Energy storage direct current side convergence cabinet

Abstract

The utility model relates to the related technical field of integrated cabinets, and provides an energy storage direct current side confluence cabinet, which comprises a cabinet body, a frame attached to the inner wall of the cabinet body, and partition plates for separating the space of the cabinet body, the interior of the cabinet body is divided into a plurality of interval spaces from top to bottom through the partition plates, and the interval spaces are used for integrated arrangement of components in the power distribution cabinet, the switch cabinet, the UPS cabinet and the communication control cabinet. The frame comprises transverse rods and stand columns, a plurality of installation points are arranged on the transverse rods and the stand columns at equal intervals, and the transverse rods and the stand columns are connected through the installation points to form the frame for installing all component devices. The cabinet is internally provided with the mounting frame of a quick-release plugging structure, a power distribution cabinet, a switch cabinet, a UPS cabinet and a communication control cabinet can be integrated, a wiring structure is optimized, functions of multiple devices are integrated in the same cabinet, and the integration level, maintainability and reliability of the system are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of integrated cabinet, specifically, it relates to a storage energy direct current side busbar cabinet. BACKGROUND

[0002] The statements in this part only provide background technical information related to the utility model and do not necessarily constitute prior art.

[0003] In a large energy storage system, in order to realize efficient busbar connection, stable power distribution, communication control and emergency power supply of key equipment, multiple independent devices and control cabinets are usually needed, including but not limited to the following key equipment:

[0004] Busbar cabinet: used for busbar connection of DC current output by multiple PACK (battery pack) to power PCS (power conversion system) or high-voltage DC equipment.

[0005] Power distribution cabinet: used for power distribution and control, usually equipped with circuit breaker, surge protector and electric energy metering device.

[0006] Switch cabinet: used for placing network switch and switch power supply, supporting data communication of BMS (battery management system) and EMS (energy management system).

[0007] UPS cabinet: used for placing uninterruptible power supply (UPS) and UPS battery, providing emergency power supply for key control equipment (such as video monitoring, fire fighting system and BMS / EMS system).

[0008] Communication control cabinet: used for connecting BMS, EMS and other control signals, responsible for signal management and transmission, ensuring communication and data synchronization of each subsystem.

[0009] In the existing energy storage system, the technical scheme of independent busbar cabinet, switch cabinet, UPS cabinet and communication control cabinet can realize basic energy storage control and management function, but there are many problems such as multiple devices, large space occupation, complex wiring, high maintenance difficulty and so on. Multiple devices are independently set, occupying a large amount of limited space in the energy storage DC cabin, resulting in low space utilization, which is not conducive to miniaturization and high-density deployment. The complex wiring and long path form a large number of potential failure points, which is difficult to ensure the stability and reliability of the system. The control and management are scattered, which increases the operation complexity and operation and maintenance cost. UTILITY MODEL CONTENT

[0010] The utility model discloses in order to solve above -mentioned problem, propose a kind of energy storage dc side busbar cabinet, by, in the cabinet is provided with the mounting frame of quick detachable plug structure, can integrate switch board, switch cabinet, UPS cabinet and communication control cabinet, and optimization wiring structure, the function of multiple equipment is integrated in same cabinet, significantly improve the integration of system, maintainability and reliability.

[0011] In order to achieve the above object, the utility model adopts the following technical scheme:

[0012] One or more embodiments provide an energy storage dc side busbar cabinet, comprising a cabinet body, a frame arranged on the inner wall of the cabinet body, a partition plate separating the space of the cabinet body;

[0013] The interior of the cabinet body is formed into multiple spaced spaces from top to bottom by the partition plate, for integratedly arranging the constituent devices in the switch board, switch cabinet, UPS cabinet and communication control cabinet;

[0014] The frame comprises a horizontal rod and a vertical column, multiple mounting points are arranged on the horizontal rod and the vertical column at equal intervals, and the horizontal rod and the vertical column are connected by the mounting points to form a frame for mounting the constituent devices.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The frame is provided with screw holes arranged at equal intervals, the number of horizontal rods can be changed at will, different structures of frames are formed, flexible assembly and rapid installation are realized, the position of the horizontal rod is adjusted according to the size and interval distance of the arranged devices, the flexibility of device arrangement is improved, the position of each device is reasonably arranged according to the size of space, the rationalization of internal device arrangement is realized, and the frame structure of the embodiment can realize free expansion of modular devices.

[0017] The advantages of the utility model and additional aspects will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification constitute part of this utility model and are included to further provide a general understanding of the utility model. The exemplary embodiments of the utility model and their description serve to explain the utility model, and do not constitute limitations on the utility model.

[0019] Figure 1 is the three-dimensional structure schematic view of the energy storage dc side busbar cabinet of the utility model embodiment;

[0020] Figure 2 is the three-dimensional structure schematic view of the energy storage dc side busbar cabinet of the utility model embodiment, which is provided with example constituent devices;

[0021] Figure 3is a structural schematic view of the U-shaped wire slot 5 of the embodiment of the utility model;

[0022] Figure 4 is a structural schematic view of the frame 8 of the embodiment of the utility model;

[0023] Among them: 1, cabinet, 2, spacing, 3, circuit breaker, 4, busbar, 5, U-shaped wire slot, 6, cabinet door, 7, UPS power supply box, 8, frame, 9, partition, 10, lifting ring 11, terminal block;

[0024] 5-1, U-shaped body, 5-2, gap, 5-3, comb tooth, 5-4, open end, 5-5, mounting hole;

[0025] 8-1, upright, 8-2, crossbar, 8-3, screw hole. DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with the drawings and embodiments.

[0027] It should be noted that the following detailed description is exemplary and is intended to provide further description of the utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the utility model belongs.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or their combination. It should be noted that the various embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The embodiments will be described in detail below in combination with the drawings.

[0029] Technical term explanation:

[0030] PACK: battery energy storage term, is the basic unit of the battery energy storage system, the Chinese name is battery pack, mainly composed of battery pack, conductive row, primary BMS (battery voltage equalization board), sealed housing + liquid cooling heat dissipation bottom plate (liquid cooling scheme) or temperature control fan + perforated housing (air cooling scheme).

[0031] Multi-cluster PACK bus: PACK is connected in series in a cluster, for example, 10 PACKs are connected in series in a cluster. Clusters are connected in parallel, and multi-cluster PACK bus refers to the parallel connection of multiple clusters.

[0032] Distribution: Energy storage power system is divided into primary and secondary side. The primary side refers to the high-voltage circuit of the energy storage battery side, and generally large energy storage is direct current 1000V-1500V; the secondary side refers to the low-voltage circuit for power supply to the equipment in the cabin except the battery, generally it is three-phase 380V AC and single-phase 220V AC.

[0033] Distribution cabinet: After the distribution incoming line, the molded case circuit breaker is used as the total opening, the lightning protection grounding device (surge protector) is used as the lightning protection, the electric meter is used as the metering, the small molded case circuit breaker is used as the branch protection, and finally the distribution terminal is connected to each electric appliance.

[0034] Switch: Network communication equipment, generally used for EMS and energy storage DC cabin video monitoring external communication.

[0035] Switch cabinet: Generally used to place the switch and the switch power supply.

[0036] UPS: Uninterruptible power supply, generally with a tower type with an external battery, a tower type UPS with a computer case appearance, a 2U, 4U case with an external battery, and a server main machine appearance.

[0037] UPS is generally used as emergency power supply for key equipment such as DC cabin fire extinguishing system, video monitoring system, switch, BMS system, EMS, etc. The power supply time is more than 30 minutes, which does not have long-time power supply function and will not supply power to large power consumption electric appliances such as refrigeration units and air conditioners.

[0038] UPS cabinet: Place the UPS host and the UPS battery cabinet, and the UPS battery is a lead-acid battery or a gel lead-acid battery.

[0039] BMS: Battery energy management system, three-level architecture:

[0040] The first level BMS is responsible for balancing the battery voltage and sending the collected voltage and battery temperature data to the second level BMS.

[0041] The second level BMS is responsible for collecting all first level BMS information of a single battery cluster and controlling the on-off and tripping of the high-voltage box, and collecting cluster voltage and cluster current data, and sending the information collected by the first level BMS and the information in the high-voltage box to the third level BMS.

[0042] The third level BMS is responsible for collecting and recording the data transmitted by the second level BMS and controlling other equipment in the cabin, such as access control system, air conditioning system, liquid cooling unit start-stop, etc. Receive signals for EMS scheduling, provide EMS with internal information for inquiry, etc.

[0043] EMS: energy storage monitoring and intelligent energy management system, responsible for processing three-level BMS data, responsible for starting and stopping signals to PCS, with networking function, can connect local network and Internet through wired network or use 4G communication.

[0044] PCS: energy storage converter, used to connect the grid and the DC cabin, which can convert the DC power of the DC cabin battery pack into AC power for the grid, and also can convert the grid power into DC power for the DC cabin battery pack.

[0045] Communication control cabinet: responsible for connecting the communication signal and control signal of each system.

[0046] Example 1

[0047] In one or more embodiments of the disclosed technical solutions, as shown in Figures 1 to 4 A DC side busbar cabinet for energy storage, comprising a cabinet body 1, a frame 8 arranged on the inner wall of the cabinet body 1, and a partition plate 9 separating the cabinet space;

[0048] The inside of the cabinet 1 is divided into multiple spaced spaces 2 from top to bottom by the partition plate 9, which is used to integrate the components in the power distribution cabinet, switch cabinet, UPS cabinet and communication control cabinet;

[0049] The frame 8 includes a horizontal rod 8-2 and a vertical column 8-1, and a plurality of mounting points are arranged on the horizontal rod 8-2 and the vertical column 8-1 at equal intervals, and the horizontal rod 8-2 and the vertical column 8-1 are detachably connected through the mounting points to form a frame for arranging the components.

[0050] In some embodiments, the mounting method of the frame can not only use the bolt fixing method, but also use the buckle type and slide rail type connection method, so as to realize quick assembly and disassembly.

[0051] Preferably, the bolt fixing method can be used, and a plurality of threaded holes 8-3 are arranged on the horizontal rod 8-2 and the vertical column 8-1 at equal intervals, and the threaded holes 8-3 are arranged at the mounting points to realize detachable connection.

[0052] In this embodiment, the threaded holes are arranged on the frame 8 at equal intervals, the number of horizontal rods 8-2 can be changed at will, and frames of different structures are formed, so as to realize flexible assembly and quick installation; the position of the horizontal rod 8-2 can be adjusted according to the size and spacing distance of the arranged components, so as to improve the flexibility of component arrangement, so as to reasonably arrange the position of each component according to the size of the space, realize the rationalization of internal component arrangement, and the frame structure of this embodiment can realize the free expansion of modular components.

[0053] The above scheme is to set a partition 9 inside the cabinet body 1, and divide the internal space into multiple interval spaces 2 from top to bottom, each interval space 2 is used to place power distribution equipment, communication control equipment, switch equipment and UPS uninterruptible power supply equipment. The advantage of this modular design is that the components of each function are isolated in the respective interval space 2, avoiding signal interference, heat accumulation and other problems;

[0054] Further, the number and position of the partition 9 can be adjusted according to the user's customization needs. For example, if the user does not need to configure the UPS equipment, part of the partition can be removed or the position and height of the partition can be adjusted to meet the specific needs of the customer.

[0055] The edge of the interval space 2 is provided with a tooth-shaped U-shaped wire slot 5 for fixing cables and wires, ensuring the orderliness and safety of wiring.

[0056] A specific implementation, the U-shaped wire slot 5 includes a U-shaped body 5-1, two sides of the U-shaped body 5-1 are respectively provided with comb-shaped teeth 5-3, and a gap 5-2 is arranged between adjacent comb-shaped teeth 5-3;

[0057] Optionally, the U-shaped body 5-1 includes a flat bottom plate, a side wall vertically extending from the bottom plate, and the height of the side wall is determined according to the size of the wire to provide sufficient support space to prevent the wire from falling off or shifting.

[0058] Further, the width of a single comb-shaped tooth 5-3 is equal to the gap 5-2 between the comb-shaped teeth 5-3;

[0059] The U-shaped body 5-1 can be used to support the entire wire slot structure and can be fixed on the inner wall of the cabinet, the partition 9 or the frame 8 by screws, welding or bonding, etc. to provide a stable installation foundation.

[0060] In this embodiment, the bottom plate of the U-shaped body 5-1 is flat, and the flat design ensures the firmness of the wire slot structure. Preferably, mounting holes 5-5 are provided on the bottom plate of the U-shaped body 5-1, and the hole positions of the mounting holes correspond to the positions of the mounting points on the frame.

[0061] The top of the tooth-shaped structure is provided with an opening to form an entrance for easy insertion of the cable, so that the cable can be easily inserted into the U-shaped wire slot 5 by pressing, and the opening has a certain elasticity to firmly hold cables of different diameters;

[0062] In one implementation, a guide structure is provided at the opening end 5-4 of the U-shaped wire slot 5, the top end is provided with a first inclined surface and a second inclined surface, the first inclined surface extends upward and outward, the second inclined surface extends downward and outward, and the lower end of the second inclined surface is connected to the comb-shaped tooth 5-3.

[0063] Cables drawn from the input / output terminals of each module or device are all gathered into the U-shaped wire slot 5, and are fixed in the wire slot 5 using cable fixing clamps (such as cable ties);

[0064] Further, for devices with more connections, a terminal row 11 can be provided to draw the cables.

[0065] Further, the cabinet body 1 is provided with a cabinet door 6, and the cabinet door is further provided with a state indicating lamp and a display screen setting area, which can be used to set the display screen of the BMS and the display screen of the EMS.

[0066] Optionally, the sidewall of the cabinet body 1 can be further provided with a heat dissipation hole, which can adopt a downward inclined grid structure;

[0067] Specifically, in order to realize the hoisting of the cabinet body 1, the top surface of the cabinet body 1 is provided with a lifting ring 10.

[0068] As shown in Figure 2 the figure is a schematic diagram of setting multiple devices in the cabinet, which is only an example and cannot limit the present scheme. In the figure, the electrical devices or components of each cabinet that need to be integrated can be replaced to form the integration of various cabinets. In the present embodiment, the constituent devices in the power distribution cabinet, the switch cabinet, the UPS cabinet and the communication control cabinet are integrated. The connection circuit of each constituent device is prior art, and the present embodiment does not improve the connection circuit inside the cabinet, which will not be described here.

[0069] In the present embodiment, the constituent devices of the UPS cabinet, the communication control cabinet and the power distribution cabinet are sequentially arranged from top to bottom inside the cabinet body 1.

[0070] Specifically, the constituent devices of the UPS cabinet include a UPS power supply box 7 and a UPS host; the UPS power supply box 7 and the UPS host are fixed on the partition plate 9 by placing a UPS battery rack;

[0071] One of the technical solutions that can be implemented is to provide a heat dissipation fan on the top of the cabinet body 1.

[0072] In the present embodiment, the constituent devices of the UPS cabinet are arranged at the topmost end, which can improve the heat dissipation effect of the power supply and improve the safety and stability of the operation of the power supply device.

[0073] The constituent devices of the communication control cabinet are arranged in the middle region of the cabinet body 1, including an integrated BMS, an indicating lamp and an emergency stop button, which are responsible for the monitoring, display and control of the battery management system (BMS) and the energy management system (EMS).

[0074] The indicating lamp and the emergency stop button are connected to the cabinet door 6 of the cabinet body 1 through wires.

[0075] In the embodiment, the switches of the switch cabinet are arranged on the side wall of the cabinet body 1 and are slidably fixed to the inner wall surface of the cabinet body 1 through the slide rail component.

[0076] In the embodiment, the constituent devices of the communication control cabinet are arranged at the bottom, including the circuit breaker 3 and the busbar 4, the busbar 4 is arranged at the lower end of the circuit breaker 3, and the partition plate 9 is arranged between the circuit breaker 3 and the busbar 4, so that the efficient distribution of electric energy and the circuit protection function can be realized.

[0077] In the embodiment, the main heating components are arranged at the bottom end and the top end of the cabinet, so that the heat dissipation effect of the cabinet body 1 can be improved, and the stability and service life of the internal devices of the cabinet can be improved.

[0078] In the embodiment, the arrangement of the internal structure of the cabinet body can realize the optimization of the wiring in the cabinet body, can realize the regional wiring, hierarchical separation and slot design, can ensure the separation of power lines, signal lines and communication lines, reduce the physical intersection and electromagnetic interference (EMI) between the cables, and make the wiring path clear and orderly.

[0079] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model, and for the skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

[0080] Although the specific embodiments of the utility model are described above in combination with the drawings, it is not a limitation on the protection scope of the utility model, and the skilled in the art should understand that various modifications or changes made by the skilled in the art on the basis of the technical scheme of the utility model without creative labor are still within the protection scope of the utility model.

Claims

1. An energy storage DC side bus cubicle, characterized in that: The utility model relates to a cabinet, which comprises a cabinet body, a frame arranged on the inner wall of the cabinet body, and a partition plate separating the space of the cabinet body. The space inside the cabinet body is divided into multiple spaced spaces from top to bottom by the partition plate, and the components in the power distribution cabinet, the switch cabinet, the UPS cabinet and the communication control cabinet are integrated. The frame comprises horizontal rods and vertical columns, multiple mounting points are arranged on the horizontal rods and the vertical columns at equal intervals, and the horizontal rods and the vertical columns are connected by the mounting points to form a frame for mounting the components.

2. The energy storage DC side bus cabinet according to claim 1, characterized in that: Multiple mounting holes are arranged on the horizontal rods and the vertical columns at equal intervals.

3. The energy storage DC side bus cabinet according to claim 1, characterized in that: A toothed U-shaped wire slot is arranged on the edge of each spaced space.

4. The energy storage DC side bus cabinet according to claim 3, characterized in that: The U-shaped wire slot comprises a U-shaped body, two sides of the U-shaped body are respectively provided with comb-shaped teeth, and a gap is arranged between adjacent comb-shaped teeth.

5. The energy storage DC side bus cubicle of claim 4, wherein: The width of a single comb-shaped tooth is equal to the width of the gap between the comb-shaped teeth.

6. The energy storage DC side bus cubicle of claim 3, wherein: The U-shaped body is used for supporting the entire wire slot structure and is fixed on the inner wall of the cabinet body, the partition plate or the frame by screwing, welding or bonding.

7. The energy storage DC side bus cubicle of claim 4, wherein: A guide structure is arranged at the opening end of the U-shaped wire slot, a first inclined surface and a second inclined surface are arranged at the top end, the first inclined surface extends upward and outward, the second inclined surface extends downward and outward, and the lower end of the second inclined surface is connected to the comb-shaped teeth.

8. The energy storage DC side bus cubicle of claim 1, wherein: A cabinet door is arranged on the cabinet body, a state indicator lamp and a display screen arrangement area are arranged on the cabinet door.

9. The energy storage DC side bus cubicle of claim 1, wherein: A heat dissipation hole can also be arranged on the side wall of the cabinet body, and the heat dissipation hole can adopt a downward inclined grid structure.

10. The energy storage DC side bus cubicle of claim 4, wherein: The components of the UPS cabinet, the communication control cabinet and the power distribution cabinet are arranged in the cabinet body from top to bottom.

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