High-isolation power supply device

Abstract

The utility model relates to the technical field of power supplies, in particular to a high-isolation power supply device, which comprises an input module, a low-isolation output module and a high-isolation output module, the input module is respectively connected with the low-isolation output module and the high-isolation output module, and the high-isolation output module is connected with the low-isolation output module and the high-isolation output module. A high-isolation transformer is arranged between the high-isolation output module and the input module; the low-isolation output module comprises a first voltage conversion circuit, a first power supply priority control module and a first alarm device; the high-isolation output module comprises a second voltage conversion circuit, a second power supply priority control module and a second alarm device; an insulating material is arranged between the high-isolation output module and the shell, and the insulating withstand voltage of the insulating material is not lower than 21KV. Through modular design, high voltage-resistant insulation and intelligent priority control, breakthrough of safety, reliability and localization of power supply equipment is realized, and the power supply equipment can be further suitable for fields with strict requirements on power supplies.

Description

Technical Field

[0001] This utility model relates to the field of power supply technology, specifically to a high-isolation power supply device. Background Technology

[0002] With the rapid development of electronic technology, various devices are placing increasingly stringent performance requirements on power supply units, especially in terms of isolation performance, power supply flexibility, and stability. Inadequate isolation performance is a prominent issue in existing power supply units. Many traditional power supply units employ simple isolation measures, which cannot meet the demands for high isolation. Electrical interference easily occurs between the input and output, leading to unstable power output and making it difficult to meet the purity and stability requirements of high-precision equipment such as medical devices and industrial automation control systems.

[0003] In terms of voltage conversion, existing power supply modules have limited functionality and cannot effectively convert different input types. For AC and DC power inputs of different voltage levels, traditional power supply devices struggle to efficiently convert them into suitable output voltages, resulting in poor versatility and an inability to adapt to complex and ever-changing power supply scenarios.

[0004] Regarding power supply priority control, existing power supply devices cannot rationally allocate power when multiple input power sources are present simultaneously, easily leading to power supply chaos. This prevents some devices from obtaining the required power, reducing the reliability and stability of the power supply device and affecting the normal operation of the equipment.

[0005] In summary, existing power supply devices have many shortcomings in terms of isolation performance, voltage conversion, power supply control, and insulation, making it difficult to meet the diverse application needs of today. Therefore, there is an urgent need for a high-isolation power supply device to solve the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned technical problems in the prior art, this utility model provides a high-isolation power supply device. Through modular design, high withstand voltage insulation and intelligent priority control, it achieves breakthroughs in the safety, reliability and localization of power supply equipment, and can be applied to fields with stringent power requirements.

[0007] To achieve the above objectives, this utility model provides a high-isolation power supply device, comprising: an input module, a low-isolation output module, and a high-isolation output module. The input module is connected to both the low-isolation and high-isolation output modules, and a high-isolation transformer is disposed between the high-isolation output module and the input module. The input module includes an AC380V input interface, a DC24V input interface, and a battery input interface. The low-isolation output module includes a first voltage conversion circuit, a first power supply priority control module, and a first alarm device. The high-isolation output module includes a second voltage conversion circuit, a second power supply priority control module, and a second alarm device. An insulating material is disposed between the high-isolation output module and the housing, and the insulation withstand voltage of the insulating material is not less than 21KV.

[0008] Preferably, the first voltage conversion circuit includes: a first low-isolation voltage conversion module connected to the AC380V input interface, used to output AC380V as DC27V low-isolation voltage; a second low-isolation voltage conversion module connected to the DC24V input interface, used to output the DC24V as a corresponding DC low-isolation voltage; and a third low-isolation voltage conversion module connected to the battery input interface, used to output the battery voltage as a corresponding battery low-isolation voltage. The second voltage conversion circuit includes: a first high-isolation voltage conversion module connected to the AC380V input interface, used to output AC380V as DC27V high-isolation voltage; a second high-isolation voltage conversion module connected to the DC24V input interface, used to boost the DC24V output as a corresponding DC high-isolation voltage; and a third high-isolation voltage conversion module connected to the battery input interface, used to boost the battery voltage output as a corresponding battery high-isolation voltage.

[0009] Preferably, the first low-isolation voltage conversion module includes: a three-phase PFC module connected to the AC380V input interface, used to convert AC380V to DC370V output; a DC-DC module connected to the three-phase PFC module and the first power supply priority control module, used to convert DC370V to DC27V low-isolation voltage output to the first power supply priority control module; the second low-isolation voltage conversion module includes a filter circuit connected to the first power supply priority control module, used to perform a filtering operation, outputting the filtered DC24V to the first power supply priority control module; the third low-isolation voltage conversion module includes a voltage regulator module connected to the first power supply priority control module, used to perform a voltage regulation operation, outputting the regulated battery voltage to the first power supply priority control module.

[0010] Preferably, the second voltage conversion circuit includes: a half-bridge module connected to the three-phase PFC module and the high-isolation transformer, used to output DC370V to the high-isolation transformer; the high-isolation transformer connected to a first BUCK module, used to convert DC370V to DC48V and output it to the first BUCK module; the first BUCK module connected to a second power supply priority control module, used to convert the DC48V voltage to DC27V high-isolation voltage and output it to the second power supply priority control module; the second high-isolation voltage conversion module includes: a first BOOST boost circuit connected to the DC24V input interface, used to boost the DC24V voltage and output it to the first full-bridge module; the first full-bridge module connected to the first BOOST boost circuit and the high-isolation transformer, used to output the boosted DC voltage to the high-isolation transformer; the high-isolation transformer connected to a second BUCK module, the high-isolation... The transformer is also used to convert the boosted DC voltage to DC48V and output it to the second BUCK module; the second BUCK module is connected to the second power supply priority control module and is used to step down the DC48V to DC25.5V and output it to the second power supply priority control module; the third high isolation voltage conversion module includes: a second BOOST boost circuit connected to the battery input interface, used to boost the battery voltage and output it to the second full-bridge module; the second full-bridge module is connected to the second BOOST boost circuit and the high isolation transformer, used to output the boosted battery voltage to the high isolation transformer; the high isolation transformer is connected to the third BUCK module, and the high isolation transformer is also used to convert the boosted battery voltage to DC48V and output it to the third BUCK module; the third BUCK module is connected to the second power supply priority control module and is used to step down the DC48V to 23.5V and output it to the second power supply priority control module.

[0011] Preferably, the first power supply priority control module includes a first diode, a second diode, and a third diode connected in parallel. The first diode is connected to the DC-DC module, the second diode is connected to the filter circuit, and the third diode is connected to the voltage regulator module. The output terminals of the first diode, the second diode, and the third diode are all connected to a low-isolation output interface. The second power supply priority control module includes a fourth diode, a fifth diode, and a sixth diode connected in parallel. The fourth diode is connected to the first BUCK module, the fifth diode is connected to the second BUCK module, and the sixth diode is connected to the third BUCK module. The output terminals of the fourth diode, the fifth diode, and the sixth diode are all connected to a high-isolation output interface.

[0012] Preferably, the battery input interface is connected to the charging circuit, the charging circuit is connected to the preset low-power module, and the preset low-power module is connected to the DC-DC module and the filter circuit.

[0013] Preferably, the insulating material is composed of a combination of ceramic, FR4 board and high voltage-resistant output cable.

[0014] Preferably, the high isolation transformer is model AMT21 / 0.4kV-500kVA.

[0015] Preferably, the first power supply priority control module further includes a first voltage detection device connected in parallel, the second power supply priority control module further includes a second voltage detection device connected in parallel, and the third voltage detection device is connected to the DC-DC module and the filter circuit.

[0016] The present invention provides at least the following technical effects through the technical solution provided:

[0017] High isolation between the input module and the output module is achieved through a high-isolation transformer, effectively reducing electrical interference and improving power output stability, thus providing reliable power support for demanding equipment. Furthermore, the input module includes AC380V, DC24V, and battery input interfaces, significantly enhancing the power supply's versatility and allowing for flexible use in various power supply scenarios. In addition, insulation material with a withstand voltage of at least 21KV is used between the high-isolation output module and the casing, further enhancing the power supply's safety.

[0018] Other features and advantages of this utility model embodiment will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a circuit diagram of a high-isolation power supply device provided in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Input Module, 101-AC380V Input Interface, 102-DC24V Input Interface, 103-Battery Input Interface, 2-Low Isolation Output Module, 201-First Voltage Conversion Circuit, 2011-DC-DC Module, 2012-Filter Circuit, 2013-Voltage Regulator Module, 202-First Power Supply Priority Control Module, 2021-First Diode, 2022-Second Diode, 2023-Third Diode, 203-Low Isolation Output Interface, 3-High Isolation Output Module, 301-Second Voltage Conversion Circuit, 3011-Half-Bridge Module, 3 012-High isolation transformer, 3013-First BUCK module, 3014-First BOOST boost circuit, 3015-First full-bridge module, 3016-Second BUCK module, 3017-Second BOOST boost circuit, 3018-Third BUCK module, 302-Second power supply priority control module, 3021-Fourth diode, 3022-Fifth diode, 3023-Sixth diode, 303-High isolation output interface, 4-Three-phase PFC module, 5-Charging circuit, 6-Preset low-power module, 7-Third voltage detection device. Detailed Implementation

[0023] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0024] In this embodiment of the invention, the terms "system" and "network" are used interchangeably. "Multiple" refers to two or more; therefore, in this embodiment, "multiple" can also be understood as "at least two." "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / ", unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship. Furthermore, it should be understood that in the description of this embodiment of the invention, words such as "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or order.

[0025] Insufficient isolation performance is a prominent issue in existing power supply devices. Many power supply devices fail to meet high isolation requirements, easily leading to electrical interference between input and output. This results in unstable power output and an inability to provide reliable power to devices with high isolation requirements. Furthermore, the limited input options, supporting only one or two input types, make it difficult to adapt to complex and varied power supply scenarios, thus restricting the application range of these power supply devices.

[0026] Please see Figure 1 This utility model provides a high-isolation power supply device, which includes: an input module 1, a low-isolation output module 2, and a high-isolation output module 3. The input module 1 is connected to both the low-isolation output module 2 and the high-isolation output module 3. A high-isolation transformer 3012 is provided between the high-isolation output module 3 and the input module 1. The input module 1 includes an AC380V input interface 101, a DC24V input interface 102, and a battery input interface 103. The low-isolation output module 2 includes a first voltage conversion circuit 201, a first power supply priority control module 202, and a first alarm device. The high-isolation output module 3 includes a second voltage conversion circuit 301, a second power supply priority control module 302, and a second alarm device. An insulating material is provided between the high-isolation output module 3 and the housing, and the insulation withstand voltage of the insulating material is not less than 21KV.

[0027] In one possible embodiment, the power supply unit integrates an input module 1, a low-isolation output module 2, and a high-isolation output module 3 within its housing. The input module 1 serves as the power input hub, connected to both the low-isolation output module 2 and the high-isolation output module 3, receiving power from the AC380V input interface 101, the DC24V input interface 102, and the battery input interface 103. A high-isolation transformer 3012 is installed between the high-isolation output module 3 and the input module 1 to achieve electrical isolation. The space between the high-isolation output module 3 and the housing is filled with an insulating material composed of ceramic, FR4 substrate, and high-voltage output cables, ensuring an insulation withstand voltage of at least 21KV for safe operation.

[0028] The first voltage conversion circuit 201 of the low-isolation output module 2 and the second voltage conversion circuit 301 of the high-isolation output module 3 are respectively equipped with corresponding voltage conversion modules for the AC380V input interface 101, the DC24V input interface 102, and the battery input interface 103. This enables the power supply to adapt to various input power types and convert them into corresponding low-isolation or high-isolation output voltages, greatly improving the versatility and applicability of the power supply and meeting the different voltage requirements of different devices.

[0029] Existing power supply units have limited voltage conversion modules that cannot effectively convert input types, making it difficult to meet diverse voltage output requirements. They cannot efficiently convert different input power sources, such as AC and DC, or power sources of different voltage levels, to suitable output voltages, resulting in poor versatility of the power supply unit.

[0030] In an embodiment of this utility model, the first voltage conversion circuit 201 includes: a first low isolation voltage conversion module connected to the AC380V input interface 101, used to output AC380V as DC27V low isolation voltage; a second low isolation voltage conversion module connected to the DC24V input interface 102, used to output the DC24V as a corresponding DC low isolation voltage; and a third low isolation voltage conversion module connected to the battery input interface 103, used to output the battery voltage as a corresponding battery low isolation voltage. The second voltage conversion circuit 301 includes: a first high isolation voltage conversion module connected to the AC380V input interface 101, used to output AC380V as DC27V high isolation voltage; a second high isolation voltage conversion module connected to the DC24V input interface 102, used to boost the DC24V output as a corresponding DC high isolation voltage; and a third high isolation voltage conversion module connected to the battery input interface 103, used to boost the battery voltage output as a corresponding battery high isolation voltage.

[0031] The first voltage conversion circuit 201 of the low-isolation output module and the second voltage conversion circuit 301 of the high-isolation output module are respectively equipped with corresponding voltage conversion modules for the AC380V input interface 101, the DC24V input interface 102, and the battery input interface 103. This enables the power supply to adapt to various input power types and convert them into corresponding low-isolation or high-isolation output voltages, greatly improving the versatility and applicability of the power supply and meeting the different voltage requirements of different devices.

[0032] Existing low-isolation voltage conversion modules lack precise processing of AC380V, DC24V, and battery voltages, and lack targeted conversion and processing circuits. For example, the conversion efficiency for AC380V is low, the filtering effect is poor when DC24V is input, and the battery voltage regulation is unstable, resulting in poor output voltage quality and affecting the overall performance of the power supply unit.

[0033] In an embodiment of this utility model, the first low isolation voltage conversion module includes: a three-phase PFC module 4, connected to the AC380V input interface 101, for converting AC380V to DC370V output; a DC-DC module 2011, connected to the three-phase PFC module 4 and the first power supply priority control module 202, for converting DC370V to DC27V low isolation voltage output to the first power supply priority control module 202; the second low isolation voltage conversion module includes a filter circuit 2012, connected to the first power supply priority control module 202, for performing a filtering operation and outputting the filtered DC24V to the first power supply priority control module 202; the third low isolation voltage conversion module includes a voltage regulator module 2013, connected to the first power supply priority control module 202, for performing a voltage regulation operation and outputting the regulated battery voltage to the first power supply priority control module 202.

[0034] In one possible embodiment, in the first low-isolation voltage conversion module, the three-phase PFC module 4 is connected to the AC380V input interface 101, converting AC380V to DC370V output; the DC-DC module 2011 is connected to the three-phase PFC module 4 and the first power supply priority control module 202, converting DC370V to DC27V low-isolation voltage output to the first power supply priority control module 202. The filter circuit 2012 of the second low-isolation voltage conversion module is connected to the first power supply priority control module 202, filtering DC24V and outputting the filtered DC24V to the first power supply priority control module 202. The voltage regulator module 2013 of the third low-isolation voltage conversion module is connected to the first power supply priority control module 202, regulating the battery voltage and outputting the regulated battery voltage to the first power supply priority control module 202.

[0035] Specialized processing modules were designed for different input voltages. The three-phase PFC module 4 efficiently converts AC380V to DC370V, and the DC-DC module 2011 further converts it to a low-isolation DC27V voltage, improving conversion efficiency. The filter circuit 2012 filters the DC24V, and the voltage regulator module 2013 regulates the battery voltage, ensuring the stability and purity of the output voltage and improving the performance of the power supply unit.

[0036] Existing high-isolation voltage conversion circuits suffer from low conversion efficiency and inaccurate voltage regulation during the voltage conversion process. They cannot efficiently boost or buck the input voltage to the required high isolation voltage, and the stability of the output voltage is difficult to guarantee, thus failing to meet the needs of equipment with strict requirements for high isolation voltage.

[0037] In an embodiment of this utility model, the second voltage conversion circuit 301 includes: a half-bridge module 3011 connected to the three-phase PFC module 4 and the high isolation transformer 3012, used to output DC370V to the high isolation transformer 3012; the high isolation transformer 3012 connected to the first BUCK module 3013, used to convert DC370V to DC48V and output it to the first BUCK module 3013; the first BUCK module 3013 connected to the second power supply priority control module 302, used to convert the DC48V to DC48V and output it to the first BUCK module 3013; the first BUCK module 3013 connected to the second power supply priority control module 302, used to convert the DC48V to DC48V and output it to the first BUCK module 3013. The DC 24V input voltage is converted to a DC 27V high-isolation voltage and output to the second power supply priority control module 302. The second high-isolation voltage conversion module includes: a first BOOST boost circuit 3014, connected to the DC 24V input interface, for boosting the DC 24V voltage and outputting it to the first full-bridge module 3015; the first full-bridge module 3015, connected to the first BOOST boost circuit 3014 and the high-isolation transformer 3012, for outputting the boosted DC voltage to the high-isolation transformer 3012; the high-isolation transformer 3012 is connected to the second BUCK module 3016. The high isolation transformer 3012 is further used to convert the boosted DC voltage into DC48V and output it to the second BUCK module 3016; the second BUCK module 3016 is connected to the second power supply priority control module 302 and is used to step down the DC48V to DC25.5V and output it to the second power supply priority control module 302; the third high isolation voltage conversion module includes: a second BOOST boost circuit 3017 connected to the battery input interface 103, used to boost the battery voltage and output it to the second full-bridge module 3019; the second full-bridge module 3019, and... The second BOOST boost circuit 3017 is connected to the high isolation transformer 3012, and is used to output the boosted battery voltage to the high isolation transformer 3012; the high isolation transformer 3012 is connected to the third BUCK module 3018, and the high isolation transformer 3012 is also used to convert the boosted battery voltage to DC48V and output it to the third BUCK module 3018; the third BUCK module 3018 is connected to the second power supply priority control module 302, and is used to step down the DC48V to 23.5V and output it to the second power supply priority control module 302.

[0038] In one possible embodiment, in the second voltage conversion circuit 301, the half-bridge module 3011 is connected to the three-phase PFC module 4 and the high isolation transformer 3012, outputting DC370V to the high isolation transformer 3012; the high isolation transformer 3012 is connected to the first BUCK module 3013, converting DC370V to DC48V and outputting it to the first BUCK module 3013; the first BUCK module 3013 converts the DC48V voltage to DC27V high isolation voltage and outputs it to the second power supply priority control module 302. In the second high isolation voltage conversion module, the first BOOST boost circuit 3014 is connected to the DC24V input interface 102, boosting the DC24V output to the first full-bridge module 3015; the first full-bridge module 3015 is connected to the first BOOST boost circuit 3014 and the high isolation transformer 3012, boosting the DC voltage output to the high isolation transformer 3012; the high isolation transformer 3012 is connected to the second BUCK module 3016, converting the boosted DC voltage to DC48V output to the second BUCK module 3016; the second BUCK module 3016 step-down the DC48V to DC25.5V output to the second power supply priority control module 302. In the third high isolation voltage conversion module, the second BOOST boost circuit 3017 is connected to the battery input interface 103 to boost the battery voltage and output it to the second full-bridge module 3019; the second full-bridge module 3019 is connected to the second BOOST boost circuit 3017 and the high isolation transformer 3012 to output the boosted battery voltage to the high isolation transformer 3012; the high isolation transformer 3012 is connected to the third BUCK module 3018 to convert the boosted battery voltage to DC48V and output it to the third BUCK module 3018; the third BUCK module 3018 steps down the DC48V to 23.5V and outputs it to the second power supply priority control module 302.

[0039] The second voltage conversion circuit 301, designed for different input voltages, utilizes a combination of circuits including a half-bridge module 3011, a boost circuit, and a full-bridge module, along with a high-isolation transformer 3012 and a BUCK module, to achieve efficient voltage conversion and precise voltage regulation. It can boost or buck different input voltages to convert them into a stable, high-isolation voltage output, meeting the power supply requirements of demanding equipment.

[0040] Existing power supply devices have shortcomings in power supply priority control. When multiple input power sources are present at the same time, they cannot allocate power reasonably, which can easily lead to power supply chaos. This can cause some devices to be unable to obtain the required power, affecting the reliability and stability of the power supply device.

[0041] In an embodiment of this utility model, the first power supply priority control module 202 includes a first diode 2021, a second diode 2022, and a third diode 2023 connected in parallel. The first diode 2021 is connected to the DC-DC module 2011, the second diode 2022 is connected to the filter circuit 2012, and the third diode 2023 is connected to the voltage regulator module 2013. The output terminals of the first diode 2021, the second diode 2022, and the third diode 2023 are all connected to the low isolation output interface 203. The second power supply priority control module 302 includes a fourth diode 3021, a fifth diode 3022, and a sixth diode 3023 connected in parallel. The fourth diode 3021 is connected to the first BUCK module 3013, the fifth diode 3022 is connected to the second BUCK module 3016, and the sixth diode 3023 is connected to the third BUCK module 3018. The output terminals of the fourth diode 3021, the fifth diode 3022, and the sixth diode 3023 are all connected to the high isolation output interface 303.

[0042] By setting up a first power supply priority control module 202 and a second power supply priority control module 302, priority control of the output power of different input power sources is achieved using parallel diodes. This ensures that power is rationally allocated under multiple input power source conditions, prioritizing the use of more stable and suitable power sources, guaranteeing stable power output from the output interface, and improving the reliability of the power supply device.

[0043] In existing power supply devices, the connection between the battery input interface 103 and other modules is not reasonable enough, and there is a lack of effective management for battery charging and low-power module power supply. This prevents the battery from being properly charged during operation and also hinders the full utilization of battery energy to power low-power modules, resulting in energy waste and reduced energy efficiency of the power supply device.

[0044] In an embodiment of this utility model, the battery input interface 103 is connected to the charging circuit 5, the charging circuit 5 is connected to the preset low-power module 6, and the preset low-power module 6 is connected to the DC-DC module 2011 and the filter circuit 2012.

[0045] In one possible embodiment, after the battery input interface 103 is connected to the power supply device, it is connected to the charging circuit 5. The charging circuit 5 charges the battery according to its state. The charging circuit 5 is also connected to a preset low-power module 6. When the battery has power and meets the requirements of the preset low-power module 6, it supplies power to the preset low-power module 6. The preset low-power module 6 is connected to the DC-DC module 2011 and the filter circuit 2012 to achieve reasonable allocation and utilization of electrical energy, improving energy efficiency.

[0046] By connecting the battery input interface 103 to the charging circuit 5, the charging circuit 5 to the preset low-power module 6, and the preset low-power module 6 to the DC-DC module 2011 and the filter circuit 2012, battery charging management is achieved. Simultaneously, battery energy is rationally utilized to power the preset low-power module 6, improving energy efficiency, extending battery life, and enhancing the practicality of the power supply device.

[0047] Existing power supply devices have shortcomings in the selection and application of insulation materials, failing to provide sufficiently high insulation withstand voltage and thus unable to meet the safety requirements of high-isolation power supply devices. In high-voltage, high-isolation operating environments, insulation failure is prone to occur, leading to safety accidents.

[0048] In an embodiment of this utility model, the insulating material is composed of a combination of ceramic, FR4 board and high voltage-resistant output cable.

[0049] In one possible embodiment, an insulating material composed of ceramic, FR4 substrate, and high-voltage output cables is filled between the high-isolation output module 3 and the housing. The ceramic possesses excellent insulation and high-temperature resistance, the FR4 substrate, a commonly used insulating material, provides stable insulation support, and the high-voltage output cables ensure insulation safety during power transmission. Through proper combination and installation, the insulation withstand voltage of the insulating material reaches over 21KV, achieving high-isolation safety protection.

[0050] By employing an insulation material composed of ceramic, FR4 substrate, and high-voltage output cables, the insulation withstand voltage is no less than 21KV. This combination of insulation materials provides reliable insulation performance, effectively preventing electrical leakage and short circuits, and ensuring the safe operation of the power supply unit under high isolation conditions.

[0051] In an embodiment of this utility model, the high isolation transformer 3012 is model AMT21 / 0.4kV-500kVA.

[0052] By selecting the AMT21 / 0.4kV-500kVA high isolation transformer 3012, this model transformer has good isolation performance and high conversion efficiency, which can meet the power supply device's requirements for high isolation voltage conversion, ensure that the high isolation output module 3 outputs the required voltage stably, and improve the overall performance of the power supply device.

[0053] Existing power supply priority control modules lack effective voltage detection and cannot monitor the status of input and output voltages in real time. When voltage anomalies occur, they cannot be detected and addressed promptly, easily leading to power supply unit failure and affecting normal equipment operation.

[0054] In an embodiment of this utility model, the first power supply priority control module 203 further includes a first voltage detection device connected in parallel, the second power supply priority control module 302 further includes a second voltage detection device connected in parallel, and the third voltage detection device 7 is connected to the DC-DC module 2011 and the filter circuit 2012.

[0055] In one possible embodiment, a first voltage detection device is connected in parallel with the first power supply priority control module 203 to detect the low isolation output voltage status in real time; a second voltage detection device is connected in parallel with the second power supply priority control module 302 to detect the high isolation output voltage status in real time; a third voltage detection device 7 is connected to the DC-DC module 2011 and the filter circuit 2012 to detect the low isolation voltage of DC27V after AC380V conversion and the voltage status of the filtered DC24V. When an abnormal voltage is detected, the voltage detection device feeds a signal back to the control system, and the control system performs corresponding processing according to a preset program to ensure stable operation of the power supply device.

[0056] The first, second, and third voltage detection devices enable real-time monitoring of voltage status, timely detection and handling of voltage anomalies, ensuring stable operation of the power supply unit and safe use of the equipment.

[0057] The optional embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, and these simple modifications all fall within the protection scope of the present utility model.

[0058] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the various possible combinations will not be described separately in this embodiment.

[0059] Furthermore, various different implementation methods of this utility model can be arbitrarily combined, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A high-isolation power supply device, the power supply device comprising a housing, characterized in that, The power supply device includes: The system includes an input module, a low-isolation output module, and a high-isolation output module. The input module is connected to both the low-isolation output module and the high-isolation output module. A high-isolation transformer is provided between the high-isolation output module and the input module. The input module includes an AC380V input interface, a DC24V input interface, and a battery input interface; The low isolation output module includes a first voltage conversion circuit, a first power supply priority control module, and a first alarm device. The high isolation output module includes a second voltage conversion circuit, a second power supply priority control module, and a second alarm device. An insulating material is provided between the high isolation output module and the housing, and the insulating material has an insulation withstand voltage of not less than 21KV.

2. The power supply device according to claim 1, characterized in that, The first voltage conversion circuit includes: The first low isolation voltage conversion module is connected to the AC380V input interface and is used to output AC380V as DC27V low isolation voltage. The second low isolation voltage conversion module is connected to the DC24V input interface and is used to output the DC24V as a corresponding DC low isolation voltage. The third low isolation voltage conversion module is connected to the battery input interface and is used to output the battery voltage as the corresponding low isolation voltage. The second voltage conversion circuit includes: The first high isolation voltage conversion module is connected to the AC380V input interface and is used to output AC380V as DC27V high isolation voltage. The second high isolation voltage conversion module is connected to the DC24V input interface and is used to boost the DC24V output to the corresponding DC high isolation voltage. The third high isolation voltage conversion module is connected to the battery input interface and is used to boost the battery voltage and output it as the corresponding high isolation voltage.

3. The power supply device according to claim 2, characterized in that, The first low isolation voltage conversion module includes: A three-phase PFC module is connected to the AC380V input interface and is used to convert AC380V to DC370V output. The DC-DC module is connected to the three-phase PFC module and the first power supply priority control module, and is used to convert DC370V into DC27V low isolation voltage and output it to the first power supply priority control module. The second low isolation voltage conversion module includes a filter circuit, which is connected to the first power supply priority control module and is used to perform a filtering operation to output the filtered DC24V to the first power supply priority control module. The third low isolation voltage conversion module includes a voltage regulator module, which is connected to the first power supply priority control module and is used to perform voltage regulation operation, outputting the regulated battery voltage to the first power supply priority control module.

4. The power supply device according to claim 3, characterized in that, The second voltage conversion circuit includes: A half-bridge module, connected to the three-phase PFC module and the high isolation transformer, is used to output DC370V to the high isolation transformer; The high isolation transformer is connected to the first BUCK module, and the high isolation transformer is used to convert DC370V to DC48V and output it to the first BUCK module. The first BUCK module is connected to the second power supply priority control module and is used to convert DC48V voltage into DC27V high isolation voltage and output it to the second power supply priority control module. The second high isolation voltage conversion module includes: The first BOOST boost circuit is connected to the DC24V input interface and is used to boost the DC24V output to the first full-bridge module; The first full-bridge module is connected to the first BOOST boost circuit and the high isolation transformer, and is used to output the boosted DC voltage to the high isolation transformer; The high isolation transformer is connected to the second BUCK module, and the high isolation transformer is also used to convert the boosted DC voltage into DC48V output to the second BUCK module. The second BUCK module is connected to the second power supply priority control module and is used to step down DC48V to DC25.5V and output it to the second power supply priority control module; The third high-isolation voltage conversion module includes: The second BOOST boost circuit, connected to the battery input interface, is used to boost the battery voltage and output it to the second full-bridge module. The second full-bridge module is connected to the second BOOST boost circuit and the high isolation transformer, and is used to output the boosted battery voltage to the high isolation transformer; The high isolation transformer is connected to the third BUCK module. The high isolation transformer is also used to convert the boosted battery voltage into DC48V and output it to the third BUCK module. The third BUCK module is connected to the second power supply priority control module and is used to step down DC48V to 23.5V and output it to the second power supply priority control module.

5. The power supply device according to claim 4, characterized in that, The first power supply priority control module includes a first diode, a second diode, and a third diode arranged in parallel. The first diode is connected to the DC-DC module, the second diode is connected to the filter circuit, and the third diode is connected to the voltage regulator module. The output terminals of the first diode, the second diode, and the third diode are all connected to a low isolation output interface. The second power supply priority control module includes a fourth diode, a fifth diode, and a sixth diode arranged in parallel. The fourth diode is connected to the first BUCK module, the fifth diode is connected to the second BUCK module, and the sixth diode is connected to the third BUCK module. The output terminals of the fourth, fifth, and sixth diodes are all connected to a high-isolation output interface.

6. The power supply device according to claim 3, characterized in that, The battery input interface is connected to the charging circuit, the charging circuit is connected to the preset low-power module, and the preset low-power module is connected to the DC-DC module and the filter circuit.

7. The power supply device according to claim 1, characterized in that, The insulating material is composed of ceramic, FR4 board and high voltage output cable.

8. The power supply device according to any one of claims 1-7, characterized in that, The high isolation transformer is model AMT21 / 0.4kV-500kVA.

9. The power supply device according to claim 5, characterized in that, The first power supply priority control module further includes a first voltage detection device connected in parallel, the second power supply priority control module further includes a second voltage detection device connected in parallel, and the third voltage detection device is connected to the DC-DC module and the filter circuit.

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