Uninterruptible power supply system and uninterruptible power supply

Abstract

The utility model discloses an uninterruptible power supply system and an uninterruptible power supply, and relates to the field of power supplies. The uninterruptible power supply system comprises a power supply input end, a power supply output end, an uninterruptible power supply and a maintenance bypass. The uninterruptible power supply comprises a main power supply circuit, a battery device and an operation bypass, the main power supply circuit is connected with the power input end and the power output end, the operation bypass is connected with the main power supply circuit in parallel, and the battery device is connected with the main power supply circuit; the maintenance bypass is connected with the power supply input end and the power supply output end; and when the trigger signal is received and the operation bypass is detected to be in a conducting state, the power supply signal input by the power supply input end is output to the power supply output end. Therefore, the uninterruptible power supply can be removed for maintenance and overhaul under the condition of ensuring that the load is uninterruptible, and the safety and reliability of the power supply work of the uninterruptible power supply system are improved.

Description

Technical Field

[0001] The present application relates to the technical field of power supply, and in particular to an uninterruptible power supply system and an uninterruptible power supply. Background Art

[0002] In industrial and commercial environments, in order to prevent grid voltage fluctuations (i.e. power swings) from causing abnormal shutdowns of key equipment such as dehumidifiers, chillers, and air compressors, uninterruptible power supplies, also known as UPS devices, are usually connected in series in the control circuits of these main energy supply equipment. This type of uninterruptible power supply can provide stable power output when the power supply is unstable, ensuring continuous operation of the equipment.

[0003] However, when the uninterruptible power supply needs to be periodically shut down for maintenance or automatically switches from online mode to bypass operation mode due to internal hardware failure, it can no longer provide anti-power swing protection for the connected equipment, which may cause the protected equipment to lose the ability to shut down due to power swings. Utility Model Content

[0004] In view of the above problems, the present application provides an uninterruptible power supply system and an uninterruptible power supply, which can improve the problem that the uninterruptible power supply cannot continue to provide anti-power swing protection function when it automatically switches from online mode to bypass operation mode. The uninterruptible power supply can be removed for maintenance and repair while ensuring that the load is not disconnected, thereby improving the safety and reliability of the power supply work of the uninterruptible power supply system.

[0005] In a first aspect, the present application provides an uninterruptible power supply system, comprising a power input terminal, a power output terminal, an uninterruptible power supply and a maintenance bypass, wherein the uninterruptible power supply comprises a main power supply circuit, a battery device and an operation bypass, wherein the main power supply circuit is connected to the power input terminal and the power output terminal, and the operation bypass is connected in parallel with the main power supply circuit;

[0006] The operation bypass is used to output the power signal input from the power input end to the power output end when the voltage output from the main power supply circuit is lower than a preset voltage or when the operation bypass is triggered to enter a conducting state;

[0007] The maintenance bypass is connected to the power input end and the power output end; the maintenance bypass is used to output the power signal input from the power input end to the power output end when it is triggered and detects that the operation bypass is in an on state.

[0008] In the technical solution of the embodiment of the present application, when the maintenance bypass is triggered and detects that the bypass is working, for example, when the maintenance bypass receives a trigger signal triggered by the user and detects that the uninterruptible power supply automatically switches to the bypass operation mode due to a fault or is manually controlled to switch to the bypass operation mode, the power input end can be safely connected directly to the power output end, so that when the uninterruptible power supply is removed or repaired with power, the normal operation of the load is not affected. In this way, the uninterruptible power supply system of the present application improves the problem that traditional UPS equipment must be shut down during maintenance, and improves the safety and reliability of the power supply work of the uninterruptible power supply system.

[0009] In some embodiments, the maintenance bypass includes:

[0010] A trigger switch, the trigger switch is arranged in series between the power input terminal and the power output terminal, and the trigger switch is used to connect the power input terminal and the power output terminal when being triggered to conduct;

[0011] a detection device, the detection device being connected to the power input terminal and the power output terminal respectively, and the detection device being configured to output a control signal when triggered by a preset voltage difference between the power input terminal and the power output terminal;

[0012] A maintenance bypass switch is arranged in series between the trigger switch and the power output end; the maintenance bypass switch is used to be turned on when receiving the control signal to output the power signal input from the power input end to the power output end.

[0013] In the technical solution of the embodiment of the present application, when the uninterruptible power supply needs to be repaired, the user can press the trigger key / button corresponding to the trigger switch to close the trigger switch. After the trigger switch is closed, the detection device will be triggered by the voltage difference between the power input terminal and the power output terminal and output a control signal. For example, once the voltage difference between the power input terminal and the power output terminal reaches a preset voltage difference, the detection device will output a control signal to the maintenance bypass switch, so that the maintenance bypass switch is closed after receiving the control signal, so that the power input terminal is directly connected to the power output terminal through the line corresponding to the maintenance bypass, so as to output the power signal input from the power input terminal to the power output terminal, and complete the non-stop switching operation from the uninterruptible power supply to the mains direct supply. When the maintenance bypass is working, the uninterruptible power supply can be safely removed from the uninterruptible power supply system for maintenance or repair work. In this way, the uninterruptible power supply system not only realizes the live removal and maintenance operations of the uninterruptible power supply without power outages, but also introduces a voltage difference detection mechanism through the detection device, ensuring electrical safety and reliability during the switching process, and improving the stability and maintenance convenience of the uninterruptible power supply system.

[0014] In some embodiments, the detection device includes a pressure differential relay, the pressure differential relay has a pressure differential relay coil and a pressure differential relay switch, the pressure differential relay coil is arranged between the power input end and the power output end; the first end of the pressure differential relay switch is electrically connected to the power input end, and the controlled end of the pressure differential relay switch is connected to the pressure differential relay coil;

[0015] The maintenance bypass switch includes an intermediate relay, which has an intermediate relay coil and an intermediate relay switch. The intermediate relay coil is connected to the second end of the pressure difference relay switch. The intermediate relay switch is arranged between the trigger switch and the power supply output end, and the controlled end of the intermediate relay switch is connected to the intermediate relay coil.

[0016] In the technical solution of the embodiment of the present application, when the voltage difference between the power input terminal and the power output terminal of the pressure differential relay coil reaches a preset voltage difference value (that is, the voltages of the power input terminal and the power output terminal are almost synchronized), the pressure differential relay switch is controlled to close, so that the intermediate relay coil connected in series with the pressure differential relay switch is energized, and then the intermediate relay switch is controlled to close, so that the city power connected to the power input terminal is directly output to the terminal equipment such as the maintenance bypass and the power output terminal through the maintenance bypass. In this way, the uninterruptible power supply can be removed for maintenance or overhaul without power outage. At the same time, only when the pressure differential relay detects that the voltages of the power input terminal and the power output terminal are synchronized, the intermediate relay can be closed, and the operation bypass is switched to the maintenance bypass, preventing incorrect switching due to misoperation or other abnormal conditions, and further enhancing the safety and reliability of the uninterruptible power supply system.

[0017] In some embodiments, the main power supply circuit includes an input filter circuit, a rectifier circuit, an inverter circuit, an output filter circuit and a boost circuit;

[0018] The power input terminal, the input filter circuit, the rectifier circuit, the inverter circuit, and the power output terminal are electrically connected in sequence, the input terminal of the battery device is connected to the output terminal of the input filter circuit, the output terminal of the battery device is connected to the boost circuit, and the common connection terminal of the rectifier circuit and the inverter circuit is connected to the boost circuit.

[0019] In this embodiment, the input filter circuit can effectively remove harmonics and interference signals in the mains power, ensuring that the AC power entering the subsequent circuit is pure and stable. The rectifier circuit converts the AC mains power after filtering by the input filter circuit into DC power for charging the battery device or directly supplying the inverter circuit; the inverter circuit then converts the DC power back into high-quality AC power to power the load. This bidirectional energy conversion mechanism improves the efficiency of the entire uninterruptible power supply system and reduces energy loss. The output filter circuit smoothes the AC power generated by the inverter circuit, further purifies the output voltage, and provides a more stable power supply to the load device. In addition, when the mains voltage is lower than the normal operating range of the uninterruptible power supply, the boost circuit can increase the input voltage to a preset voltage level to ensure that the rectifier circuit can work normally, while avoiding the need for an external boost device, simplifying the uninterruptible power supply system architecture and reducing costs.

[0020] In some embodiments, the first end of the maintenance bypass is connected to the common connection end of the input filter circuit and the rectifier circuit, and the second end of the maintenance bypass is connected to the common connection end of the inverter circuit and the output filter circuit. With this design, when the uninterruptible power supply device is in maintenance mode (maintenance bypass operation), sensitive electronic components such as battery devices and inverters inside the uninterruptible power supply no longer participate in the power supply process, reducing the risk of them being damaged by accidental operation or external factors. The energy conversion links inside the uninterruptible power supply are reduced, thereby improving the overall energy efficiency and reducing energy consumption.

[0021] In some embodiments, the uninterruptible power supply system further comprises:

[0022] A leakage protection device is electrically connected to the power output end; the leakage protection device is used to perform a leakage protection action in response to a leakage signal generated at the power output end to cut off the power output of the power output end.

[0023] In this embodiment, the leakage protection device can detect the output current flowing through the power output terminal. When the output current exceeds the first preset current threshold, the electrical connection path between the power output terminal of the uninterruptible power supply system and the rear-end load is disconnected, the leakage path is cut off, and the risk of safety accidents caused by leakage is reduced. In this way, the problem of output side leakage caused by hardware failure, hardware performance degradation and other problems of the uninterruptible power supply is improved.

[0024] In some embodiments, the leakage protection device is disposed on a side wall of the uninterruptible power supply, and the uninterruptible power supply system further comprises:

[0025] A protective cover is provided for the leakage protection device. The protective cover can effectively isolate the leakage protection device, provide a physical barrier for the leakage protection device, prevent operators or other objects from accidentally contacting live parts or sensitive components, and reduce the risk of electric shock and the possibility of mechanical damage. In this way, the safety of the uninterruptible power supply system is further improved.

[0026] In some embodiments, the uninterruptible power supply further comprises:

[0027] a housing, wherein the battery device is disposed in the housing;

[0028] A main board, the main board is arranged in the housing, and the main power supply circuit and the operation bypass are respectively arranged on the main board;

[0029] A connector is electrically connected to the battery device and is disposed on one side of the housing for connecting to an external battery detection device.

[0030] When it is necessary to detect the battery device in the housing of the uninterruptible power supply, it is only necessary to connect the external battery detection device to the connector, without the need for additional tools or removal of the uninterruptible power supply, thus realizing the function of charging and discharging detection of the battery device when the uninterruptible power supply is in normal online mode. In this way, the efficiency and convenience of charging and discharging detection of the battery device are improved.

[0031] In some embodiments, the uninterruptible power supply system further comprises:

[0032] A battery protection device is arranged in series between the battery device and the connector, and is used to disconnect the electrical connection between the battery device and the connector in the event of a current fault in the battery device. For example, when the battery protection device detects that the current in the circuit where the battery device is located reaches a second preset current threshold, the circuit is cut off, that is, the battery protection device works when a short circuit, overload or other fault occurs, resulting in abnormal current, thereby reducing the risk of overheating of the battery device due to overcurrent, or even causing a safety accident. In this way, not only reliable overcurrent protection is provided for the battery device and the connector, but also the safety and reliability of the uninterruptible power supply system are significantly improved.

[0033] In a second aspect, the present application further provides an uninterruptible power supply, the uninterruptible power supply comprising:

[0034] case;

[0035] A mainboard, the mainboard is arranged in the shell, and a main power supply circuit and an operation bypass are arranged on the mainboard; the main power supply circuit has an input end and an output end, the input end of the operation bypass is connected to the input end of the main power supply circuit, and the output end of the operation bypass is connected to the output end of the main power supply circuit; the operation bypass is used to output the input power signal when the voltage output by the main power supply circuit is lower than a preset voltage or when the operation bypass is triggered to enter a conducting state;

[0036] A battery device, the battery device is arranged in the housing, the battery device is electrically connected to the main power supply circuit; the battery device is used to output power to the main power supply circuit when the input voltage of the main power supply circuit is lower than a preset voltage;

[0037] A connector is electrically connected to the battery device and is disposed on one side of the housing for connecting to an external battery detection device.

[0038] In the technical solution of the embodiment of the present application, when it is necessary to detect the battery device in the housing of the uninterruptible power supply, it is only necessary to connect the external battery detection device to the connector, without the need for additional tools or removal of the uninterruptible power supply, thereby realizing the function of performing charge and discharge detection on the battery device when the uninterruptible power supply is in the normal online mode. In this way, the efficiency and convenience of charge and discharge detection of the battery device are improved.

[0039] In some embodiments, the connector includes a positive detection terminal and a negative detection terminal, the battery device includes a positive terminal and a negative terminal, the positive detection terminal is electrically connected to the positive terminal, and the negative detection terminal is connected to the negative terminal.

[0040] The connector is set on one side of the housing of the UPS device, and is electrically connected to the positive and negative electrodes of the battery device through the positive and negative detection terminals. In practical applications, when it is necessary to perform charging and discharging tests on the battery device, it can be directly connected to the external battery detection device through the connector. This enables online monitoring and diagnosis of the status of the internal battery device. This design not only improves the maintenance efficiency of the uninterruptible power supply system, but also enhances the safety and reliability of its operation.

[0041] In some embodiments, the connector further comprises:

[0042] A female jack socket, wherein the female jack socket is provided with at least two jacks;

[0043] The positive pole detection terminal and the negative pole detection terminal are respectively arranged in the two sockets of the female socket seat.

[0044] The connector adopts a female jack structure, allowing the probe or connecting wire of the external battery detection device to be quickly inserted or removed without complicated tools and operating steps. This simplifies the detection process and improves maintenance efficiency and convenience. This shortens the preparation time and actual detection time, and improves work efficiency.

[0045] In some embodiments, the UPS device comprises:

[0046] A protective cover is provided on the housing, and the protective cover covers the connector. The protective cover can effectively isolate the connector, prevent operators or other objects from accidentally contacting live parts or sensitive components, and reduce the risk of electric shock and the possibility of mechanical damage. At the same time, the protective cover helps maintain the working environment of the connector, avoids malfunction or failure caused by changes in external conditions, ensures that it is in a reliable operating state, and thus improves the reliability of charge and discharge detection of the battery device.

[0047] In some embodiments, a sealing gasket is provided between the protective cover and the shell, and / or a threaded hole is provided on the protective cover, and the protective cover is fixedly connected to the shell by screws.

[0048] The sealing gasket can effectively prevent moisture, dust and other tiny particles from entering the UPS device, reducing the risk of corrosion, oxidation and other damage to the internal electronic components, thereby extending the overall service life of the uninterruptible power supply system. At the same time, for the connector, the buffering effect provided by the sealing gasket can reduce the stress generated during the plugging and unplugging operation and extend the service life of the connector. The threaded hole is used in conjunction with the screw to fix the protective cover to the shell to prevent it from loosening or falling off due to vibration, collision or other external forces. When the connector needs to be used to connect an external battery detection device to perform charge and discharge detection on the battery device, the protective cover can be removed from the shell, and vice versa, the protective cover can be fixed to the shell to reduce the risk of electric shock and mechanical damage. The setting of the threaded hole and the screw achieves reliable fixation and maintains the overall compact design of the UPS device, simplifies the installation and disassembly process, and improves the efficiency of maintenance and detection.

[0049] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0051] Figure 1 A module schematic diagram of the first embodiment of the uninterruptible power supply system provided by the present application;

[0052] Figure 2 A module schematic diagram of a second embodiment of the uninterruptible power supply system provided by the present application;

[0053] Figure 3 A circuit diagram of the first embodiment of the uninterruptible power supply system provided by the present application;

[0054] Figure 4 A schematic diagram of the structure of the first embodiment of the uninterruptible power supply provided by the present application;

[0055] Figure 5 A partial structural diagram of the first embodiment of the uninterruptible power supply provided by the present application;

[0056] Figure 6 A partial structural diagram of a second embodiment of the uninterruptible power supply provided by the present application;

[0057] Figure 7 A module schematic diagram of an uninterruptible power supply of related technology;

[0058] Figure 8 A schematic diagram of a module of a first embodiment of an uninterruptible power supply provided by the present application;

[0059] Fig. 9 A specific circuit diagram of the first embodiment of the uninterruptible power supply system provided in this application.

[0060] The reference numerals in the specific implementation manner are as follows:

[0061] 01. Main power supply circuit; 02. Operation bypass; 10. Power input terminal; 20. Power output terminal; 30. Uninterruptible power supply; 40. Maintenance bypass; 41. Detection device; 42. Maintenance bypass switch; 21. Trigger switch; 12. Battery device; 13. Positive detection circuit; 14. Negative detection circuit; 15. Battery protection device; 16. Connector; 161. Positive detection terminal; 162. Negative detection terminal; 163. Protective cover; 164. Sealing pad; 16 5. Threaded hole; 17. Display screen; 18. Leakage protection device; 19. Protective cover; 231. Pressure difference relay coil; 232. Pressure difference relay switch; 241. Intermediate relay coil; 242. Intermediate relay switch; 3. AC power line; 4. Terminal equipment power supply line; 100. Shell; 210. Input filter circuit; 220. Rectifier circuit; 230. Inverter circuit; 240. Output filter circuit; 250. Charging module; 260. Boost circuit.

[0062] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0063] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0065] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0066] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0067] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0068] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0069] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0070] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" 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, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0071] Uninterruptible power supply 30, also known as UPS (Uninterruptible Power Supply, Uninterruptible Power Supply 30) equipment is increasingly being used. For example, in manufacturing and industrial production lines, UPS equipment provides stable power support for automated control systems, robots and precision processing equipment, ensuring uninterrupted operation of production lines and reducing production losses caused by power outages. Hospitals, clinics and other medical institutions also rely on UPS equipment to ensure continuous power supply for life support systems, operating room equipment and laboratory instruments. In the communication infrastructure, telecom operators and service providers use UPS to protect core network facilities such as switches, routers, and base stations to ensure the reliability of communication services. In commercial buildings and retail industries, such as shopping malls, office buildings and supermarkets, UPS equipment is installed to ensure the normal operation of key equipment such as elevators, security systems, and POS terminals, improve customer experience and ensure that business activities are not disturbed by power problems. In the field of transportation, transportation hubs such as airports, railway stations and subway stations use UPS to provide backup power for signal control, security equipment and information systems to ensure smooth traffic order and safe travel for passengers. With the continuous expansion of UPS application areas, its market demand is also rising.

[0072] The inventors have noticed that in industrial and commercial environments, in order to prevent abnormal shutdown of key equipment such as dehumidifiers, chillers, air compressors, etc. caused by grid voltage fluctuations (i.e., power swings), online integrated UPS devices are usually used in series in the control circuits of these main energy supply equipment. This type of UPS device can provide stable power output when the power supply is unstable to ensure the continuous operation of the equipment. However, when the UPS needs to be periodically powered off for maintenance or automatically switches from online mode to bypass operation mode due to internal hardware failure, the UPS device needs to be removed from the power supply line that supplies power to the load, and it is no longer possible to provide anti-power swing protection for the connected equipment, which may cause the protected equipment to lose the ability to shut down due to power swings, increasing the risk of unexpected shutdown. The existing online integrated UPS must interrupt the power supply of the protected equipment during maintenance and overhaul. This not only affects the reliable operation of the equipment, but also brings electrical hazards to the safety of the UPS equipment body. Although the use of a static switch device (STS) in parallel with the protected circuit can meet the need to remove the UPS device without powering off the control circuit, this method has obvious limitations: First, the procurement cost is high: the application of multiple STS devices increases the overall procurement cost. Secondly, the STS equipment is large in size and difficult to fit into the limited space of the on-site control box, and has poor compatibility with existing equipment.

[0073] Based on the above problems, the present application designs an uninterruptible power supply system, which aims to add a maintenance bypass 40, improve the problem that the online integrated UPS devices on the market do not have a maintenance bypass 40, and cannot meet the problem of removing the UPS device without powering off the control circuit of the protected device, and the problem that the protected control circuit is not compatible with existing equipment due to the addition of STS static switch devices, which are large in number and costly, and large in size. That is, the UPS device is connected in series in the control circuit of the protected device. When the UPS device needs to be maintained and repaired, if the UPS is removed, the control circuit will lose power, and then the protected device will not work properly. This goes against the original intention of the UPS device to provide power to the protected device and ensure the normal operation of the protected device.

[0074] The uninterruptible power supply system disclosed in the embodiment of the present application can be used in key areas such as data centers, medical institutions, industrial automation systems, communication infrastructure, financial service institutions, commercial buildings, transportation hubs, and educational institutions. The uninterruptible power supply system disclosed in the present application can be used to form a power protection solution for these fields, which is conducive to solving the hidden dangers of abnormal equipment shutdown caused by grid voltage fluctuations (power swings) and provides the following significant advantages: First, continuous power supply guarantee: Through the online integrated design, the uninterruptible power supply system can immediately take over the power supply task when the main power fails or is interrupted, ensuring that the connected key equipment will not stop working due to power outages and maintain business continuity. Second, enhance the ability to resist power swings: The maintenance bypass 40 function ensures that even when the UPS device needs periodic power outages for maintenance or automatically jumps to the bypass operation mode due to internal hardware failures, it can continue to provide online anti-power swing functions to avoid the protected equipment from losing its anti-power swing ability. Third, the introduction of the live switching maintenance bypass 40 design allows the UPS device to be removed for maintenance and repair without interrupting the power supply, ensuring the reliable operation of the protected equipment, while improving the safety and maintenance convenience of the UPS body.

[0075] The uninterruptible power supply system includes but is not limited to an uninterruptible power supply 30 (including UPS equipment). Figure 7As shown, the online integrated UPS device generally includes an input filter circuit 210, a rectifier circuit 220, a battery device 12, a boost circuit 260, an inverter circuit 230, an output filter circuit 240, an operation bypass 02, etc. Among them, the input filter circuit 210 is used to eliminate noise and interference in the power grid, ensure the purity of the input power supply, and protect the subsequent circuit from the influence of power grid fluctuations and electromagnetic interference; the rectifier circuit 220 converts the filtered AC power into DC power to output a stable DC voltage to the inverter circuit 230. The battery device 12 is used to store electrical energy to provide uninterrupted power supply to the rear-end load equipment when the main power supply is interrupted; the boost circuit 260 is used to further boost the DC power provided by the battery device 12 to meet the input requirements of the inverter; the inverter circuit 230 is used to convert DC power into AC power to provide AC power that is the same as the main power supply to ensure the normal operation of the load equipment; the output filter circuit 240 is used to filter out high-frequency noise and interference in the output signal of the inverter circuit 230 to ensure the purity and stability of the output voltage and protect the load equipment. Operation bypass 02 is used to directly connect the AC power to the load when the UPS device fails or requires maintenance, ensuring that the load device can continue to operate during the UPS device failure or maintenance.

[0076] According to some embodiments of the present application, referring to Figure 1 and Figure 8 , Figure 1 It is a module schematic diagram of an uninterruptible power supply system according to some embodiments of the present application, wherein the uninterruptible power supply system comprises a power input terminal 10, a power output terminal 20, an uninterruptible power supply 30 and a maintenance bypass 40;

[0077] The uninterruptible power supply 30 includes a main power supply circuit 01, a battery device 12 and an operation bypass 02, wherein the main power supply circuit 01 is connected to the power input terminal 10 and the power output terminal 20, the operation bypass 02 is connected in parallel with the main power supply circuit 01, and the battery device 12 is connected to the main power supply circuit 01;

[0078] The operation bypass 02 is used to output the power signal input from the power input terminal 10 to the power output terminal 20 when the voltage output from the main power supply circuit 01 is lower than a preset voltage or when the operation bypass 02 is triggered to enter a conducting state;

[0079] The maintenance bypass 40 connects the power input terminal 10 and the power output terminal 20; the maintenance bypass 40 is used to output the power signal input from the power input terminal 10 to the power output terminal 20 when it is triggered and detects that the operation bypass 02 is in the on state.

[0080] In this embodiment, the power input terminal 10 can be connected to the mains line 3 through a plug and a socket to access the mains and ensure a stable power supply from the power grid. The power output terminal 20 can also be connected to the power supply line of the terminal device by means of a plug and a socket to provide necessary power support for the terminal load device. The uninterruptible power supply 30 includes a main power supply circuit 01, a battery device 12, and an operating bypass 02. Among them, the main power supply circuit 01 is used to output the power signal input from the power input terminal 10 to the power output terminal 20, and is responsible for controlling various functions of the UPS device; in this embodiment, the main power supply circuit may include an input filter circuit 210, a rectifier circuit 220, an inverter circuit 230, and an output filter circuit 240, etc. The battery device 12 serves as a backup power source to supply power to the rear-end load equipment when the main power supply circuit 01 fails; and the operating bypass 02 is arranged between the power input terminal 10 and the power output terminal 20. When the voltage output by the main power supply circuit 01 is lower than the preset voltage or the operating bypass 02 is triggered to enter the on state, that is, when the uninterruptible power supply 30 detects its own failure, it will automatically switch from the main power supply circuit 01 to the operating bypass 02, and when triggered by the user, it will switch from the main power supply circuit 01 to the operating bypass 02, and work in the bypass operation mode, thereby ensuring that the load is continuously supplied with power.

[0081] The operation bypass 02 is used in the uninterruptible power supply to directly supply the power signal input from the power input terminal 10 to the load when the main power supply circuit 01 fails to work normally, so as to ensure the continuous power supply of the load. It is understandable that the noise and interference in the power signal connected to the power input terminal 10 may directly affect the load device. In order to improve the power quality and system reliability, the operation bypass 02 can also be separately provided with an input filter circuit 210 and an output filter circuit 240 to provide a stable power signal for the rear-end load. In this embodiment, the operation bypass 02 can share the input filter circuit 210 and the output filter circuit 240 with the main power supply circuit 01. By sharing the input filter circuit 210 and the output filter circuit 240 in the main power supply circuit 01, the number of components can be significantly reduced, thereby reducing the volume and manufacturing cost of the uninterruptible power supply 30.

[0082] In this embodiment, the operation bypass 02 is triggered to enter the on state in a variety of ways. Optionally, through a remote control triggering method, that is, receiving instructions from a remote management system through a network interface. Optionally, through a key triggering method, the user can directly press a physical button to manually switch to the bypass operation mode. Optionally, through a touch triggering method, if the uninterruptible power supply 30 has a touch screen interface, the user can touch the corresponding option on the screen to activate the bypass operation mode. Optionally, through a manual operation switch triggering method, such as using a mechanical switch, which can be a toggle switch, etc. The design of these triggering methods enables the uninterruptible power supply 30 to respond flexibly in different scenarios, ensuring the continuity and reliability of power supply. At the same time, a safe operation method is also provided to facilitate maintenance and rapid response in emergency situations. When the voltage output to the load of the main power supply circuit 01 drops below a preset safety threshold due to various reasons (such as input power failure, overload, etc.), in order to protect the connected load equipment from the influence of low voltage, the uninterruptible power supply 30 will automatically switch to the operation bypass 02. In addition, the case where the operation bypass 02 turns on the trigger signal to enter the on state means that there is an external or internal control signal (including a trigger signal manually triggered by the user or a signal output by the automatic control system of the uninterruptible power supply system). When this trigger signal is valid (i.e., the operation bypass 02 enters the on state), even if the main power supply circuit 01 is still working normally, the uninterruptible power supply system will switch to the bypass operation mode, and directly transmit the power of the power input terminal 10 to the power output terminal 20 through the operation bypass 02, bypassing the main power supply circuit 01 and the battery device 12. In this embodiment, the maintenance bypass 40 is also located between the power input terminal 10 and the power output terminal 20. When the trigger signal is received and it is detected that the operation bypass 02 conducts the electrical connection path between the power input terminal 10 and the power output terminal 20, that is, when the UPS automatically switches to the bypass operation mode due to a fault or switches to the bypass operation mode by human control, the maintenance bypass 40 will start to work, so as to be able to safely connect the city power directly to the power output terminal 20, thereby allowing the uninterruptible power supply 30 to be removed or repaired with power without affecting the normal operation of the load.

[0083] Under normal circumstances, the uninterruptible power supply 30 is in online mode, that is, the main power supply circuit 01 works, and the inverter inside it converts direct current into alternating current to supply the terminal device or use. When the uninterruptible power supply 30 detects that it cannot continue to provide stable output due to internal hardware failure or other reasons, it will automatically switch to bypass operation mode, at which time the city power is directly transmitted to the load through the operation bypass 02. When the uninterruptible power supply 30 needs to be dismantled and repaired, the operator can switch the uninterruptible power supply 30 from online mode to bypass operation mode through the control panel of the uninterruptible power supply 30 or the controller of the uninterruptible power supply system, that is, control the operation bypass 02 to work. At this time, the maintenance bypass 40 works when it receives a trigger and detects that the operation bypass 02 is in the on state. It should be noted that, in order to prevent the operator from triggering by mistake or making an operation error, the uninterruptible power supply 30 has not yet switched to the bypass operation mode, but has been manually switched to the maintenance bypass 40, which may cause a current loop conflict between the mains and the inverter output, resulting in short circuit or overload problems, as well as voltage fluctuations or interruptions caused by improper power switching, which in turn may cause damage to the connected sensitive equipment (such as the rear-end load). In this embodiment, the maintenance bypass 40 will only connect the power input terminal 10 and the power output terminal 20 when it detects that the uninterruptible power supply 30 is in the bypass operation mode. Even if the user triggers it through the corresponding control panel or trigger button, if the operation bypass 02 of the uninterruptible power supply 30 is not detected to be in the on state, the maintenance bypass 40 will not work. In this way, the maintenance bypass 40 will only work when it is triggered (for example, receives a trigger signal triggered by the user) and detects that the operating bypass 02 is working, connecting the power input terminal 10 and the power output terminal 20, outputting the power signal input by the power input terminal 10 to the power output terminal 20, and successfully switching the terminal device from the AC power supply path provided by the operating bypass 02 to the AC power supply path provided by the maintenance bypass 40, so that the uninterruptible power supply 30 can be removed for maintenance and repair while ensuring that the load is powered on.

[0084] In this embodiment, the power input terminal 10 is the part of the uninterruptible power supply system for connecting to the mains voltage. As the main power source, it is used to provide a stable AC power supply to the uninterruptible power supply 30, ensuring that the load is powered by the mains under normal circumstances, and charging the battery device 12 at the same time. It is usually in the form of a standard three-phase or single-phase plug and socket, with sufficient current carrying capacity and good electrical connection performance. Optionally, other types of power interfaces, such as industrial-grade wiring terminals or dedicated power connectors 16, can be used to meet the needs of different application scenarios. The power output terminal 20 refers to the part of the uninterruptible power supply system that connects the load (such as servers, medical equipment, etc.), which is responsible for providing uninterruptible power supply to these load devices, ensuring that even when the mains power is interrupted, the battery device 12 or other backup power supply inside the uninterruptible power supply 30 can continue to power the load. It is generally designed as a multi-way output socket or a dedicated distribution board, supporting plugs of various specifications, which is convenient for flexible configuration. Among them, the power input terminal 10 and the power output terminal 20 together constitute the power transmission path of the uninterruptible power supply system, the former introduces power, and the latter distributes power to each load. The operation bypass 02 is a circuit path set on the mainboard, located between the power input terminal 10 and the power output terminal 20, and is enabled when the uninterruptible power supply 30 fails. For example, when the UPS fails or needs to be repaired and maintained, it automatically or manually switches to the bypass operation mode, so that the mains power directly supplies power to the load to avoid power interruption caused by UPS failure. The operation bypass 02 is usually composed of components such as relays and contactors, and has a fast response capability and can complete the switching action within milliseconds. The control logic is integrated on the mainboard to ensure the safety and reliability of the switching process. As a backup channel between the power input terminal 10 and the power output terminal 20, the operation bypass 02 is in standby mode when the uninterruptible power supply 30 is working normally; once the uninterruptible power supply 30 fails, it quickly takes over the power supply task to ensure that the load is not affected. Alternatively, the operation bypass 02 will only work when the user manually switches to the bypass operation mode through the control panel. The maintenance bypass 40 is another independent circuit path provided between the power input terminal 10 and the power output terminal 20, and is used to maintain continuous power supply to the load during maintenance or overhaul of the uninterruptible power supply 30. When triggered by the user and detecting that the operation bypass 02 is activated, the maintenance bypass 40 will connect the power input terminal 10 and the power output terminal 20, ensuring that the load can still obtain a stable power supply even if the uninterruptible power supply 30 is shut down for maintenance or has an internal hardware failure.

[0085] In this embodiment, the configuration of the power input terminal 10 and the power output terminal 20 can be set according to specific needs. It can be a port defined inside the uninterruptible power supply 30, or it can be a new port specially designed for the maintenance bypass 40. If it is an internal integrated port, the power input terminal 10 and the power output terminal 20 are directly connected to the uninterruptible power supply 30. Such a design simplifies the installation process and reduces the need for external wiring. If it is a newly configured port to facilitate the connection of the maintenance bypass 40, as an independent port, when the uninterruptible power supply 30 needs to be repaired or replaced, the technician can connect the mains power directly to the load through the maintenance bypass 40, thereby bypassing the uninterruptible power supply 30. If there is a problem with the main power supply circuit 01, the maintenance bypass 40 can also intervene quickly to ensure that the load continues to receive power supply.

[0086] The maintenance bypass 40 can be implemented by using components such as intermediate relays and differential pressure relays, and an electrical switch is designed as an interlocking mechanism to ensure that it will only be closed when the preset conditions (such as voltage synchronization at both ends) are met. The protection level reaches IP54 or above, which can meet the use requirements in various environments. The maintenance bypass 40 will only work when the operating bypass 02 is working. In this way, even if the maintenance bypass 40 is enabled in normal operating state (non-bypass operating mode), the power input terminal 10 and the power output terminal 20 cannot be connected. The operating bypass 02 will only work in the bypass operating mode. In addition, a mechanical or electronic interlocking mechanism is usually provided between the operating bypass 02 and the maintenance bypass 40 to ensure that they are not closed at the same time, thereby improving the short circuit or overload problem that may be caused by the simultaneous conduction of the two bypass paths.

[0087] In practical applications, the uninterruptible power supply system provided in this embodiment realizes reliable management and protection of power supply and ensures stable operation of load equipment by reasonably configuring the power input terminal 10, the power output terminal 20, the operation bypass 02 and the maintenance bypass 40. When the maintenance bypass 40 is triggered and detects that the operation bypass 02 starts to work, that is, when the uninterruptible power supply 30 is switched to the bypass operation mode due to a fault or manually, the power input terminal 10 will be directly connected to the power output terminal 20. In this way, when switching to the maintenance bypass 40, the uninterruptible power supply 30 can be removed, so that the function of not affecting the normal operation of the load is realized when the uninterruptible power supply 30 is removed or repaired under power. In this way, the uninterruptible power supply system of the present application improves the problem that the traditional uninterruptible power supply 30 must be shut down during maintenance, and improves the safety and reliability of the power supply work of the uninterruptible power supply system.

[0088] According to some embodiments of the present application, referring to Figure 2 , the maintenance bypass 40 comprises:

[0089] A trigger switch 21, wherein the trigger switch 21 is arranged in series between the power input terminal 10 and the power output terminal 20, and the trigger switch 21 is used to connect the power input terminal 10 and the power output terminal 20 when being triggered to be turned on;

[0090] A detection device 41, the detection device 41 is connected to the power input terminal 10 and the power output terminal 20 respectively, and the detection device 41 is used to output a control signal when triggered by a preset voltage difference between the power input terminal 10 and the power output terminal 20;

[0091] The maintenance bypass switch 42 is arranged in series between the trigger switch 21 and the power output terminal 20; the maintenance bypass switch 42 is used to be turned on when receiving the control signal to output the power signal input from the power input terminal 10 to the power output terminal 20.

[0092] Optionally, the detection device 41 may include a voltage sensor and a microcontroller, and the preset voltage difference is set in advance by the R&D personnel. The maintenance bypass switch 42 is arranged between the power input terminal 10 and the maintenance bypass 40 line. It is an electronic switch (such as a solid-state relay or a mechanical contactor) that can quickly respond to the control signal. It determines whether to be turned on according to the control signal from the microcontroller in the detection device 41, so as to realize the direct supply of power from the mains to the power output terminal 20. When the uninterruptible power supply 30 needs to be repaired, the operator presses the trigger key / button corresponding to the trigger switch 21 to turn on the trigger switch 21. After the trigger switch 21 is turned on, the detection device 41 will be triggered by the voltage difference between the power input terminal 10 and the power output terminal 20 and output a control signal. For example, once the voltage difference between the power input terminal 10 and the power output terminal 20 reaches a preset voltage difference, the detection device 41 will output a control signal to the maintenance bypass switch 42, so that the maintenance bypass switch 42 is turned on after receiving the control signal, so that the power input terminal 10 is directly connected to the power output terminal 20 through the corresponding line of the maintenance bypass 40, completing the non-stop switching operation from the uninterruptible power supply 30 to the mains power supply. When the maintenance bypass 40 is working, the uninterruptible power supply 30 can be safely removed from the uninterruptible power supply system for maintenance or repair work. It is understandable that during the normal operation of the uninterruptible power supply system, the main power supply circuit 01 is responsible for providing power to the load, and the battery device 12 serves as a backup power supply to supply power to the load when the main power supply circuit 01 fails. At this time, the trigger switch 21 is disconnected to ensure that the maintenance bypass 40 does not interfere with normal power transmission.

[0093] It is understandable that after the uninterruptible power supply system is installed, the technician can set a reasonable preset voltage difference for the detection device 41 through the configuration interface (including the control panel). Usually, this threshold should be as small as possible (such as less than or equal to 1V) to ensure that the voltages at both ends are almost synchronized during switching to avoid impact on the load. For example, when the voltage difference between the power input terminal 10 and the power output terminal 20 is 0.5V, the detection device 41 will output a control signal to the maintenance bypass switch 42 to turn on the maintenance bypass switch 42, and the maintenance bypass 40 will work normally, that is, the uninterruptible power supply system works in the maintenance mode; when the voltage difference between the power input terminal 10 and the power output terminal 20 is 2.5V, the maintenance bypass switch 42 does not receive a valid control signal and is in a disconnected state, that is, the maintenance bypass 40 is in a non-working state.

[0094] In this embodiment, the voltage sensor continuously detects the voltage between the power input terminal 10 and the power output terminal 20. When the uninterruptible power supply 30 detects that it has a fault, it automatically switches to the bypass operation mode, or the user switches the uninterruptible power supply 30 to the bypass operation mode through the control panel, the operator presses the trigger key / button corresponding to the trigger switch 21 to close the trigger switch 21, and the microcontroller calculates the difference between the power input terminal 10 and the power output terminal 20 according to the voltage data collected by the voltage sensor. When the voltage difference reaches or is lower than the preset voltage difference, the microcontroller immediately generates a control signal and sends it to the maintenance bypass switch 42. After receiving the control signal, the maintenance bypass switch 42 closes, so that the city power is directly connected to the power output terminal 20 through the maintenance bypass 40 line. With the operation of the maintenance bypass 40, the uninterruptible power supply 30 can be safely removed from the circuit for necessary maintenance or repair work.

[0095] It should be noted that in order to ensure the safety and accuracy of the switching process, the detection device 41 should perform voltage difference detection at a high frequency to ensure timely response even under transient conditions. The determination of the preset voltage difference value needs to take into account factors such as the fluctuation characteristics of the power grid, the tolerance of the terminal equipment, and the output voltage stability of the uninterruptible power supply 30. It is generally recommended not to exceed 1V, and the specific value can be adjusted according to actual conditions. Considering the large current carrying capacity and the need for rapid response, a solid-state relay with a sufficiently high rated current or a high-performance mechanical contactor can be selected as the maintenance bypass switch 42.

[0096] Through the above-mentioned settings, the uninterruptible power supply system provided in this embodiment not only realizes the removal and maintenance of the uninterruptible power supply 30 without power outage of the protected equipment, but also ensures the electrical safety and reliability during the switching process by introducing the voltage detection function, thereby improving the stability and maintenance convenience of the entire uninterruptible power supply system.

[0097] According to some embodiments of the present application, referring to Figure 3 , the detection device 41 includes a pressure difference relay, the pressure difference relay has a pressure difference relay coil 231 and a pressure difference relay switch 232, the pressure difference relay coil 231 is arranged between the power input terminal 10 and the power output terminal 20; the first end of the pressure difference relay switch 232 is electrically connected to the power input terminal 10, and the controlled end of the pressure difference relay switch 232 is connected to the pressure difference relay coil 231;

[0098] The maintenance bypass switch 42 is an intermediate relay, and the intermediate relay includes an intermediate relay coil 241 and an intermediate relay switch 242. The intermediate relay coil 241 is connected to the second end of the pressure difference relay switch 232. The intermediate relay switch 242 is arranged between the trigger switch 21 and the power supply output end 20. The controlled end of the intermediate relay switch 242 is connected to the intermediate relay coil 241.

[0099] In combination with the above embodiments, according to factors such as grid fluctuation characteristics, the tolerance of terminal equipment and the stability of UPS output voltage, R&D personnel can set the action threshold of the pressure difference relay coil 231 in advance (for example, it will act when the voltage difference is less than or equal to 1V).

[0100] In this embodiment, when the uninterruptible power supply 30 needs to be repaired, the operator presses the trigger key / button corresponding to the trigger switch 21 to close the trigger switch 21, and the differential pressure relay coil 231 continuously monitors the voltage difference between the power input terminal 10 and the power output terminal 20, but at this time the differential pressure relay switch 232 remains in the disconnected state and does not issue any control instructions to the intermediate relay. When the voltage difference between the power input terminal 10 and the power output terminal 20 reaches the preset voltage difference value (i.e., almost synchronously), it means that the uninterruptible power supply 30 is working in the bypass operation mode, that is, the operation bypass 02 is in the working state, then the differential pressure relay coil 231 is actuated, so that the differential pressure relay switch 232 is closed. Subsequently, the current flows through the intermediate relay coil 241, which in turn causes the intermediate relay switch 242 to close, thereby connecting the city power directly to the power output terminal 20 through the maintenance bypass 40 line. After the maintenance bypass 40 is working, the uninterruptible power supply 30 can be safely removed for necessary maintenance or repair work. In this embodiment, in order to prevent the problem of misoperation, for example, when the uninterruptible power supply 30 has not been successfully switched from the online mode to the bypass operation mode, the user presses the trigger key / button corresponding to the trigger switch 21 to close the trigger switch 21, resulting in problems such as short circuit or overload, causing damage to the uninterruptible power supply system. The present application sets a pressure difference relay and an intermediate relay, which are used in conjunction with the trigger switch 21. Only when the voltage difference between the power input terminal 10 and the power output terminal 20 is less than or equal to the preset voltage difference, the pressure difference relay coil 231 will be triggered, that is, the pressure difference relay coil 231 will control the pressure difference relay switch 232 to close, so that the intermediate relay coil 241 is energized, and the intermediate relay switch 242 is closed accordingly. In this way, the uninterruptible power supply system is switched from the operation bypass 02 to the maintenance bypass 40.

[0101] refer to Figure 3 , Figure 3A circuit diagram of an embodiment of an uninterruptible power supply system provided in the present application. Among them, the power input terminal 10 and the power output terminal 20 are both implemented in the form of a plug and a socket, that is, the uninterruptible power supply 30 is connected to the mains line 3 via a plug and a socket, and is connected to the load device via another plug and a socket to supply power to the end load device (not shown). When the UPS needs to be repaired, the operator closes the trigger switch 21, and a switching voltage detection device 41 is provided on the maintenance bypass 40. According to the principle of determining the potential difference by the phase angle, the switching voltage detection device 41 determines whether the output power of the integrated UPS is the same source as the mains line 3 by collecting and monitoring the change of the voltage difference. The switching voltage detection device 41 includes a pressure difference relay coil 231, a pressure difference relay switch 232, an intermediate relay coil 241 and an intermediate relay switch 242, that is, the switching voltage detection device 41 is provided on the maintenance bypass 40. When the voltage difference between the power input terminal 10 and the power output terminal 20 is within 1V (including 1V), the differential pressure relay coil 231 is activated, and the differential pressure relay switch 232 in the normally open state is automatically closed, so that the intermediate relay coil 241 is energized, and the normally open contact of the intermediate relay (intermediate relay switch 242) is closed, otherwise, it cannot be closed. In this way, the safety of the uninterruptible power supply 30 and the operator is guaranteed. It should be noted that in this embodiment, the differential pressure relay switch 232 is the normally open contact of the differential pressure relay, and the intermediate relay switch 242 is the normally open contact of the intermediate relay. The differential pressure relay coil 231 is connected to the mains line 3 and the power output terminal 20, so the differential pressure relay coil 231 is always energized, but only when the voltage difference between the power input terminal 10 and the power output terminal 20 is within 1V (including 1V), the differential pressure relay coil 231 will be activated and the differential pressure relay switch 232 will be closed.

[0102] It is understandable that most of the integrated UPS devices on the market are not equipped with the maintenance bypass 40 function for cost considerations. Large UPS devices switch to the bypass operation mode through a mechanical interlocking device to prevent the mains power and the inverter circuit power of the battery device 12 from being closed at the same time, thereby reducing potential safety risks. The uninterruptible power supply 30 of the uninterruptible power supply system provided by the present application is an integrated UPS device, which introduces a voltage detection device 41 for automatic monitoring and ensuring that the maintenance bypass 40 is allowed to work only when the operating bypass 02 is working, that is, the inverter or other power supply is disconnected and there is no current loop conflict. In this way, instead of a mechanical interlocking device, the present application uses an electrical switch to form an interlocking mechanism, which improves the short circuit or overload problems that may be caused by direct parallel connection between different power supplies. Not only does it improve the reliability and safety of the uninterruptible power supply system, but it also simplifies the operating process and reduces the possibility of human error.

[0103] like Figure 3As shown, the uninterruptible power supply system also includes an output protection circuit, which is arranged on the line between the terminal device power supply line 4 and the load. In this embodiment, the output protection circuit can be implemented by an air switch, such as Figure 3 As shown, the output protection circuit is implemented using an air switch Q. If the current output by the power output terminal 20 reaches a third preset current threshold due to some reason (such as short circuit, overload, etc.), the air switch Q will immediately trip and disconnect to reduce damage to the uninterruptible power supply system and the back-end load equipment.

[0104] The uninterruptible power supply system provided in this embodiment not only realizes the live removal and maintenance of the uninterruptible power supply 30 without powering off the protected equipment, but also provides additional overload and short-circuit protection by triggering the switch 21, thereby ensuring electrical safety and reliability during the switching process and improving the stability and safety of the uninterruptible power supply system.

[0105] It should be noted that the uninterruptible power supply 30 proposed in the present application includes a battery device 12, that is, the battery device 12 exists in a built-in form, which limits the ability to independently maintain or test the battery device 12. Generally, it is prohibited to open the housing 100 to measure the internal resistance of the battery device 12 before the uninterruptible power supply 30 is shut down, thereby protecting the user from electrical hazards. The integrated design, although compact and easy to install, will increase the complexity and time cost of operation when the battery device 12 needs to be regularly inspected or replaced.

[0106] To this end, according to some embodiments of the present application, referring to Figure 4 , the uninterruptible power supply 30 comprises:

[0107] A housing 100, wherein the battery device 12 is disposed in the housing 100;

[0108] A main board, the main board is arranged in the housing 100, and the main power supply circuit 01 and the operation bypass 02 are respectively arranged on the main board;

[0109] The connector 16 is electrically connected to the battery device 12 . The connector 16 is disposed on one side of the housing 100 and is used to connect to an external battery detection device 41 .

[0110] In this embodiment, the uninterruptible power supply 30 proposed in this application includes a battery device 12, that is, the battery device 12 is in a built-in form and is arranged in the housing 100 of the uninterruptible power supply 30, which limits the ability to independently maintain or test the battery device 12. Generally, it is prohibited to open the housing 100 to measure the internal resistance of the battery device 12 before the uninterruptible power supply 30 is shut down, thereby protecting the user from electrical hazards. Although the integrated structural design is compact and easy to install, when the battery device 12 needs to be regularly inspected or replaced, the operation complexity and time cost will be increased accordingly.

[0111] In this embodiment, the housing 100 provides physical protection for the uninterruptible power supply 30, and contains all key components, including the mainboard, the battery device 12, etc. Among them, the main power supply circuit 01 and the operating bypass 02 are respectively arranged on the mainboard; the battery device 12 is used to provide backup power support for the load when the city power is interrupted. The number of battery devices 12 can be multiple, and the specific number is set by the R&D personnel according to the actual power demand. The connector 16 is arranged on one side of the housing 100, and is electrically connected to the internal battery device 12, so as to facilitate the external battery detection device 41 to access through the connector 16 and perform performance testing on the battery device 12. The connector 16 can be arranged on the housing 100 in the form of an interface, for example, in the form of a socket, and is adapted to the plug of the external battery detection device 41. When the battery device 12 needs to be charged and discharged online, the plug of the external battery detection device 41 can be directly connected to the socket. In this way, there is no need to disassemble the housing 100 and take out the battery device 12 in the housing 100 for power testing. At the same time, for operational safety, the power is turned off before the battery device 12 is taken out, so the present application improves the problem of being unable to implement online charge and discharge detection.

[0112] It should be noted that the housing 100 can be made of a sturdy and durable material with good heat dissipation performance and protection level (e.g., IP54) to ensure that the internal components can work stably in various environments. A special space is reserved on the side of the housing 100 to install a capacity test connector 16 (referred to as connector 16). The capacity test connector 16 is an intermediate device for conveniently connecting the internal battery device 12 with the battery detection device 41, and can be used for connecting the battery inspection instrument with the battery device 12. The internal battery device 12 of the capacity test is placed in a preset arrangement to ensure good space utilization and heat dissipation effect. The positive and negative poles of each battery device 12 are respectively connected to independent detection circuits, and these detection circuits are finally converged at the capacity test connector 16, so as to directly connect to the external battery detection device 41, so as to realize the power detection function of the battery device 12. When it is necessary to perform a health check on the internal battery device 12 of the uninterruptible power supply 30, the relevant technicians only need to electrically connect the external battery detection device 41 to the connector 16. The external battery detection device 41 will automatically read various parameters of the battery device 12, such as voltage, internal resistance, etc., and feed back the results to evaluate the status of the battery device 12 and determine whether it needs to be replaced or repaired. The whole process is simple and quick, and does not require additional tools or disassembly of the uninterruptible power supply 30, which improves maintenance efficiency. Due to the presence of the connector 16, the battery device 12 detection can be performed at any time without worrying about affecting the normal operation of the uninterruptible power supply 30 or causing unnecessary downtime. The function of charging and discharging detection of the battery device 12 is realized when the uninterruptible power supply 30 is in normal online mode. In this way, the efficiency and convenience of charging and discharging detection of the battery device 12 are improved.

[0113] In one embodiment, reference Fig. 9 , the main power supply circuit 01 includes an input filter circuit 210, a rectifier circuit 220, an inverter circuit 230, an output filter circuit 240 and a boost circuit 260;

[0114] Among them, the power input end 10, the input filter circuit 210, the rectifier circuit 220, the inverter circuit 230, and the power output end 20 are electrically connected in sequence, the input end of the battery device 12 is connected to the output end of the input filter circuit 210, the output end of the battery device 12 is connected to the boost circuit 260, and the common connection end of the rectifier circuit 220 and the inverter circuit 230 is connected to the boost circuit 260.

[0115] In this embodiment, the input filter circuit 210 and the output filter circuit 240 can be implemented by a filter circuit composed of any one or more of a resistor, a capacitor, and an inductor. The rectifier circuit 220 can be implemented by a single diode, or a rectifier bridge composed of multiple diodes. The inverter circuit 230 can be implemented by a switch tube such as MOSFET, IGBT, etc. The boost circuit 260 can be implemented by a transformer, a multi-stage boost converter composed of multiple inductors and capacitors connected in series.

[0116] like Fig. 9 As shown, I / P is the power input terminal 10, and the input filter circuit 210 includes an inductor L9 for filtering high-frequency noise and interference in the mains. The rectifier circuit 220 includes a rectifier diode REC1 to convert AC power into DC power. The inverter circuit 230 includes switch tubes Q12 and Q13 to convert DC power into AC power. The output filter circuit 240 includes an inductor L1 and a capacitor C2 to filter out high-order harmonics generated by the inverter circuit 230 and provide a stable AC output. The positive terminal of the battery device 12 is BAT+, and the negative terminal of the battery device 12 is BAT-. The boost circuit 260 is composed of a transformer TX1 and peripheral devices. In the power supply mode of the battery device 12, the voltage of the battery device 12 is boosted to the required DC voltage, and output to the rear-end load through the inverter circuit 230 to power the load equipment. The switch tubes Q4, Q6, Q10 and Q11, the transformer TX1 and the rectifier circuit REC2 form a DC-DC converter, which is used to further process the direct current output by the battery device 12 and output it to the inverter circuit 230. K1 is an intermediate relay of the maintenance bypass 40, RY2 and RY1 are input relays and output relays respectively. When the mains power connected to the power input terminal 10 is normal, the input relay RY2 is energized, and when the mains power is abnormal, the input relay RY2 is disconnected; the output relay RY1 is used to switch the uninterruptible power supply 30 between the bypass operation mode and the online mode. It should be noted that the uninterruptible power supply system also includes a PFC circuit (Power Factor Correction Circuit) for adjusting the input current waveform of the power input terminal 10 to make it closer to a sine wave and keep it in phase with the input voltage, thereby improving the power factor and reducing harmonic distortion. In this embodiment, the PFC circuit includes a diode D10, a diode D11, a switch tube Q14, a first bus capacitor C13 and a second bus capacitor C12. The PFC circuit is a conventional power factor correction circuit and will not be described in detail here.

[0117] In practical applications, the input filter circuit 210 can effectively remove harmonics and interference signals in the mains, ensuring that the AC power entering the subsequent circuit is pure and stable. The rectifier circuit 220 converts the AC mains after filtering by the input filter circuit 210 into DC power for charging the battery device 12 or directly supplying the inverter circuit 230; the inverter circuit 230 then converts the DC power back into high-quality AC power to power the load. This bidirectional energy conversion mechanism improves the efficiency of the entire uninterruptible power supply system and reduces energy loss. The output filter circuit 240 smoothes the AC power generated by the inverter circuit 230, further purifies the output voltage, and provides a more stable power supply to the load device. In addition, when the mains voltage is lower than the normal working range of the uninterruptible power supply 30, the boost circuit 260 can increase the input voltage to a preset voltage level to ensure that the rectifier circuit 220 can work normally, while avoiding the need for an external boost device, simplifying the uninterruptible power supply system architecture and reducing costs.

[0118] In one embodiment, the first end of the maintenance bypass 40 is connected to the common connection end of the input filter circuit 210 and the rectifier circuit 220 , and the second end of the maintenance bypass 40 is connected to the common connection end of the inverter circuit 230 and the output filter circuit 240 .

[0119] In this embodiment, when the uninterruptible power supply system is switched from the main power supply circuit 01 to the maintenance bypass 40, the city power can be directly connected to the power input terminal 10, and after being filtered by the input filter circuit 210, it enters the output filter circuit 240 through the maintenance bypass 40 line, and reaches the load side after being filtered by the output filter circuit 240, without having to pass through other components inside the uninterruptible power supply 30 (such as the battery device 12, inverter, etc.). This design makes it possible for the uninterruptible power supply 30 to be in the maintenance mode (maintenance bypass 40 is working), and the sensitive electronic components inside the uninterruptible power supply 30, such as the battery device 12, inverter, etc., no longer participate in the power supply process, reducing the risk of them being damaged by accidental operation or external factors. The energy conversion links inside the UPS are reduced, thereby improving the overall energy efficiency and reducing energy consumption.

[0120] According to some embodiments of the present application, the uninterruptible power supply system further includes:

[0121] The leakage protection device 18 is electrically connected to the power output terminal 20 . The leakage protection device 18 is used to perform a leakage protection action in response to a leakage signal generated at the power output terminal 20 to cut off the power output of the power output terminal 20 .

[0122] In this embodiment, the leakage protection device 18 is installed on the side wall of the uninterruptible power supply 30, which is convenient for observation and maintenance, and is also convenient for wiring and integration with other components. Optionally, the leakage protection device 18 can be implemented by a residual current device (RCD, RCD). The residual current protector is also called a leakage circuit breaker. It is mainly used to trigger a protection mechanism when a leakage fault occurs in the equipment and for people who are in fatal danger. It has overload and short-circuit protection functions and can be used to protect the overload and short circuit of the line or motor. It can also be used as an infrequent conversion start of the line under normal circumstances. It can sensitively detect tiny leakage current changes and cut off the power supply within milliseconds to ensure safety. The output side residual current protector is specially used for 220V AC output. The appropriate model can be selected according to different load requirements. It is used to connect a standard socket or an aviation protection plug to ensure power safety and meet diverse connection requirements. Optionally, the residual current protector can detect the output current flowing out through the power output terminal 20, and when the output current exceeds a first preset current threshold, disconnect the electrical connection path between the power output terminal of the uninterruptible power supply system and the rear-end load. Optionally, the residual current protector can also disconnect the input power of the uninterruptible power supply system when it detects that the difference between the input current flowing in through the power input terminal 10 and the output current flowing out through the power output terminal 20 (i.e., the residual current) exceeds a preset current difference, cut off the leakage path, and reduce the risk of safety accidents caused by leakage.

[0123] It is understandable that the leakage protection device 18 can be equipped with an LED indicator light to display the current working status (normal / fault), and will trigger an alarm sound when leakage occurs, reminding the user to deal with it in time. Once a leakage trip occurs, the user can restart the uninterruptible power supply system by manually pressing the reset button, but potential electrical problems should be checked and repaired before recovery. During normal operation of the UPS, the leakage protection device 18 is in monitoring mode, continuously monitoring the leakage of the entire uninterruptible power supply system. That is, the sensor in the leakage protection device 18 continuously measures the current flowing through the uninterruptible power supply system and calculates the difference between the inflow and outflow currents (i.e., the residual current). If the residual current is detected to exceed the preset current difference, it is considered that a leakage phenomenon has occurred. The output power of the uninterruptible power supply system will be automatically disconnected, the leakage path will be cut off, and possible hazards will be prevented.

[0124] In actual applications, when leakage is detected in the line, that is, when current leaks out through unexpected paths (such as the human body or other conductive objects), the RCD will automatically disconnect the circuit, thereby effectively preventing electric shock accidents. In addition to leakage protection, many RCDs also have overload protection functions, which can cut off the power supply when the current exceeds the set safety range, protecting wires and electrical appliances from the risk of damage due to overheating. In the face of sudden high-current short-circuit events, RCDs can also respond quickly to avoid electrical fires and other serious consequences. In this way, the safety and reliability of the uninterruptible power supply system are further improved.

[0125] According to some embodiments of the present application, the leakage protection device 18 is disposed on a side wall of the uninterruptible power supply 30 .

[0126] The uninterruptible power supply system also includes:

[0127] The protective cover 19 covers the leakage protection device 18 .

[0128] In this embodiment, the protective cover 19 can be made of metal, plastic, composite materials (such as glass fiber reinforced plastic FRP, carbon fiber composite materials, etc.). The selection of the protective cover 19 can be realized according to the use environment of the uninterruptible power supply system, etc., to ensure that the protective cover 19 can not only effectively protect the leakage protection device 18 from external factors, but also prevent operators or other objects from accidentally contacting live parts or sensitive components, reduce the risk of electric shock and the possibility of mechanical damage, and ensure the convenience and safety of maintenance personnel. The protective cover 19 is used to expose the operating mechanism of the leakage protection device 18 and prevent the external live wiring terminals from being exposed, playing a safety protection role. In this embodiment, the material of the protective cover 19 is high temperature resistant, insulating engineering plastic, and is fixed with screws and can be removed. The protection level is IP34.

[0129] Optionally, if a dustproof and waterproof protective cover 19 is used, by providing a closed environment, the protective cover 19 can block external pollutants such as dust and water vapor from entering the interior of the leakage protection device 18, ensuring its long-term stable operation. The fixing method of the protective cover 19 (such as screws, clips, etc.) should take into account the ease of use of the tool and the need for quick operation, ensuring that the maintenance process is simple and efficient.

[0130] In practical applications, the protective cover 19 provides a physical barrier for the leakage protection device 18, reduces the risk of accidental contact with live parts, and enhances the safety level of the entire uninterruptible power supply system. In addition, the protective cover 19 helps maintain the working environment of the leakage protection device 18, avoids malfunction or failure caused by changes in external conditions, and ensures that it is always in a reliable operating state.

[0131] According to some embodiments of the present application, the uninterruptible power supply system further includes:

[0132] A battery protection device 15 is provided in series between the battery device 12 and the connector 16 , and is used to disconnect the electrical connection between the battery device 12 and the connector 16 when a current fault occurs in the battery device 12 .

[0133] In combination with the above embodiments, a battery protection device 15 is connected in series between the positive electrode detection circuit and the positive terminal of the battery device 12 to provide overcurrent protection. In this embodiment, the battery protection device 15 can be implemented by a fuse. The fuse, as an overcurrent protection device, is arranged in series on the positive electrode detection circuit between the positive electrode of the battery device 12 and the connector 16. Its main function is to quickly blow when an abnormally large current (such as a short circuit or severe overload) occurs in the circuit. For example, when the current in the circuit where the battery device 12 is located reaches the second preset current threshold, the fuse cuts off the circuit, thereby protecting the battery device 12, the connector 16 and other components of the entire uninterruptible power supply system from damage. In this embodiment, the battery protection device 15 disconnects the electrical connection between the output end of the battery device 12 and the connected device when a current fault occurs in the battery device 12. For example, the electrical connection between the battery device 12 and the connector 16 is disconnected, or the electrical connection between the battery device 12 and the load is disconnected. In this way, the battery device 12 and the related equipment electrically connected to the battery device 12 are effectively protected.

[0134] It should be noted that the fuse should be installed as close as possible to the positive end of the battery device 12 to ensure effective protection throughout the current path. At the same time, the heat dissipation requirements should be taken into account to avoid affecting the working performance of the fuse due to excessive temperature. The fuse and its surrounding area should be clearly marked for easy identification and replacement. Check the status of the fuse regularly. The fuse can respond to abnormal current within milliseconds and quickly cut off the circuit to prevent overheating, explosion or permanent damage to the battery device 12 caused by overcurrent. By setting a fuse between the battery device 12 and the connector 16, it is possible to avoid large currents directly impacting the connector 16, reduce the risk of arc erosion of the jack structure, and extend the service life of the connector 16. In addition, the melting of the fuse is an obvious physical change that is easy to detect and replace, which helps to quickly locate and repair the problem and shorten the recovery time. By timely cutting off the faulty circuit, the opportunity for operators to contact live parts is reduced, and the safety during maintenance is improved. The use of fuses can simplify circuit design, reduce the need for other complex protection circuits, and reduce the complexity and potential failure points of the overall system.

[0135] To sum up, setting a fuse between the positive terminal of the battery device 12 and the connector 16 of the uninterruptible power supply system not only provides reliable overcurrent protection for the battery device 12 and the connector 16, but also significantly improves the safety, reliability and maintenance convenience of the uninterruptible power supply system.

[0136] The present application also proposes an uninterruptible power supply 30, referring to Figure 4 , the uninterruptible power supply 30 comprises:

[0137] Housing 100;

[0138] A mainboard, the mainboard is arranged in the housing 100, and a main power supply circuit 01 and an operation bypass 02 are arranged on the mainboard; the main power supply circuit 01 has an input end and an output end, the input end of the operation bypass 02 is connected to the input end of the main power supply circuit 01, and the output end of the operation bypass 02 is connected to the output end of the main power supply circuit 01; the operation bypass 02 is used to output the input power signal to the power output end 20 when the voltage output by the main power supply circuit 01 is lower than a preset voltage or when the operation bypass 02 is triggered to enter a conducting state;

[0139] A battery device 12, the battery device 12 is disposed in the housing 100, and the battery device 12 is electrically connected to the main power supply circuit 01; the battery device 12 is used to output power to the main power supply circuit 01 when the input voltage of the main power supply circuit 01 is lower than a preset voltage;

[0140] The connector 16 is electrically connected to the battery device 12 . The connector 16 is disposed on one side of the housing 100 and is used to connect to an external battery detection device 41 .

[0141] In this embodiment, the housing 100 provides physical protection for the uninterruptible power supply 30, and contains all key components, including the mainboard, the battery device 12, etc. The mainboard is provided with a main power supply circuit 01 and a battery device 12, wherein the main power supply circuit 01 is responsible for outputting the power signal input from the power input terminal 10 to the power output terminal 20, at which time the uninterruptible power supply 30 works in an online mode. The battery device 12 is used to start and provide power immediately when the input voltage of the main power supply circuit 01 is lower than the preset voltage due to power failure, voltage instability or other reasons. Ensure that the load equipment will not stop working due to a sudden power failure. The battery device 12 is installed in the housing 100 to provide backup power support for the load when the city power is interrupted. The number of battery devices 12 can be multiple, and the specific number is set by the R&D personnel according to the actual power demand. The connector 16 is arranged on one side of the housing 100 and is electrically connected to the internal battery device 12, so the uninterruptible power supply 30 proposed in this application is an integrated UPS device, including a built-in battery device 12. In order to facilitate the external battery detection device 41 to access through the connector 16 and perform performance detection on the battery device 12. The connector 16 can be set on the housing 100 in the form of an interface. For example, the assembly method between the capacity test connector 16 (also called connector 16) and the side wall of the housing 100 of the uninterruptible power supply 30 is transition embedded and fixed with screws. The connector 16 includes a positive detection terminal 161 (hole) and a negative detection terminal 162 (hole), and adopts a female plug type. This design method is convenient for plug-in detection and avoids mechanical damage.

[0142] It should be noted that the housing 100 can be made of a sturdy and durable material with good heat dissipation performance and protection level (e.g., IP54) to ensure that the internal components can work stably in various environments. A special space is reserved on the side of the housing 100 to install a capacity test connector 16 (referred to as connector 16). The capacity test connector 16 is an intermediate device for conveniently connecting the internal battery device 12 with the battery device 12 detection device 41, and can be used for connecting the battery inspection instrument with the battery device 12. The battery device 12 is placed in a preset arrangement to ensure good space utilization and heat dissipation effect. The positive and negative electrodes of each battery device 12 are respectively connected to independent detection circuits, and these detection circuits are finally converged at the capacity test connector 16, that is, the positive terminal of the battery device 12 is connected to the positive detection hole of the connector 16 via the positive detection circuit, and the negative terminal of the battery device 12 is connected to the negative detection hole of the connector 16 via the negative detection circuit 14, so as to directly connect to the external battery detection device 41, thereby realizing the power detection function of the battery device 12.

[0143] It is understandable that the uninterruptible power supply 30 also includes: a display screen 17, which is used to display the operating information and key parameters of the uninterruptible power supply 30 in real time, so that the user can understand the working status of the uninterruptible power supply 30 at any time. Optionally, the display content of the display screen 17 includes but is not limited to input voltage: real-time display of the mains input voltage, such as 220V AC. Output voltage: Displays the voltage output by the uninterruptible power supply 30 to the load to ensure stable power supply. Frequency: Displays the frequency of the mains and inverter output. Battery device 12 status: Indicates the charging status of the battery device 12 (full charge, charging, low battery, etc.), and displays the remaining time. Fault code: When a fault is detected inside the UPS, a specific fault code is displayed, such as E01 indicating an inverter fault. In this way, the user experience is improved.

[0144] When it is necessary to perform a health check on the battery device 12 inside the uninterruptible power supply 30, the relevant technicians only need to electrically connect the external battery detection device 41 to the connector 16. The external battery detection device 41 will automatically read the various parameters of the battery device 12, such as voltage, internal resistance, etc., and feedback the results to evaluate the status of the battery device 12 and determine whether it needs to be replaced or repaired. In this way, the entire detection process is simple and quick, and no additional tools or disassembly of the uninterruptible power supply 30 are required, which improves maintenance efficiency. Due to the presence of the connector 16, the battery device 12 detection can be performed at any time without worrying about affecting the normal operation of the uninterruptible power supply 30 or causing unnecessary downtime. The function of charging and discharging detection of the battery device 12 is realized when the uninterruptible power supply 30 is in normal online mode. In this way, the efficiency and convenience of charging and discharging detection of the battery device 12 are improved.

[0145] According to some embodiments of the present application, the connector 16 includes a positive detection terminal 161 and a negative detection terminal 162, the battery device 12 includes a positive terminal and a negative terminal, the positive detection terminal 161 is electrically connected to the positive terminal, and the negative detection terminal 162 is connected to the negative terminal.

[0146] In this embodiment, the uninterruptible power supply 30 is provided with a plurality of battery devices 12 for supplying power to load devices during a power outage, and the positive terminal of each battery device 12 is connected to a positive electrode detection circuit, and the negative terminal of each battery device 12 is connected to a negative electrode detection circuit 14. The other end of the positive electrode detection circuit is connected to a plurality of positive electrode detection terminals 161 inside the connector 16, and the other end of the negative electrode detection circuit 14 is connected to a plurality of negative electrode detection terminals 162 inside the connector 16.

[0147] In this embodiment, by connecting the battery device 12 detection device 41 to the corresponding positive electrode detection terminal 161 and negative electrode detection terminal 162 of each battery device 12 via the connector 16, the performance of the battery device 12 can be extended to detect, thereby avoiding the battery device 12 from operating with faults, thereby reducing the safety hazards caused by the faulty operation of the battery device 12.

[0148] Optionally, the connector 16 further includes:

[0149] A female jack socket, wherein the female jack socket is provided with at least two jacks;

[0150] The positive pole detection terminal 161 and the negative pole detection terminal 162 are respectively disposed in the two sockets of the female socket seat.

[0151] In this embodiment, the female jack is part of the connector 16 and is designed to receive the male pin. It can be made of insulating material to ensure safe electrical isolation and has at least two jacks inside to match the corresponding male pins. The connector 16 adopts a female jack structure, which is designed to facilitate plug-in detection and reduce the risk of mechanical damage.

[0152] In combination with the above embodiments, the connection area includes a plurality of positive electrode detection holes and negative electrode detection holes, and adopts a female jack design to facilitate the insertion of the probe of the external battery detection device 41. That is, the user can connect the battery device 12 inspection instrument or other compatible detection equipment to the capacity test connector 16, refer to Fig. 9 The positive terminal BAT+ and the negative terminal BAT- of the battery device 12 are respectively connected to the positive detection terminal 161 and the negative detection terminal 162 of the connector 16, and the voltage, internal resistance and other parameters of the battery device 12 can be measured without disassembling the uninterruptible power supply 30 or removing the housing 100, so as to timely discover potential problems and take preventive measures in advance. During the normal operation of the uninterruptible power supply 30, the connector 16 does not participate in the actual power supply path, but always maintains an electrical connection with the battery device 12 and can receive monitoring requests at any time.

[0153] In summary, the uninterruptible power supply system provided in this embodiment simplifies the state monitoring process of the internal battery device 12, improves the maintenance efficiency, and realizes the function of charging and discharging detection of the battery device 12 when the uninterruptible power supply 30 is in the normal online mode. In this way, the efficiency and convenience of charging and discharging detection of the battery device 12 are improved.

[0154] According to some embodiments of the present application, reference Figure 4 , the uninterruptible power supply 30 comprises:

[0155] The protective cover 163 is disposed on the housing 100 , and the protective cover 163 covers the connector 16 .

[0156] In this embodiment, a protective cover 163 is installed outside the capacity test connection, and the protective cover 163 is implemented by insulating, fatigue-resistant, flame-retardant opaque hard engineering plastics (such as modified ABS or polycarbonate PC, etc.). Optionally, the opening mode of the protective cover 163 can be a fully open and fully closed type, ensuring that it can be fully opened for maintenance or inspection when necessary, and providing comprehensive protection in the closed state. Optionally, the protective cover 163 can be made of transparent, high-strength and flame-retardant polycarbonate (PC) material, which is convenient for relevant technicians to view the status indicator of the connector 16 or perform preliminary troubleshooting without opening the protective cover 163. In addition to having basic protection functions, it also increases the convenience of operation and the intuitive visibility of the equipment status, which is suitable for applications that require frequent inspections. In this way, the protective cover 163 can effectively prevent dust and water, and provide necessary electrical insulation to ensure the safety of operators and the normal operation of the uninterruptible power supply 30.

[0157] According to some embodiments of the present application, reference Figure 4 and Figure 6 A sealing gasket 164 is provided between the protective cover 163 and the housing 100, and / or a threaded hole 165 is provided on the protective cover 163, and the protective cover 163 is fixedly connected to the housing 100 by screws.

[0158] In this embodiment, considering the characteristics of the material of the protective cover 163, the threaded hole 165 can be directly processed on the protective cover 163, or embedded in a metal bushing to enhance the strength and durability of the thread. The depth of the threaded hole 165 should be long enough to ensure that the screw can be firmly fixed, but cannot penetrate the protective cover 163. In addition, it is necessary to reasonably arrange the number of threaded holes 165 according to the size and shape of the protective cover 163, such as at least two threaded holes 165 on each side, to ensure uniformly distributed fixing force.

[0159] In this embodiment, stainless steel flat head screws are used for fixing, and a dustproof pad can be installed between the contact surface of the protective cover 163 and the housing 100 to further improve the overall protection level and reach IP54 or higher dustproof and waterproof standards. For example, a rubber dustproof pad is provided to ensure long-term reliability.

[0160] In this embodiment, a sealing gasket 164 is installed between the protective cover 163 and the side wall of the uninterruptible power supply 30, and the sealing gasket 164 needs to have high temperature resistance, anti-aging, and insulation performance. It is effective in dust and water prevention, and the insulation design reduces the safety risks to operators when the uninterruptible power supply 30 fails and leaks. Optionally, the sealing gasket 164 can be implemented by silicone rubber, fluororubber, etc. The shape of the sealing gasket 164 can be set according to the shape of the contact surface between the protective cover 163 and the side wall of the uninterruptible power supply 30, usually a rectangular strip or annular gasket, to ensure that all potential gaps are fully covered. The installation method of the sealing gasket 164 can be implemented by adhesive, embedded, clamping, etc. Taking embedded as an example, a groove is pre-designed in the side wall of the protective cover 163 or the housing 100, and the sealing gasket 164 is embedded therein. In this way, better positioning and fixing effects are provided, which is suitable for application scenarios of frequent disassembly and assembly. In combination with the above embodiments, after the dustproof pad and the sealing pad 164 are installed to the corresponding positions, the protective cover 163 is aligned with the threaded hole 165 on the side wall of the housing 100 of the uninterruptible power supply 30, and the screws are tightened with a tool.

[0161] The threaded hole 165 and the screw fixing method ensure that the protective cover 163 is firmly mounted on the housing 100, effectively protecting the internal connector 16 from external factors. The combination of the threaded hole 165 and the screw facilitates disassembly and reinstallation, simplifying daily maintenance work. In addition, the design of the sealing gasket 164 can effectively prevent dust and water vapor from entering the uninterruptible power supply 30, protecting the connector 16 and other sensitive components. In addition, the sealing gasket 164 can be made of a material with good insulation performance, which can reduce the safety risk to the operator to a certain extent even if the uninterruptible power supply 30 fails and leaks.

[0162] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An uninterruptible power supply system, characterized in that: Including power input terminal, power output terminal, uninterruptible power supply and maintenance bypass; The uninterruptible power supply comprises a main power supply circuit, a battery device and an operation bypass, wherein the main power supply circuit is connected to the power input end and the power output end, and the operation bypass is connected in parallel with the main power supply circuit; The operation bypass is used to output the power signal input from the power input end to the power output end when the voltage output from the main power supply circuit is lower than a preset voltage or when the operation bypass is triggered to enter a conducting state; The maintenance bypass is connected to the power input end and the power output end; The maintenance bypass is used to output the power signal input from the power input end to the power output end when it is triggered and detects that the operation bypass is in an on state.

2. The uninterruptible power supply system according to claim 1, characterized in that: The maintenance bypass comprises: A trigger switch, the trigger switch is arranged in series between the power input terminal and the power output terminal, and the trigger switch is used to connect the power input terminal and the power output terminal when being triggered to conduct; a detection device, the detection device being connected to the power input terminal and the power output terminal respectively, and the detection device being configured to output a control signal when triggered by a preset voltage difference between the power input terminal and the power output terminal; A maintenance bypass switch is arranged in series between the trigger switch and the power output end; the maintenance bypass switch is used to be turned on when receiving the control signal to output the power signal input from the power input end to the power output end.

3. The uninterruptible power supply system according to claim 2, characterized in that: The detection device comprises a pressure difference relay, the pressure difference relay comprises a pressure difference relay coil and a pressure difference relay switch, the pressure difference relay coil is arranged between the power input end and the power output end; the first end of the pressure difference relay switch is electrically connected to the power input end, and the controlled end of the pressure difference relay switch is connected to the pressure difference relay coil; The maintenance bypass switch includes an intermediate relay, which has an intermediate relay coil and an intermediate relay switch. The intermediate relay coil is connected to the second end of the pressure difference relay switch. The intermediate relay switch is arranged between the trigger switch and the power supply output end, and the controlled end of the intermediate relay switch is connected to the intermediate relay coil.

4. The uninterruptible power supply system according to any one of claims 1 to 3, characterized in that: The main power supply circuit includes an input filter circuit, a rectifier circuit, an inverter circuit, an output filter circuit and a boost circuit; The power input terminal, the input filter circuit, the rectifier circuit, the inverter circuit, and the power output terminal are electrically connected in sequence, the input terminal of the battery device is connected to the output terminal of the input filter circuit, the output terminal of the battery device is connected to the boost circuit, and the common connection terminal of the rectifier circuit and the inverter circuit is connected to the boost circuit.

5. The uninterruptible power supply system according to claim 4, characterized in that: The first end of the maintenance bypass is connected to the common connection end of the input filter circuit and the rectifier circuit, and the second end of the maintenance bypass is connected to the common connection end of the inverter circuit and the output filter circuit.

6. The uninterruptible power supply system according to any one of claims 1 to 3, characterized in that: The uninterruptible power supply system also includes: A leakage protection device is electrically connected to the power output end; the leakage protection device is used to perform a leakage protection action in response to a leakage signal generated at the power output end to cut off the power output of the power output end.

7. The uninterruptible power supply system according to claim 6, characterized in that: The leakage protection device is arranged on the side wall of the uninterruptible power supply, and the uninterruptible power supply system further comprises: A protective cover is provided for covering the leakage protection device.

8. The uninterruptible power supply system according to any one of claims 1 to 3, characterized in that: The uninterruptible power supply also includes: a housing, wherein the battery device is disposed in the housing; A main board, the main board is arranged in the housing, and the main power supply circuit and the operation bypass are respectively arranged on the main board; A connector is electrically connected to the battery device and is disposed on one side of the housing for connecting to an external battery detection device.

9. The uninterruptible power supply system according to claim 8, characterized in that: The uninterruptible power supply system also includes: A battery protection device is arranged in series between the battery device and the connector, and is used to disconnect the electrical connection between the battery device and the connector in the event of a current failure in the battery device.

10. An uninterruptible power supply, characterized in that: The uninterruptible power supply comprises: case; A mainboard, the mainboard is arranged in the shell, and a main power supply circuit and an operation bypass are arranged on the mainboard; the main power supply circuit has an input end and an output end, the input end of the operation bypass is connected to the input end of the main power supply circuit, and the output end of the operation bypass is connected to the output end of the main power supply circuit; the operation bypass is used to output the input power signal when the voltage output by the main power supply circuit is lower than a preset voltage or when the operation bypass is triggered to enter a conducting state; A battery device, the battery device is arranged in the housing, the battery device is electrically connected to the main power supply circuit; the battery device is used to output power to the main power supply circuit when the input voltage of the main power supply circuit is lower than a preset voltage; A connector is electrically connected to the battery device and is disposed on one side of the housing for connecting to an external battery detection device.

11. The uninterruptible power supply according to claim 10, wherein: The connector includes a positive electrode detection terminal and a negative electrode detection terminal, the battery device includes a positive terminal and a negative terminal, the positive electrode detection terminal is electrically connected to the positive terminal, and the negative electrode detection terminal is connected to the negative terminal.

12. The uninterruptible power supply according to claim 11, wherein: The connector further comprises: A female jack socket, wherein the female jack socket is provided with at least two jacks; The positive pole detection terminal and the negative pole detection terminal are respectively arranged in the two sockets of the female socket seat.

13. The uninterruptible power supply according to claim 10, wherein: The uninterruptible power supply comprises: A protective cover is arranged on the shell, and the protective cover covers the connector.

14. The uninterruptible power supply according to claim 13, wherein: A sealing gasket is provided between the protective cover and the shell, and / or a threaded hole is provided on the protective cover, and the protective cover is fixedly connected to the shell by screws.

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