UPS emergency power supply device

Abstract

The invention provides a UPS emergency power supply device which comprises a first emergency power supply module, a second emergency power supply module, a UPS power supply module, an alternating current load and a direct current load. Wherein the first emergency power supply module is connected in parallel with the UPS power supply module, and is connected with the AC load at the same time; the first emergency power supply module is connected with the UPS power supply module in parallel, the second emergency power supply module is connected with the DC load in parallel, the second emergency power supply module further comprises a shunt terminal, and the shunt terminal is arranged among the fifth switch, the fourth switch and the DC load switch. The UPS power supply system solves the problem that a traditional UPS power supply system cannot stably supply power in a maintenance state, ensures that the current does not flow through the UPS power supply module during emergency power supply through the design of the shunt terminal and the additional branch circuit, and ensures the safety and accuracy of maintenance.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power supply for offshore operations, and particularly to a UPS emergency power supply device. Background Art

[0002] In current industries such as petroleum and petrochemical, power, and communication, UPS systems (uninterruptible power supply systems) are generally used to provide stable and reliable AC power. However, in some special application scenarios, such as offshore oil production platforms, the UPS system not only needs to provide stable AC power but also needs to provide stable and reliable DC power for PCS systems, ESD systems, etc. on the platform.

[0003] There is a problem with traditional UPS systems, that is, they cannot supply power stably during maintenance. Especially when the UPS system needs to be shut down for maintenance, the interruption of DC power may cause the functions of monitoring, safety, and protection devices such as PCS systems and ESD systems to fail, bringing great safety risks to system operation.

[0004] In the present invention, by setting two emergency power supply modules, the problem that traditional UPS power supply systems cannot supply power stably during maintenance is successfully solved. At the same time, the setting of the shunt terminal ensures that the second emergency module can be charged when the UPS power supply module is running, so as to supply power independently during maintenance, realizing the smooth switching and reliable operation of the UPS system.

[0005] The advantages of this invention are that it can be widely applied to scenarios that require simultaneous provision of stable AC and DC power, especially suitable for special environments such as offshore oil production platforms. Through the setting of the experimental steering gear, the UPS system can stably supply power to AC and DC loads in normal working conditions and maintenance conditions, ensuring the continuous operation and safety of the system. Summary of the Invention

[0006] The purpose of this application is to provide a UPS emergency power supply device to solve the above problems.

[0007] The purpose of this application is achieved by the following technical solutions:

[0008] In a first aspect, this application provides a UPS emergency power supply device, including

[0009] a first emergency power supply module, a second emergency power supply module, a UPS power supply module, an AC load, and a DC load; wherein, the first emergency power supply module is connected in parallel with the UPS power supply module and is simultaneously connected to the AC load; the second emergency power supply module is connected in parallel with the UPS power supply module and is simultaneously connected to the DC load, and the second emergency power supply module further includes a shunt terminal, and the shunt terminal is arranged between a fifth switch, a fourth switch, and a DC load switch.

[0010] The beneficial effects of this solution are as follows:

[0011] By introducing the shunt terminal and the additional branch, in the maintenance state, the second emergency power supply module will be completely disconnected from the UPS power supply module, preventing the situation where the second emergency power supply module and the UPS power supply module share a common circuit without introducing the shunt terminal and the additional branch. As a result, although there is no AC power input when the first switch is disconnected, the UPS power supply module is still energized due to the shared circuit, which has a negative impact on the maintenance of the staff. Through the shunt terminal and the additional branch, the technical solution in this application not only provides stable DC power to prevent the equipment at the DC load from being unusable due to power outage during maintenance, but also ensures that the UPS power supply module to be repaired is completely disconnected from the emergency power supply module, preventing harm to the maintenance personnel caused by the current in the UPS power supply module and affecting the maintenance accuracy of the UPS power supply module;

[0012] By introducing the first emergency power supply module and the second emergency power supply module, the present invention provides double backup to ensure that the UPS system can provide stable power supply in various situations. The first emergency power supply module is connected to the AC load, and the second emergency power supply module is connected to the DC load, making the system more comprehensive and reliable. The shunt terminal of the second emergency module is arranged between the fifth switch, the fourth switch and the DC load switch, realizing precise shunting of the DC load. This design enables the second emergency module to supply power independently, ensuring that the DC load can still obtain reliable power support during the maintenance of the UPS. This solution is particularly suitable for scenarios where both AC power and DC power are required, such as offshore oil production platforms, etc. In these environments, the UPS system needs to ensure reliable power supply to both AC loads and DC loads to ensure the continuous operation and safety of the system.

[0013] The first emergency power supply module further includes a ninth switch. The ninth switch is connected in series with the fifth switch group. The fifth switch group is connected to the first static switch. The first static switch is connected to the UPS power supply module through a first node. The fifth switch group is connected in parallel with the first static switch and is connected to the UPS power supply module through a second node.

[0014] The beneficial effects of this solution are as follows: The ninth switch is connected in series with the fifth switch group, forming a series structure that enhances the reliability of power transmission. This series design helps prevent single-point failures and improves the overall reliability of the system. By connecting to the first static switch, the fifth switch group forms an effective switching mechanism that can ensure seamless transition to the UPS power supply module when power switching is required, reducing potential interruptions during system switching. Through the setting of the first node and the second node, the circuit path becomes simple and clear. Such a design helps improve the understandability and maintainability of the circuit, reducing the difficulty of troubleshooting system failures.

[0015] The second emergency power supply module further includes a UPS battery. The UPS battery is directly connected to the fifth switch. A shunt terminal is provided between the fifth switch and the fourth switch. The fourth switch is connected to the UPS power supply module through a third node.

[0016] The beneficial effects of this solution are as follows: Introducing the UPS battery as part of the second emergency power supply module provides a backup power source for DC loads. The use of the UPS battery increases the system's operating time in case of emergencies, ensuring stable power supply for DC loads. The direct connection between the UPS battery and the fifth switch simplifies the battery power supply path, reduces resistance, and improves the efficiency and stability of the battery output. This helps ensure that the UPS battery can quickly and reliably supply power to the system. A shunt terminal is provided between the fifth switch and the fourth switch. Through this design, the second emergency power supply module can independently supply power to the DC load. The setting of this shunt terminal helps maintain stable power supply for the DC load during the maintenance state of the UPS. The fourth switch is connected to the UPS power supply module through the third node, forming an effective power switching mechanism that ensures seamless transition to the UPS power supply module during switching, reducing potential interruptions during system switching.

[0017] The UPS power supply module includes a first isolation transformer, a first rectifier, a first inverter, a second isolation transformer, a second static switch, a first node, a second node, a first switch group, and an AC load connected in series in sequence.

[0018] A second switch group is provided between the third node and the DC load.

[0019] The beneficial effects of this solution are as follows: A second switch group is provided between the third node and the DC load, providing independent management and control for the DC load. This setting enables the UPS system to more flexibly handle different types of load requirements.

[0020] The second switch group includes a second main switch and a second sub-switch. The second sub-switch is directly connected to the DC load.

[0021] The beneficial effects of this solution are as follows: Through the direct connection of the second auxiliary switch, efficient management of the DC load is achieved. This design helps to flexibly control the DC load to meet the requirements under different working conditions; By directly connecting the second auxiliary switch to the DC load, a direct connection and shunt design is formed, which helps to simplify the circuit path, reduce resistance, improve the power transfer efficiency, and reduce the system energy loss.

[0022] The first switch group includes a first main switch and a first auxiliary switch, and the first auxiliary switch is directly connected to the AC load.

[0023] The beneficial effects of this solution are as follows: Through the direct connection of the first auxiliary switch, efficient management of the AC load is achieved. This design helps to flexibly control the AC load to meet the requirements under different working conditions; By directly connecting the first auxiliary switch to the AC load, a direct connection and shunt design is formed, which helps to simplify the circuit path, reduce resistance, improve the power transfer efficiency, and reduce the system energy loss.

[0024] In the normal working state, the first switch, the first main switch, and the second main switch in the UPS power supply module are turned on, and the UPS power supply module provides direct current and alternating current for the DC load and the AC load respectively at the same time.

[0025] The beneficial effects of this solution are as follows: In the normal working state, the first switch, the first main switch, and the second main switch in the UPS power supply module are all turned on, which enables the UPS system to provide power for the DC load and the AC load at the same time, realizing parallel power supply. This design ensures the comprehensive and stable operation of the system in the normal working state. By providing direct current and alternating current at the same time, the UPS power supply module realizes efficient power supply for multiple types of loads. This high flexibility helps to meet the power requirements of different devices and systems, improves the energy utilization rate. By providing power for the DC load and the AC load, this solution ensures the comprehensive power supply of different types of loads in the system, which is particularly important for application scenarios that need to meet the requirements of both AC and DC loads at the same time, such as offshore oil production platforms, etc.

[0026] In the maintenance state of the UPS power supply module, the first switch is turned off, the fifth switch and the ninth switch are turned on, the first emergency power supply module provides alternating current for the AC load, and the second emergency power supply module provides direct current for the DC load.

[0027] The beneficial effects of this solution are as follows: In the maintenance state of the UPS power supply module, by disconnecting the first switch, conducting the fifth switch, and conducting the ninth switch, seamless switching of the UPS system is achieved, which ensures that the system can smoothly switch to the backup power supply during maintenance, preventing problems caused by interruptions and power instability. This shunt design enables the system to flexibly manage different types of loads in the maintenance state, ensuring stable power supply for AC loads and DC loads; By conducting the fifth switch and the ninth switch, the availability in the maintenance state of the UPS power supply module is ensured. Even in the maintenance state, the system can still provide stable power for different types of loads, guaranteeing the reliable operation of the system; The first emergency power supply module and the second emergency power supply module respectively provide power for AC loads and DC loads, ensuring that these two modules can operate independently in the maintenance state, reducing the risk of single-point failures in the system.

[0028] The local circuit formed by the fifth switch group, the first static switch, the first node, and the second node forms an experimental steering gear.

[0029] Through the reasonable combination of components such as the fifth switch, the fourth switch, the DC load switch, and the first static switch, this solution forms an experimental steering gear. The setting of this experimental steering gear enables the system to effectively switch under different working states, thus achieving reasonable power supply for different loads.

[0030] Both the first secondary switch and the second secondary switch are switches directly connected to at least one of the AC load or the DC load.

[0031] The beneficial effects of this solution are as follows: The direct connection of the first secondary switch and the second secondary switch makes the power supply control for AC loads and DC loads more flexible. Each switch can independently provide power for the corresponding load, meeting the requirements under different working states. At the same time, when a fault occurs in the system or maintenance is required, through independent power supply control, one of the loads can be selectively turned off or isolated without affecting the normal operation of the other load. This simplifies the fault isolation and maintenance process and improves the maintainability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0033] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or in the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0034] Figure 1 Schematically shown is a structural schematic diagram of a circuit according to an embodiment of the present disclosure;

[0035] Figure 2 Schematically shown is a schematic diagram of the normal power supply state of the UPS power supply module according to an embodiment of the present disclosure;

[0036] Figure 3 Schematically shown is a schematic diagram of the first emergency power supply module and the second emergency power supply module respectively supplying power to the AC load and the DC load in the maintenance state of the UPS power supply module according to an embodiment of the present disclosure. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are some but not all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0038] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article, or device. Without further limitation, an element defined by the phrase "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device including the element.

[0039] First, introduce the relevant content in the field involved in this embodiment:

[0040] An Experimental Bypass Switch refers to a circuit component or switch system in a system, whose function is to direct the current flow to an alternate path under specific operating conditions to achieve the switching or diversion between different operating states of the system. This Experimental Bypass Switch is usually used in the emergency power supply device of a UPS (Uninterruptible Power Supply) to ensure stable power supply in the system maintenance or repair state.

[0041] UPS, the UPS (Uninterruptible Power Supply) power supply system is a kind of electrical equipment designed to provide stable and reliable power supply for loads to cope with power outages or power fluctuations. These systems are usually used for critical electrical equipment and sensitive electronic devices to ensure that the load can continue to be powered when there is a power grid failure or power problem. Generally, a UPS consists of the following parts: the input power supply, which is usually connected to the main power grid, and the UPS system provides power through the power grid. The input power supply should have a certain voltage range to adapt to different power grid conditions; the static switch and filter, the static switch is used to switch the input power supply of the UPS system, usually from the main power grid to the battery or other backup power supply of the UPS, and the filter is used to remove the noise and interference in the power supply to ensure that the power supplied to the load is clean; the backup power supply, the UPS system usually includes a set of storage batteries to provide power when the main power supply fails. The storage batteries are responsible for storing electrical energy to provide backup power when needed; the inverter, the inverter is used to convert the direct current provided by the battery into the alternating current required by the load, and it is responsible for maintaining the normal operation of the load when powered by the battery; the voltage regulator and the scheduling system, the voltage regulator is used to ensure a stable voltage is provided to the load, regardless of the fluctuations of the main power grid, and the scheduling system is used to monitor the status of the UPS system and perform switching and adjustment operations as needed; the output power supply, which is the power supply output from the UPS system and supplied to the connected load devices. However, the conventional UPS power supply system does not include a direct current power supply system, that is, the conventional UPS power supply system cannot supply power to direct current loads. At the same time, the conventional UPS is designed to continuously provide alternating current in the event of a power outage, but its function does not include creating a non-powered environment for the maintenance of the UPS power supply system itself after an active power outage. Due to the existence of the backup power supply, the UPS power supply system is still powered internally in the event of an accidental power outage. Moreover, the conventional UPS power supply system does not include the function of charging the storage batteries. The conventional UPS power supply system mainly relies on the backup power supply for emergency handling, and its backup power supply needs to be connected to the power grid for charging.

[0042] Inverter and rectifier, Inverter, the inverter is mainly used to convert direct current into alternating current, Rectifier, the rectifier is mainly used to convert alternating current into direct current.

[0043] Figure 1 Schematically shows a schematic diagram of the structure of a circuit according to an embodiment of the present disclosure.

[0044] Referring to Figure 1 as shown, the circuit provided by the embodiment of the present disclosure includes: a first emergency power supply module, a second emergency power supply module, a UPS power supply module, an AC load and a DC load;

[0045] Among them, the first emergency power supply module is connected in parallel with the UPS power supply module and is simultaneously connected to the AC load; the second emergency power supply module is connected in parallel with the UPS power supply module and is simultaneously connected to the DC load. The second emergency module further includes a shunt terminal F001, which is arranged among the fifth switch Q005, the fourth switch Q004, and the DC load switch Q206.

[0046] The first emergency power supply module further includes a ninth switch Q090. The ninth switch Q090 is connected in series with the fifth switch group Q050. The fifth switch group Q050 is connected to the first static switch A035. The first static switch is connected to the UPS power supply module through the first node J001. The fifth switch group Q050 is connected in parallel with the first static switch A035 and is connected to the UPS power supply module through the second node J002.

[0047] The second emergency power supply module further includes a UPS battery. The UPS battery is directly connected to the fifth switch Q005. A shunt terminal F001 is provided between the fifth switch Q005 and the fourth switch Q004. The fourth switch Q004 is connected to the UPS power supply module through the third node J003.

[0048] The UPS power supply module includes a first isolation transformer T001, a first rectifier A030, a first inverter A032, a second isolation transformer T002, a second static switch A034, a first node J001, a second node J002, a first switch group, and an AC load, which are connected in series in sequence.

[0049] A second switch group is provided between the third node J003 and the DC load.

[0050] The second switch group includes a second main switch Q200, second sub-switches Q201, Q202... Q206. The second sub-switches Q201, Q202... Q206 are directly connected to the DC load.

[0051] The first switch group includes a first main switch Q100 and first sub-switches Q101, Q102... Q124. The first sub-switches are directly connected to the AC load.

[0052] Refer to Figure 2 shown Figure 2 Exemplarily, the circuit state of the emergency power supply device according to the present invention under the normal working state of the UPS power supply module is shown.

[0053] Under the normal working state, the first switch Q001, the first main switch Q100, and the second main switch Q200 in the UPS power supply module are turned on. The UPS power supply module simultaneously provides direct current and alternating current for the DC load and the AC load respectively.

[0054] The first sub-switch group Q201 - Q206: is directly connected to the AC load and conducts or partially conducts. Whether each sub-switch in the first sub-switch group Q201 - Q206 conducts depends on the load requirements of the load it is connected to; the second sub-switch group Q101 - Q124: is directly connected to the DC load and conducts or partially conducts. Whether each sub-switch in the group conducts depends on the load requirements of the load it is connected to; the fifth switch Q005: is open or closed, the fourth switch Q004: is open or closed. When the UPS battery needs to be charged, the above two switches conduct. When the UPS battery does not need to be charged, the above two switches are open; the ninth switch Q090: is open, and the standby AC power supply does not participate in the power supply under normal operating conditions.

[0055] Current enters the UPS power supply module through the first switch Q001 in the conducting state, passes through the first isolation transformer T001 and enters the first rectifier A030, where the alternating current is converted into direct current. Through the second main switch Q200, it is shunted by the second sub-switch group Q201 - Q206 to supply direct current to the devices in the DC load.

[0056] On the other hand, the current flows through the first rectifier A030 and is converted into direct current, enters the first inverter A032 and is converted into alternating current. Through the second isolation transformer, through the second static switch A034, through the first main switch Q100, it is shunted by the first sub-switch group Q101 - Q124 to each AC electrical appliance to complete the functions of the entire system.

[0057] In the normal working state, the first switch Q001, the first main switch Q100, and the second main switch Q200 conduct, enabling the UPS power supply module to supply power to both the DC load and the AC load simultaneously. This two-way power supply ensures the comprehensive operation of the system. The first sub-switch group Q101 - Q124 is directly connected to the AC load, while the second sub-switch group Q201 - Q206 is directly connected to the DC load. The conduction states of each switch group can be adjusted according to the load requirements of the connected loads to achieve shunt power supply to the loads. This design makes the system more flexible and can meet the needs of different loads. The conduction states of the fourth switch Q004 and the fifth switch Q005 change according to whether the UPS battery needs to be charged. When the UPS battery needs to be charged, these two switches conduct, allowing current to flow into the battery for charging; conversely, when the UPS battery does not need to be charged, these two switches are open to prevent unnecessary charging operations. The ninth switch Q090 is open, and the standby AC power supply does not participate in the power supply under normal operating conditions. This management strategy ensures that the standby power supply does not intervene under normal working conditions and will only be activated when necessary, improving the stability and reliability of the system.

[0058] As Figure 3 shown, Figure 3 Exemplarily, the circuit of the device according to the present invention in the maintenance state is given.

[0059] In the maintenance state of the UPS power supply module, the first switch Q001 is disconnected, the fifth switch Q005 and the ninth switch Q090 are turned on, the first emergency power supply module provides alternating current for the AC load, and the second emergency power supply module provides direct current for the DC load.

[0060] The fourth switch Q004 is disconnected, and the second main switch Q200 is disconnected. Thus, the entire UPS power supply module is completely isolated. The normal AC input, the first emergency power supply module, and the second emergency power supply module are all disconnected from the UPS power supply module, ensuring that the UPS power supply module is de-energized in the maintenance state, and the DC load and the AC load are not de-energized. Due to the designed connection path from the fifth switch Q005 to the shunt terminal F001 to the second sub-switch group Q206, and at the same time, both the fourth switch Q004 and the second main switch Q200 are disconnected, the DC load powered by the UPS battery is not de-energized and the current no longer flows through the UPS power supply module, greatly improving the safety of the UPS power supply module in the maintenance and inspection states, ensuring the personal safety of the maintenance operator. At the same time, since there is no current input to the UPS power supply module, the maintenance efficiency and maintenance accuracy of the UPS power supply module are also improved.

[0061] A local circuit composed of the fifth switch group Q050, the first static switch A035, the first node J001, and the second node J002 forms an experimental steering gear. The alternating current enters the experimental steering gear via the ninth switch Q090 and is shunted into the AC electrical appliances via the first main switch Q100 and the first sub-switches Q101 - Q124.

[0062] The first sub-switches Q101, Q102... Q124 and the second sub-switches Q201, Q202... Q206 are all switches directly connected to at least one AC load or DC load.

[0063] At the same time, the second static switch A034 is disconnected, then the UPS power supply module is also isolated at the first emergency power supply unit, ensuring the maintenance efficiency and maintenance safety.

[0064] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the technical concept of the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A UPS emergency power supply device, characterized in that, including a first emergency power supply module, a second emergency power supply module, a UPS power supply module, an AC load, and a DC load; wherein, the first emergency power supply module is connected in parallel with the UPS power supply module and is simultaneously connected to the AC load; the second emergency power supply module is connected in parallel with the UPS power supply module and is simultaneously connected to the DC load. The second emergency power supply module further includes a shunt terminal (F001) disposed between a fifth switch (Q005), a fourth switch (Q004), and a DC load switch (Q206).

2. The UPS emergency power supply device according to claim 1, characterized in that, The first emergency power supply module further includes a ninth switch (Q090). The ninth switch (Q090) is connected in series with a fifth switch group (Q050). The fifth switch group (Q050) is connected to a first static switch (A035). The first static switch is connected to the UPS power supply module through a first node (J001). The fifth switch group (Q050) is connected in parallel with the first static switch (A035) and is connected to the UPS power supply module through a second node (J002).

3. The UPS emergency power supply device according to claim 1, characterized in that, The second emergency power supply module further includes a UPS battery. The UPS battery is directly connected to the fifth switch (Q005). A shunt terminal (F001) is provided between the fifth switch (Q005) and the fourth switch (Q004). The fourth switch (Q004) is connected to the UPS power supply module through a third node (J003).

4. The UPS emergency power supply device according to claim 3, characterized in that, The UPS power supply module includes a first isolation transformer (T001), a first rectifier (A030), a first inverter (A032), a second isolation transformer (T002), a second static switch (A034), a first node (J001), a second node (J002), a first switch group, and an AC load, which are connected in series in sequence; A second switch group is provided between the third node (J003) and the DC load.

5. The UPS emergency power supply device according to claim 4, characterized in that, The second switch group includes a second main switch (Q200) and second sub-switches (Q201, Q202... Q206). The second sub-switches (Q201, Q202... Q206) are directly connected to the DC load.

6. The UPS emergency power supply device according to claim 4, characterized in that, The first switch group includes a first main switch (Q100) and first sub-switches (Q101, Q102... Q124). The first sub-switches are directly connected to the AC load.

7. The UPS emergency power supply device according to claim 2, characterized in that, The UPS power supply module further includes a first switch (Q001); In the normal working state, the first switch (Q001), the first main switch (Q100), and the second main switch (Q200) in the UPS power supply module are turned on, and the UPS power supply module provides direct current and alternating current for the DC load and the AC load respectively at the same time.

8. The UPS emergency power supply device according to claim 7, characterized in that, In the maintenance state of the UPS power supply module, the first switch (Q001) is turned off, the fifth switch (Q005) and the ninth switch (Q090) are turned on. The first emergency power supply module provides alternating current for the AC load, and the second emergency power supply module provides direct current for the DC load.

9. The UPS emergency power supply device according to claim 8, characterized in that, The local circuit formed by the fifth switch group (Q050), the first static switch (A035), the first node (J001) and the second node (J002) forms an experimental steering gear.

10. The UPS emergency power supply device according to claim 1, characterized in that, The first sub-switches (Q101, Q102... Q124) and the second sub-switches (Q201, Q202... Q206) are both switches with at least one directly connected to the AC load or the DC load.

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