AC-DC high-power power supply module

Abstract

The utility model discloses an AC-DC high-power power supply module, which comprises a module protection shell, a voltage transformation module group and an AC-DC module board group, the voltage transformation module group comprises two power supply copper bars, a first shielding box and a plurality of voltage transformation winding groups, and a first voltage transformation winding group, a second voltage transformation winding group and a third voltage transformation winding group are respectively arranged in three voltage transformation chambers. The AC-to-DC module board group comprises a second shielding box and a plurality of AC-to-DC boards, the interior of the second shielding box is divided into three board installation chambers through shielding separation nets, and a first AC-to-DC board, a second AC-to-DC board and a third AC-to-DC board are installed in the three board installation chambers respectively; and the first shielding box and the second shielding box are respectively provided with a first fan group and a second fan group at the positions of the air inlets. According to the utility model, multiple groups of different modes of converting alternating current into direct current are adopted and are mutually shielded and mutually independently output, so that multiple groups of different high-power direct current can be output, interference of an electromagnetic field is avoided, and more stable direct current can be output.

Description

Technical Field

[0001] This utility model relates to the field of power module technology, and in particular to an AC-DC high-power power module. Background Technology

[0002] An AC-DC high-power power supply module is an electronic device that converts alternating current (AC) to direct current (DC) and provides a high-power output. The AC-DC high-power power supply module first converts the input AC to DC through a rectifier circuit, typically using a diode bridge rectifier. Then, a filter circuit smooths voltage fluctuations, resulting in a more stable DC voltage. Next, using switching power supply technology, the DC voltage is converted into a high-frequency pulse voltage by controlling the on / off state of the power switching transistors. This pulse voltage is then transformed and isolated by a high-frequency transformer, and finally converted back into a stable DC output voltage by a rectifier and filter circuit. Throughout the process, a feedback control circuit monitors and adjusts the output voltage in real time to ensure its stability and accuracy. This entire process is concentrated on an AC-to-DC board, which is prone to electromagnetic fields that affect conversion accuracy and generate significant heat. Especially during the AC transformation process, the heat generation is very high; poor heat dissipation can lead to excessively high internal temperatures within the power supply module, reducing safety. It is difficult for a single power module to output multiple stable high-power DC currents simultaneously. If it were to achieve this, the heat would be even greater and more difficult to dissipate. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to provide an AC-DC high-power power supply module that solves problems such as poor heat dissipation and the inability to output multiple stable high-power DC power supplies.

[0004] According to this utility model, an AC-DC high-power power supply module includes a module protective shell, a transformer module group, and an AC-to-DC module board group. The transformer module group includes two power supply copper busbars, a first shielding box, and multiple sets of transformer winding groups. The first shielding box is divided into three transformer chambers by a shielding mesh. The three transformer chambers are respectively equipped with a first set of transformer winding groups, a second set of transformer winding groups, and a third set of transformer winding groups. The input terminals of the first set of transformer winding groups, the second set of transformer winding groups, and the third set of transformer winding groups are all connected to the two power supply copper busbars. The output terminals of the second and third transformer winding groups are connected in series, and a protective switch is provided at the series connection point. The first, second, and third transformer winding groups, when connected in series, form a first output circuit. The first and second transformer winding groups, when connected in series, form a second output circuit. The second and third transformer winding groups, when connected in series, form a third output circuit. The AC-to-DC module board assembly includes a second shielding box and multiple AC-to-DC boards. The second shielding box is divided into three board mounting chambers by a shielding mesh. The three mounting chambers of the three boards respectively house a first AC-to-DC board, a second AC-to-DC board, and a third AC-to-DC board. The first, second, and third output circuits are respectively connected to the input pins of the first, second, and third AC-to-DC boards. The left half of the module protective shell has a first air inlet mesh plate and a first air outlet mesh plate on each of its two side walls, and the right half of the shell has a second air inlet mesh plate and a second air outlet mesh plate on each of its two side walls. The first and second shielding boxes are open at both ends, serving as an air inlet and an air outlet, respectively. The air inlet and outlet of the first shielding box are respectively connected to the first air inlet mesh plate and the first air outlet mesh plate. The air inlet and outlet of the second shielding box are respectively connected to the second air inlet mesh plate and the second air outlet mesh plate. The first shielding box and the second shielding box are respectively provided with a first fan group and a second fan group at the air inlet position. The top left side of the module protective shell is provided with an AC terminal and the right side is provided with three sets of DC terminals. The AC terminal is connected to two power supply copper busbars. The three sets of DC terminals are connected to the output pins of the first AC to DC board, the second AC to DC board and the third AC to DC board.

[0005] In some embodiments of this utility model, the first transformer winding group transforms the AC power supply to twice its original value, the second transformer winding group transforms the AC power supply to 1.5 times its original value, and the third transformer winding group transforms the AC power supply to 0.5 times its original value.

[0006] In some other embodiments of this utility model, an electronic voltmeter is provided on the AC terminal inside the module protective shell.

[0007] In some other embodiments of this utility model, the protection switch is an electrical switch. When the power supply to the first AC-to-DC board or the second AC-to-DC board is abnormal, the protection switch connecting the first transformer winding group and the second transformer winding group will be disconnected. When the power supply to the third AC-to-DC board is abnormal, the protection switch connecting the second transformer winding group and the third transformer winding group will be disconnected.

[0008] In some other embodiments of this utility model, both the first shielding box 2 and the second shielding box 5 are coated with insulating varnish on their inner and outer surfaces.

[0009] In this invention, AC power from the mains is transformed into multiple power supply circuits with different voltages. By connecting these multiple different power supply circuits in series, different levels of power supply voltage are increased to meet high power requirements. This stage employs independent heat dissipation and encapsulation shielding. After being input into the AC to DC module board, the AC is converted into DC through multiple different methods, and they are mutually shielded and output independently to achieve multiple different high-power DC outputs. This stage also employs independent heat dissipation and encapsulation shielding to prevent electromagnetic interference and output more stable DC power. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0011] Figure 1 This is a schematic diagram of the structure of an AC-DC high-power power supply module proposed in this utility model.

[0012] Figure 2 This is a schematic diagram of the internal cross-sectional structure of an AC-DC high-power power supply module proposed in this utility model.

[0013] In the diagram: 1. Module protective shell; 11. AC terminal; 12. DC terminal; 13. First vent mesh plate; 14. Second vent mesh plate; 2. First shielding box; 21. First fan assembly; 22. Transformer chamber; 23. First transformer winding assembly; 24. Second transformer winding assembly; 25. Third transformer winding assembly; 3. Power supply copper busbar; 4. Protection switch; 5. Second shielding box; 51. Second fan assembly; 52. First AC to DC converter board; 53. Second AC to DC converter board; 54. Third AC to DC converter board. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0016] Reference Figure 1-2An AC-DC high-power power supply module includes a module protective shell 1, a transformer module assembly, and an AC-to-DC module board assembly. The transformer module assembly includes two power supply copper busbars 3, a first shielding box 2, and multiple sets of transformer winding assemblies. The first shielding box 2 is divided into three transformer chambers 22 by a shielding mesh. The three transformer chambers 22 respectively house a first set of transformer winding assemblies 23, a second set of transformer winding assemblies 24, and a third set of transformer winding assemblies 25. The input terminals of the first set of transformer winding assemblies 23, 24, and 25 are all connected to the two power supply copper busbars 3. The first set of transformer winding assemblies 23, 24, and 25... The output terminals of group 24 and the third transformer winding group 25 are connected in series, and a protective switch 4 is provided at the series connection point. The first transformer winding group 23, the second transformer winding group 24, and the third transformer winding group 25 are connected in series to form a first output circuit. The first transformer winding group 23 and the second transformer winding group 24 are connected in series to form a second output circuit. The second transformer winding group 24 and the third transformer winding group 25 are connected in series to form a third output circuit. The AC to DC module board group includes a second shielding box 5 and multiple AC to DC boards. The second shielding box 5 is divided into three board mounting chambers by a shielding partition mesh. The three boards are mounted in... The module housing contains a first AC-to-DC converter board 52, a second AC-to-DC converter board 53, and a third AC-to-DC converter board 54. The first, second, and third output circuits are connected to the input pins of the first AC-to-DC converter board 52, the second AC-to-DC converter board 53, and the third AC-to-DC converter board 54, respectively. The left half of the protective housing 1 has a first air inlet grille and a first air outlet grille 13 on each side wall, while the right half has a second air inlet grille and a second air outlet grille 14 on each side wall. The first shielding box 2 and the second shielding box 5 are open at both ends, serving as an air inlet and an air outlet, respectively. The air inlet and outlet of the first shielding box 2 are respectively connected to the first air inlet mesh plate and the first air outlet mesh plate 13. The air inlet and outlet of the second shielding box 5 are respectively connected to the second air inlet mesh plate and the second air outlet mesh plate 14. The first shielding box 2 and the second shielding box 5 are respectively provided with a first fan group 21 and a second fan group 51 at the air inlet position. The top left side of the module protective shell 1 is provided with an AC terminal 11 and the right side is provided with three sets of DC terminals 12. The AC terminal 11 is connected to two power supply copper busbars 3. The three sets of DC terminals 12 are connected to the output pins of the first AC to DC board 52, the second AC to DC board 53 and the third AC to DC board 54.

[0017] For high-power DC output, voltage boosting is necessary. The transformation process easily generates heat, and the higher the transformation ratio, the easier it is to heat up. For a small power module, if the internal AC to DC board transforms too much, it is very easy to overheat (for high-power output). Therefore, the large-amplitude transformation process is set with independent shielding and independent heat dissipation to reduce the problem of large transformation amplitude and poor heat dissipation in the later stages. At the same time, it can also output multiple sets of high-voltage outputs with different transformations, which are input to the first AC to DC board 52, the second AC to DC board 53 and the third AC to DC board 54 for smaller transformations to output high-power DC. The voltage regulation is stable, the heat dissipation is good, and the shielding is good.

[0018] The first AC-to-DC board 52, the second AC-to-DC board 53, and the third AC-to-DC board 54 can output DC voltages of different voltages as needed.

[0019] When the first fan group 21 and the second fan group 51 blow air, they can quickly dissipate the heat inside the first shielding box 2 and the second shielding box 5.

[0020] The first transformer winding group 23 transforms the AC power supply to twice its original value, the second transformer winding group 24 transforms the AC power supply to 1.5 times its original value, and the third transformer winding group 25 transforms the AC power supply to 0.5 times its original value. This can achieve a 4x voltage boost, a 3.5x voltage boost, and a 2x voltage boost.

[0021] An electronic voltmeter is installed on the AC terminal 11 inside the module protective housing. By monitoring the initial input AC voltage, the output DC voltage is controlled through fine-tuning via the first AC-to-DC board 52, the second AC-to-DC board 53, and the third AC-to-DC board 54.

[0022] The protection switch 4 is an electrical switch. When the power supply to the first AC-to-DC board 52 or the second AC-to-DC board 53 is abnormal, the protection switch 4 connecting the first transformer winding group 23 and the second transformer winding group 24 will be disconnected. When the power supply to the third AC-to-DC board 54 is abnormal, the protection switch 4 connecting the second transformer winding group 24 and the third transformer winding group 25 will be disconnected. It automatically disconnects the power supply in case of short circuits or other abnormal power supply.

[0023] Both the first shielding box 2 and the second shielding box 5 are coated with insulating varnish on their inner and outer surfaces. After installation, there will be no leakage current on the module protective shell 1.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An AC-DC high-power power supply module, characterized in that: The system includes a module protective shell (1), a transformer module group, and an AC to DC module board group. The transformer module group includes two power supply copper busbars (3), a first shielding box (2), and multiple transformer winding groups. The first shielding box (2) is divided into three transformer chambers (22) by a shielding partition mesh. The three transformer chambers (22) are respectively equipped with a first transformer winding group (23), a second transformer winding group (24), and a third transformer winding group (25). The input terminals of the first transformer winding group (23), the second transformer winding group (24), and the third transformer winding group (25) are all connected to the two power supply copper busbars (3). The output terminals of the winding groups (25) are connected in series and a protective switch (4) is provided at the series connection position. The first transformer winding group (23), the second transformer winding group (24) and the third transformer winding group (25) are connected in series to form a first output circuit. The first transformer winding group (23) and the second transformer winding group (24) are connected in series to form a second output circuit. The second transformer winding group (24) and the third transformer winding group (25) are connected in series to form a third output circuit. The AC to DC module board group includes a second shielding box (5) and multiple AC to DC boards. The second shielding box (5) is divided into three board mounting chambers by a shielding partition net. The first transformer winding group (23) and the second transformer winding group (24 ...5) and the third transformer winding group (25) are connected in series to form a third output circuit. The first transformer winding group (23) and the second transformer winding group (24) are connected in series to form a third output circuit. The first transformer winding group (23) and the second transformer winding group (24) are connected in series to form a third output circuit. The first transformer winding group (25) and the third transformer winding group (25) are connected in series to form a third output circuit. The first transformer winding AC to DC board (52), second AC to DC board (53), and third AC to DC board (54). The first output circuit, second output circuit, and third output circuit are respectively connected to the input pins of the first AC to DC board (52), second AC to DC board (53), and third AC to DC board (54). The left half of the module protective shell (1) is provided with a first air inlet mesh plate and a first air outlet mesh plate (13) on both sides of the shell, and the right half of the shell is provided with a second air inlet mesh plate and a second air outlet mesh plate (14) on both sides of the shell. The first shielding box (2) and the second shielding box (5) are open at both ends and are respectively air inlets and air outlets. The air inlet and air outlet of the first shielding box (2) are respectively... Do not connect with the first air intake mesh plate and the first air outlet mesh plate (13). The air inlet and air outlet of the second shielding box (5) are connected with the second air intake mesh plate and the second air outlet mesh plate (14) respectively. The first shielding box (2) and the second shielding box (5) are respectively provided with the first fan group (21) and the second fan group (51) at the air inlet position. The top left side of the module protective shell (1) is provided with an AC terminal (11) and the right side is provided with three sets of DC terminals (12). The AC terminal (11) is connected to two power supply copper busbars (3). The three sets of DC terminals (12) are connected to the output pins of the first AC to DC board (52), the second AC to DC board (53) and the third AC to DC board (54).

2. The AC-DC high-power power supply module according to claim 1, characterized in that: The first transformer winding group (23) transforms the AC power supply to twice the original value, the second transformer winding group (24) transforms the AC power supply to 1.5 times the original value, and the third transformer winding group (25) transforms the AC power supply to 0.5 times the original value.

3. The AC-DC high-power power supply module according to claim 1, characterized in that: An electronic voltmeter is installed on the AC terminal (11) inside the module protective shell.

4. The AC-DC high-power power supply module according to claim 1, characterized in that: The protection switch (4) is an electrical switch. When the first AC to DC board (52) or the second AC to DC board (53) is abnormally powered, the protection switch (4) connected between the first transformer winding group (23) and the second transformer winding group (24) will be disconnected. When the third AC to DC board (54) is abnormally powered, the protection switch (4) connected between the second transformer winding group (24) and the third transformer winding group (25) will be disconnected.

5. The AC-DC high-power power supply module according to claim 1, characterized in that: Both the first shielding box (2) and the second shielding box (5) are coated with insulating varnish on their inner and outer surfaces.

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