High-integration-level outdoor industrial and commercial energy storage convergence control cabinet

Abstract

The invention discloses a high-integration-level outdoor industrial and commercial energy storage confluence control cabinet. An upper inversion module area, a middle control module area and a lower confluence module area are arranged in a cabinet body. The inversion module is arranged in an inversion module area at the upper part of the cabinet body, is fixedly mounted through an inverter bracket assembly and is used for converting direct current into alternating current; the control module is arranged in a middle control module area of the cabinet body and comprises a BMS control module, a wiring terminal, an alternating current fuse, an intermediate relay, a main incoming line molded case switch and a miniature circuit breaker, the shape of the control module is reduced, and the control module is combined with a PCS frame of the inversion module; and the confluence module is arranged in the lower confluence module area of the cabinet body and comprises a frame isolation switch, a copper bar assembly, an outgoing cable, an outgoing busbar and an incoming busbar, and the incoming cable, the incoming busbar and the outgoing busbar are arranged in a staggered manner. The invention provides a technical solution with remarkable advantages for the development of the industrial and commercial energy storage field.

Description

Technical Field

[0001] The present invention relates to an energy storage control cabinet, and in particular to a highly integrated outdoor industrial and commercial energy storage convergence control cabinet. Background Art

[0002] As the core power distribution equipment in energy storage systems, the convergence control cabinet primarily undertakes key tasks such as current collection, distribution, and safety control to ensure the coordinated operation of multi-power systems and efficient energy management. It can centrally converge the currents of multiple battery clusters, photovoltaic panels, or other power sources to form a unified output, effectively reducing cabling complexity and improving system integration.

[0003] In the commercial and industrial energy storage sector, this system has typical user-side applications, primarily targeting factories, shopping malls, data centers, industrial parks, and other commercial and industrial users. Its core function is to utilize energy storage devices (such as lithium batteries) to store electricity during periods of low demand and release it during peak demand periods, achieving peak-load shifting and valley-filling, thereby reducing electricity costs.

[0004] However, existing energy storage technologies present some pressing challenges. Currently, the convergence, control, and distribution components typically reside in separate cabinets within prefabricated battery compartments. This design results in crowded spaces within the prefabricated compartments, resulting in low space utilization and hindering overall energy density. Summary of the Invention

[0005] In order to solve the shortcomings of the above technologies, the present invention provides a highly integrated outdoor industrial and commercial energy storage and convergence control cabinet.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a highly integrated outdoor industrial and commercial energy storage convergence control cabinet, comprising: The height of the cabinet body extends in the vertical direction, and the interior is divided into three parts in the vertical direction, namely the upper inverter module area, the middle control module area and the lower bus module area; The inverter module is located in the upper inverter module area of ​​the cabinet body and is fixedly installed by the inverter bracket assembly to convert DC power into AC power. The control module is located in the central control module area of ​​the cabinet body and includes the BMS control module, wiring terminals, AC fuses, intermediate relays, main incoming line molded case switches, and miniature circuit breakers. The control module has a reduced size and is integrated with the PCS rack of the inverter module. The busbar module is arranged in the lower busbar module area of ​​the cabinet body, including the frame disconnector, copper busbar assembly, outgoing cable, outgoing busbar, incoming busbar, and incoming cable. The incoming busbar and outgoing busbar are staggered.

[0007] Furthermore, the inverter bracket assembly includes a bracket body connected to the cabinet, and multiple fasteners for fixing the inverter. The bracket body is provided with threaded holes, and the inverter is fixed and locked by the fasteners cooperating with the threaded holes on the bracket body. The rear side of the bracket body is provided with a wire binding bridge-type hole for binding the wiring harness of the inverter.

[0008] Furthermore, the control module is provided with a miniature circuit breaker bracket for installing the miniature circuit breaker, a switching power supply bracket for installing the switching power supply, a BMS mounting plate for installing the BMS control module, and a front panel for installing the display mounting assembly, the emergency stop switch mounting assembly, and the indicator light mounting assembly.

[0009] Furthermore, the frame disconnector of the bus module is installed on the disconnector mounting material, the incoming cable is connected to the incoming bus bar, and the outgoing cable is connected to the outgoing bus bar.

[0010] Furthermore, an air conditioning bracket and air conditioning ventilation holes are provided on the back door of the cabinet, wherein: The air conditioner bracket includes a fixing frame and a plurality of mounting screw holes for mounting the air conditioner; The air conditioning vents are arranged in a matrix to dissipate heat from the air conditioning.

[0011] Furthermore, the power distribution module and the convergence module are fixed to the cabinet through the left panel bracket and the right panel bracket. The left panel bracket and the right panel bracket are respectively arranged on the left and right sides of the front panel, and are connected to the cabinet through bolts to fix the front panel to the cabinet.

[0012] Furthermore, the control module includes an MBMS module, a BAMS battery management module and a BMU module, wherein: The terminals of the BAMS battery management module are connected to the MBMS module via a linear connection; The other end of the BAMS battery management module is connected to the BMU module through a linear connection.

[0013] Furthermore, the MBMS module includes a monitoring unit, a communication unit, and a calculation unit, wherein: The monitoring unit is used to monitor the total voltage, total current, contactor status, temperature and safety status information of the entire battery cluster in the industrial and commercial battery storage compartment; The communication unit communicates with the superior BMS via the CAN protocol; The calculation unit is used to calculate the charge and discharge current, chargeable capacity, dischargeable capacity and battery health status, and issue early warnings based on the battery status.

[0014] Furthermore, the BAMS battery management module includes an information collection unit, a calculation and evaluation unit, and a communication unit, wherein: The information collection unit is used to collect lower-level MBMS information; The calculation and evaluation unit is used to calculate and evaluate the remaining capacity, maximum charge and discharge power and health status of multiple parallel battery stacks; The communication unit establishes communication with the energy storage control unit and PCS through RS485, CAN, and Modbus TCP / IP.

[0015] Furthermore, the BMU module includes a data acquisition unit, a calculation and analysis unit, a balance control unit and a communication unit, wherein: The data acquisition unit is used to collect voltage and temperature information of battery cells; The calculation and analysis unit is used to calculate and analyze the SOC and SOH of the battery; The balancing control unit is used to realize active balancing of single cells; The communication unit uses CAN bus communication to communicate with other modules.

[0016] The present invention discloses a highly integrated outdoor industrial and commercial energy storage convergence control cabinet. The highly integrated outdoor industrial and commercial energy storage convergence control cabinet disclosed in the present invention, with its innovative module integration design, optimized space layout and complete battery management system integration, successfully solves the problems existing in the prior art such as low space utilization of prefabricated cabins and being unfavorable for improving energy density. At the same time, on the basis of ensuring safe and stable operation of the equipment, it improves the overall performance and economy of the system, and contributes a technical solution with significant advantages to the development of the industrial and commercial energy storage field. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention after removing the door; Figure 2 It is a rear view of the present invention; Figure 3 This is a three-dimensional diagram of the present invention without the door; Figure 4 A bottom view of the present invention; Figure 5 A perspective view of the present invention; Figure 6 It is the back assembly drawing of the present invention.

[0018] In the figure: 1. Cabinet body; 2. Top lifting ring; 3. Inverter bracket assembly; 4. Terminal front cover; 5. Miniature circuit breaker front cover; 6. Isolation switch front cover; 7. PVC protective plate; 8. Cabinet main grounding; 9. Air conditioning vent; 10. Forklift hole; 11. Wire binding material; 12. Cable hole; 13. Communication line hole; 14. Fire alarm box; 15. Display screen mounting assembly; 16. Inverter module; 17. BMS control module; 18. Terminal block; 19. AC fuse; 20. Intermediate relay; 21. Main incoming line molded case switch; 22. Miniature circuit breaker; 23. Frame isolating switch; 24. Copper busbar assembly; 25. Outgoing cable; 26. Cabinet air conditioner; 27. Small transformer; 28. Outgoing line busbar; 29. ​​Incoming line busbar; 30. Incoming line cable. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1 As shown, the highly integrated outdoor industrial and commercial energy storage convergence control cabinet involved in the present invention has an integrated control cabinet body that extends in the vertical direction, and the cabinet body integrates the converter module, control module and convergence module, and the three are connected by cables.

[0021] like Figure 1 and Figure 5 As shown, the inverter module 16, which serves as the inverter, is securely mounted on the upper portion of the cabinet body 1 via the inverter bracket assembly 3. Specifically, fasteners are used to precisely secure and tighten the inverter module 16 through the pre-set threaded holes on the inverter bracket assembly 3. To ensure the neatness and standardization of the wiring harness, the wiring harness can be effectively tied using the wire binding bridge holes designed on the rear side of the inverter bracket assembly 3, preventing potential malfunctions and safety hazards caused by cable movement during operation.

[0022] like Figure 5As shown, in the center of the convergence control cabinet, key electrical components, including the BMS control module 17, terminal blocks 18, AC fuses 19, intermediate relays 20, main incoming molded case switches 21, and miniature circuit breakers 22, are centrally located. The assembly process for this control module is as follows: First, use screws of appropriate specifications to accurately attach each mounting bracket to the back mounting plate of the convergence control cabinet. Next, use corresponding screws to secure the guide rails to each mounting bracket, and install the corresponding wire ducts on the back mounting plate. Subsequently, install the terminal blocks 18, AC fuses 19, intermediate relays 20, main incoming molded case switches 21, and miniature circuit breakers 22 onto the guide rails in sequence. At the same time, securely attach the BMS control module 17 to the mounting plate using the corresponding screws. After completing the installation of these components, carefully connect the cables according to the pre-designed schematic diagram to ensure that all electrical connections are accurate, reliable, and stable, thereby enabling the control and protection functions of the control module and providing a solid foundation for the stable operation of the energy storage system.

[0023] like Figure 5 As shown, the lower half of the busbar control cabinet, or busbar module, primarily comprises key components such as the frame disconnector 23, copper busbar assembly 24, outgoing cables 25, outgoing busbar 28, incoming busbar 29, and incoming cables 30. The assembly process for the busbar module is as follows: First, accurately install the frame disconnector 23 on the disconnector mounting material. Then, strictly follow the design drawings to complete the assembly of the copper busbar assembly 24, ensuring a tight and reliable connection between the copper busbars to ensure stable transmission of high current. Next, when connecting the cables, securely connect the incoming cable 30 to the incoming busbar 29 and the outgoing cable 25 to the outgoing busbar 28, completing the electrical connection between the copper busbar assembly 24 and the other components. Finally, complete the wiring of the frame disconnector 23 according to the schematic diagram to ensure it can function properly as an on / off control, achieving precise control and protection of the current. It is particularly worth mentioning that in this design, the incoming bus 29 and the outgoing bus 28 are arranged in a staggered manner. This ingenious layout design is not only conducive to the connection operation between the incoming bus 29, the outgoing bus 28 and the cables, but also effectively avoids possible interference problems between the cables and the corresponding busbars, greatly improving the assembly efficiency and the reliability of equipment operation.

[0024] like Figure 1As shown, a top lifting ring 2 is provided on the top of the cabinet body 1 for lifting and carrying the equipment; a cabinet main grounding 8 for grounding protection of the equipment is provided inside the cabinet body 1; a terminal front sealing plate 4, a miniature circuit breaker front sealing plate 5, an isolating switch front sealing plate 6, and a PVC protective plate 7 are installed in sequence from top to bottom in the cabinet body 1, which are respectively used to cover the corresponding terminals, miniature circuit breakers, isolating switches, and other electrical components in the cabinet to prevent accidental touch and dust intrusion.

[0025] like Figure 5 As shown, there is a door on the front of the cabinet body, and a tempered glass window is provided on the inside of the door, so that the staff can observe the operating status of the equipment in the cabinet at any time; the display screen installation component 15 is used to fix and support the display screen so as to clearly present various monitoring data and system information; the emergency stop switch installation component ensures that the power can be quickly cut off in an emergency to ensure the safety of personnel and equipment; the indicator light installation component is used to indicate important information such as the operating status of the equipment and fault alarm; the wiring bracket is used to reasonably organize and fix the cables in the cabinet to ensure that the wiring is neat and standardized, and to avoid faults and safety hazards that may be caused by cluttered cables. At the same time, a fire alarm box 14 for fire alarm is provided.

[0026] like Figure 3 and Figure 4 As shown, at the bottom of the cabinet, there is a forklift hole 10 for forklift handling equipment, and at the same time, there is a communication line hole 13 for communication cables to enter and exit. In particular, there is a cable line hole 12 for convenient entry and exit of cables. The cable line hole 12 is provided with a line binding material 11 for binding and fixing the incoming and outgoing cables to prevent malfunctions and safety hazards that may be caused by shaking of the cables during operation.

[0027] like Figure 2 and Figure 6 As shown, the back door is equipped with an air conditioning bracket and air conditioning vents 9, which provide the necessary conditions for the installation and heat dissipation of the air conditioning equipment, ensuring that the equipment inside the cabinet can operate stably in an appropriate temperature environment, effectively extending the service life of the equipment, and also improving the heat dissipation efficiency and environmental adaptability of the entire control cabinet. A small transformer 27 is used to provide control power, and an in-cabinet air conditioner 26 is used to regulate the temperature inside the cabinet.

[0028] To balance aesthetics and safety requirements against electric shock, the power distribution module and the busbar module are designed with a combination of left and right panel brackets. The front panel is firmly fixed to the cabinet body through the panel brackets on the left and right sides, forming a protective barrier that is both aesthetically pleasing and safe, effectively preventing people from accidentally touching live parts, while also improving the overall appearance quality and protective performance of the control cabinet.

[0029] The convergence control cabinet system innovatively integrates the MBMS and BAMS battery management modules. The BAMS module's terminals are electrically connected to the MBMS module via a linear connection, while the module's other terminals are linearly connected to the BMU module. This completes the battery management system architecture, enabling comprehensive monitoring, management, and protection of the batteries, ensuring safe, stable, and efficient operation under all operating conditions. The MBMS module boasts powerful monitoring capabilities, accurately monitoring key parameters of the entire battery cluster within the industrial and commercial battery storage compartment, including real-time data such as total voltage, total current, contactor status, temperature, and safety status. It efficiently communicates with the upper-level BMS via the CAN protocol, accurately transmitting this data to the upper-level management system in real time. Furthermore, the MBMS module incorporates intelligent computing capabilities, accurately calculating key parameters such as charge and discharge current, available charge capacity, available discharge capacity, and battery health status based on the monitored data. Based on the real-time operating status of the batteries, it issues early warnings, promptly identifying and addressing potential faults, effectively providing comprehensive protection for the battery cluster. The BAMS battery management system module focuses on collecting various information data transmitted by the lower-level MBMS. Based on this rich data, it applies advanced algorithms and computational models to accurately calculate and evaluate key performance indicators (KPIs) such as remaining capacity, maximum charge / discharge power, and health status of multiple parallel battery stacks. The module also features multiple communication interfaces and protocol conversion capabilities, enabling stable and efficient communication links with key equipment such as the energy storage control unit and PCS (power storage converter) via RS485, CAN, and Modbus TCP / IP. It receives unified dispatch and command from the upper-level management system, enabling coordinated operation with the PCS to ensure optimized control and efficient energy management for the entire energy storage system. The BMU module is primarily responsible for collecting detailed information on various battery cells, such as cell voltage and temperature. Through in-depth calculation and analysis of this cell data, the BMU module accurately calculates the battery's SOC (state of charge) and SOH (state of health). Based on this information, it implements active cell balancing control, effectively extending battery life and improving the overall performance and consistency of the battery pack. If a single battery anomaly is detected, the BMU module quickly uploads the relevant abnormality information to the MBMS module, allowing for timely action. Furthermore, the BMU module boasts excellent external communication capabilities, utilizing CAN bus communication for efficient and reliable data exchange with other devices in the system, ensuring collaborative operation and information sharing across the entire battery management system.

[0030] Through the meticulous design and assembly process described above, the highly integrated outdoor industrial and commercial energy storage and convergence control cabinet of the present invention effectively integrates the converter module, control module, and convergence module within a single cabinet. Compared to traditional designs, this highly integrated design significantly reduces the footprint of each module within the prefabricated battery compartment, significantly improving the space utilization within the compartment. This facilitates increasing the number of battery packs and improving the energy density of the entire compartment, thereby achieving higher energy storage and management efficiency within a limited space. This opens up new avenues for the optimized design and widespread application of industrial and commercial energy storage systems.

[0031] The highly integrated outdoor industrial and commercial energy storage convergence control cabinet disclosed in the present invention, with its innovative module integration design, optimized space layout and complete battery management system integration, successfully solves the problems existing in the existing technology such as low space utilization of prefabricated cabins and unfavorable energy density improvement. At the same time, while ensuring the safe and stable operation of the equipment, it improves the overall performance and economy of the system, and contributes a technical solution with significant advantages to the development of the industrial and commercial energy storage field.

[0032] The above embodiments are not limitations of the present invention. Unless otherwise clearly specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. The present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the scope of the technical solution of the present invention also fall within the scope of protection of the present invention. In addition, the technical features involved in the different embodiments of the present application described above can be combined with each other as long as they do not conflict with each other.

Claims

1. A highly integrated outdoor industrial and commercial energy storage and confluence control cabinet, characterized in that: include: The cabinet body (1) extends in height in the vertical direction, and is internally divided into three parts in the vertical direction, namely an upper inverter module area, a middle control module area, and a lower confluence module area; An inverter module (16) is arranged in the upper inverter module area of ​​the cabinet body (1), is fixedly installed through the inverter bracket assembly (3), and is used to convert direct current into alternating current; A control module is arranged in the middle control module area of ​​the cabinet body (1), including a BMS control module (17), a terminal block (18), an AC fuse (19), an intermediate relay (20), a main incoming line molded case switch (21), and a miniature circuit breaker (22). The control module has a reduced shape and is combined with the PCS frame of the inverter module (16); The bus module is arranged in the lower bus module area of ​​the cabinet body (1), and includes a frame isolating switch (23), a copper bus assembly (24), an outgoing cable (25), an outgoing bus (28), an incoming bus (29), and an incoming cable (30), wherein the incoming bus (29) and the outgoing bus (28) are staggered.

2. The highly integrated outdoor industrial and commercial energy storage and confluence control cabinet according to claim 1 is characterized by: The inverter bracket assembly (3) comprises a bracket body connected to the cabinet body (1), and a plurality of fasteners for fixing the inverter module (16); the bracket body is provided with threaded holes, and the inverter module (16) is fixed and locked by the fasteners cooperating with the threaded holes on the bracket body; the rear side of the bracket body is provided with a wire binding bridge-shaped hole for binding the wiring harness of the inverter module (16).

3. A highly integrated outdoor industrial and commercial energy storage and confluence control cabinet according to claim 1, characterized in that: The control module is provided with a miniature circuit breaker bracket for mounting a miniature circuit breaker (22), a switching power supply bracket for mounting a switching power supply, a BMS mounting plate for mounting a BMS control module (17), and a front panel for mounting a display screen mounting assembly (15), an emergency stop switch mounting assembly, and an indicator light mounting assembly.

4. The highly integrated outdoor industrial and commercial energy storage and confluence control cabinet according to claim 1 is characterized in that: The frame disconnector (23) of the bus module is mounted on the disconnector mounting material, the incoming cable (30) is connected to the incoming busbar (29), and the outgoing cable (25) is connected to the outgoing busbar (28).

5. The highly integrated outdoor industrial and commercial energy storage and confluence control cabinet according to claim 1 is characterized in that: An air-conditioning bracket and air-conditioning ventilation holes (9) are provided on the back door of the back of the cabinet body (1), wherein: The air conditioner bracket includes a fixing frame and a plurality of mounting screw holes for mounting the air conditioner; The air conditioning ventilation holes (9) are arranged in a matrix and are used for air conditioning heat dissipation.

6. The highly integrated outdoor industrial and commercial energy storage and confluence control cabinet according to claim 1 is characterized in that: The power distribution module and the confluence module are fixed to the cabinet body (1) via a left panel bracket and a right panel bracket. The left panel bracket and the right panel bracket are respectively arranged on the left and right sides of the front panel and are connected to the cabinet body (1) via bolts to fix the front panel to the cabinet body (1).

7. The highly integrated outdoor industrial and commercial energy storage and confluence control cabinet according to claim 1 is characterized in that: The control module includes the MBMS module, the BAMS battery management module, and the BMU module, among which: The connection terminals of the BAMS battery management module are connected to the MBMS module in a linear connection manner; The other end of the BAMS battery management module is connected to the BMU module through a linear connection.

8. The highly integrated outdoor industrial and commercial energy storage and confluence control cabinet according to claim 7 is characterized in that: The MBMS module includes a monitoring unit, a communication unit and a calculation unit, wherein: The monitoring unit is used to monitor the total voltage, total current, contactor status, temperature and safety status information of the entire battery cluster in the industrial and commercial battery storage compartment; The communication unit communicates with the superior BMS via the CAN protocol; The calculation unit is used to calculate the charge and discharge current, chargeable capacity, dischargeable capacity and battery health status, and issue an early warning based on the battery status.

9. The highly integrated outdoor industrial and commercial energy storage and confluence control cabinet according to claim 7 is characterized in that: The BAMS battery management module includes an information collection unit, a calculation and evaluation unit, and a communication unit, wherein: The information collection unit is used to collect lower-level MBMS information; The calculation and evaluation unit is used to calculate and evaluate the remaining capacity, maximum charge and discharge power and health status of the multi-cluster parallel battery stack; The communication unit establishes communication with the energy storage control unit and PCS via RS485, CAN, and Modbus TCP / IP.

10. The highly integrated outdoor industrial and commercial energy storage and confluence control cabinet according to claim 7 is characterized in that: The BMU module includes a data acquisition unit, a calculation and analysis unit, a balance control unit and a communication unit, wherein: The data acquisition unit is used to collect voltage and temperature information of the battery cells; The calculation and analysis unit is used to calculate and analyze the SOC and SOH of the battery; The balancing control unit is used to achieve active balancing of the single cells; The communication unit communicates with other modules using a CAN bus communication method.

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