CN-224204968-U - High-isolation power supply device

CN224204968UCN 224204968 UCN224204968 UCN 224204968UCN-224204968-U

Abstract

The utility model relates to the technical field of power supplies, and particularly discloses a high-isolation power supply device which comprises an input module, a low-isolation output module and a high-isolation output module, wherein the input module is respectively 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 a shell, and the insulating withstand voltage of the insulating material is not lower than 21KV. Through modularized design, high withstand voltage insulation and intelligent priority control, the safety, reliability and localization breakthrough of the power supply equipment are realized, and the method is further applicable to the field with severe power supply requirements.

Inventors

LIU YANSHAN
JIANG DAJUN
JIANG PENG
Ye Ninghao
YAN YIXIAO
SHEN HAIFENG

Assignees

成都大奇鹰科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250519

Claims (9)

1. A high isolation power supply apparatus, the power supply apparatus comprising a housing, the power supply apparatus comprising: The input module is respectively 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 input module comprises an AC380V input interface, a DC24V input interface and a battery input interface; 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.
2. The power supply apparatus according to claim 1, wherein the first voltage conversion circuit includes: the first low-isolation voltage conversion module is connected with the AC380V input interface and is used for outputting the AC380V into DC27V low-isolation voltage; the second low-isolation voltage conversion module is connected with the DC24V input interface and is used for outputting the DC24V into corresponding direct-current low-isolation voltage; The third low isolation voltage conversion module is connected with the battery input interface and is used for outputting the battery voltage to the corresponding battery low isolation voltage; the second voltage conversion circuit includes: the first high-isolation voltage conversion module is connected with the AC380V input interface and is used for outputting the AC380V into DC27V high-isolation voltage; the second high-isolation voltage conversion module is connected with the DC24V input interface and is used for boosting and outputting the DC24V into corresponding direct-current high-isolation voltage; and the third high-isolation voltage conversion module is connected with the battery input interface and is used for boosting and outputting the battery voltage to the corresponding battery high-isolation voltage.
3. The power supply device of claim 2, wherein the first low isolation voltage conversion module comprises: The three-phase PFC module is connected with the AC380V input interface and is used for converting AC380V into DC370V and outputting; The DC-DC module is connected with the three-phase PFC module and the first power supply priority control module and is used for converting DC370V into DC27V low isolation voltage and outputting the DC27V low isolation voltage to the first power supply priority control module; The second low-isolation voltage conversion module comprises a filter circuit, wherein the filter circuit is connected with the first power supply priority control module and is used for executing a filter operation and outputting filtered DC24V to the first power supply priority control module; The third low-isolation voltage conversion module comprises a voltage stabilizing module, wherein the voltage stabilizing module is connected with the first power supply priority control module and is used for executing voltage stabilizing operation and outputting the voltage of the battery after voltage stabilization to the first power supply priority control module.
4. A power supply device according to claim 3, wherein the second voltage conversion circuit comprises: The half-bridge module is connected with the three-phase PFC module and the high-isolation transformer and is used for outputting DC370V to the high-isolation transformer; The high-isolation transformer is connected with the first BUCK module and is used for converting DC370V into DC48V and outputting the DC48V to the first BUCK module; The first BUCK module is connected with the second power supply priority control module and is used for converting DC48V voltage into DC27V high-isolation voltage and outputting the DC27V high-isolation voltage to the second power supply priority control module; The second high isolation voltage conversion module includes: The first BOOST circuit is connected with the DC24V input interface and is used for boosting and outputting the DC24V to the first full-bridge module; The first full-bridge module is connected with the first BOOST circuit and the high-isolation transformer and is used for outputting the boosted direct-current voltage to the high-isolation transformer; The high-isolation transformer is connected with the second BUCK module and is also used for converting the boosted direct-current voltage into DC48V and outputting the DC48V to the second BUCK module; The second BUCK module is connected with the second power supply priority control module and is used for reducing the DC48V to DC25.5V and outputting the DC to the second power supply priority control module; The third high isolation voltage conversion module includes: The second BOOST circuit is connected with the battery input interface and is used for boosting and outputting the battery voltage to the second full-bridge module; The second full-bridge module is connected with the second BOOST circuit and the high-isolation transformer and is used for outputting the boosted battery voltage to the high-isolation transformer; The high-isolation transformer is connected with the third BUCK module and is also used for converting the boosted battery voltage into DC48V and outputting the DC48V to the third BUCK module; The third BUCK module is connected with the second power supply priority control module and used for reducing the DC48V to 23.5V and outputting the DC to the second power supply priority control module.
5. The power supply device according to claim 4, wherein the first power supply priority control module includes a first diode, a second diode, and a third diode arranged in parallel, the first diode being connected to the DC-DC module, the second diode being connected to the filter circuit, the third diode being connected to the voltage regulator module, the output terminals of the first diode, the second diode, and the third diode being connected to a low isolation output interface; The second power supply priority control module comprises a fourth diode, a fifth diode and a sixth diode which are arranged in parallel, wherein the fourth diode is connected with the first BUCK module, the fifth diode is connected with the second BUCK module, the sixth diode is connected with the third BUCK module, and the output ends of the fourth diode, the fifth diode and the sixth diode are connected with the high-isolation output interface.
6. A power supply device according to claim 3, wherein the battery input interface is connected to a charging circuit, the charging circuit being connected to a preset low power module, the preset low power module being connected to the DC-DC module and the filter circuit.
7. The power supply device of claim 1, wherein the insulating material is composed of a combination 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 of the AMT21/0.4kV-500kVA type.
9. The power supply device of claim 5, wherein the first power priority control module further comprises a first voltage detection device arranged in parallel, the second power priority control module further comprises a second voltage detection device arranged in parallel, and a third voltage detection device is connected to the DC-DC module and the filter circuit.

Description

High-isolation power supply device Technical Field The utility model relates to the technical field of power supplies, in particular to a high-isolation power supply device. Background With the rapid development of electronic technology, various devices have increasingly stringent performance requirements on power supply devices, especially in terms of isolation performance, power supply flexibility, stability and the like. In the conventional power supply device, insufficient isolation performance is a significant problem. Many traditional power supply devices adopt simple isolation measures, cannot meet the requirement of high isolation, and electrical interference is easy to occur between input and output, so that the power supply output is unstable, and the requirements of high-precision equipment such as medical equipment, industrial automation control and the like on the purity and stability of the power supply are difficult to meet. In terms of voltage conversion, the voltage conversion module of the existing power supply device has a single function and cannot effectively convert different input types. For power input of alternating current, direct current and different voltage classes, the traditional power supply device is difficult to efficiently convert the alternating current, the direct current and the different voltage classes into proper output voltage, so that the universality of the power supply device is poor, and the power supply device cannot adapt to complicated and changeable power supply scenes. In the aspect of power supply priority control, when multiple input power sources exist simultaneously, the existing power supply device cannot reasonably distribute electric energy, and power supply confusion is easy to occur. The power supply device can not normally acquire the required electric energy, so that the reliability and stability of the power supply device are reduced, and the normal operation of the device is influenced. In view of the above, the conventional power supply device has many drawbacks in terms of isolation performance, voltage conversion, power supply control, insulation, etc., and is difficult to meet the current diversified application requirements, so a high-isolation power supply device is needed to solve the above problems. Disclosure of utility model In order to overcome the technical problems in the prior art, the embodiment of the utility model provides a high-isolation power supply device, which realizes the safety, reliability and localization breakthrough of power supply equipment through modular design, high-voltage insulation and intelligent priority control, and can be further applied to the field with severe power supply requirements. In order to achieve the aim, the embodiment of the utility model provides a high-isolation power supply device which comprises an input module, a low-isolation output module and a high-isolation output module, wherein the input module is respectively 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 input module comprises an AC380V input interface, a DC24V input interface and a battery input interface, 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 a shell, and the insulating voltage of the insulating material is not lower than 21KV. Preferably, the first voltage conversion circuit comprises a first low-isolation voltage conversion module, a second low-isolation voltage conversion module, a third low-isolation voltage conversion module and a third high-isolation voltage conversion module, wherein the first low-isolation voltage conversion module is connected with the AC380V input interface and is used for outputting the AC380V as a DC27V low-isolation voltage, the second low-isolation voltage conversion module is connected with the DC24V input interface and is used for outputting the DC24V as a corresponding DC low-isolation voltage, the third low-isolation voltage conversion module is connected with the battery input interface and is used for outputting the battery voltage as a corresponding battery low-isolation voltage, the second voltage conversion circuit comprises a first high-isolation voltage conversion module, the first high-isolation voltage conversion module is connected with the AC380V input interface and is used for outputting the AC380V as a DC27V high-isolation voltage, the second high-isolation voltage conversion module is connected with the DC24V input interface and is used for outputting the DC24V as a corresponding DC high-isolation