A 157 kWh rack-mounted energy storage cabinet

Abstract

The application relates to the technical field of energy storage cabinets, and discloses a 157kWh rack type energy storage cabinet which comprises a supporting piece, a plurality of rack groups arranged horizontally are arranged on the supporting piece, the rack group comprises a plurality of racks arranged in a vertical direction, the adjacent racks are detachably connected, an installation cavity is arranged in each rack, and a battery pack and a high-voltage box are respectively arranged in the installation cavity in a sliding mode, a plurality of parallel battery packs are designed, the capacity expansion can be realized by adding the parallel racks and adding new battery packs in the racks, the energy storage cabinet can meet the demand of different capacities, quick capacity expansion and flexible configuration can be realized, and the modules can be added or reduced according to the capacity demand, so that different capacity demands can be met.

Description

Technical Field

[0001] This application relates to the technical field of energy storage cabinets, and in particular to a 157kWh rack-mounted energy storage cabinet. Background Technology

[0002] With the rapid development of industry and commerce, the demand for energy storage equipment is increasing. As an important energy storage device, industrial and commercial energy storage cabinets can efficiently manage electrical energy, optimize energy utilization, and improve power supply reliability. They help industrial and commercial users reduce electricity costs and improve energy efficiency, which is of great significance to the stable operation and sustainable development of industry and commerce.

[0003] Currently, conventional industrial and commercial energy storage cabinet systems typically include core components such as battery packs, power conversion systems (PCS), and battery management systems (BMS). To achieve the storage and release of electrical energy, the traditional approach is to configure these components in a fixed manner. When it is necessary to increase the energy storage capacity, the system is often reconfigured or rebuilt. Moreover, battery packs and PCS are often not disassembled or replaceable. When encountering changes in capacity demand, it is difficult to add or remove modules as needed. The traditional approach is to expand the capacity by replacing the entire energy storage cabinet or external equipment, which makes it difficult to achieve rapid capacity expansion and flexible configuration, resulting in poor flexibility and an inability to adapt well to different capacity requirements. Summary of the Invention

[0004] To facilitate the expansion of energy storage cabinets, a 157kWh rack-mounted energy storage cabinet is provided.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: A 157kWh rack-mounted energy storage cabinet includes a support member, on which several horizontally arranged rack groups are provided. Each rack group includes several vertically arranged racks, and adjacent racks are detachably connected. Each rack has an installation cavity, and a battery pack and a high-voltage box are slidably arranged in the installation cavity.

[0006] By adopting the above technical solution and using a multi-row parallel battery pack design, the capacity can be expanded by adding parallel racks and adding new battery packs within the racks. This allows the energy storage cabinet to meet different capacity requirements, enabling rapid capacity expansion and flexible configuration. Furthermore, modules can be added or removed as needed according to capacity requirements to adapt to different capacity demands.

[0007] Preferably, the battery packs at the bottom or top of two adjacent rack groups are connected in series, the adjacent battery packs within a single rack group are connected in series, and the two ends of the high-voltage box are electrically connected to the starting battery pack and the ending battery pack of the series connection, respectively.

[0008] By adopting the above technical solutions, two battery packs at the bottom or top of adjacent rack groups are connected in series, and adjacent battery packs within a single rack group are connected in series, realizing the plug-and-play functionality of modular battery packs and high-voltage boxes. When it is necessary to add or remove battery packs, this series plug-and-play design can significantly improve the modularity of the energy storage cabinet.

[0009] Preferably, it also includes a fixing member, which is used for threaded connection between two adjacent frames and for threaded connection between the frame and the support member. A wire harness piece is fixedly connected to the fixing member, and the wire harness piece has a wire harness hole for wires to pass through.

[0010] By adopting the above technical solution, the fastener is threadedly connected to two adjacent frames in the vertical direction, which serves to fix the adjacent frames and enhance the stability of the frame connection; the wire harness and wire harness hole on the fastener can organize and constrain the wires, making the wires more neatly arranged and easier to maintain and manage.

[0011] Preferably, the high-voltage box integrates a circuit breaker, a contactor, a fuse, and a BCU battery control unit.

[0012] By adopting the above technical solution, traditional industrial and commercial energy storage cabinets typically use independent layouts for battery packs, PCS, and BMS, resulting in large size and complex wiring. This energy storage cabinet integrates circuit breakers, contactors, fuses, and BCU battery control units within the high-voltage box, integrating multiple key components in a single module, thus achieving integrated electrical protection, protection, and control functions.

[0013] Preferably, a cooling fan is provided at one end of the battery pack that slides into the mounting cavity.

[0014] By adopting the above technical solution, a single cooling fan can dissipate heat for a single battery pack, improving the heat dissipation efficiency of the end of each battery pack that slides into the mounting cavity, and ensuring the stable operation of the battery pack.

[0015] Preferably, it also includes protective covers over the battery pack and high-voltage box, the number of which is equal to the number of racks, and the protective covers are connected to the racks.

[0016] By adopting the above technical solution, the protective cover covering the battery pack and high voltage box can protect the battery pack and high voltage box from damage by external factors.

[0017] Preferably, the protective cover has several ventilation holes on its surface.

[0018] By adopting the above technical solution, the vents can ensure air circulation, which helps to dissipate heat and further improves the heat dissipation performance of the battery pack and high-voltage box.

[0019] Preferably, the outer wall of the protective cover has a wire-passing opening along the vertical direction.

[0020] By adopting the above technical solution, the outer wall of the protective cover is opened with a wire-passing hole in the vertical direction, which facilitates the passage of wires, makes wiring and connection easier, and further improves the convenience and flexibility of the energy storage cabinet.

[0021] Preferably, it also includes a top plate, which is used to connect the top of several rack assemblies. A sliding plate is slidably connected to the top plate, and the sliding plate slidably covers the cable entry of the top protective cover.

[0022] By adopting the above technical solution, the top plate is connected to the top of several rack groups and a component that slides on the top plate to cover the cable entry opening of the top protective cover can be used to shield and protect the cable entry opening, preventing debris or dust from entering the cable entry opening and affecting the internal circuit. At the same time, the component on the top plate can be slid to expose the cable entry opening for circuit operation as needed, which improves the convenience of use and the safety of the circuit.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The horizontally arranged rack groups on the support can be added independently. When the capacity needs to be increased, only one row of rack groups needs to be added to the support. There is no need to modify the existing structure. Multiple vertically arranged racks are connected by fasteners within a single rack group. If the capacity of a single row needs to be increased, rapid expansion and flexible configuration can be achieved to adapt to different capacity requirements. 2. Two battery packs at the bottom or top of two adjacent rack groups are connected in series, and adjacent battery packs within a single rack group are connected in series. When it is necessary to add or remove battery packs, this plug-and-play design can significantly improve the modularity of the energy storage cabinet. Attached image description: Figure 1 Schematic diagram of rack-mounted energy storage cabinet Figure 1 ; Figure 2 A schematic diagram of the installation structure of the battery pack and high-voltage box; Figure 3 This is a schematic diagram of an explosion between the protective shield and the frame; Figure 4 Schematic diagram of rack-mounted energy storage cabinet Figure 2 ; Figure 5 This is a schematic diagram of the internal structure of the high-voltage box; Figure 6 This is a schematic diagram of the fastener structure in Example 2; Figure 7 This is a schematic diagram of the sliding plate installation in Example 2.

[0024] Reference numerals: 1. Support component; 2. Frame assembly; 21. First frame assembly; 22. Second frame assembly; 23. Third frame assembly; 24. Frame; 25. Mounting cavity; 3. Top plate; 31. Slide rail; 4. Fixing component; 41. Cable tie; 42. Cable tie hole; 5. Battery pack; 51. Cooling fan; 52. Cable inlet; 53. Cable outlet; 54. End battery pack; 55. Start battery pack; 6. High voltage box; 61. Circuit breaker; 62. Contactor; 63. Fuse; 64. BCU battery control unit; 65. DC / DC module; 7. Protective cover; 71. Vent hole; 72. Cable entry port; 8. Sliding plate. Detailed implementation method: The following section provides a more detailed description, in conjunction with the accompanying diagrams: Example 1: As attached Figure 1 and attached Figure 2 As shown, a 157kWh rack-mounted energy storage cabinet includes a support member 1, a top plate 3, and a fixing member 4. The support member 1 is provided with several horizontally arranged rack groups 2. Here, the rack groups 2 are divided into a first rack group 21, a second rack group 22, and a third rack group 23. The first rack group 21 and the third rack group 23 are located on both sides of the second rack group 22, respectively. The top plate 3 is a flat plate structure and is used to connect and fix the three rack groups 2 to each other. Lifting lugs are also fixedly connected to the top of the top plate 3 to facilitate the transportation of the energy storage cabinet.

[0025] Support component 1 is the basic structure of the entire energy storage cabinet, which plays the role of supporting and fixing the rack assembly 2. Support component 1 provides a stable support platform for rack assembly 2 and forms an electrical connection point with the ground. The rack assembly 2 includes several racks 24 arranged vertically. Here, a single rack assembly 2 has four connected racks 24. The rack 24 is a rectangular frame formed by connecting several crossbeams and several columns end to end. Two rectangular frames are fixedly connected by crossbeams.

[0026] The fastener 4 is plate-shaped, and the number of fasteners 4 is equal to the number of frames 24. The fasteners 4 are fixed to the lower end of the frames 24 respectively. The fasteners 4 threadedly connect two adjacent frames 24. The fasteners 4 at the bottom end can threadedly connect the bottom frame 24 to the support 1, which further fixes the frame group 2 and the frames 24 and enhances the connection stability between the frames 24.

[0027] As attached Figure 3 and attached Figure 4 As shown, a mounting cavity 25 is provided inside the frame 24. The battery pack 5 and the high voltage box 6 are slidably installed in the mounting cavity 25, making it easier to install and remove the battery pack 5 and the high voltage box 6. The battery pack 5 is used to store electrical energy. The shape design of the battery pack 5 should be adapted to the mounting cavity 25 so that it can slide smoothly into the mounting cavity 25.

[0028] A cooling fan 51 is provided at one end of the battery pack 5 that slides into the mounting cavity 25. The cooling fan 51 can dissipate the heat generated by the battery pack 5 in a timely manner to ensure the normal operating temperature of the battery pack 5. An inlet component 52 and an outlet component 53 are fixedly connected to the end of the battery pack 5 located outside the mounting cavity 25.

[0029] As attached Figure 2 and attached Figure 3 As shown, the battery packs 5 at the bottom or top of two adjacent rack groups 2 are connected in series, and the battery packs 5 adjacent in the vertical direction in a single rack group 2 are connected in series. The high-voltage box 6 slides in the rack 24 at the bottom of the first rack group 21. The battery pack 5 adjacent to the high-voltage box 6 in the first rack group 21 is designated as the end battery pack 54. The battery pack 5 at the top of the third rack group 23 is designated as the starting battery pack 55. One end of the high-voltage box 6 is connected to the inlet 52 of the starting battery pack 55, and the other end of the high-voltage box 6 is connected to the outlet 53 of the end battery pack 54.

[0030] In the third rack group 23, starting from the starting battery pack 55, the batteries are connected in series from top to bottom, and the outgoing wire 53 and incoming wire 52 of adjacent battery packs 5 are connected. The outgoing wire 53 of the bottom battery pack 5 in the third rack group 23 is connected to the incoming wire 52 of the bottom battery pack 5 in the second rack group 22. In the second rack group 22, starting from the bottom battery pack 5, the batteries are connected in series from bottom to top, and the outgoing wire 53 and incoming wire 52 of adjacent battery packs 5 are connected. The outgoing wire 53 of the top battery pack 5 in the second rack group 22 is connected to the incoming wire 52 of the top battery pack 5 in the first rack group 21. In the first rack group 21, starting from the top battery pack 5, the batteries are connected in series from top to bottom, and the outgoing wire 53 and incoming wire 52 of adjacent battery packs 5 are connected.

[0031] As attached Figure 3 and attached Figure 5 As shown, the high-voltage box 6 integrates a circuit breaker 61, a contactor 62, a fuse 63, and a BCU battery control unit 64. The circuit breaker 61 is used to cut off the circuit when a circuit fault occurs, protecting the safety of equipment and personnel; the contactor 62 is used to control the on and off of the circuit, realizing the rational distribution of electrical energy; the fuse 63 is used to melt when the current in the circuit is too large, playing the role of overload protection; the BCU battery control unit 64 is used to monitor and manage the battery pack 5, ensuring the safe and stable operation of the battery pack 5.

[0032] The high-voltage box 6 also houses a DC / DC module 65. One end of the DC / DC module 65 is electrically connected to the battery, and the other end is electrically connected to the circuit breaker 61. It is used to convert and regulate the battery voltage. The DC / DC module 65 is directly connected to the battery and the photovoltaic system. By eliminating the traditional AC / DC conversion stage, the energy path is simplified from "battery → PCS → inverter → load" to "battery → DC / DC module 65 → DC bus". Furthermore, the photovoltaic DC miniature circuit breaker 61 in the high-voltage box 6 supports 1500V high-voltage input and directly connects to the DC / DC module 65 for voltage regulation and conversion. Compared to the traditional photovoltaic → inverter → PCS → battery path, this eliminates the DC / AC inverter stage in the traditional energy storage cabinet, reducing energy loss and significantly increasing conversion efficiency.

[0033] As attached Figure 1 and attached Figure 3 As shown, a 157kWh rack-mounted energy storage cabinet also includes a protective cover 7, which covers the battery pack 5 and the high-voltage box 6. The number of protective covers 7 is equal to the number of racks 24. The protective cover 7 and the battery pack 5 are connected and fixed by bolts from the same mounting hole. The protective cover 7 has a certain protective performance and can prevent dust, moisture and other substances from entering the battery pack 5 and the high-voltage box 6, thus protecting their internal components.

[0034] The protective cover 7 has several ventilation holes 71 on its surface. The ventilation holes 71 can ensure air circulation and help dissipate heat. The outer wall of the protective cover 7 has a wire passage 72 in the vertical direction. The wire passage 72 facilitates the passage of wires and makes wiring and connection easier.

[0035] The implementation principle of this embodiment one: The horizontally arranged rack groups 2 on the support member 1 can be added independently. When the capacity needs to be increased, only one row of rack groups 2 needs to be added to the support member 1 without modifying the existing structure. Multiple vertically arranged racks 24 are connected by fasteners 4 within a single rack group 2. If the capacity of a single row needs to be increased, only one rack 24 needs to be added to the top or bottom of the existing rack group 2 and fixed, realizing "capacity increase by row". The battery pack 5 is installed into the mounting cavity 25 of the rack 24 by sliding. After the rack 24 is added, the new battery pack 5 can be slid in directly. Physical capacity expansion and electrical capacity expansion are completed simultaneously. The battery pack 5 and the high-voltage box 6 adopt a plug-and-play design, which enables the energy storage cabinet to meet the needs of different capacities, realize rapid capacity expansion and flexible configuration, and can also add or remove battery packs 5 as needed to adapt to different capacity requirements.

[0036] Example 2: This second embodiment is an improvement on the first embodiment. The rest of the structure is the same as that of the first embodiment, and will not be described in detail here.

[0037] As attached Figure 6 and attached Figure 7As shown, a wire harness 41 is fixedly connected to the fastener 4. The wire harness 41 has a wire harness hole 42 for wires to pass through. The wire harness hole 42 can organize and constrain the wires, avoid the wires from being messy, and improve the safety and aesthetics of the energy storage cabinet.

[0038] A 157kWh rack-mounted energy storage cabinet also includes a sliding plate 8. Three sets of slide rails 31 are fixedly connected to the top plate 3. The three sets of slide rails 31 are respectively above the three rack groups 2. There are two slide rails 31 in each set, which are arranged opposite each other. The installation direction of the slide rails 31 is consistent with the opening direction of the mounting cavity 25. The sliding plate 8 has an L-shaped plate structure. There are three sliding plates 8 here. The three sliding plates 8 are respectively located above the three rack groups 2. The three sliding plates 8 slide on the three sets of slide rails 31. The three sliding plates 8 slide to cover the wiring port 72 of the top protective cover 7 inside the three rack groups 2 and abut against the top protective cover 7. The sliding plate 8 can shield and protect the wiring port 72 to prevent debris or dust from entering the wiring port 72 and affecting the internal circuit. At the same time, the sliding plate 8 above the corresponding rack group 2 can be slid to expose the wiring port 72 for circuit operation as needed, which improves the convenience of use and the safety of the circuit.

[0039] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of protection claimed in this application.

Claims

1. A 157kWh rack-mounted energy storage cabinet, comprising a support member (1), characterized in that, The support member (1) is provided with several horizontally arranged frame groups (2), the frame group (2) includes several vertically arranged frames (24), and adjacent frames (24) are detachably connected. The frame (24) is provided with an installation cavity (25), and a battery pack (5) and a high voltage box (6) are slidably arranged in the installation cavity (25).

2. The 157kWh rack-mounted energy storage cabinet according to claim 1, characterized in that, The battery packs (5) at the bottom or top of two adjacent rack groups (2) are connected in series, and the adjacent battery packs (5) within a single rack group (2) are connected in series. The two ends of the high voltage box (6) are electrically connected to the starting battery pack (55) and the ending battery pack (54) of the series connection, respectively.

3. The 157kWh rack-mounted energy storage cabinet according to claim 1, characterized in that, It also includes a fastener (4), which is used for threaded connection between two adjacent frames (24) and for threaded connection between the frame (24) and the support (1). A wire harness piece (41) is fixedly connected to the fastener (4), and a wire harness hole (42) is opened on the wire harness piece (41) for wires to pass through.

4. The 157kWh rack-mounted energy storage cabinet according to claim 1, characterized in that, The high-voltage box (6) integrates a circuit breaker (61), a contactor (62), a fuse (63), and a BCU battery control unit (64).

5. A 157kWh rack-mounted energy storage cabinet according to claim 1, characterized in that, A cooling fan (51) is provided at one end of the battery pack (5) that slides into the mounting cavity (25).

6. The 157kWh rack-mounted energy storage cabinet according to claim 1, characterized in that, It also includes protective covers (7) covering the battery pack (5) and the high voltage box (6), the number of which is equal to the number of the frame (24), and the protective covers (7) are connected to the frame (24).

7. A 157kWh rack-mounted energy storage cabinet according to claim 6, characterized in that, The protective cover (7) has several ventilation holes (71) on its surface.

8. A 157kWh rack-mounted energy storage cabinet according to claim 6, characterized in that, The outer wall of the protective cover (7) has a wire-passing opening (72) in the vertical direction.

9. A 157kWh rack-mounted energy storage cabinet according to claim 8, characterized in that, It also includes a top plate (3), which is used to connect the top of several rack groups (2). A sliding plate (8) is slidably connected on the top plate (3), and the sliding plate (8) slides to cover the wire hole (72) of the top protective cover (7).

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