An uninterruptible emergency power supply

Abstract

The utility model discloses an uninterrupted emergency power supply, its technical scheme main points include external power supply, power supply module, the power supply module has emergency mode and normal mode, and the power supply module is directly powered by external power supply under normal mode, and the current for emergency is directly outputted by the power supply module inside under emergency mode, the power supply module includes: power supply unit, control unit, switching unit, emergency power generating unit, the emergency power generating unit includes delay starting generator, flywheel, UPS battery, the flywheel can drive generator work output current, the flywheel is provided with motor, and the UPS battery is electrically connected with motor. The utility model discloses through the setting of flywheel and UPS battery, when the grid failure, the stored kinetic energy is converted into electric energy for power supply unit to provide temporary power supply, so that the power supply of the power gap of the section of time from the grid failure power failure to generator starting normal power supply is filled up, realizes the uninterrupted power supply.

Description

Technical Field

[0001] This utility model relates to the field of emergency power supply technology, and more specifically to an uninterruptible emergency power supply. Background Technology

[0002] Currently, an emergency power supply is an emergency power supply device with a diesel internal combustion engine as the core power source, equipped with a start-up control module, fuel supply system, power distribution line and switching switch. When the power grid fails, the diesel internal combustion engine is automatically started, the generator produces AC power, and then the power is delivered to the load through the switching switch to realize emergency power supply and ensure the continuous operation of critical equipment or systems during the power outage.

[0003] However, there are still some defects in the existing technologies mentioned above. The existing emergency power supply judgment relies on the configuration of grid-side voltage detection units, which cannot distinguish between short-term power outages and long-term power outages, resulting in frequent invalid starts, which leads to increased diesel consumption, equipment wear and tear, and exhaust emissions. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides an uninterrupted emergency power supply.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes an external power supply and a power supply module, wherein the power supply module has an emergency mode and a normal mode. In the normal mode, the power supply module is directly powered by the external power supply; in the emergency mode, the power supply module internally outputs current for emergency use. The power supply module includes: The power supply unit receives internal debugging current and supplies power to subsequent components. The control unit is used to monitor the working status of each unit in the power supply module and control and coordinate the operation of each unit. The switching unit includes a first switch between the power supply unit and the external power supply, and a second switch between the power supply units, used to switch the current transmission channels between emergency mode and normal mode. Emergency power generation unit, in emergency mode, outputs emergency power; The emergency power generation unit includes a delayed-start generator, a flywheel, and a UPS battery. The flywheel can drive the generator to output current. The flywheel is equipped with a motor, and the UPS battery is electrically connected to the motor.

[0006] The present invention is further configured such that the rotating shaft of the generator used for generating electricity is fixedly connected coaxially to the flywheel.

[0007] The present invention is further configured such that: the generator is equipped with a timer, and the timer is connected to the control unit.

[0008] The present invention is further configured such that: the control unit includes a first sensor disposed near the outside of the first switch and a second sensor disposed near the inside of the first switch.

[0009] The present invention is further configured such that: the flywheel is equipped with a speed sensor, which is connected to the control unit.

[0010] The present invention is further configured such that: the power supply module is provided with an adjustment unit for modulating the current, and the adjustment unit is located on the input side of the power supply unit.

[0011] In summary, this utility model has the following beneficial effects: 1. By storing kinetic energy through a flywheel and using a UPS battery to drive the motor to compensate for the attenuation of the flywheel's kinetic energy, the flywheel enables the generator rotor to continue rotating and generating electricity during a grid failure. This allows the kinetic energy stored in the flywheel and the electrical energy stored in the UPS battery to jointly provide temporary power to the power supply unit, thus filling the power gap during the period from grid failure to generator startup and normal power supply. This ensures uninterrupted power supply to the power supply unit throughout the entire process of switching from grid failure to generator power supply.

[0012] 2. By setting a delayed generator start time, the start-up judgment time of this utility model is formed, so that a brief power outage within a few seconds will not start the drive engine, thus preventing the generator from repeatedly starting and stopping due to frequent power grid fluctuations.

[0013] 3. By directly connecting the flywheel and the generator's rotating shaft, the flywheel-rotor assembly is accelerated to near its rated speed under normal conditions. When switching to emergency mode, the generator rotor is already rotating at high speed the moment the generator starts, and it is ready to generate electricity, completely skipping the traditional start-up, acceleration, and stabilization process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this embodiment; Figure 2 This is a flowchart of this embodiment; Figure 3 This is a schematic diagram of the normal mode state in this embodiment; Figure 4 This is a schematic diagram of the emergency mode status in this embodiment; Figure 5 This is a schematic diagram of the disconnected state in this embodiment; Reference numerals: 100, external power supply; 200, power supply module; 210, power supply unit; 220, control unit; 221, first sensor; 222, second sensor; 230, switching unit; 231, first switch; 232, second switch; 240, emergency power generation unit; 241, generator; 2411, timer; 242, flywheel; 243, UPS battery; 244, motor; 250, regulating unit. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] This embodiment discloses an uninterruptible emergency power supply, such as Figures 1 to 5 As shown, it includes an external power supply 100 and a power supply module 200. The power supply module 200 has an emergency mode and a normal mode. In the normal mode, the power supply module 200 is directly powered by the external power supply 100; in the emergency mode, the power supply module 200 internally outputs emergency current. The power supply module 200 includes: Power supply unit 210 receives internal debugging current and supplies power to subsequent components; The control unit 220 is used to monitor the working status of each unit of the power supply module 200 and control and coordinate the operation of each unit; The switching unit 230 includes a first switch 231 disposed between the power supply unit 210 and the external power supply 100, and a second switch 232 disposed between the power supply units 210, for switching the current transmission channel between emergency mode and normal mode. Emergency power generation unit 240, in emergency mode, outputs emergency power; The emergency power generation unit 240 includes a delayed-start generator 241, a flywheel 242, and a UPS battery 243. The flywheel 242 drives the generator 241 to output current. The flywheel 242 is equipped with a motor 244. The UPS battery 243 is electrically connected to the motor 244. In emergency mode, the flywheel 242 outputs power by driving the rotor to rotate. The UPS battery inputs power to the motor 244. Some power flows directly to the power supply unit to supply power, and some power serves as a temporary power source to maintain the rotation speed of the flywheel 242. The power supply unit 210 can rely on the kinetic energy stored in the flywheel 242 and the power stored in the UPS to support the generator 241 for a period of time, so that the generator 241 can start immediately when a power outage occurs and can wait for tens of seconds before starting again. By delaying the start, the unit can distinguish between a brief short-circuit instantaneous fault and a continuous power outage. For short-term power outages lasting seconds or even tens of seconds, the generator 241 can be started without interruption, reducing the number of times the generator 241 is started and stopped, reducing mechanical wear, extending the service life of the high-value generator 241, and preventing the generator 241 from repeatedly starting and stopping due to frequent power grid fluctuations. This avoids frequent disturbances in the voltage and frequency of the power supply unit 210 and improves the power supply quality.

[0017] Further improvements include a generator 241 whose rotating shaft is coaxially and fixedly connected to a flywheel 242. The flywheel 242 and the generator's rotating shaft form an integrated structure; when the flywheel 242 rotates, it drives the rotating shaft to rotate as well. In normal mode, the external power supply 100 drives the motor 244 to rotate the flywheel, allowing the flywheel 242 to idle and store energy. When the external power supply 100 fails, it switches to emergency mode. The flywheel 242 continues to rotate along with the rotating shaft due to inertia, driving the rotor of the generator 241 to output current. The current generated by the generator 241 flows through the control unit 220 to continuously supply power and continues to supply current to the power supply unit 210, preventing power interruption in the power supply unit 210. When the engine is officially started, since the generator 241 rotor has already rotated under the drive of the flywheel 242, the generator 241 can immediately enter the state of generating power, achieving rapid start-up.

[0018] Further improvements include a timer 2411 installed in the generator 241, which is connected to the control unit 220. The timer 2411 is used to delay the start-up of the generator 241. When the control unit 220 switches the power supply module 200 from normal mode to emergency mode, the timer 2411 begins counting down. When the timer 2411 reaches zero, the generator 241 starts generating electricity. When normal power supply is achieved, the control unit 220 pauses and resets the timer 2411. The timer 2411 ensures reliable delayed start-up of the generator 241, preventing accidental start-up during momentary fluctuations in external power supply 100, improving system stability, reducing the number of generator start-stop cycles, minimizing unnecessary starts, and reducing machine wear.

[0019] In a further improvement, the control unit 220 includes a first sensor 221 located near the outside of the first switch 231 and a second sensor 222 located near the inside of the first switch 231. The first sensor 221 is used to monitor the power parameters of the output current of the external power supply 100, and the second sensor 222 is used to monitor the current power parameters of the input power supply unit 210. The control unit 220 receives real-time data from these first sensors 221 and second sensors 222, and can detect abnormalities in the external power supply 100 and faults in the internal power supply unit 210 in real time, determine the status of the external power supply 100 and the needs of the power supply unit 210. When the first sensor 221 detects an abnormal current, it controls the action of the switching unit 230 to switch from the normal mode to the emergency mode. When the second sensor 222 receives an abnormality, it controls the switching unit 230 to disconnect both the first switch 231 and the second switch 232, which facilitates effective fault isolation.

[0020] Furthermore, the flywheel 242 is equipped with a speed sensor, which is connected to the control unit 220. In this embodiment, the speed sensor is preferably a Hall effect sensor. This sensor can monitor the rotational speed of the flywheel 242 in real time and send the data to the control unit 220. The control unit 220 can adjust the speed of the flywheel 242 within an ideal range according to a preset speed threshold, ensuring that the flywheel 242 is always in its optimal working state.

[0021] To further improve the system, the power supply module 200 is equipped with an adjustment unit 250 for modulating the current, which is located on the input side of the power supply unit 210. The adjustment unit 250 receives the output current from the emergency power generation unit 240 and, through the current parameters monitored by the control unit 220, modulates the input current by performing actions such as voltage stabilization, noise filtering, and frequency adjustment to make it closely match the input current of the external power supply 100. This ensures that the same power quality is achieved in emergency mode as in normal mode, thus improving overall reliability.

[0022] Working principle of this utility model In normal mode, the input current of the external power supply 100 is directly delivered to the power supply unit 210 through the first switch 231 to supply power to the load.

[0023] Control unit 220 monitors the entire system status. When the external power supply 100 fails, the first and second sensors transmit fault signals to control unit 220. Control unit 220 switches from normal mode to emergency mode and transmits the signal to each unit, causing the first switch 231 to open. At this time, timer 2411 resets its timing. The flywheel 242 continues to rotate due to inertia, driving generator 241 to generate electricity. The current generated by generator 241 is then transmitted to the power supply unit via control unit 220. The power supply unit 210 simultaneously maintains the operation of the control unit 220 and the power supply unit 210. The UPS battery 243 provides auxiliary power to the flywheel 242 to compensate for the decrease in the rotation speed of the flywheel 242 and ensure that the generator 241 continuously outputs a stable current. When the timer 2411 returns to zero, the generator 241 officially starts working, and the second switch 232 will be turned on to continuously supply power to the power supply unit 210. Since the flywheel 242 is combined with the rotating shaft and the flywheel 242 is rotating at this time, the startup process of the generator 241 is very fast, achieving an almost seamless switching transition.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An uninterruptible emergency power supply, comprising an external power source (100) and a power supply module (200), wherein the power supply module (200) has an emergency mode and a normal mode; in the normal mode, the power supply module (200) is directly powered by the external power source (100); and in the emergency mode, the power supply module (200) directly outputs emergency current from within itself, characterized in that: The power supply module (200) includes: The power supply unit (210) receives the internal debugging current and supplies power to subsequent components; The control unit (220) is used to monitor the working status of each unit of the power supply module (200) and control and coordinate the operation of each unit; The switching unit (230) includes a first switch (231) disposed between the power supply unit (210) and the external power supply (100) and a second switch (232) disposed between the power supply units (210), for switching the current transmission channels between emergency mode and normal mode; Emergency power generation unit (240), in emergency mode, outputs emergency power; The emergency power generation unit (240) includes a delayed start generator (241), a flywheel (242), and a UPS battery (243). The flywheel (242) can drive the generator (241) to output current. The flywheel (242) is equipped with a motor (244), and the UPS battery (243) is electrically connected to the motor.

2. The uninterruptible emergency power supply according to claim 1, characterized in that: The generator (241) has a rotating shaft for generating electricity that is coaxially and fixedly connected to the flywheel (242).

3. The uninterruptible emergency power supply according to claim 1, characterized in that: The generator (241) is equipped with a timer (2411), which is connected to the control unit (220).

4. The uninterruptible emergency power supply according to claim 3, characterized in that: The control unit (220) includes a first sensor (221) disposed near the outside of the first switch (231) and a second sensor (222) disposed near the inside of the first switch (231).

5. The uninterruptible emergency power supply according to claim 1, characterized in that: The flywheel (242) is equipped with a speed sensor, which is connected to the control unit (220).

6. The uninterruptible emergency power supply according to claim 1, characterized in that: The power supply module (200) is provided with an adjustment unit (250) for modulating the current, and the adjustment unit (250) is located on the input side of the power supply unit (210).

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