A fast-switching UPS device

Abstract

This utility model discloses a fast-switching UPS device, including an input module, an energy storage module, a relay switching module, a drive module, and a control module. The relay switching module includes a relay coil and a switching switch. The output terminal of the input module is connected to the first input terminal of the switching switch and the energy storage module, respectively. The second input terminal of the switching switch is connected to the energy storage module. The output terminal of the switching switch is used to connect to the load. In a first position state, the first input terminal and the output terminal of the switching switch are connected. In a second position state, the second input terminal and the output terminal of the switching switch are connected. The output terminal of the drive module is connected to the relay coil. The drive module can output drive power at least a first voltage and a second voltage. The control module is connected to the drive module. The control module can control the drive module to output drive power of different voltages or stop outputting drive power. This design shortens the power outage time and ensures stable operation.

Description

Technical Field

[0001] This utility model relates to the field of uninterruptible power supply technology, and in particular to a UPS device with fast switching capability. Background Technology

[0002] UPS units typically include an energy storage module containing the UPS power supply and a relay switching module. When the mains power is normal, the mains power supplies the load through the relay switching module and also charges the energy storage module. When the mains power fails, the control module receives a fault signal or issues a control command to control the relay switching module to switch its conduction state, cutting off the mains power supply, and the energy storage module supplies power to the load. However, the relay switching module switches its conduction state by having a relay coil engage a relay switch. To reduce power loss and prevent damage to the relay coil under high voltage, the control module only applies a supply voltage to the relay coil that is just enough to stably engage the relay switch. However, the engagement time is relatively slow, so users can clearly feel that the power supply to the load is disconnected. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a fast-switching UPS device to shorten power outage time and ensure stable operation of the relay coil.

[0004] A fast-switching UPS device according to a first aspect embodiment of the present invention includes: an input module, the input terminal of which is connected to mains power; an energy storage module for storing electrical energy; and a relay switching module including a relay coil and a switching switch, the switching switch including a first input terminal, a second input terminal, and an output terminal, the output terminal of the input module being connected to the first input terminal of the switching switch and the energy storage module respectively, the second input terminal of the switching switch being connected to the energy storage module, and the output terminal of the switching switch being connected to a load. The switching switch is capable of switching between at least a first position state and a second position state. In the first position state, the first input terminal and the output terminal of the switching switch are connected... When the switch is in the first position, the second input terminal and the output terminal are disconnected. When the switch is in the second position, the first input terminal and the output terminal are disconnected, and the second input terminal and the output terminal are connected. When the relay coil is energized, the switch can be switched to the second position. When the relay coil is de-energized, the switch can be switched to the first position. The drive module has its output terminal connected to the relay coil. The drive module can output at least a first voltage and a second voltage, wherein the second voltage is greater than the first voltage. The control module is connected to the drive module. The control module can control the drive module to output different voltages of drive power or stop outputting drive power.

[0005] A fast-switching UPS device according to an embodiment of the present invention has at least the following beneficial effects:

[0006] This utility model relates to a fast-switching UPS device. When the mains power supply is normal, the control module controls the drive module to stop outputting drive power to the relay coil, and the switch switches to the first position. The mains power supplies the load and charges the energy storage module. When the mains power supply fails, the control module first controls the drive module to output a second voltage drive power to the relay coil. When the second voltage is applied to the relay coil, the drive current is larger, which can generate a larger magnetic force to drive the switch to close more quickly. The switch switches to the second position, and the energy storage module supplies power to the load. Then, the control module controls the drive module to output a first voltage drive power to the relay coil. When the first voltage is applied to the relay coil, the drive current is reduced, but it can still generate a magnetic force to drive the switch to close, and it is less likely to damage the relay coil. This design shortens the power outage time and ensures the stable operation of the relay coil.

[0007] According to some embodiments of the present invention, the fast-switching UPS device further includes a power supply detection module, which is connected to the input module to detect the mains power supply signal. The mains power supply signal is used to characterize whether the mains power is faulty. The control module is connected to the power supply detection module to control the drive module to output drive power of different voltages or stop outputting drive power according to the mains power supply signal.

[0008] According to some embodiments of the present invention, the fast-switching UPS device further includes a timing module, which provides a timing signal, and the control module is connected to the timing module to control the drive module to switch from a drive power supply that outputs a second voltage to a drive power supply that outputs a first voltage according to the timing signal.

[0009] According to some embodiments of this utility model, the driving module includes a first input terminal and a second input terminal. The first input terminal is used to connect to a first power supply, and the second input terminal is used to connect to a second power supply. The first power supply is a power supply that outputs a first voltage, and the second power supply is a power supply that outputs a second voltage. The control module can control the driving module to switch between at least a first operating state and a second operating state. In the first operating state, the first input terminal of the driving module is closed to the output terminal of the driving module, and the second input terminal of the driving module is open to the output terminal of the driving module. In the second operating state, the first input terminal of the driving module is open to the output terminal of the driving module, and the second input terminal of the driving module is connected to the second power supply. The output terminal of the block is closed; or, the first power supply is a power supply that outputs a first voltage, and the second power supply is a power supply that outputs a third voltage. The control module can control the drive module to switch between at least a first working state and a second working state. In the first working state, the first input terminal of the drive module is closed to the output terminal of the drive module, and the second input terminal of the drive module is disconnected from the output terminal of the drive module. In the second working state, both the first input terminal and the second output terminal of the drive module are closed to the output terminal of the drive module. The first input terminal and the second output terminal of the drive module are connected in parallel to output so that the power supply of the first voltage and the power supply of the third voltage are superimposed to form the power supply of the second voltage.

[0010] According to some embodiments of this utility model, the driving module includes a diode D1, semiconductor switching transistors Q1, Q2, and Q3, resistors R1, R2, and R3. The anode of the diode D1 is connected to a first power supply, and the input terminal of the switching transistor Q1 is connected to a second power supply. The first power supply is a power supply that outputs a first voltage, and the second power supply is a power supply that outputs a third voltage. The output terminal of the switching transistor Q1 is connected to the cathode of the diode D1 and the relay coil, respectively. The relay coil is connected to the input terminal of the switch Q3, the input terminal of the switch Q2 is connected to the controlled terminal of the switch Q1, the output terminal of the switch Q2 is connected to the first end of the resistor R1, the tail end of the resistor R1 and the output terminal of the switch Q3 are both grounded, the first end of the resistor R2 is connected to the controlled terminal of the switch Q2, the first end of the resistor R3 is connected to the controlled terminal of the switch Q3, and the control module is connected to the tail ends of the resistor R2 and the resistor R3 respectively.

[0011] According to some embodiments of the present invention, the fast-switching UPS device further includes an AC voltage regulator module. The output terminal of the input module is connected to the input terminal of the AC voltage regulator module, and the output terminal of the AC voltage regulator module is connected to the first input terminal of the switching switch to realize the connection between the output terminal of the input module and the first input terminal of the switching switch.

[0012] According to some embodiments of the present invention, the fast-switching UPS device further includes a rectifier and voltage regulator module, the output terminal of the input module is connected to the input terminal of the rectifier and voltage regulator module, and the output terminal of the rectifier and voltage regulator module is connected to the energy storage module to realize the connection between the output terminal of the input module and the energy storage module.

[0013] According to some embodiments of the present invention, the fast-switching UPS device further includes an inverter module, the energy storage module is connected to the input terminal of the inverter module, and the output terminal of the inverter module is connected to the second input terminal of the switching switch to realize the connection between the second input terminal of the switching switch and the energy storage module.

[0014] According to some embodiments of the present invention, the input module includes a start switch S1, the first end of which is used to connect to the mains power, and the tail end of which is connected to the first input terminal of the switching switch and the energy storage module respectively.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of one embodiment of the UPS device for rapid switching according to the present invention.

[0018] Figure 2 This is a circuit diagram of the drive module of one embodiment of the UPS device with fast switching according to the present invention;

[0019] Figure 3 This is an output waveform diagram of the drive module of one embodiment of the UPS device with fast switching according to this utility model.

[0020] Figure label:

[0021] Input module 100; Energy storage module 200; Relay switching module 300; Switching switch 310; Relay coil 320; Drive module 400; Control module 500; AC voltage regulator module 600; Rectifier voltage regulator module 700; Inverter module 800. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figures 1 to 3As shown, a fast-switching UPS device according to a first aspect embodiment of the present invention includes an input module 100, an energy storage module 200, a relay switching module 300, a drive module 400, and a control module 500. The input terminal of the input module 100 is connected to the mains power supply. The energy storage module 200 is used to store electrical energy. The relay switching module 300 includes a relay coil 320 and a switching switch 310. The switching switch 310 includes a first input terminal, a second input terminal, and an output terminal. The output terminal of the input module 100 is connected to the first input terminal of the switching switch 310 and the energy storage module 200, respectively. The second input terminal of the switching switch 310 is connected to the energy storage module 200. The output terminal of the switching switch 310 is used to connect to the load. The switching switch 310 is capable of switching between at least a first position state and a second position state. In the first position state, the switching switch 310... The first input terminal of the switch 310 is connected to the output terminal of the switch 310, and the second input terminal of the switch 310 is disconnected from the output terminal of the switch 310. In the second position state, the first input terminal of the switch 310 is disconnected from the output terminal of the switch 310, and the second input terminal of the switch 310 is connected to the output terminal of the switch 310. When the relay coil 320 is energized, the switch 310 can be switched to the second position state. When the relay coil 320 is de-energized, the switch 310 can be switched to the first position state. The output terminal of the drive module 400 is connected to the relay coil 320. The drive module 400 can output drive power supplies with at least a first voltage and a second voltage, wherein the second voltage is greater than the first voltage. The control module 500 is connected to the drive module 400. The control module 500 can control the drive module 400 to output drive power supplies with different voltages or stop outputting drive power supplies.

[0027] The control module 500 can be an MCU or CPU and its associated circuits, and the energy storage module 200 can be a conventional UPS battery. In some embodiments of this utility model, the input module 100 includes a start switch S1. The first end of the start switch S1 is used to connect to the mains power, and the tail end of the start switch S1 is connected to the first input end of the switch 310 and the energy storage module 200 respectively. When the start switch S1 is closed, the UPS device is connected between the mains power and the load.

[0028] The magnitude of the second voltage can be 2 or 3 times the magnitude of the first voltage. Taking a standard relay coil 320 as an example, the first voltage is N. The table below shows the relationship between the driving power supply, pull-in time, and release time of the relay coil 320:

[0029]

[0030] This utility model relates to a fast-switching UPS device. When the mains power supply is normal, the control module 500 controls the drive module 400 to stop outputting drive power to the relay coil 320, and the switch 310 switches to the first position. The mains power supplies the load and charges the energy storage module 200. When the mains power supply fails, the control module 500 first controls the drive module 400 to output a second voltage drive power to the relay coil 320. When the second voltage is applied to the relay coil 320, the drive current is larger, which can generate a larger magnetic force to drive the switch 310 to close at a faster speed. The switch 310 switches to the second position, and the energy storage module 200 supplies power to the load. Then, the control module 500 controls the drive module 400 to output a first voltage drive power to the relay coil 320. When the first voltage is applied to the relay coil 320, the drive current is reduced, but it can still generate a magnetic force to drive the switch 310 to close, and it is not easy to damage the relay coil 320. This design shortens the power outage time and ensures the stable operation of the relay coil 320.

[0031] In some embodiments of this utility model, the fast-switching UPS device further includes a power supply detection module, which is connected to the input module 100 to detect the mains power supply signal. The mains power supply signal is used to characterize whether the mains power is faulty. The control module 500 is connected to the power supply detection module to control the drive module 400 to output drive power of different voltages or stop outputting drive power according to the mains power supply signal.

[0032] The power supply detection module can be a voltage detection circuit or a current detection circuit composed of a conventional sampling resistor and a resistive voltage divider circuit. It is connected to the mains power to sample the mains voltage or current. When the mains voltage or current is too high or too low, it can be determined that there is a mains power fault. The control module 500 can control the drive module 400 to output different voltage drive power or stop outputting drive power according to the mains power supply signal.

[0033] In some embodiments of this utility model, the fast-switching UPS device further includes a timing module, which provides a timing signal. The control module 500 is connected to the timing module to control the drive module 400 to switch from a drive power supply that outputs a second voltage to a drive power supply that outputs a first voltage according to the timing signal.

[0034] The timing module can be a crystal oscillator circuit or a timing program within the control module 500. When the mains power supply signal indicates a mains power failure, the control module 500 immediately controls the drive module 400 to output a second voltage drive power supply. At this time, timing begins and a timing signal is formed. After the timing signal passes the time threshold, the control module 500 controls the drive module 400 to output a first voltage drive power supply. Specifically, the time threshold can be set by the operator according to the actual situation of the product. For example, the time threshold can be 0.1s, 1s, 2s, 5s, etc.

[0035] In some embodiments of this utility model, the operator can also directly set a fixed number of pulses in the control module 500. When the mains power supply signal indicates a mains power failure, the control module 500 triggers the drive module 400 to output a second voltage drive power supply based on the fixed number of pulses. After the fixed number of pulses is triggered, the control module 500 then controls the drive module 400 to output a first voltage drive power supply.

[0036] In some embodiments of this utility model, the drive module 400 includes a first input terminal and a second input terminal, wherein the first input terminal is used to connect to a first power supply and the second input terminal is used to connect to a second power supply.

[0037] Wherein, the first power supply is a power supply that outputs a first voltage, and the second power supply is a power supply that outputs a second voltage. The control module 500 can control the drive module 400 to switch between at least a first working state and a second working state. In the first working state, the first input terminal of the drive module 400 is closed to the output terminal of the drive module 400, and the second input terminal of the drive module 400 is open to the output terminal of the drive module 400. In the second working state, the first input terminal of the drive module 400 is open to the output terminal of the drive module 400, and the second input terminal of the drive module 400 is closed to the output terminal of the drive module 400.

[0038] The drive module 400 can be a single-pole multi-contact switch. In the first working state, the knife switch connects the first input terminal of the drive module 400 with the output terminal of the drive module 400, and the first voltage drive power supply powers the relay coil 320. In the second working state, the knife switch connects the second input terminal of the drive module 400 with the output terminal of the drive module 400, and the second voltage drive power supply powers the relay coil 320.

[0039] Or, such as Figure 2 , 3As shown, the first power supply is a power supply that outputs a first voltage, and the second power supply is a power supply that outputs a third voltage. The control module 500 can control the drive module 400 to switch between at least a first operating state and a second operating state. In the first operating state, the first input terminal of the drive module 400 is closed to the output terminal of the drive module 400, and the second input terminal of the drive module 400 is disconnected from the output terminal of the drive module 400. In the second operating state, both the first input terminal and the second output terminal of the drive module 400 are closed to the output terminal of the drive module 400. The first input terminal and the second output terminal of the drive module 400 are connected in parallel to output power so that the power supply of the first voltage and the power supply of the third voltage are superimposed to form the power supply of the second voltage.

[0040] In the first operating state, the first input terminal of the drive module 400 is connected to the output terminal of the drive module 400, and the first voltage drive power supply supplies power to the relay coil 320. In the second operating state, both the first input terminal and the second output terminal of the drive module 400 are connected to the output terminal of the drive module 400. In terms of connection structure, the first input terminal and the second output terminal of the drive module 400 are connected in parallel. Then, the drive power supply output by the output terminal of the drive module 400 is the superposition of the first voltage and the third voltage, thereby forming the second voltage drive power supply.

[0041] Specifically, such as Figure 2 , Figure 3 As shown, the driving module 400 includes a diode D1, semiconductor switching transistors Q1, Q2, and Q3, resistors R1, R2, and R3. The anode of diode D1 is connected to a first power supply, and the input terminal of switching transistor Q1 is connected to a second power supply. The first power supply is a power supply V1 that outputs a first voltage, and the second power supply is a power supply V2 that outputs a third voltage. The output terminal of switching transistor Q1 is connected to the cathode of diode D1 and the beginning of relay coil 320. The tail end of the relay coil 320 is connected to the input terminal of the switch Q3, the input terminal of the switch Q2 is connected to the controlled terminal of the switch Q1, the output terminal of the switch Q2 is connected to the beginning terminal of the resistor R1, the tail end of the resistor R1 and the output terminal of the switch Q3 are both grounded, the beginning terminal of the resistor R2 is connected to the controlled terminal of the switch Q2, the beginning terminal of the resistor R3 is connected to the controlled terminal of the switch Q3, and the control module 500 is connected to the tail ends of the resistor R2 and the resistor R3 respectively.

[0042] Switching transistors Q1, Q2, and Q3 can all be transistors, MOSFETs, or thyristors, etc.

[0043] The control module 500 is equipped with a Pin1 port and a Pin2 port. The Pin1 port is connected to the end of the resistor R2, and the Pin2 port is connected to the end of the resistor R3. In the event of a mains power failure, the control module 500 outputs a high level through both the Pin1 port and the Pin2 port. The power supply of the first voltage and the power supply of the third voltage are superimposed to obtain the power supply of the second voltage. After the switch 310 is activated, the Pin1 port stops outputting a high level, the power supply of the second voltage is disconnected, and the power supply of the first voltage continues to supply power.

[0044] In some embodiments of this utility model, such as Figure 1 As shown, the fast-switching UPS device also includes an AC voltage regulator module 600. The output terminal of the input module 100 is connected to the input terminal of the AC voltage regulator module 600, and the output terminal of the AC voltage regulator module 600 is connected to the first input terminal of the switching switch 310 to realize the connection between the output terminal of the input module 100 and the first input terminal of the switching switch 310.

[0045] The AC voltage regulator module 600 may include an output voltage sampling unit, a control unit, and a switching unit. The input terminal of the switching unit is connected to the output terminal of the input module 100 and the first input terminal of the switch 310, respectively. The tail terminal of the switching unit is grounded. The output voltage sampling unit can sample the output voltage. The control unit may include an MCU or CPU and its auxiliary circuits. The control unit adjusts the on / off threshold of the switching unit according to the magnitude of the output voltage, thereby stabilizing the output voltage.

[0046] In some embodiments of this utility model, such as Figure 1 As shown, the fast-switching UPS device also includes a rectifier and voltage regulator module 700. The output terminal of the input module 100 is connected to the input terminal of the rectifier and voltage regulator module 700, and the output terminal of the rectifier and voltage regulator module 700 is connected to the energy storage module 200 to realize the connection between the output terminal of the input module 100 and the energy storage module 200.

[0047] The rectifier and voltage regulator module 700 may include a rectifier unit consisting of a full-wave or half-wave rectifier bridge and a voltage regulator unit consisting of a filter capacitor. When the start switch S1 is closed, the mains power charges the energy storage module 200 after passing through the rectifier unit and the voltage regulator unit.

[0048] In some embodiments of this utility model, the fast-switching UPS device further includes an inverter module 800, the energy storage module 200 is connected to the input terminal of the inverter module 800, and the output terminal of the inverter module 800 is connected to the second input terminal of the switching switch 310 to realize the connection between the second input terminal of the switching switch 310 and the energy storage module 200.

[0049] The inverter module 800 may include an H-bridge inverter circuit composed of multiple semiconductor switching transistors. The inverter module 800 inverts the DC power output from the energy storage module 200 into AC power and outputs it.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fast-switching UPS device, characterized in that, include: The input module has an input terminal for connecting to mains power. Energy storage modules are used to store electrical energy; A relay switching module includes a relay coil and a switching switch. The switching switch includes a first input terminal, a second input terminal, and an output terminal. The output terminal of the input module is connected to the first input terminal of the switching switch and an energy storage module, respectively. The second input terminal of the switching switch is connected to the energy storage module. The output terminal of the switching switch is used to connect to a load. The switching switch can switch between at least a first position state and a second position state. In the first position state, the first input terminal and the output terminal of the switching switch are connected, and the second input terminal and the output terminal of the switching switch are disconnected. In the second position state, the first input terminal and the output terminal of the switching switch are disconnected, and the second input terminal and the output terminal of the switching switch are connected. When the relay coil is energized, the switching switch can be switched to the second position state. When the relay coil is de-energized, the switching switch can be switched to the first position state. The drive module has its output terminal connected to a relay coil. The drive module is capable of outputting a drive power supply with at least a first voltage and a second voltage, wherein the second voltage is greater than the first voltage. The control module is connected to the drive module. The control module can control the drive module to output different voltage drive power supplies or stop outputting drive power supplies.

2. The UPS device for rapid switching according to claim 1, characterized in that, It also includes a power supply detection module, which is connected to the input module to detect the mains power supply signal. The mains power supply signal is used to characterize whether the mains power is faulty. The control module is connected to the power supply detection module to control the drive module to output different voltage drive power supplies or stop outputting drive power supplies according to the mains power supply signal.

3. The UPS device for rapid switching according to claim 1, characterized in that, It also includes a timing module for providing timing signals, and a control module connected to the timing module to control the drive module to switch from a drive power supply that outputs a second voltage to a drive power supply that outputs a first voltage according to the timing signals.

4. The UPS device for rapid switching according to claim 1, characterized in that, The drive module includes a first input terminal and a second input terminal, wherein the first input terminal is used to connect to a first power supply and the second input terminal is used to connect to a second power supply. Wherein, the first power supply is a power supply that outputs a first voltage, and the second power supply is a power supply that outputs a second voltage. The control module can control the drive module to switch between at least a first working state and a second working state. In the first working state, the first input terminal of the drive module is closed to the output terminal of the drive module, and the second input terminal of the drive module is open to the output terminal of the drive module. In the second working state, the first input terminal of the drive module is open to the output terminal of the drive module, and the second input terminal of the drive module is closed to the output terminal of the drive module. Alternatively, the first power supply is a power supply that outputs a first voltage, and the second power supply is a power supply that outputs a third voltage. The control module can control the drive module to switch between at least a first operating state and a second operating state. In the first operating state, the first input terminal of the drive module is closed to the output terminal of the drive module, and the second input terminal of the drive module is disconnected from the output terminal of the drive module. In the second operating state, both the first input terminal and the second output terminal of the drive module are closed to the output terminal of the drive module. The first input terminal and the second output terminal of the drive module are connected in parallel to output so that the power supply with the first voltage and the power supply with the third voltage are superimposed to form the power supply with the second voltage.

5. A fast-switching UPS device according to claim 1, characterized in that, The driving module includes a diode D1, semiconductor switching transistors Q1, Q2, and Q3, resistors R1, R2, and R3. The anode of diode D1 is connected to a first power supply, and the input terminal of switching transistor Q1 is connected to a second power supply. The first power supply is a power supply that outputs a first voltage, and the second power supply is a power supply that outputs a third voltage. The output terminal of switching transistor Q1 is connected to the cathode of diode D1 and the beginning of a relay coil. The end of the relay coil is connected to the input terminal of switching transistor Q3. The input terminal of switching transistor Q2 is connected to the controlled terminal of switching transistor Q1. The output terminal of switching transistor Q2 is connected to the beginning of resistor R1. The end of resistor R1 and the output terminal of switching transistor Q3 are both grounded. The beginning of resistor R2 is connected to the controlled terminal of switching transistor Q2, and the beginning of resistor R3 is connected to the controlled terminal of switching transistor Q3. The control module is connected to the end of resistor R2 and the end of resistor R3.

6. A fast-switching UPS device according to claim 1, characterized in that, It also includes an AC voltage regulator module, the output terminal of the input module is connected to the input terminal of the AC voltage regulator module, and the output terminal of the AC voltage regulator module is connected to the first input terminal of the switch to realize the connection between the output terminal of the input module and the first input terminal of the switch.

7. A fast-switching UPS device according to claim 1, characterized in that, It also includes a rectifier and voltage regulator module, the output terminal of the input module is connected to the input terminal of the rectifier and voltage regulator module, and the output terminal of the rectifier and voltage regulator module is connected to the energy storage module to realize the connection between the output terminal of the input module and the energy storage module.

8. A fast-switching UPS device according to claim 1, characterized in that, It also includes an inverter module, the energy storage module is connected to the input terminal of the inverter module, and the output terminal of the inverter module is connected to the second input terminal of the switching switch to realize the connection between the second input terminal of the switching switch and the energy storage module.

9. A fast-switching UPS device according to claim 1, characterized in that, The input module includes a start switch S1, the first end of which is connected to the mains power, and the tail end of which is connected to the first input terminal of the switch and the energy storage module, respectively.

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