Combined movable multifunction long-time emergency power supply

Abstract

The application provides a combined movable multifunctional long-time emergency power supply, comprising a fuel engine for outputting high-frequency three-phase alternating current and a power output control system for controlling output current, wherein the power output control system comprises a rectifier and an inverter, an input end of the rectifier is connected with a power supply output end of the fuel engine, the rectifier inputs high-frequency three-phase alternating current input by the fuel engine after AC-DC conversion to a direct-current bus, a control end of the direct-current bus is bidirectionally communicated with a main controller, and the main controller monitors an instantaneous value of input current on the direct-current bus in real time and controls the direct-current bus to output corresponding direct-current to the inverter and a charge-discharge controller through electric signals respectively. The emergency power supply device of the application can adapt to various load demands: through modular design, different function modules can be flexibly replaced, so as to meet the power load demand of impact, electric vehicle charging, emergency long-time power supply and power grid connection and the power demand of various different scenes.

Description

Technical Field

[0001] This invention relates to the field of emergency power supply technology, and in particular to a modular, portable, multifunctional, long-lasting emergency power supply that adopts a standardized modular design and allows for quick combination and replacement of functional modules. Background Technology

[0002] In modern society, the stability of power supply is crucial. In many situations, such as industrial production, construction sites, outdoor operations, and sudden emergencies, there are frequent fluctuations in power load, and existing emergency power supplies often struggle to meet the complex and ever-changing power demands. Some traditional emergency power supplies rely on a single energy source, resulting in very limited endurance in outdoor environments. Furthermore, with the increasing number of electrical devices, their power requirements vary significantly. While some current emergency power supply devices have switchable capabilities, module replacement is cumbersome and complex, and they cannot stably output 220 / 380 volt low-voltage three-phase AC power that meets industrial standards. For example, patent application CN202310304867, entitled "A Combined New Energy Emergency Power Supply," discloses a combined power supply device, but it clearly suffers from poor functionality, large size, and heavy weight. Therefore, developing a multifunctional, long-duration emergency power supply that can flexibly adapt to different load demands, provide stable power, and is easy to move and combine is of significant practical importance. Summary of the Invention

[0003] To address the problem that current complex outdoor environments make it difficult to meet power demands, this invention introduces a modular, portable, multifunctional, long-lasting emergency power supply based on standardized module design.

[0004] The present invention relates to a combined portable multifunctional long-term emergency power supply, comprising a fuel engine for outputting high-frequency three-phase AC power and a power output control system for controlling the output current. The power output control system includes a rectifier and an inverter. The input terminal of the rectifier is connected to the power output terminal of the fuel engine. The rectifier converts the high-frequency three-phase AC power input from the fuel engine into AC-DC power and inputs it to a DC bus. The control terminal of the DC bus is bidirectionally connected to a main controller. The main controller monitors the instantaneous value of the input current on the DC bus in real time and controls the DC bus to output corresponding DC power to the inverter and the charge / discharge controller via electrical signals. The output terminal of the inverter is connected to the main input interface of a standardized quick-release interface assembly. Both the inverter and the charge / discharge controller are bidirectionally connected to the main controller module. The charge / discharge interface of the charge / discharge controller is connected to a battery and controls the charging and discharging of the battery. Functional modules are connected to the output interface of the standardized quick-release interface assembly. The main controller has a pre-installed control program that operates according to the following control strategy: 1) First, the device is switched on, the system is initialized, and status detection is performed: The main controller initiates a self-test operation, first detecting the output voltage, output frequency, and phase of the fuel engine, and simultaneously detecting the voltage, capacitance, and battery health status of the battery. The main controller also issues commands to detect and identify the functional modules connected to the standardized quick-release interface; 2) Load demand is analyzed: The main controller monitors the real-time power demand of the functional modules, analyzes the characteristics of the functional modules, and predicts the changing trend of the power required by the functional modules; 3) An energy allocation strategy is formulated: The main controller calculates the current allocation value and power value of each output channel based on the monitoring data, determines the optimal energy allocation ratio, and controls the fuel engine to... First, the basic load power of the functional modules in steady state is met, while the battery is controlled to prioritize meeting the transient peak load power of the functional modules; 4) Power conversion control: The rectifier converts the three-phase AC power input from the fuel engine into DC power on the bus. After the DC power is input to the DC bus, the DC bus outputs current to the charge and discharge controller and the inverter respectively. The DC power input to the charge and discharge controller is converted to AC power by bidirectional DC-DC conversion and then output to the functional modules through the standardized quick-release interface; 5) The main controller detects the status of the functional modules on the load in real time and adjusts the PWM waveform parameters in real time. It dynamically adjusts the power distribution of each functional module to achieve system efficiency optimization. At the same time, the main controller achieves stable output of the functional modules by adjusting the output power parameters.

[0005] In this invention, the fuel engine, power output control system, standardized quick-release interface components, and battery are all installed in a modular form within the power supply cabinet. It can be seen that the power supply of this invention, through modular integration of the fuel engine system, high-power battery system, and power output and control system, ensures that the dimensions, interface types, and electrical parameters of each module adhere to a unified standard. It can output 220 / 380 volt low-voltage three-phase AC power, making it suitable for locations with large power load fluctuations and various emergency situations. It supports the rapid replacement of high-power modules, charging modules, and emergency power supply modules to meet diverse power needs, while simultaneously achieving standardized and rapid assembly in the production process.

[0006] Furthermore, a protection circuit is also provided in the power output control system. The protection circuit is electrically connected to the rectifier, the charge / discharge controller and the inverter respectively. The protection circuit monitors the current value of the rectifier, the charge / discharge controller and the inverter in real time and feeds it back to the main controller. The main controller then adjusts the output current and controls the charging power of the functional modules.

[0007] Furthermore, the standardized quick-release interface assembly is equipped with high-power module interfaces, charging pile module interfaces, drone charging module interfaces, and emergency power supply module interfaces. This invention adopts a detachable modular installation structure, with each functional module (such as the fuel engine system, high-power battery system, and power output and control system) connected via standardized quick-release interfaces, supporting rapid disassembly and assembly, thus facilitating emergency maintenance and transportation. For example, when applied to emergency rescue scenarios in rugged terrains such as steep slopes and canyons, the entire unit can be disassembled into independent modules (each module weighing ≤25kg, suitable for manual handling), and conveniently transported to the work site via carrying, cableway transport, or other methods.

[0008] Furthermore, the sampling frequency of the protection circuit is 10kHz, and the temperature monitoring threshold of the protection circuit is 85℃. This invention has specifically set the sampling frequency and protection temperature of the protection circuit. This is a targeted setting based on the power supply structure of this invention and in conjunction with experimental research. Under these frequency and temperature conditions, optimal working efficiency can be obtained while ensuring stable and reliable operation of the equipment.

[0009] Furthermore, the DC voltage of the bus is 400V.

[0010] Compared with the prior art, the beneficial effects of the present invention are: 1. The emergency power supply equipment of the present invention can adapt to various load requirements: through modular design, different functional modules can be flexibly replaced to meet the power needs of various scenarios such as impact power load, electric vehicle charging, emergency long-term power supply and Internet access, thereby improving the versatility and practicality of the emergency power supply.

[0011] 2. Stable power output: Due to the coordinated operation of the fuel engine and high-power battery system, along with the advanced power output and control system, it can output a stable 220 / 380 volt low-voltage three-phase AC power, effectively dealing with places with large fluctuations in power supply load and ensuring the stability and reliability of power supply.

[0012] 3. Long-term power supply capability: The efficient and stable operation of the fuel engine and the energy storage function of the battery in this invention enable this emergency power supply to have a long-term power supply capability, which can meet the needs of emergency power supply for a long time and reduce the losses caused by power outages.

[0013] 4. Convenient mobile modular design: The overall design adopts a mobile modular design, and each module is easy to install and disassemble, which facilitates rapid deployment and use in different locations, improving the mobility and response speed of the emergency power supply.

[0014] 5. Improve production efficiency during equipment manufacturing: Due to the standardized design of each module, the production process can be completed by quickly assembling standard modules, which greatly improves production efficiency, reduces production costs, and is conducive to large-scale promotion and application. Attached Figure Description

[0015] Figure 1 This is a block diagram of the overall structure of the combined portable multifunctional long-term emergency power supply of the present invention. Figure 2 This is a circuit structure block diagram of the power output control system in this invention; Figure 3 This is a control strategy diagram of the main controller in this invention.

[0016] In the diagram, 1—Fuel engine, 2—Power output control system, 21—Rectifier, 22—Inverter, 23—DC bus, 24—Main controller, 25—Charge and discharge controller, 26—Protection circuit, 3—Standardized quick-release interface assembly, 31—High-power module interface, 32—Charging pile module interface, 33—UAV charging module interface, 34—Emergency power supply module interface, 4—Battery, 5—Power supply combination cabinet. Detailed Implementation

[0017] See Figure 1 and Figure 2This invention introduces a combined, portable, multifunctional, long-term emergency power supply, comprising a fuel engine 1 for outputting high-frequency three-phase AC power and a power output control system 2 for controlling the output current. A 1.5-liter high-efficiency fuel engine can be selected, which achieves optimal thermal efficiency at 3600 rpm and has an output power of 60 kW. The matched generator has an output power of 58 kW and can stably output high-frequency three-phase AC power at a voltage of 150 volts. The power output control system 2 includes a rectifier 21 and an inverter 22. The input terminal of the rectifier 21 is connected to the power output terminal of the fuel engine 1. The rectifier 21 converts the high-frequency three-phase AC power input from the fuel engine 1 into AC-DC power and inputs it to the DC bus 23. The control terminal of the DC bus 23 is bidirectionally connected to the main controller 24. The main controller 24 monitors the instantaneous value of the input current on the DC bus 23 in real time and controls the DC bus 23 to output corresponding DC power to the inverter 22 and the charge / discharge controller 25 respectively through electrical signals. The voltage of the DC power on the bus is 400V. The output of the inverter 22 is connected to the main input interface of the standardized quick-release interface assembly 3. Both the inverter 22 and the charge / discharge controller 25 are bidirectionally connected to the main controller module 24. The charge / discharge interface of the charge / discharge controller 25 is connected to the battery 4 and controls the charging and discharging of the battery 4. A protection circuit 26 is also provided within the power output control system 2. The sampling frequency of the protection circuit 26 is 10kHz, and the temperature monitoring threshold of the protection circuit 26 is 85℃. The protection circuit 26 is electrically connected to the rectifier 21, the charge / discharge controller 25, and the inverter 22. The protection circuit 26 monitors the current values ​​of the rectifier 21, the charge / discharge controller 25, and the inverter 22 in real time and feeds them back to the main controller 24. The main controller 24 then adjusts the output current and controls the charging power of the functional modules. Functional modules are connected to the output interface of the standardized quick-release interface assembly 3. In this invention, the standardized quick-release interface assembly 3 is provided with a high-power module interface 31, a charging pile module interface 32, a drone charging module interface 33, and an emergency power supply module interface 34. In practical applications, corresponding functional modules and charging interfaces can be developed to meet the specific needs of different external devices.

[0018] During installation, the fuel engine 1, power output control system 2, standardized quick-release interface assembly 3, and battery 4 are all installed in a modular form within the power supply cabinet 5. This invention only requires assembling the modules of the fuel engine, high-power battery, and power output control system according to design requirements, ensuring secure connections and correct electrical connections between modules. A key feature of this invention is its simple and clear assembly process due to the standardized modular design, significantly reducing assembly time. For different load requirements and application scenarios, extremely convenient module replacement methods are designed. When there is an impact load (such as a motor), the functional module can be replaced with a high-power module to meet instantaneous high-power demands; when used for electric vehicle charging, the functional module can be replaced with a charging module to adapt to electric vehicle charging standards; when used for emergency loads, the output module can be replaced with a 220 / 380 volt emergency long-term power supply module; and when used for internet access, it can be replaced with an internet access module. The standardized interface design of each module ensures a simple and quick replacement process, requiring no professional tools or complex operations. Furthermore, it allows for rapid combination in different application scenarios. When long-term power supply is required, a fuel engine is used in conjunction with a corresponding output function module. The fuel engine's continuous and stable power output ensures long-term power supply needs. When short-term power supply is required and the environment requires quiet operation, an energy storage battery module is selected in conjunction with an output function module. The quiet and immediate power supply characteristics of the battery meet the needs. When there are impact loads in the electrical load, a fuel engine, a high-power energy storage battery module, and an output function module work together. The high-power energy storage battery module assists the fuel engine at the moment of impact, ensuring the stability of the power supply and meeting the power demand of the impact load.

[0019] See Figure 3In this invention, a control program is pre-installed in the main controller 24. The control program operates according to the following control strategy: 1) First, the device switch is turned on, the system is initialized, and status detection is performed: The main controller starts a self-test operation. The main controller first detects the output voltage, output frequency, and phase of the fuel engine. At the same time, the main controller detects the voltage, capacitance, and battery health status of the battery. The main controller also issues a command to detect and identify the functional modules connected to the standardized quick-release interface; 2) Load demand is analyzed: The main controller monitors the real-time power demand of the functional modules, analyzes the characteristics of the functional modules, and predicts the changing trend of the power required by the functional modules; 3) Energy distribution strategy is formulated: The main controller calculates the current distribution value and power value of each output channel based on the monitoring data, determines the optimal energy distribution ratio, and controls the fuel... The engine prioritizes meeting the steady-state basic load power of the functional modules, while controlling the battery to prioritize meeting the transient peak load power of the functional modules; 4) Power conversion control: The rectifier converts the three-phase AC power input from the fuel engine into DC power on the bus. After the DC power is input to the DC bus, the DC bus outputs current to the charge / discharge controller and the inverter respectively. The DC power input to the charge / discharge controller is converted to AC power through bidirectional DC-DC conversion to control the charging / discharging rate of the battery. The DC power input to the inverter is converted to AC power through DC-AC conversion and then output to the functional modules through a standardized quick-release interface; 5) The main controller detects the status of the functional modules on the load in real time and adjusts the PWM waveform parameters in real time. It dynamically adjusts the power distribution of each functional module to achieve system efficiency optimization. At the same time, the main controller achieves stable output of the functional modules by adjusting the output power parameters.

[0020] In this invention, the control strategy of the main controller and the hardware are perfectly integrated. When the fuel engine starts, it generates electricity, and the output AC power is converted into DC power by a rectifier. Part of the DC power is used to charge the high-power battery, and the other part, along with the DC power output from the battery, enters the inverter. The inverter converts the DC power into 220 / 380 volt low-voltage three-phase AC power. The controller monitors and adjusts the output voltage, frequency, and phase in real time to ensure stable and reliable power output. Simultaneously, various protection circuits monitor the operating parameters of the power system in real time. When abnormal conditions such as overcurrent, overvoltage, or undervoltage occur, protective measures are immediately taken, such as cutting off the circuit, to prevent equipment damage.

[0021] It should also be noted that, considering adaptability to complex terrain and rapid outdoor maintenance, this invention employs a modular design to address the challenge of transporting traditional emergency power supplies in steep slopes, jungles, and other treacherous locations as a whole unit. Each module is lightweight and compact, supporting dispersed manual transport or transport using simple tools. Upon arrival at the site, it can be quickly assembled via standardized interfaces, significantly shortening deployment time in complex environments. This is particularly suitable for emergency rescue scenarios involving sudden disasters such as earthquakes and landslides, enhancing the equipment's environmental adaptability and mission response capabilities.

[0022] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the technical solutions. Although the applicant has described the present invention in detail with reference to preferred embodiments, those skilled in the art should understand that any modifications or equivalent substitutions made to the technical solutions of the present invention cannot depart from the spirit and scope of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A modular, portable, multi-functional, long-lasting emergency power supply, characterized in that: The system includes a fuel engine (1) for outputting high-frequency three-phase AC power and a power output control system (2) for controlling the output current. The power output control system (2) includes a rectifier (21) and an inverter (22). The input terminal of the rectifier (21) is connected to the power output terminal of the fuel engine (1). The rectifier (21) converts the high-frequency three-phase AC power input from the fuel engine (1) into AC-DC power and inputs it to the DC bus (23). The control terminal of the DC bus (23) is bidirectionally connected to the main controller (24). The main controller (24) monitors the DC bus (23) in real time. The instantaneous value of the input current is controlled by an electrical signal to output corresponding DC power to the inverter (22) and the charge / discharge controller (25) respectively via the DC bus (23). The output terminal of the inverter (22) is connected to the main input interface of the standardized quick-release interface assembly (3). At the same time, the inverter (22) and the charge / discharge controller (25) are bidirectionally connected to the main controller module (24). The charge / discharge interface of the charge / discharge controller (25) is connected to the battery (4) and controls the charging and discharging of the battery (4). A functional module is connected to the output interface of the standardized quick-release interface assembly (3). A control program is pre-installed in the main controller (24). The control program operates according to the following control strategy: 1) First, start the equipment switch, initialize the system and perform status detection: The main controller starts the self-test operation. The main controller first detects the output voltage, output frequency and phase of the fuel engine. At the same time, the main controller detects the voltage, capacitance and battery health status of the battery. The main controller also issues a command to detect and identify the functional modules connected on the standardized quick-release interface; 2) Analyze the load demand: The main controller monitors the real-time power demand of the functional modules and analyzes the characteristics of the functional modules. At the same time, it predicts the trend of power change required by the functional modules; 3) Formulate an energy distribution strategy: The main controller calculates the current distribution value and power value of each output channel according to the monitoring data, determines the optimal energy distribution ratio, and controls the fuel engine. The main controller prioritizes meeting the steady-state basic load power of the functional modules, while controlling the battery to prioritize meeting the transient peak load power of the functional modules; 4) Power conversion control: The rectifier converts the three-phase AC power input from the fuel engine into DC power from the bus. After the DC power is input to the DC bus, the DC bus outputs current to the charge / discharge controller and the inverter respectively. The DC power input to the charge / discharge controller is converted to AC power by bidirectional DC-DC conversion to control the charging / discharging rate of the battery. The DC power input to the inverter is converted to AC power by DC-AC conversion and then output to the functional modules through a standardized quick-release interface; 5) The main controller detects the status of the functional modules on the load in real time and adjusts the PWM waveform parameters in real time. It dynamically adjusts the power distribution of each functional module to optimize system efficiency. At the same time, the main controller adjusts the output power parameters to achieve stable output of the functional modules.

2. The combined portable multifunctional long-term emergency power supply according to claim 1, characterized in that, The fuel engine (1), power output control system (2), standardized quick-release interface assembly (3) and battery (4) are all installed in the power combination cabinet (5) in a modular form.

3. The combined portable multifunctional long-term emergency power supply according to claim 2, characterized in that, The power output control system (2) is also equipped with a protection circuit (26). The protection circuit (26) is electrically connected to the rectifier (21), the charge and discharge controller (25) and the inverter (22) respectively. The protection circuit (26) monitors the current values ​​of the rectifier (21), the charge and discharge controller (25) and the inverter (22) in real time and feeds them back to the main controller (24). The main controller (24) then adjusts the output current and controls the charging power of the functional module.

4. The combined portable multifunctional long-term emergency power supply according to claim 3, characterized in that, The standardized quick-release interface assembly (3) is provided with a high-power module interface (31), a charging pile module interface (32), a drone charging module interface (33), and an emergency power supply module interface (34).

5. The combined portable multifunctional long-term emergency power supply according to claim 4, characterized in that, The sampling frequency of the protection circuit (26) is 10kHz, and the temperature monitoring threshold of the protection circuit (26) is 85℃.

6. The combined portable multifunctional long-term emergency power supply according to claim 5, characterized in that, The DC voltage of the bus is 400V.

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