Multifunctional emergency operation power supply

Abstract

The invention discloses a multifunctional emergency operation power supply, relates to emergency power supply equipment of a power system, and aims to solve the problem of single output mode of the existing emergency operation power supply. The battery box module comprises a plurality of rechargeable single batteries, and the plurality of rechargeable single batteries are connected in series; the first inverter power supply module is electrically connected with the output end of the battery box module and is used for inverting direct current output by the battery box module into 220V alternating current; the second inverter power supply module is electrically connected with the output end of the battery box module and is used for inverting the direct current output by the battery box module into 380V alternating current; and the direct current output module is electrically connected with the output end of the battery box module and is used for outputting 12V direct current, 24V direct current, 110V direct current and / or 220V direct current. The emergency operation power supply has the beneficial effects that the diversification of the emergency operation power supply is enriched by multi-mode multi-voltage-level output and multifunctional power supply, and the emergency operation power supply is small in size, light in weight and convenient to carry.

Description

[0001] This invention relates to an emergency power supply device for power systems. Background Technology

[0002] In modern power systems, substations, as core nodes for power transmission and distribution, directly impact the safety and reliability of the entire power grid due to their operational stability. However, extreme situations involving complete substation power outages still occur frequently, with complex and varied causes: from transmission line faults caused by extreme weather (such as lightning strikes and snowstorms), to chain reactions triggered by equipment aging (such as transformer short circuits and circuit breaker malfunctions), to human factors such as grid dispatching errors or external damage (such as construction work severing cables), all can trigger a complete substation power outage. Once such an accident occurs, critical equipment within the substation that relies on continuous power supply will instantly fail, with consequences far exceeding the scope of a single equipment shutdown; for example, electric disconnectors... Operating mechanisms such as grounding switches that rely on AC power cannot operate when power is lost, resulting in the inability to isolate faulty areas in a timely manner, which may lead to secondary disasters such as bus short circuits and equipment burnout. DC power supply equipment such as relay protection devices, dispatch data communication network equipment, and five-prevention systems shut down due to battery depletion, causing protection signals to fail to be transmitted and dispatch instructions to be interrupted, leaving the "nerve center" of the power grid in a blind spot. Communication equipment such as walkie-talkies and mobile phones of on-site repair personnel lose contact due to depleted batteries, and emergency lighting systems go out, plunging fault location, isolation, and repair work into darkness and chaos, significantly prolonging the recovery time. According to statistics, the average repair time after a station-wide power outage can be extended by 2-3 times due to communication interruptions. Existing emergency operating power supplies are mostly single-output modes. For example, diesel generators can only provide 380V AC power and are not compatible with DC equipment. While UPS (Uninterruptible Power Supply) can output 220V AC and 24V DC, its capacity is limited, and additional adapters are required for different voltage levels, increasing wiring complexity. At the same time, existing emergency operating power supplies are generally bulky (such as diesel generator sets requiring trailer transport) or too heavy (such as lead-acid battery packs weighing up to 100 kilograms each), making them difficult to deploy quickly in the narrow spaces of substations or stairwells. In other words, the current mainstream emergency power supplies have significant defects and cannot meet the emergency needs of complex substation scenarios. The inadequacy of emergency operating power supplies in terms of functional integration, portability, and environmental adaptability has become a key bottleneck restricting the efficiency of power grid emergency repairs. Developing a portable emergency power supply device with multiple voltage outputs, high energy density, extreme environment tolerance, and intelligent management functions is an urgent need to solve the problem of substation-wide power outages and improve the resilience of the power grid. Summary of the Invention

[0003] The purpose of this invention is to solve the problem of the single output mode of existing emergency operating power supplies, and to propose a multifunctional emergency operating power supply.

[0004] The multifunctional emergency operating power supply of the present invention includes a battery box module, a first inverter power supply module, a second inverter power supply module, and a DC output module; The battery box module includes multiple rechargeable individual batteries, and the multiple rechargeable individual batteries are connected in series. The first inverter power module is electrically connected to the output terminal of the battery box module, and is used to convert the DC power output by the battery box module into 220V AC power. The second inverter power module is electrically connected to the output terminal of the battery box module and is used to convert the DC power output by the battery box module into 380V AC power. The DC output module is electrically connected to the output terminal of the battery box module and is used to output 12V DC, 24V DC, 110V DC and / or 220V DC.

[0005] Furthermore, it also includes the casing; The battery box module, the first inverter power supply module, the second inverter power supply module, and the DC output module are all housed inside the housing; and the outer wall of the housing is provided with a 220V AC output port, a 380V AC output port, a 12V DC output port, a 24V DC output port, a 110V DC output port, a 220V DC output port, a charging port, a main power switch, and a DC voltage selection switch.

[0006] Furthermore, a handle is provided on the top of the housing.

[0007] Furthermore, the housing is made of high-strength insulating material, with a non-slip and rounded surface, and is equipped with heat dissipation holes and a cooling fan. The housing operates in a temperature range of -20℃ to +60℃.

[0008] Furthermore, a USB port is also provided on the casing; the USB port supports 5V / 2A output.

[0009] Furthermore, the casing is also equipped with power and status indicators; The power and status indicator includes a multi-color LED power indicator, a dual-color LED working status indicator, and a buzzer; Multi-color LED power indicator lights are used to indicate different power levels of the battery module; Dual-color LED status indicator lights are used to indicate the working status of the battery box module; A buzzer is used to sound an alarm when the battery module is low on power and to trigger a fault alarm.

[0010] Furthermore, the DC output module includes a voltage selection circuit, a voltage regulation circuit, a filter circuit, and an output port; The voltage selection circuit controls the relay to switch the voltage divider resistor network through a DC voltage selection switch, achieving four output levels: 12V / 24V / 110V / 220V. A voltage regulator circuit is used to regulate the DC power output from a voltage selection circuit. The filter circuit is used to filter the regulated DC power. Output ports are used to output 12V DC, 24V DC, 110V DC and / or 220V DC.

[0011] Furthermore, the rechargeable single battery cell is a ternary lithium battery, a lithium iron phosphate battery, or a nickel-cadmium battery.

[0012] Compared with the prior art, the present invention has the following advantages: (1) Multi-mode and multi-voltage level output: It can provide AC power at two voltage levels of 220V and 380V at the same time to meet the working requirements of electric knife switch and other equipment; at the same time, it can also provide a suitable DC power supply for DC equipment such as dispatch data communication network machine, five-proof machine program lock and host system. The DC output voltage covers voltage levels such as 110V and 220V, which can be adapted to more types of DC equipment. (2) Multifunctional power supply: In addition to supplying power to specialized equipment in the substation, it also has a reserved USB interface for charging mobile devices such as mobile phones used by staff, ensuring smooth communication. At the same time, it can meet the emergency power needs of some small equipment in the production of related industries. (3) Portable Design: The device features a handheld design, making it small and lightweight, facilitating rapid movement and operation by staff within substations or industrial production sites, thus improving emergency response efficiency. Furthermore, it can meet the emergency power needs of some small equipment in related industries, demonstrating wide applicability. User-Friendly Operation Design: The device's interface is logically laid out, with comfortable button touches and a simple, clear operating procedure. Even first-time users can quickly master its operation through brief training. Additionally, multiple operating modes are provided to cater to different operating scenarios and user needs, further enhancing operational flexibility and convenience. (4) High-efficiency power conversion: The inverter power supply adopts advanced power electronics technology, which has high conversion efficiency and stable output performance, ensuring a reliable power supply for the equipment. Through advanced topology and control algorithm, the device can quickly achieve stable power conversion under different power input and load change conditions, minimize power loss, reduce energy waste, and fully meet the stringent requirements of high-efficiency power supply in emergency scenarios. (5) Simplified Output Interface Configuration: Multiple AC and DC terminals are internally provided, allowing for direct connection to the equipment in emergency situations, making operation simple and quick. These terminals adopt a standardized design, compatible with common power cables on the market, and feature anti-misinsertion structures at the interfaces to effectively prevent equipment damage or safety accidents caused by incorrect insertion, further enhancing the safety and reliability of the device. Furthermore, to further optimize the device's compatibility and ease of use, each interface is equipped with clear labels and protective covers, preventing dust and foreign objects from affecting performance and helping staff quickly locate the required interface in emergencies, improving operational efficiency. Attached Figure Description

[0013] Figure 1 The flowchart illustrates the working principle of a multifunctional emergency operating power supply as described in Specific Implementation Method 1. Figure 2 This is a three-dimensional structural diagram of the shell in the second specific implementation method; Figure 3 This is a schematic diagram of the front panel structure of the housing in the second specific embodiment. Detailed Implementation

[0014] Specific Implementation Method 1: Combination Figure 1 This embodiment describes a multi-functional emergency operating power supply, which includes a battery box module 1, a first inverter power supply module 2, a second inverter power supply module 3, and a DC output module 4. The battery box module 1 includes multiple rechargeable individual batteries, and the multiple rechargeable individual batteries are connected in series. The first inverter power module 2 is electrically connected to the output terminal of the battery box module 1, and is used to convert the DC power output by the battery box module 1 into 220V AC power. The second inverter power module 3 is electrically connected to the output terminal of the battery box module 1, and is used to convert the DC power output by the battery box module 1 into 380V AC power. The DC output module 4 is electrically connected to the output terminal of the battery box module 1 and is used to output 12V DC, 24V DC, 110V DC and / or 220V DC.

[0015] In this embodiment, the battery box module 1 has a voltage of U and a capacity of C. If ternary lithium batteries are used, multiple 3.7V ternary lithium single-cell battery boxes are connected in series to achieve the required voltage, and then multiple sets are connected in parallel according to capacity requirements. The battery box group is equipped with a battery box management system (BMS) to monitor parameters such as voltage, current, and temperature of the battery box, preventing overcharging, over-discharging, and overheating, and ensuring the safe and stable operation of the battery box. The voltage U=37V, the capacity C=5Ah, and it supports fast charging to 80% of the rated capacity within 30 minutes. Both the first inverter power supply module 2 and the second inverter power supply module 3 adopt PWM modulation and filtering circuits, and the conversion efficiency is ≥90%. The first inverter power supply module 2, the second inverter power supply module 3, and the DC output module 4 can work in parallel to simultaneously power AC and DC equipment. The emergency operation power supply outputs ≥78 Wh when used alone, and supports parallel expansion configurations of "one in use and one standby" or "two in use and one standby" to meet the emergency needs of substations of different sizes. The first inverter power module 2 mainly consists of a DC-AC conversion circuit, a control circuit, and a filter circuit. The DC-AC conversion circuit converts the DC power output from battery module 1 into AC power, and the control circuit regulates the frequency and voltage of the output AC power to stabilize it at 220V. The second inverter power module 3 mainly consists of a DC-AC conversion circuit, a control circuit, and a filter circuit. The DC-AC conversion circuit converts the DC power output from battery module 1 into AC power, and the control circuit regulates the frequency and voltage of the output AC power to stabilize it at 380V. The filter circuit filters the converted AC power to remove harmonics and other interference, improving power quality. The power of the inverter power modules is designed according to the total power requirements of the AC equipment to ensure stable driving of AC equipment such as electric disconnect switches. In this embodiment, the emergency operating power supply features: multi-voltage output: capable of simultaneously providing AC power at both 220V and 380V to meet the operational needs of equipment such as electric disconnectors; simultaneously, it can also provide compatible DC power for DC equipment such as dispatch data communication network equipment, five-proof machine program locks, and host systems, with DC output voltages covering 110V and 220V, adapting to more types of DC equipment; portable design: adopting a handheld structure, small in size and light in weight, facilitating rapid movement and operation by personnel within substations or industrial production sites, improving emergency response efficiency; high-efficiency power conversion: the inverter power supply employs advanced power electronics technology, possessing high conversion efficiency and stable output performance, ensuring a reliable power supply for equipment; and simple output interface configuration: internally equipped with multiple AC and DC terminals, allowing direct connection to equipment in emergency situations, making operation simple and quick. The emergency operating power supply uses the first inverter power supply module 2, the second inverter power supply module 3, and the DC output module 4 as its core hubs to achieve AC / DC dual-mode power supply. The first inverter power module 2 and the second inverter power module 3, based on advanced PWM modulation technology, can efficiently convert the DC power output from the battery box module 1 into AC power at standard voltage levels of 220V and 380V, precisely adapting to the power requirements of AC equipment such as electric disconnect switches, ensuring the stability and reliability of power transmission. Meanwhile, the DC output module 4 uses an intelligent voltage regulator module, directly drawing power from the battery box module 1. After multiple processing steps including filtering and voltage regulation, it outputs a stable and clean DC power supply, providing continuous and stable power support for DC equipment such as dispatch data communication network equipment and five-proof machine program locks. The two power supply modes work together to comprehensively guarantee the emergency power needs of the substation.

[0016] Performance Testing: Comprehensive performance testing was conducted on the assembled multi-functional portable emergency power supply in a laboratory environment. Tests included the stability of AC output voltage, current, and frequency; the accuracy of DC output voltage and current; the charging and discharging performance of the battery pack; and the power supply's conversion efficiency. By simulating different load conditions, the power supply's ability to meet the power supply needs of various devices was verified. Reliability Testing: The power supply undergoes reliability testing, including environmental tests such as high temperature, low temperature, humidity, vibration, and shock, as well as long-term continuous operation tests. Under high-temperature environments (e.g., 60℃) and low-temperature environments (e.g., -20℃), the power supply's performance stability is tested; under high-humidity environments (e.g., 95%RH), the power supply's insulation performance is tested; vibration and shock tests verify the power supply's anti-interference capabilities during transportation and use. Long-term continuous operation tests simulate the power supply's use in actual emergency scenarios, verifying its reliability under prolonged operation. Practical Application Testing: The power supply was brought to the substation site for practical application testing. In a simulated substation-wide power outage scenario, the power supply powered electric disconnect switches, dispatch data communication network equipment, five-prevention interlocking devices, host systems, and work mobile phones, among other devices. The operating status of the equipment was observed to verify the power supply's practical application effectiveness. Based on the results of the practical application testing, the power supply design was optimized and improved to ensure it meets the actual emergency power supply needs of the substation. Specific Implementation Method Two: Combination Figure 2 and Figure 3 This embodiment further defines the multifunctional emergency operating power supply described in Specific Embodiment 1. In this embodiment, a housing 5 is also included. The battery box module 1, the first inverter power supply module 2, the second inverter power supply module 3, and the DC output module 4 are all housed inside the housing 5; and the outer wall of the housing 5 is provided with a 220V AC output port, a 380V AC output port, a 12V DC output port, a 24V DC output port, a 110V DC output port, a 220V DC output port, a charging port, a main power switch, and a DC voltage selection switch.

[0017] In this embodiment, the total weight of the housing 5 is ≤5 kg; the AC output port and DC output port are both independent ports, and the port shapes and colors are different, with a structure to prevent mis-insertion. Multiple AC and DC terminals are reserved inside the housing 5 for quick power supply via a direct connection cable when the interfaces are incompatible.

[0018] Specific Implementation Method 3: This implementation method further defines the multi-functional emergency operating power supply described in Specific Implementation Method 2. In this implementation method, a handle 6 is provided on the top of the housing 5.

[0019] In this embodiment, the handle 6 is designed to facilitate operation by staff; the device integrates various preset functional modules; and most importantly, the weight design fully considers the needs of emergency operation scenarios, ensuring that staff will not be affected by the weight of the power supply during use, and can easily and efficiently complete various emergency tasks. Specific Implementation Method Four: This implementation method further defines the multi-functional emergency operating power supply described in Specific Implementation Method Two. In this implementation method, the housing 5 is made of high-strength insulating material, with anti-slip and rounded surface treatment, and is provided with heat dissipation holes and a cooling fan. The operating temperature range of the housing 5 is -20℃ to +60℃.

[0020] In this implementation, to further enhance the practicality and reliability of the device, the casing 5 is made of a special high-strength, highly insulating material. This material effectively resists external impacts and friction, prevents leakage risks, and provides a solid guarantee for the safe operation of personnel. Simultaneously, the casing surface undergoes a special anti-slip treatment, allowing personnel to maintain a firm grip even in complex environments such as dampness or oil stains, preventing the device from slipping and causing damage or safety hazards. Furthermore, the edges and corners of the casing are rounded to reduce injuries from accidental bumps, while also optimizing the overall appearance, making the device both functional and aesthetically pleasing. Regarding the heat dissipation design, multiple sets of heat dissipation holes and high-efficiency cooling fans are specifically designed. Through a scientific airflow layout, the heat generated during internal operation is promptly dissipated, effectively preventing performance degradation or malfunction due to overheating, further extending its service life, and ensuring stable operation under long-term continuous working conditions. To facilitate quick identification and operation by personnel, the casing is clearly labeled with the function indicators and operating instructions for each port, and is equipped with indicator lights. These lights use different colors and flashing states to intuitively reflect the device's operating status, charging progress, and other information, achieving convenient and intelligent human-machine interaction.

[0021] Specific Implementation Method 5: This implementation method further defines the multi-functional emergency operating power supply described in Specific Implementation Method 2. In this implementation method, a USB interface is also provided on the housing 5; the USB interface supports 5V / 2A output.

[0022] In this embodiment, in addition to supplying power to specialized equipment within the substation, a USB interface is also provided to charge mobile devices such as smartphones used by staff, ensuring uninterrupted communication. Simultaneously, it can meet the emergency power needs of some small equipment in related industries.

[0023] Specific Implementation Method Six: This implementation method further defines the multi-functional emergency operating power supply described in Specific Implementation Method Two. In this implementation method, the housing 5 is also provided with a power and status indicator device. The power and status indicator includes a multi-color LED power indicator, a dual-color LED working status indicator, and a buzzer; Multi-color LED power indicator lights are used to indicate different power levels of battery module 1; A dual-color LED working status indicator is used to indicate the working status of the battery box module 1; A buzzer is used to sound an alarm when the battery module 1 has low power and to trigger a fault alarm.

[0024] In this implementation, multi-color LED power indicators visually display the remaining battery power using different colors (such as green / yellow / red), helping maintenance personnel quickly determine the remaining battery life and avoid emergency interruptions due to insufficient power. Dual-color LED status indicators differentiate between "normal power supply," "overload," and "fault" states through color or flashing patterns (such as constant / fast flashing / slow flashing), reducing manual troubleshooting time and improving emergency response efficiency. A buzzer automatically alarms when the battery is low or a fault occurs, promptly reminding personnel to replace the power supply or troubleshoot even in noisy substation environments, preventing the risk of further accidents due to power failure. No additional testing tools are required; power status can be assessed through light and sound, reducing reliance on professional skills and making it particularly suitable for non-professionals to quickly get started in emergency situations. This significantly enhances the reliability and user experience in emergency scenarios, representing the core embodiment of "portability" and "intelligence."

[0025] Specific Implementation Method Seven: This implementation method further defines the multi-functional emergency operating power supply described in Specific Implementation Method Two. In this implementation method, the DC output module 4 includes a voltage selection circuit, a voltage regulation circuit, a filter circuit, and an output port. The voltage selection circuit controls the relay to switch the voltage divider resistor network through a DC voltage selection switch, achieving four output levels: 12V / 24V / 110V / 220V. A voltage regulator circuit is used to regulate the DC power output from a voltage selection circuit. The filter circuit is used to filter the regulated DC power. Output ports are used to output 12V DC, 24V DC, 110V DC and / or 220V DC.

[0026] In this embodiment, the voltage regulator circuit adopts a synchronous buck or buck-boost topology, accepts DC input (typically 37 V) from battery module 1, and outputs four adjustable voltages of 12 V, 24 V, 110 V, and 220 V, with a voltage regulation accuracy of ≤ ±1%. The filtering circuit uses a π-type LC filter with a ripple voltage ≤50 mV (peak-to-peak). The output ports are: a 12V / 5A aviation socket (with a foolproof key), a 24V / 10A Anderson plug, a 110V / 3A industrial terminal block, and a 220V / 3A quick-connect terminal. It also includes a protection circuit with the following features: overcurrent protection: electronic fuse, operating at 1.2 times the rated current, self-resetting; short-circuit protection: hiccup mode, automatically recovering after short-circuit removal; and reverse connection protection: MOSFET reverse cutoff, capable of withstanding ±60V continuous reverse voltage. The DC output module 4 operates by switching the voltage divider resistor network via a panel band switch or MCU-controlled relay, achieving four output levels: 12V / 24V / 110V / 220V. The main control chip (such as TI...) The LM5145 receives output sampling feedback, adjusts the PWM duty cycle, and maintains a constant set voltage. Each output port has an independent LED: a solid green light indicates normal operation, a flashing red light indicates overcurrent / short circuit, and no output is detected. Key parameters of the DC output module 4 include: input voltage range of 20V–42V, compatible with ternary lithium / lithium iron phosphate batteries (fully charged / discharged); output voltage levels of 2V, 24V, 110V, and 220V, requiring manual switching; maximum total output power of 400W, with all ports outputting simultaneously at the maximum limit; ripple noise ≤50 mVp-p, tested with a 20MHz bandwidth oscilloscope; operating efficiency ≥92%; operating temperature -30℃~+70℃, derating curve: power derating to 80% at temperatures >55℃.

[0027] Specific Implementation Method Eight: This implementation method further defines the multifunctional emergency operating power supply described in Specific Implementation Method Two. In this implementation method, the rechargeable single battery is a ternary lithium battery, a lithium iron phosphate battery, or a nickel-cadmium battery.

[0028] In this embodiment, the battery management system (BMS) provides overcharge, over-discharge, over-temperature, overcurrent, and short-circuit protection.

[0029] Lithium iron phosphate batteries offer high safety, minimizing the risk of combustion or explosion under high temperatures or overcharging. They operate at 3.2V, have a long cycle life, can be fast-charged, and exhibit no memory effect. While their energy density is relatively low, their cost is relatively low, and raw materials are abundant. Using lithium iron phosphate battery packs in this emergency operating power supply leverages their high safety and long cycle life to ensure stable and reliable power supply during multiple emergency applications. Nickel-chromium (NiCr) batteries: They have a certain degree of resistance to overcharge and over-discharge and good low-temperature performance. However, they contain toxic heavy metals such as cadmium, which pollute the environment. Compared to lithium iron phosphate (LFP) battery boxes, NiCr battery boxes have lower energy density and a relatively shorter cycle life, generally around 500 cycles. In this emergency operating power supply, if low-temperature operation is considered, NiCr battery boxes can be an option, but their environmental pollution issues must be weighed. (3) Ternary lithium batteries: They have high energy density, high voltage platform, large output power, and excellent low-temperature performance. However, their high-temperature stability is poor and their cost is relatively high. In scenarios where the size and weight of the power supply are important and the ambient temperature is relatively low, ternary lithium battery boxes can be considered as the power source to provide higher energy density and better low-temperature performance.

[0030] Considering the actual usage needs of substations and related industry production scenarios, this implementation prioritizes ternary lithium batteries as the power supply for emergency operation. Because they are suitable for scenarios with extremely high requirements for equipment endurance and portability, ternary lithium battery boxes can well meet the needs of both substation workers who need frequent movement and industrial production site operators who require convenient emergency power. Through design optimization, the size of the ternary lithium battery is adapted to the overall structure of the portable power supply device, and the weight is controlled within a range that operators can easily hold, generally between 4-5 kg, ensuring that the weight of the power supply does not affect work efficiency during emergency operations. If the ambient temperature in the substation area is low, a nickel-chromium battery box can be used; if safety and battery box life requirements are extremely high and the ambient temperature is stable, a lithium iron phosphate battery box can be used. The specific solution can be selected according to the requirements.

[0031] The design of the battery box capacity needs to comprehensively consider the power of various devices and the expected usage time. First, the power of AC devices (such as the motor of an electric disconnect switch) and the total power of DC devices (such as the control and dispatching data communication network equipment for the disconnect switch) must be calculated. For example, the total power of the AC devices is... The total power of DC equipment is The sum of other power is The estimated emergency use time is... Hours. Then the total energy requirement of the battery pack. Taking a ternary lithium battery box as an example, its nominal voltage is 3.7V. Assuming the battery box assembly consists of... A battery pack is composed of several battery boxes connected in series. The voltage of the battery pack is... = 3.7n. According to the energy formula ( For current, (For time), the required battery pack capacity can be calculated. .

[0032] In current power system operation and maintenance scenarios, the AC output power of conventional outdoor substation electric disconnector motors generally does not exceed 600W, while the AC output power of GIS electric disconnector motors is even lower, approximately 300W. Based on a single operation duration of 10 seconds and a cycle of 20 disconnectors, the total energy required to operate the disconnector motor is: 600W × 10s × 20 times ≈ 33Wh. The DC control power supply output power generally does not exceed 400W. Assuming the continuous operating time is the same as the disconnector operation time (10s × 20 times = 200s), the energy required for the DC equipment is: 400W × 200s (continuous operation) ≈ 22Wh. Other power totals 5Wh. Considering energy losses during inverter and DC-DC conversion processes, as well as line resistance and other factors, and based on the high-power output characteristics of ternary lithium batteries, the loss coefficient is set to 1.3. Therefore, the total energy required by the battery during simultaneous operation is: (33Wh + 22Wh + 5Wh) × 1.3 = 78Wh.

[0033] Calculate = 78Wh, assuming the battery pack voltage = 37V (i.e.) = 10), then the required battery capacity =78 / 37≈ 2Ah. However, in actual use, the usage time will be affected by various factors, such as the actual performance degradation of the battery, fluctuations in the actual load of the equipment, and changes in ambient temperature. To ensure sufficient margin in actual use, a 5Ah ternary lithium battery is selected. This battery, through a reasonable combination of series and parallel connections of individual cells, can meet the voltage requirements of the equipment while providing sufficient power reserve. At the same time, it is equipped with an advanced battery management system (BMS) to monitor the battery's voltage, current, temperature, and other parameters in real time, effectively preventing overcharging, over-discharging, overcurrent, and short circuits, comprehensively ensuring the safe operation and lifespan of the battery.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-functional emergency operating power supply, characterized in that, It includes a battery box module (1), a first inverter power supply module (2), a second inverter power supply module (3), and a DC output module (4). The battery box module (1) includes multiple rechargeable individual batteries, and the multiple rechargeable individual batteries are connected in series; the first inverter power module (2) is electrically connected to the output terminal of the battery box module (1) and is used to convert the DC power output by the battery box module (1) into 220V AC power; the second inverter power module (3) is electrically connected to the output terminal of the battery box module (1) and is used to convert the DC power output by the battery box module (1) into 380V AC power. The DC output module (4) is electrically connected to the output terminal of the battery box module (1) and is used to output 12V DC, 24V DC, 110V DC and / or 220V DC.

2. The multifunctional emergency operating power supply according to claim 1, characterized in that, It also includes the housing (5); The battery box module (1), the first inverter power supply module (2), the second inverter power supply module (3) and the DC output module (4) are all located inside the housing (5); and the outer wall of the housing (5) is provided with a 220V AC output port, a 380V AC output port, a 12V DC output port, a 24V DC output port, a 110V DC output port, a 220V DC output port, a charging port, a main power switch and a DC voltage selection switch.

3. A multifunctional emergency operating power supply according to claim 2, characterized in that, The top of the housing (5) is provided with a handle (6).

4. A multifunctional emergency operating power supply according to claim 2, characterized in that, The housing (5) is made of high-strength insulating material, with anti-slip and rounded surface treatment, and is equipped with heat dissipation holes and a cooling fan. The working temperature range of the housing (5) is -20℃ to +60℃.

5. A multifunctional emergency operating power supply according to claim 2, characterized in that, The housing (5) is also equipped with a USB interface; the USB interface supports 5V / 2A output.

6. A multifunctional emergency operating power supply according to claim 2, characterized in that, The housing (5) is also equipped with a power and status indicator; The power and status indicator includes a multi-color LED power indicator, a dual-color LED working status indicator, and a buzzer; Multi-color LED power indicator lights are used to indicate different power levels of the battery box module (1); A dual-color LED working status indicator is used to indicate the working status of the battery box module (1); A buzzer is used to alarm when the battery box module (1) is low on power and to trigger a fault alarm.

7. A multifunctional emergency operating power supply according to claim 2, characterized in that, The DC output module (4) includes a voltage selection circuit, a voltage regulation circuit, a filter circuit, and an output port; The voltage selection circuit controls the relay to switch the voltage divider resistor network through a DC voltage selection switch, achieving four output levels: 12V / 24V / 110V / 220V. A voltage regulator circuit is used to regulate the DC power output from a voltage selection circuit. The filter circuit is used to filter the regulated DC power. Output ports are used to output 12V DC, 24V DC, 110V DC and / or 220V DC.

8. A multifunctional emergency operating power supply according to claim 1, characterized in that, The rechargeable single battery is a ternary lithium battery, a lithium iron phosphate battery, or a nickel-cadmium battery.

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