Intelligent maintenance high-frequency switch direct-current power supply system

Abstract

The utility model discloses an intelligent maintenance high-frequency switch direct-current power supply system, and relates to the technical field of electric power supplies. The intelligent maintenance high-frequency switch direct-current power supply system comprises a mains supply module, a charging module, a direct-current bus, a first relay, a first storage battery, a second relay, a feedback module and a main control module, the commercial power module, the charging module, the DC bus, the first relay, the first storage battery, the second relay and the feedback module are connected in sequence; the feedback module is connected with the mains supply module, and the main control module is connected with the first storage battery, the first relay, the second relay, the charging module and the feedback module. When the first storage battery needs discharging maintenance, the main control module controls the first relay to be switched off and the second relay to be switched on, so that electric energy of the first storage battery is converted into alternating current through the feedback module to be fed back to the mains supply module and enter a power grid, and waste of internal electric energy during maintenance of the first storage battery is avoided; and energy recycling and reusing are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power supply, in particular to an intelligent maintenance high-frequency switching direct current power supply system. Background Art

[0002] Batteries are energy storage devices that convert chemical energy into electrical energy and are widely used in various power systems and electronic devices. They can provide backup power when the grid power supply is unstable or outages occur, and they can also store energy.

[0003] While batteries provide immense convenience and reliability for power systems, they require regular maintenance to ensure their performance and longevity. During use, batteries may experience capacity loss, increased internal resistance, and electrolyte depletion. If these issues are not promptly identified and addressed, they can lead to decreased battery performance or even damage. Regular maintenance includes checking battery voltage and current, cleaning battery terminals, replenishing electrolyte, and performing equalization charging to keep batteries in optimal condition.

[0004] However, in the traditional battery maintenance process, load discharge is used to dissipate the battery power, resulting in energy waste. Utility Model Content

[0005] In view of the above technical problems and defects, the purpose of this utility model is to provide an intelligent maintenance high-frequency switching DC power supply system, which can solve the problem of energy waste during battery maintenance.

[0006] To achieve the above objectives, the utility model provides an intelligent maintenance high-frequency switching DC power supply system, including a mains module, a charging module, a DC bus, a first relay, a first battery, a second relay, a feedback module and a main control module; the mains module, the charging module, the DC bus, the first relay, the first battery, the second relay and the feedback module are connected in sequence; the feedback module is connected to the mains module, and the main control module is respectively connected to the first battery, the first relay, the second relay, the charging module and the feedback module.

[0007] The utility module of the present invention obtains utility power from the power grid and transmits it to the charging module. The charging module converts the utility power into direct current (DC) and transmits it to the DC bus. The main control module controls the closing of a first relay, allowing the DC power to charge the first battery. When the main control module detects that the first battery requires discharge maintenance, it controls the opening of the first relay and the closing of the second relay, allowing the first battery's electrical energy to be converted into usable AC power via the feedback module. This power is then fed back to the utility module and into the utility grid. This prevents the internal electrical energy of the first battery from being wasted during maintenance, achieving energy recovery and reuse.

[0008] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system also includes a second battery, a third relay and a fourth relay. The DC bus, the third relay, the second battery, the fourth relay and the feedback module are connected in sequence, and the main control module is connected to the second battery, the third relay and the fourth relay respectively.

[0009] Adopting the technical solutions of the above-described embodiment, by adding a second battery, a third relay, and a fourth relay, the redundancy and flexibility of the intelligently maintained high-frequency switching DC power supply system are enhanced. The addition of the second battery enables the system to maintain stable power output even when the first battery requires maintenance or fails, enhancing system reliability. The addition of the third and fourth relays provides the system with more refined current control capabilities, allowing for more efficient load distribution across the different batteries and optimizing energy efficiency. Furthermore, the parallel connection of the first and second batteries simplifies system scalability, facilitating the future addition of additional batteries as needed.

[0010] In some embodiments, the first battery and the second battery have the same rated voltage.

[0011] The technical solution of the above embodiment sets the rated voltage of the first and second batteries to the same value. This design simplifies the system's charging and maintenance processes. Since the two batteries have the same voltage level, the charging module can charge them uniformly, eliminating the need to design separate charging strategies for batteries of different voltage levels. This not only reduces system design complexity but also reduces maintenance costs. Furthermore, the same rated voltage means that the two batteries can seamlessly switch between each other, improving system flexibility and reliability.

[0012] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes an AC switch connected between the AC power module and the charging module.

[0013] The AC switch introduced in the technical solution of the above embodiment provides an additional safety and control mechanism for the intelligent maintenance high-frequency switching DC power supply system. Positioned between the mains module and the charging module, the AC switch can cut off power when needed, protecting the system from grid failures or abnormal voltages. Furthermore, the AC switch can be used to safely isolate the charging module during system maintenance or testing, ensuring the safety of maintenance personnel. This design enhances system safety and controllability.

[0014] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes a feedback switch connected between the feedback module and the mains module.

[0015] Using the technical solutions of the above embodiments, the regenerative switch provides flexible energy management capabilities for the intelligent maintenance high-frequency switching DC power supply system. Located between the regenerative module and the mains module, the regenerative switch controls whether battery discharge energy is fed back to the grid. When the grid load is low or the battery requires maintenance, opening the regenerative switch allows the system to feed excess power back to the grid, reducing energy waste. Conversely, when the grid load is high or battery energy needs to be conserved, closing the regenerative switch prevents energy regeneration, ensuring efficient system energy utilization.

[0016] In some embodiments, the main control module is used to detect the voltage, current and temperature of the first battery and the second battery.

[0017] Using the technical solutions of the above embodiment, the main control module monitors the voltage, current, and temperature of the first and second batteries, significantly improving the system's monitoring and preventive maintenance capabilities. By monitoring these key parameters in real time, the main control module can predict the battery status and promptly identify potential problems such as overheating, overcharging, or over-discharging, allowing preventive measures to be taken to avoid battery damage. This intelligent monitoring not only improves system reliability but also extends the battery life.

[0018] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes a solar power generation module, which is connected to the first battery and the second battery respectively, and the main control module is connected to the solar power generation module.

[0019] The technical solution of the above embodiment, including the solar power generation module, adds a clean, renewable energy source to the intelligent maintenance high-frequency switching DC power supply system. The connection between the solar power generation module and the battery enables the system to use solar energy to charge the battery, reducing its reliance on the traditional power grid. This design improves the system's environmental friendliness and can significantly reduce energy costs in areas with abundant solar resources.

[0020] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes a wind power generation module, which is connected to the first battery and the second battery respectively, and the main control module is connected to the wind power generation module.

[0021] Using the technical solutions in the above embodiments, the wind power generation module provides an alternative renewable energy option for the intelligently maintained high-frequency switching DC power supply system. Connecting the wind power generation module to a battery allows the system to use wind energy to charge the battery or directly supply power, increasing the system's energy diversity and self-sufficiency. This design enables the system to effectively utilize natural resources in areas with abundant wind resources, improving its sustainability and economic efficiency.

[0022] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes a communication module and a cloud server, and the main control module is connected to the cloud server via the communication module.

[0023] The technical solutions of the above embodiments, through the introduction of a communication module and a cloud server, provide powerful remote monitoring and data analysis capabilities for intelligent maintenance of high-frequency switching DC power supply systems. Through the communication module, the system can upload operating data to the cloud server, enabling remote monitoring and fault diagnosis. This design allows system administrators to access system status from anywhere with an internet connection, improving system manageability and maintenance efficiency.

[0024] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes a user end, which is connected to a cloud server.

[0025] Using the technical solutions of the above embodiments, the connection between the client and the cloud server provides users with an intuitive and convenient interface for managing and monitoring the intelligently maintained high-frequency switching DC power supply system. The client can be an application on a computer, tablet, or smartphone, allowing users to view system status in real time, receive system notifications, and perform remote control. This design improves the user experience and makes system management more flexible and efficient.

[0026] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0027] 1. Improve energy efficiency and reduce waste: The intelligent maintenance high-frequency switching DC power supply system integrates a regenerative module to effectively utilize battery discharge energy. In traditional systems, battery discharge often results in energy waste. However, the regenerative module in this system allows excess energy to be converted and fed back to the grid, reducing energy waste and improving energy efficiency.

[0028] 2. Enhanced system reliability and flexibility: By adding a second battery and ensuring the same rated voltage for both the first and second batteries, system redundancy and flexibility are enhanced. This design allows the two batteries to operate in parallel, increasing energy storage capacity and ensuring stable system operation even if one battery fails or requires maintenance, significantly improving system reliability.

[0029] 3. Intelligent Monitoring and Remote Management: The communication module, cloud server, and user terminal enable intelligent monitoring and remote management of the system. Through the cloud server, system administrators can monitor the power system's operating status in real time, receive real-time notifications and alerts, and perform remote control. User terminal access provides an intuitive user interface, making system management more flexible and efficient, enabling users to easily manage the power system regardless of their location. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are incorporated into and constitute a part of the specification, illustrating embodiments of the present invention and, together with the specification, explaining the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0031] Figure 1 This is a circuit diagram of an intelligent maintenance high-frequency switching DC power supply system according to an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of the connection relationship of a main control module in an embodiment of the present utility model;

[0033] Figure 3 This is a schematic diagram of the connection relationship of another main control module in an embodiment of the present utility model;

[0034] Description of reference numerals:

[0035] 1. AC power module; 2. Charging module; 3. DC bus; 41. First relay; 42. Second relay; 43. Third relay; 44. Fourth relay; 51. First battery; 52. Second battery; 6. Feedback module; 7. Main control module; 81. AC switch; 82. Feedback switch; 91. Solar power generation module; 92. Wind power generation module; 93. Communication module; 94. Cloud server; 95. User end. DETAILED DESCRIPTION

[0036] The terms used in the following embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear contrary indication in the context. It should also be understood that the term "or" used in the present invention refers to and includes any or all possible combinations of one or more listed items. In the following, the terms "first" and "second" are used only for descriptive purposes and are used to distinguish technical features, and cannot be understood as implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present invention, unless otherwise stated, the meaning of "multiple" is two or more.

[0037] It should also be noted that, unless otherwise clearly specified or limited, in the embodiments of the present invention, terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components; it can be a wired communication connection or a wireless communication connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The embodiments of the present invention are described in detail below.

[0038] The present invention provides an intelligent maintenance high-frequency switching DC power supply system. Figure 1 As shown, it includes a mains module 1 , a charging module 2 , a DC bus 3 , a first relay 41 , a first battery 51 , a second relay 42 , a feedback module 6 and a main control module 7 .

[0039] Among them, the AC power module 1, the charging module 2, the DC bus 3, the first relay 41, the first battery 51, the second relay 42 and the feedback module 6 are connected in sequence; the feedback module 6 is connected to the AC power module 1, and the main control module 7 is respectively connected to the first battery 51, the first relay 41, the second relay 42, the charging module 2 and the feedback module 6.

[0040] Using the above design, the AC module 1 of this embodiment obtains AC power from the grid and transmits it to the charging module 2. The charging module 2 converts the AC power into DC power and transmits it to the DC bus 3. The main control module 7 controls the first relay 41 to close, allowing the DC power to charge the first battery 51. When the main control module 7 detects that the first battery 51 requires discharge maintenance, the main control module 7 controls the first relay 41 to open and the second relay 42 to close. This allows the electrical energy of the first battery 51 to be converted into usable AC power through the feedback module 6. This power is then fed back to the AC module 1 and into the AC grid. This prevents the internal energy of the first battery 51 from being wasted during maintenance, thus achieving energy recovery and reuse.

[0041] In this embodiment, the main control module 7 plays a central role in the entire process. It monitors battery parameters such as voltage, current, and temperature in real time, and controls the operating status of the charging module 2 and the feedback module 6 to ensure that the battery is always in optimal condition. Furthermore, the main control module 7 automatically performs balanced charging to optimize battery performance and extend its service life. The entire system is designed to reduce energy waste, improve maintenance efficiency, and enhance power system reliability through intelligent control.

[0042] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system also includes a second battery 52, a third relay 43 and a fourth relay 44. The DC bus 3, the third relay 43, the second battery 52, the fourth relay 44 and the feedback module 6 are connected in sequence, and the main control module 7 is connected to the second battery 52, the third relay 43 and the fourth relay 44 respectively.

[0043] In this embodiment, the introduction of a second battery 52, a third relay 43, and a fourth relay 44 further enhances the flexibility and reliability of the system. The DC bus 3 is first connected to the third relay 43, and then the current flows to the second battery 52, then through the fourth relay 44, and finally reaches the feedback module 6. This design allows the second battery 52 to provide additional power support to the system when needed. The main control module 7 is connected to the second battery 52, the third relay 43, and the fourth relay 44 to achieve intelligent monitoring and control of the second battery 52, including charging, discharging, and status monitoring. The first battery 51 and the second battery 52 are connected in parallel, which means that they share the same voltage level and can work together to provide greater energy storage capacity and redundancy, ensuring that the system can continue to provide stable power supply during peak power demand or emergency situations. This configuration improves the energy efficiency of the system and allows excess power to be fed back to the grid through the feedback module 6 without adding additional load, thereby optimizing energy utilization.

[0044] When the main control module 7 detects that the second battery 52 needs to be discharged for maintenance, the main control module 7 controls the third relay 43 to be disconnected and the fourth relay 44 to be closed, so that the electric energy of the second battery 52 is converted into usable AC power through the feedback module 6, and then fed back to the mains module 1 and enters the mains network. This avoids the internal electric energy of the second battery 52 from being wasted during maintenance and realizes energy recovery and reuse.

[0045] In this embodiment, the first storage battery 51 and the second storage battery 52 have the same rated voltage.

[0046] With this design, since the rated voltages of the two batteries are equal, they can be conveniently connected in parallel to form a unified energy storage unit. The advantage of this is that the system can evenly distribute the load between the two batteries, thereby improving the overall energy storage capacity and power supply stability. In addition, when one battery needs maintenance or replacement, the other battery can continue to provide power, ensuring the continuous operation of the system and enhancing the reliability of the system. At the same time, this design also simplifies the work of the charging module 2, because the charging module 2 can charge two batteries with the same voltage at the same time without having to design different charging strategies for different voltage levels. This unified voltage standard also facilitates system expansion. If more batteries need to be added, as long as their rated voltage is the same as the existing batteries, they can be seamlessly integrated into the system. In summary, the first battery 51 and the second battery 52 have the same rated voltage, which provides the system with the advantages of flexibility, reliability and easy management.

[0047] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes an AC switch 81 , which is connected between the AC power module 1 and the charging module 2 .

[0048] The AC switch 81 primarily controls the power supply from the AC power module 1 to the charging module 2. When the AC switch 81 is off, the AC power module 1 stops supplying power to the charging module 2. This can be used to cut power to ensure safety during system maintenance or troubleshooting. Conversely, when the AC switch 81 is on, the AC power module 1 begins supplying power to the charging module 2, which then converts the AC power to DC power for charging the battery.

[0049] Furthermore, AC switch 81 can automatically control power supply based on grid stability and demand. For example, during periods of grid voltage instability or peak power demand, the system can suspend charging by turning off AC switch 81 to reduce the burden on the grid or prevent excessive power consumption during periods of power shortage. When the grid stabilizes or power demand decreases, charging can be resumed by turning on AC switch 81.

[0050] This intelligent control mechanism not only improves the system's flexibility and adaptability, but also helps optimize energy efficiency, reduce unnecessary energy waste, and ensure safe and efficient battery charging under various grid conditions. In this way, the system can better adapt to different power environments and provide users with more reliable power support.

[0051] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes a feedback switch 82 , which is connected between the feedback module 6 and the mains module 1 .

[0052] The main function of the feedback switch 82 is to control the energy feedback path during the battery discharge process.

[0053] During maintenance, when the first battery 51 or the second battery 52 needs to be discharged, the excess electrical energy can be converted into AC power by the feedback module 6, and then sent back to the mains module 1 through the feedback switch 82, and finally fed back to the power grid.

[0054] The provision of regenerative switch 82 allows the system to feed electrical energy back to the grid when needed, enabling energy reuse and reducing energy waste. For example, during periods of low electricity demand, or when the electricity generated by solar power generation module 91 and wind power generation module 92 exceeds system demand, the battery can store excess energy. During periods of high electricity demand, the battery can release the stored energy back to the grid via regenerative switch 82, helping to balance the grid load.

[0055] Furthermore, the regenerative switch 82 provides a safety mechanism, allowing the system to disconnect the regenerative path if a grid fault or anomaly is detected, protecting the battery and grid from damage. This intelligent control not only improves energy efficiency but also enhances system reliability and safety, allowing the DC power system to more flexibly adapt to varying power demands and grid conditions.

[0056] In some embodiments, the main control module 7 is used to detect the voltage, current and temperature of the first battery 51 and the second battery 52 .

[0057] The main control module 7 can monitor and control in real time the key parameters of the first storage battery 51 and the second storage battery 52. The main control module 7 can accurately detect the voltage, current and temperature of the two storage batteries through built-in sensors.

[0058] Voltage monitoring ensures that the battery operates within a safe and effective voltage range, preventing overcharging or undercharging, both of which can cause battery performance degradation or damage. Current monitoring helps the main control module 7 understand the battery's charge and discharge status, as well as changes in system load, so that it can intelligently adjust the charging strategy and discharge process to optimize battery life and overall system performance.

[0059] Temperature monitoring is another key function, as operating the battery at temperatures that are too high or too low can affect its performance and even pose a safety risk. By monitoring the battery temperature, the main control module 7 can activate cooling or heating mechanisms to maintain the battery within the optimal operating temperature range.

[0060] Through these monitoring functions, the main control module 7 can assess the battery status in real time, predict the battery's health, and take preventive measures when necessary, such as equalizing charging or limiting the charge and discharge rate, to protect the battery from damage. This intelligent monitoring and management not only improves battery efficiency, but also extends the battery life, ensuring stable and reliable system operation.

[0061] In some embodiments, as Figure 2 As shown, the intelligent maintenance high-frequency switching DC power supply system further includes a solar power generation module 91 , which is connected to the first storage battery 51 and the second storage battery 52 respectively, and the main control module 7 is connected to the solar power generation module 91 .

[0062] The integrated solar power generation module 91 in this embodiment provides a sustainable energy supplement for the system. The solar module converts sunlight into electrical energy, which can be directly stored in the first and second batteries 51 and 52 or supplied directly to the system when needed. This design enables the system to maximize the use of renewable energy under conditions of ample sunlight, reducing its reliance on the traditional power grid.

[0063] The connection between solar power module 91 and two batteries ensures efficient utilization of the electricity converted from solar energy. When the energy generated by solar power module 91 exceeds the system's immediate needs, the excess energy can be stored in the batteries for future use. Conversely, when the solar power module 91's production capacity is insufficient, the batteries can provide the required power, ensuring continuous system operation.

[0064] The connection between main control module 7 and solar power generation module 91 enables main control module 7 to monitor the power generation status of solar power generation module 91 in real time, including power generation efficiency and output. Main control module 7 can intelligently adjust the battery charging strategy based on the output of solar power generation module 91 to optimize energy utilization efficiency. Furthermore, main control module 7 can pre-plan energy management strategies based on weather conditions and forecast data to maximize solar energy utilization.

[0065] The design of the integrated solar power generation module 91 not only improves the energy self-sufficiency of the system, but also enhances the environmental friendliness and sustainability of the system, providing users with a greener and more efficient power solution.

[0066] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes a wind power generation module 92 , which is connected to the first battery 51 and the second battery 52 respectively, and the main control module 7 is connected to the wind power generation module 92 .

[0067] This embodiment further enhances the system's renewable energy utilization capabilities by integrating a wind power generation module 92. The wind power generation module 92 utilizes wind power to drive a generator, converting wind energy into electrical energy, which can be directly supplied to the system or stored in the first and second batteries 51 and 52.

[0068] The connection between wind power module 92 and two batteries ensures efficient utilization of wind-generated electricity. When the energy generated by wind power module 92 exceeds the system's immediate needs, the excess energy can be stored in the batteries for future use. Conversely, when wind power module 92's output is insufficient, the batteries can provide the required power, ensuring continuous system operation.

[0069] The connection between main control module 7 and wind power generation module 92 enables main control module 7 to monitor the power generation status of wind power generation module 92 in real time, including power generation efficiency and output. Main control module 7 can intelligently adjust the battery charging strategy based on the output of wind power generation module 92 to optimize energy utilization efficiency. Furthermore, main control module 7 can pre-plan energy management strategies based on wind power forecast data to maximize wind energy utilization.

[0070] The design of this integrated wind power generation module 92 not only improves the energy self-sufficiency of the system, but also enhances the environmental friendliness and sustainability of the system, providing users with a greener and more efficient power solution.

[0071] In some embodiments, as Figure 3 As shown, the intelligent maintenance high-frequency switching DC power supply system further includes a communication module 93 and a cloud server 94 , and the main control module 7 is connected to the cloud server 94 via the communication module 93 .

[0072] Communication module 93 and cloud server 94 provide remote monitoring and data management capabilities for the system. Serving as a bridge between the system and the outside world, communication module 93 is responsible for transmitting data collected by main control module 7, such as battery status and the output of solar power module 91 and wind power module 92, to cloud server 94 via wireless or wired networks.

[0073] Cloud server 94 serves as the data storage and processing center, receiving, storing, and analyzing data from communication module 93. Through cloud server 94, system administrators can remotely monitor the power system's status and gain real-time insights into system operations, including battery voltage, current, and temperature, as well as the efficiency of renewable energy generation modules. Furthermore, cloud server 94 can perform predictive analysis based on collected data, forecasting future energy demand and power generation module production capacity, helping to optimize energy management strategies.

[0074] This remote monitoring and data analysis capability makes the intelligent maintenance high-frequency switching DC power supply system more intelligent and automated. System administrators can access system data through cloud server 94 from anywhere with an internet connection to perform fault diagnosis and maintenance, significantly improving system maintenance efficiency and responsiveness. Cloud server 94 also supports remote updates and upgrades of system software, ensuring the system always maintains the latest technical status. Through the integration of communication module 93 and cloud server 94, the intelligent maintenance high-frequency switching DC power supply system achieves truly intelligent and networked management.

[0075] In some embodiments, the intelligent maintenance high-frequency switching DC power supply system further includes a user terminal 95 , which is connected to a cloud server 94 .

[0076] The client 95 provides an intuitive and convenient interface for users to interact with the cloud server 94. The client 95 can be an application on a computer, tablet or smart phone, which is connected to the cloud server 94 via the Internet, allowing users to access system information anytime and anywhere.

[0077] Through the user terminal 95, users can view the system's operating status in real time, including the battery charge, voltage, and temperature, as well as the real-time output of the solar and wind power generation modules 92. The user terminal 95 also provides a historical data query function, allowing users to analyze the system's energy usage and performance trends over a period of time.

[0078] In addition, the user terminal 95 can receive real-time notifications and alerts about system status, such as abnormal battery voltage and power module failure, ensuring that users can promptly understand and address potential problems. Users can also remotely control certain power system functions through the user terminal 95, such as starting or stopping charging and adjusting the operating mode of the power module.

[0079] This design not only improves the user experience but also enhances the manageability and operability of the system. The connection between the user terminal 95 and the cloud server 94 makes the intelligent maintenance high-frequency switching DC power supply system more intelligent and user-friendly, providing users with an efficient and convenient power management solution.

[0080] In some embodiments, when the intelligent maintenance high-frequency switching DC power supply system is operating normally, the first battery 51 and the second battery 52 operate in parallel, and the main control module 7 is set to maintain the batteries once every year.

[0081] (1) The first battery 51 is in maintenance mode:

[0082] When the main control module 7 reaches one year, it enters maintenance mode. The main control module 7 controls the first relay 41 to open, disconnecting the first battery 51 from charging. The main control module 7 controls the second relay 42 to close, and the main control module 7 controls the feedback module 6 to power on. The feedback module 6 discharges the first battery 51 and outputs the power back to the grid to the mains module 1. When the discharge maintenance of the first battery 51 is complete, the main control module 7 controls the feedback module 6 to shut down, and the main control module 7 controls the second relay 42 to open, completing the discharge maintenance of the first battery 51. The main control module 7 controls the third relay 43 to open, and the first relay 41 to close. After the charging module 2 completes charging the first battery 51, the maintenance mode for the first battery 51 is complete.

[0083] (2) Second battery 52 maintenance mode:

[0084] After the maintenance mode of the first battery 51 is completed. At this time, the second battery 52 is disconnected from the DC bus 3, the main control module 7 controls the fourth relay 44 to close, the main control module 7 controls the feedback module 6 to start up, and the feedback module 6 discharges the second battery 52 and outputs the grid feedback to the mains module 1. When the discharge maintenance of the second battery 52 is completed, the main control module 7 controls the feedback module 6 to shut down, the main control module 7 controls the fourth relay 44 to disconnect, and the discharge maintenance of the second battery 52 is completed. The main control module 7 controls the first relay 41 to disconnect and controls the third relay 43 to close. After the charging module 2 completes charging of the first battery 51, the maintenance mode of the second battery 52 is completed. When the second battery 52 is fully charged, the main control module 7 controls the first relay 41 to close, and the two groups of batteries work normally in parallel.

[0085] As a further improvement, in the case of abnormal operation of the intelligent maintenance high-frequency switching DC power supply system of this embodiment:

[0086] (1) Abnormality of the first storage battery 51:

[0087] If the first battery 51 malfunctions, the main control module 7 controls the first relay 41 to disconnect and issue an alarm. However, the system maintains the normal operation of the second battery 52 to ensure system reliability. After the first battery 51 malfunction is resolved, the main control module 7 determines whether to operate in parallel based on the data from the first and second batteries 51, 52. If the voltages of the two battery groups are the same, the main control module 7 controls the first relay 41 to close, and the two battery groups operate in parallel.

[0088] (2) Abnormality of the second storage battery 52:

[0089] If the second battery 52 malfunctions, the main control module 7 controls the third relay 43 to disconnect and issue an alarm. However, the system maintains the normal operation of the first battery 51 to ensure system reliability. After the fault in the second battery 52 is resolved, the main control module 7 determines whether to operate in parallel based on the data from the first and second batteries 51, 52. If the voltages of the two battery groups are the same, the main control module 7 controls the third relay 43 to close, and the two battery groups operate in parallel.

[0090] This embodiment enables automatic battery discharge maintenance, reducing reliance on specialized engineers and lowering operating costs. Because the batteries discharge and feed back into the grid, they can be used sustainably, conserving resources. With two battery banks operating in parallel, a single battery failure will not affect system operation, improving system reliability.

[0091] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An intelligent maintenance high-frequency switching DC power supply system, characterized in that: The system comprises a mains module, a charging module, a DC bus, a first relay, a first battery, a second relay, a feedback module and a main control module; the mains module, the charging module, the DC bus, the first relay, the first battery, the second relay and the feedback module are connected in sequence; the feedback module is connected to the mains module, and the main control module is respectively connected to the first battery, the first relay, the second relay, the charging module and the feedback module.

2. The intelligent maintenance high-frequency switching DC power supply system according to claim 1, characterized in that: It also includes a second battery, a third relay and a fourth relay. The DC bus, the third relay, the second battery, the fourth relay and the feedback module are connected in sequence, and the main control module is connected to the second battery, the third relay and the fourth relay respectively.

3. The intelligent maintenance high-frequency switching DC power supply system according to claim 2, characterized in that: The first battery and the second battery have the same rated voltage.

4. The intelligent maintenance high-frequency switching DC power supply system according to claim 1, characterized in that: It also includes an AC switch, which is connected between the mains power module and the charging module.

5. The intelligent maintenance high-frequency switching DC power supply system according to claim 1, characterized in that: It also includes a feedback switch, which is connected between the feedback module and the mains power module.

6. The intelligent maintenance high-frequency switching DC power supply system according to any one of claims 1 to 5, characterized in that: The main control module is used to detect the voltage, current and temperature of the first battery and the second battery.

7. The intelligent maintenance high-frequency switching DC power supply system according to claim 1, characterized in that: It also includes a solar power generation module, which is connected to the first storage battery and the second storage battery respectively, and the main control module is connected to the solar power generation module.

8. The intelligent maintenance high-frequency switching DC power supply system according to claim 1, characterized in that: It also includes a wind power generation module, which is connected to the first battery and the second battery respectively, and the main control module is connected to the wind power generation module.

9. The intelligent maintenance high-frequency switching DC power supply system according to claim 1, characterized in that: It also includes a communication module and a cloud server, and the main control module is connected to the cloud server through the communication module.

10. The intelligent maintenance high-frequency switching DC power supply system according to claim 9, characterized in that: It also includes a user terminal, which is connected to the cloud server.

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