition, the control electrical component 3 also includes a bypass circuit breaker 33. The input terminal of the bypass circuit breaker 33 is connected to the power grid side cable, and the output terminal of the bypass circuit breaker 33 is connected to the load side cable. When the bypass circuit breaker 33 is closed, the power grid side can directly supply power to the load side, which makes it convenient for staff to maintain the energy storage unit. Since the cabinet 1 is divided into two parts, the safety of staff when maintaining the energy storage unit is also higher.

[0019] The side of the cabinet 1 is connected to the power distribution box 5 via a quick-connect assembly 4. The quick-connect assembly 4 includes a bracket 41 fixedly installed on the side of the cabinet 1 and a hook 42 fixedly installed on the power distribution box 5. The bracket 41 and the hook 42 are snapped together. The quick-connect assembly 4 makes the installation and removal of the power distribution box 5 more convenient, improves the flexibility and applicability of the cabinet, and is especially suitable for various application scenarios with different functional requirements. Furthermore, the hanging rack 41 includes a top rod 411, side rods 412, and a bottom rod 413. The top rod 411 has insertion holes at both ends, which are engaged with the heads of hooks 42. The back ends of both ends of the top rod 411 are fixedly connected to one side rod 412, and the two side rods 412 are fixedly installed on the sides of the cabinet 1. The bottom ends of the two side rods 412 are fixedly connected to both ends of the bottom rod 413. The top rod 411, the two side rods 412, and the bottom rod 413 together form a rectangular frame structure. The connection between the hanging rack 41 and the hooks 42 is completed by vertically inserting the heads of the hooks 42 into the insertion holes. The bottom of the hooks 42 is located at the bottom rod 413. It should be noted that after installation, the hooks 42 correspond to the positions of the side rods 412. In addition, side plates 414 are fixedly installed on both ends of the base rod 413. The side plates 414 are used to be fixedly connected to the tail end of the hook 42 by bolts, so as not to affect the quick connection between the bracket 41 and the hook 42, and to ensure the firmness of the connection between the two.

[0020] The input terminals of the distribution box 5 are electrically connected to the generator and the photovoltaic system, respectively, and the output terminals of the distribution box 5 are electrically connected to the energy storage unit. As needed, the distribution box 5 includes a generator circuit breaker 51, a photovoltaic circuit breaker 52, and an ATS switch 53. The input terminal of the generator circuit breaker 51 is electrically connected to the output terminal of the generator, the input terminal of the photovoltaic circuit breaker 52 is electrically connected to the output terminal of the photovoltaic system, and the output terminals of both the generator circuit breaker 51 and the photovoltaic circuit breaker 52 are electrically connected to the ATS switch 53. The output terminal of the ATS is electrically connected to the energy storage unit. That is, the distribution box 5 can receive power from the photovoltaic system and the generator, and then switch between the two types of power through the ATS switch 53. In particular, the model of the ATS switch 53 is WATSN4P. In addition, the distribution box 5 also includes a second grid circuit breaker 54, which enables the distribution box 5 to connect to the grid side, photovoltaic system and generator power.

[0021] Example 2 As one embodiment, the cabinet 1 is provided with a cable tray 6 on the side. One end of the cable tray 6 is connected to the distribution box 5, and the other end extends to the cable tray hole of the cabinet 1. The cable tray 6 can effectively protect the cables output by the distribution box 5.

[0022] It should be noted that when the cabinet needs to use off-grid mode to supply power to the load side, the distribution box 5 and the first grid circuit breaker 31 in the cabinet 1 will be removed, leaving only the load circuit breaker 32. Thus, only the energy storage unit is used to discharge to the load side. However, the cabinet's footprint is still the same as that of the cabinet 1, and the space inside the cabinet 1 is not wasted. When the cabinet needs to supply power to the load side in a non-off-grid mode, only the distribution box 5 will be removed, and the energy storage unit will be used to discharge to the load side. The energy storage unit can also be charged by the grid side. However, the cabinet's footprint is still the same as that of cabinet 1, so there is no issue of increased cost. When the cabinet needs to use an off-grid + photovoltaic system and generator to jointly generate power to the load side, all of them are retained. However, the grid side cable is connected to the second grid circuit breaker 54 of the distribution box 5, and the energy storage unit is used to discharge to the load side. The grid side, generator or photovoltaic system can be selected to charge the energy storage unit through the ATS switching switch 53.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An energy storage system cabinet, characterized by, The system includes a cabinet (1), which is divided into two parts by a partition (2). One part of the cabinet (1) is used to install energy storage units, and the other part of the cabinet (1) is used to install control electrical components (3). The side of the cabinet (1) is connected to a distribution box (5) via a quick-connect assembly (4). The quick-connect assembly (4) includes a bracket (41) fixedly installed on the side of the cabinet (1) and a hook (42) fixedly installed on the distribution box (5). The bracket (41) and the hook (42) are correspondingly snapped together. The input end of the distribution box (5) is electrically connected to the generator and the photovoltaic system, respectively, and the output end of the distribution box (5) is electrically connected to the energy storage unit.

2. The energy storage system cabinet of claim 1, wherein: The control electrical component (3) includes a first grid circuit breaker (31) and a load circuit breaker (32), wherein the input terminal of the first grid circuit breaker (31) is connected to the grid-side cable, the output terminal of the first grid circuit breaker (31) is electrically connected to the energy storage unit, the output terminal of the energy storage unit is electrically connected to the load circuit breaker (32), and the output terminal of the load circuit breaker (32) is connected to the load-side cable.

3. The energy storage system cabinet of claim 2, wherein: The control electrical component (3) also includes a bypass circuit breaker (33), the input end of which is connected to the power grid side cable, and the output end of which is connected to the load side cable.

4. The energy storage system cabinet of claim 1, wherein: The hanging bracket (41) includes a top rod (411), a side rod (412) and a bottom rod (413). The top rod (411) has insertion holes at both ends, and the insertion holes are engaged with the head end of the hook (42). The back ends of the top rod (411) are fixedly connected to the side rod (412) respectively, and the two side rods (412) are fixedly installed on the side of the cabinet (1). The bottom of the two side rods (412) is fixedly connected to the two ends of the bottom rod (413) respectively.

5. The energy storage system cabinet according to claim 4, characterized in that: Both ends of the bottom rod (413) are fixedly mounted with side plates (414), which are used to be fixedly connected to the tail end of the hook (42) by bolts.

6. The energy storage system cabinet according to claim 1, characterized in that: The distribution box (5) includes a generator circuit breaker (51), a photovoltaic circuit breaker (52), and an ATS switch (53). The input terminal of the generator circuit breaker (51) is electrically connected to the output terminal of the generator, the input terminal of the photovoltaic circuit breaker (52) is electrically connected to the output terminal of the photovoltaic system, the output terminals of the generator circuit breaker (51) and the photovoltaic circuit breaker (52) are both electrically connected to the ATS switch (53), and the output terminal of the ATS switch (53) is electrically connected to the energy storage unit.

7. The energy storage system cabinet according to claim 6, characterized in that: The cabinet (1) has a wiring trough (6) on its side. One end of the wiring trough (6) is connected to the distribution box (5), and the other end extends to the wiring hole of the cabinet (1).

8. The energy storage system cabinet according to claim 6, characterized in that: The ATS switching switch (53) is model WATSN 4P.

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