UPS (Uninterrupted Power Supply) cabinet

Abstract

The utility model relates to a UPS (Uninterrupted Power Supply) cabinet, which comprises a cabinet, a first placing cavity, a second placing cavity and a third placing cavity are arranged in the cabinet, a transformer module is placed in the first placing cavity, and a plurality of groups of rectifier modules, inverter modules and first battery assemblies are placed in the second placing cavity. The inverter module is electrically connected with the rectifier module, and a second battery assembly is placed in the third placing cavity; the inverter module comprises a plurality of first IGBTs, a plurality of second IGBTs and a plurality of inverters, the first IGBTs are electrically connected with the first battery assembly, the first IGBTs are electrically connected with the second IGBTs, and the second IGBTs are connected with the inverters. The beneficial effects of the utility model lie in that the efficiency, reliability and safety of the system can be improved, and better maintenance and upgrade capability can be provided.

Description

Technical Field

[0001] The utility model relates to the technical field of UPS power supply, in particular to a UPS power supply cabinet. Background Art

[0002] As modern power systems have higher requirements for stability and reliability, especially in critical infrastructure such as data centers, medical facilities, industrial control systems, etc., uninterruptible power systems are needed to ensure the continuous operation of critical equipment. UPS power cabinets are designed to meet these high-demand power security needs. Traditional UPS power cabinets often integrate multiple components in a closed space, which requires a lot of time and labor when performing maintenance or upgrades. In some UPS power cabinets, the power conversion efficiency is not high, resulting in energy waste and increased operating costs. In some cases, traditional UPS power cabinets may not be able to cut off the power supply in time when a failure occurs, posing a safety hazard. Utility Model Content

[0003] The utility model aims to provide a UPS power cabinet which can improve the efficiency, reliability and safety of the system and can also provide better maintenance and upgrade capabilities.

[0004] A UPS power cabinet comprises a cabinet, wherein a first placement cavity, a second placement cavity and a third placement cavity are arranged in the cabinet, a transformer module is placed in the first placement cavity, a plurality of groups of rectifier modules, an inverter module and a first battery assembly are placed in the second placement cavity, the inverter module and the rectifier module are electrically connected, and a second battery assembly is placed in the third placement cavity;

[0005] The inverter module includes a plurality of first IGBTs, a plurality of second IGBTs and a plurality of inverters. The first IGBTs are electrically connected to the first battery assembly, the first IGBTs are electrically connected to the second IGBTs, and the second IGBTs are connected to the inverters.

[0006] In the above scheme, by placing the transformer module in the first placement cavity, several groups of rectifier modules, the inverter module and the first battery assembly in the second placement cavity, and the third battery assembly in the third placement cavity, a modular layout inside the cabinet is achieved. This design improves the maintainability and scalability of the system, makes the replacement and upgrading of each component more convenient and quick, and also helps to reduce mutual interference and improve the overall performance of the system. The electrical connection design between the inverter module and the rectifier module ensures high efficiency of power conversion; in the inverter module, the first IGBT and the second IGBT can ensure that the user can obtain high-quality voltage output and the highest economic benefit under various workload conditions. Since the inverter module and the rectifier module are electrically connected, the first IGBT and the second IGBT can make the rectifier module appear as an approximately pure resistive load to the power grid, so that the purpose of two-way protection can be achieved, that is, protecting the load and the power grid.

[0007] Furthermore, the rectifier module includes multiple first fuses, multiple rectifiers, multiple first PCBs and multiple first static conversion switches, the multiple first static conversion switches are respectively arranged on the multiple first PCBs, the multiple first PCBs are respectively electrically connected to the multiple rectifiers, and the multiple first fuses are respectively electrically connected to the multiple first PCBs.

[0008] In the above scheme, the setting of the first fuse provides overcurrent protection for the rectifier module. When the current exceeds the preset safety threshold, the first fuse can automatically disconnect the circuit to prevent damage caused by overload or short circuit, thereby protecting the safety of the rectifier and subsequent circuits. The first static transfer switch is set on the first PCB, so that the power switching function is integrated on the circuit board. Such a design simplifies the circuit layout and improves the integration of the module. The first static transfer switch allows fast switching between different power inputs, ensuring the continuity and stability of the power supply.

[0009] Furthermore, the inverter module also includes a plurality of second fuses and a plurality of second PCBs. A single second PCB is arranged between the two inverters and electrically connected to the two inverters. A second static switching switch is provided on the second PCB.

[0010] In the above scheme, the addition of the second fuse provides additional overcurrent protection for the inverter module. In the case of abnormally high current, the fuse can disconnect the circuit in time to prevent the inverter from being damaged due to overload, thereby ensuring the safe operation of the entire system. The setting of the second static transfer switch allows the system to quickly switch between different inverters or power inputs, ensuring the continuity and flexibility of the power supply. By integrating the second static transfer switch on the second PCB, external wiring can be reduced, thereby reducing the generation of electromagnetic interference.

[0011] Furthermore, the rectifier module is connected to a first heat sink, and the inverter module is connected to a second heat sink.

[0012] In the above scheme, the rectifier and inverter modules will generate heat during operation. By connecting the dedicated first heat sink and the second heat sink, the heat can be effectively conducted away to keep the components working within a suitable temperature range, thereby improving the stability and reliability of the system. The suitable operating temperature can ensure the power conversion efficiency and the stability of the output voltage, thereby providing a higher quality power supply. The heat sink can not only help the components dissipate heat, but also reduce the need for fan operation, thereby reducing the noise level of the system, especially in applications that require a quiet environment.

[0013] Furthermore, the first battery assembly includes a plurality of cylindrical batteries and a plurality of parallel copper bars, and the plurality of cylindrical batteries are connected in parallel via the plurality of parallel copper bars.

[0014] In the above scheme, by connecting multiple cylindrical batteries in parallel, the total capacity of the battery pack can be increased, thereby providing a longer backup power time and meeting longer power needs. The parallel connection can reduce the impact of a single battery failure on the performance of the entire battery pack. Even if a battery has a problem, other batteries can still continue to supply power, improving the reliability of the system. The design of cylindrical batteries and parallel copper busbars makes the maintenance and replacement of the battery pack easier.

[0015] Furthermore, the cabinet includes a cabinet body and two cabinet doors, the two cabinet doors are movably connected to the cabinet body, and a touch display screen device is installed on the cabinet doors.

[0016] In the above scheme, the touch screen device can provide graphic display and digital display at the same time, which is suitable for users to view status, data and perform operation control. The display content includes: input voltage, input frequency, output voltage, output current, output frequency, active power, apparent power, load rate, floating charge voltage, equalization charge voltage, charging current, charger temperature, battery voltage, battery pack temperature, battery remaining discharge time, battery remaining capacity percentage, battery status, historical records, etc. The touch screen device installed on the cabinet provides an efficient and intuitive user interface for the UPS power cabinet, which significantly improves real-time monitoring, fault diagnosis, battery management, maintenance efficiency and system safety, and provides users with a more convenient and reliable power management solution.

[0017] Furthermore, the cabinet includes a front baffle assembly, two side panels and a back panel assembly, two sides of the back panel assembly are respectively vertically connected to the two side panels, and the other side of the two side panels is connected to the front baffle assembly.

[0018] In the above scheme, this design allows the components to be manufactured and pre-assembled separately and then assembled in the final location, simplifying the production and installation process while also facilitating future maintenance and upgrades.

[0019] Furthermore, the cabinet body also includes a top plate assembly and a bottom plate, the top plate assembly is installed with a plurality of cooling fans, and the bottom plate is provided with a cooling grid.

[0020] In the above scheme, the multiple cooling fans on the top plate assembly can effectively discharge the hot air in the cabinet and at the same time inhale fresh cold air, thereby enhancing air circulation and improving the overall heat dissipation efficiency. By installing cooling fans on the top plate assembly and designing a heat dissipation grid on the bottom plate, not only the heat dissipation efficiency and system stability are improved, but also the failure rate and noise are reduced, thereby improving the convenience of maintenance and the safety of the system.

[0021] The utility model provides a UPS power cabinet that can improve the efficiency, reliability and safety of the system, and can also provide the beneficial effect of better maintenance and upgrade capabilities. By placing the transformer module in the first placement cavity, placing several groups of rectifier modules, the inverter module and the first battery assembly in the second placement cavity, and placing the third battery assembly in the third placement cavity, a modular layout inside the cabinet is achieved. This design improves the maintainability and scalability of the system, making the replacement and upgrade of each component more convenient and quick, and also helps to reduce mutual interference and improve the overall performance of the system. The electrical connection design between the inverter module and the rectifier module ensures high efficiency of power conversion; in the inverter module, the first IGBT and the second IGBT can ensure that users can obtain high-quality voltage output and the highest economic benefits under various working load conditions. Since the inverter module and the rectifier module are electrically connected, the first IGBT and the second IGBT can make the rectifier module appear as an approximately pure resistive load to the power grid, so that the purpose of two-way protection can be achieved, that is, protecting the load and the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a schematic diagram of the internal structure of a cabinet according to an embodiment.

[0023] Figure 2 The figure is a side view of the internal structure of a cabinet according to an embodiment.

[0024] Figure 3 The figure is a schematic diagram of the structure of an inverter module according to an embodiment.

[0025] Figure 4 The figure is a schematic diagram of the structure of a rectifier module according to an embodiment.

[0026] Figure 5 The figure is a schematic diagram of the overall structure of a cabinet according to an embodiment.

[0027] Figure 6 The figure is a schematic diagram of the cabinet bottom plate structure according to an embodiment.

[0028] Figure 7 The figure is a schematic diagram of the structure of a front baffle assembly according to an embodiment.

[0029] Explanation of the accompanying drawings: 1. first placement cavity; 2. second placement cavity; 3. third placement cavity; 4. cooling fan; 5. transformer module; 6. inverter module; 61. first IGBT; 62. second IGBT; 63. inverter; 64. second fuse; 65. second PCB; 66. second static transfer switch; 7. rectifier module; 71. first fuse; 72. rectifier; 73. second PCB; 74. second static transfer switch; 8. first battery assembly; 81. parallel copper bus; 82. cylindrical battery; 9. second battery assembly; 10. first radiator; 11. second radiator; 111. front baffle assembly; 112. side panel; 113. back panel; 12. cabinet door; 13. touch display device; 14. top panel assembly; 15. bottom panel; 151. heat dissipation grid. DETAILED DESCRIPTION

[0030] The flywheel energy storage UPS power supply system of the utility model will be further described in detail below in conjunction with specific embodiments and drawings.

[0031] like Figures 1 to 4 As shown, in a preferred embodiment, a UPS power cabinet of the utility model includes a cabinet, and a first placement cavity 1, a second placement cavity 2 and a third placement cavity 3 are provided in the cabinet. The first placement cavity 1 is provided with a transformer module 5, and the second placement cavity 2 is provided with a plurality of groups of rectifier modules 7, an inverter module 6 and a first battery assembly 8, the inverter module 6 and the rectifier module 7 are electrically connected, and the third placement cavity 3 is provided with a second battery assembly 9; the inverter module 6 includes a plurality of first IGBTs 61, a plurality of second IGBTs 62 and a plurality of inverters 63, the first IGBT 61 is electrically connected to the first battery assembly 8, the first IGBT 61 and the second IGBT 62 are electrically connected, and the second IGBT 62 and the inverter 63 are connected.

[0032] In the above embodiment, by placing the transformer module 5 in the first placement cavity 1, placing several groups of rectifier modules 7, the inverter module 6 and the first battery assembly 8 in the second placement cavity 2, and placing the third battery assembly in the third placement cavity 3, a modular layout inside the cabinet is achieved. This design improves the maintainability and scalability of the system, making the replacement and upgrading of each component more convenient and quick, and also helps to reduce mutual interference and improve the overall performance of the system. The electrical connection design between the inverter module 6 and the rectifier module 7 ensures high efficiency of power conversion; in the inverter module 6, the first IGBT61 and the second IGBT62 can ensure that the user can obtain high-quality voltage output and the highest economic benefit under various workload conditions. Since the inverter module and the rectifier module 7 are electrically connected, the first IGBT61 and the second IGBT62 can make the rectifier module 7 appear as an approximately pure resistive load to the power grid, so that the purpose of two-way protection can be achieved, that is, protecting the load and the power grid.

[0033] As shown in the figure, in some embodiments, the rectifier module 7 includes a plurality of first fuses 71, a plurality of rectifiers 72, a plurality of first PCBs and a plurality of first static transfer switches 74. The plurality of first static transfer switches 74 are respectively arranged on the plurality of first PCBs. The plurality of first PCBs are respectively electrically connected to the plurality of rectifiers 72. The plurality of first fuses 71 are respectively electrically connected to the plurality of first PCBs. The arrangement of the first fuse 71 provides overcurrent protection for the rectifier module 7. When the current exceeds a preset safety threshold, the first fuse 71 can automatically disconnect the circuit to prevent damage caused by overload or short circuit, thereby protecting the safety of the rectifier 72 and subsequent circuits. The first static transfer switch 74 is arranged on the first PCB, so that the power switching function is integrated on the circuit board. Such a design simplifies the circuit layout and improves the integration of the module. The first static transfer switch 74 allows fast switching between different power inputs, ensuring the continuity and stability of the power supply.

[0034] like Figures 1 to 4As shown, in some embodiments, the inverter module 6 further includes a plurality of second fuses 64 and a plurality of second PCBs 7365, a single second PCB 7365 is disposed between the two inverters 63 and electrically connected to the two inverters 63, and a second static transfer switch 66 is disposed on the second PCB 7365. The addition of the second fuse 64 provides additional overcurrent protection for the inverter module 6. In the case of abnormally high current, the fuse can disconnect the circuit in time to prevent the inverter 63 from being damaged due to overload, thereby ensuring the safe operation of the entire system. The provision of the second static transfer switch 66 allows the system to quickly switch between different inverters 63 or power inputs, thereby ensuring the continuity and flexibility of the power supply. By integrating the second static transfer switch 66 on the second PCB 7365, external wiring can be reduced, thereby reducing the generation of electromagnetic interference.

[0035] like Figures 1 to 4 As shown, in some embodiments, the rectifier module 7 is connected to a first heat sink 10, and the inverter module 6 is connected to a second heat sink 11. The rectifier 72 and the inverter module 6 will generate heat during operation. By connecting the dedicated first heat sink 10 and the second heat sink 11, the heat can be effectively conducted away, and the components can be kept working within a suitable temperature range, thereby improving the stability and reliability of the system. The suitable operating temperature can ensure the power conversion efficiency and the stability of the output voltage, thereby providing a higher quality power supply. The heat sink can not only help the components dissipate heat, but also reduce the need for fan operation, thereby reducing the noise level of the system, especially in applications that require a quiet environment.

[0036] like Figures 1 to 4 As shown, in some embodiments, the first battery assembly 8 includes a plurality of cylindrical batteries 82 and a plurality of parallel copper bars 81, and the plurality of cylindrical batteries 82 are connected in parallel through the plurality of parallel copper bars 81. By connecting a plurality of cylindrical batteries 82 in parallel, the total capacity of the battery pack can be increased, thereby providing a longer backup power time and meeting a longer power demand. The parallel connection can reduce the impact of a single battery failure on the performance of the entire battery pack. Even if a battery has a problem, other batteries can still continue to supply power, thereby improving the reliability of the system. The design of the cylindrical battery 82 and the parallel copper bar 81 makes the maintenance and replacement of the battery pack easier.

[0037] like Figures 5 to 7As shown, in some embodiments, the cabinet includes a cabinet body and two cabinet doors 12, the two cabinet doors 12 are movably connected to the cabinet body, and a touch screen device 13 is installed on the cabinet door 12. The touch screen device 13 can provide graphic display and digital display at the same time, which is suitable for users to view status, data and perform operation control. The display content includes: input voltage, input frequency, output voltage, output current, output frequency, active power, apparent power, load rate, floating charge voltage, equalization charge voltage, charging current, charger temperature, battery voltage, battery pack temperature, battery remaining discharge time, battery remaining capacity percentage, battery status, historical records, etc. The touch screen device 13 installed on the cabinet provides an efficient and intuitive user interface for the UPS power cabinet, which significantly improves real-time monitoring, fault diagnosis, battery management, maintenance efficiency and system safety, and provides users with a more convenient and reliable power management solution.

[0038] like Figures 5 to 7 As shown, in some embodiments, the cabinet includes a front baffle assembly 111, two side panels 112 and a back panel 113 assembly, the two sides of the back panel 113 assembly are respectively vertically connected to the two side panels 112, and the other side of the two side panels 112 is connected to the front baffle assembly 111. This design allows each component to be manufactured and pre-assembled separately, and then assembled in the final position, which simplifies the production and installation process, and also facilitates future maintenance and upgrades.

[0039] like Figures 5 to 7 As shown, in some embodiments, the cabinet further includes a top plate assembly 14 and a bottom plate 15, the top plate assembly 14 is equipped with a plurality of cooling fans 4, and the bottom plate 15 is provided with a cooling grid 151. The plurality of cooling fans 4 on the top plate assembly 14 can effectively discharge the hot air in the cabinet, while inhaling fresh cold air, thereby enhancing air circulation and improving the overall cooling efficiency. By installing the cooling fans 4 on the top plate assembly 14 and designing the cooling grid 151 on the bottom plate 15, not only the cooling efficiency and system stability are improved, but also the failure rate and noise are reduced, thereby improving the convenience of maintenance and the safety of the system.

[0040] The utility model discloses a working principle and process of a UPS power cabinet. The AC power of the mains enters the UPS power cabinet through the input end and first reaches the rectifier module 7. The function of the rectifier module 7 is to convert AC into DC so as to provide power for battery charging and the inverter module 6. The rectified DC is stored in the first battery assembly 8 and the second battery assembly 9. At the same time, thermal management is performed through the first radiator 10 to ensure that the battery pack works at a suitable temperature to improve efficiency and life. When the mains power is interrupted or unstable, the inverter module 6 converts the DC stored in the first battery assembly 8 and the second battery assembly 9 back to AC for use by the load. The inverter module 6 performs thermal management through the second radiator 11 to maintain the stable operation of the inverter 63. The first static transfer switch 74 and the second static transfer switch 66 ensure seamless switching between the main power supply and the backup power supply to provide a continuous and stable power supply.

[0041] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A UPS power cabinet, characterized in that: A cabinet is provided with a first placement cavity, a second placement cavity and a third placement cavity, the first placement cavity is provided with a transformer module, the second placement cavity is provided with a plurality of groups of rectifier modules, an inverter module and a first battery assembly, the inverter module is electrically connected to the rectifier module, and the third placement cavity is provided with a second battery assembly; The inverter module includes a plurality of first IGBTs, a plurality of second IGBTs and a plurality of inverters. The first IGBTs are electrically connected to the first battery assembly, the first IGBTs are electrically connected to the second IGBTs, and the second IGBTs are connected to the inverters.

2. The UPS power cabinet according to claim 1, characterized in that: The rectifier module includes multiple first fuses, multiple rectifiers, multiple first PCBs and multiple first static transfer switches, the multiple first static transfer switches are respectively arranged on the multiple first PCBs, the multiple first PCBs are respectively electrically connected to the multiple rectifiers, and the multiple first fuses are respectively electrically connected to the multiple first PCBs.

3. The UPS power cabinet according to claim 1, characterized in that: The inverter module further includes a plurality of second fuses and a plurality of second PCBs. A single second PCB is disposed between the two inverters and electrically connected to the two inverters. A second static transfer switch is disposed on the second PCB.

4. The UPS power cabinet according to claim 1, characterized in that: The rectifier module is connected to a first heat sink, and the inverter module is connected to a second heat sink.

5. The UPS power cabinet according to claim 1, characterized in that: The first battery assembly includes a plurality of cylindrical batteries and a plurality of parallel copper bars, and the plurality of cylindrical batteries are connected in parallel via the plurality of parallel copper bars.

6. The UPS power cabinet according to claim 1, characterized in that: The cabinet comprises a cabinet body and two cabinet doors, the two cabinet doors are movably connected to the cabinet body, and a touch display screen device is installed on the cabinet doors.

7. The UPS power cabinet according to claim 6, characterized in that: The cabinet comprises a front baffle assembly, two side panels and a back panel assembly. Two sides of the back panel assembly are respectively vertically connected to the two side panels, and the other side of the two side panels is connected to the front baffle assembly.

8. The UPS power cabinet according to claim 7, characterized in that: The cabinet also includes a top plate assembly and a bottom plate. The top plate assembly is provided with a plurality of cooling fans, and the bottom plate is provided with a cooling grid.

Images