Voltage transformation rectifying device

Abstract

The utility model relates to the technical field of voltage transformation and rectification, in particular to a voltage transformation and rectification device, which is characterized in that alternating current flows into a plurality of rectification filter plates of a rectification filter unit through a plurality of groups of outgoing lines after being transformed by a transformer, and is converted into direct current through rectification diodes on the rectification filter plates; the direct current is filtered by a capacitor on the rectifying and filtering plate, so that the direct current is smoother, is input to an output inductor of the inductance filtering unit by the rectifying and filtering unit after being converged, and is output after being filtered by the output inductor; the multiple groups of outgoing lines are communicated with the rectifying and filtering plates through the adapter plate, the stability of electric connection between the multiple groups of outgoing lines and the rectifying and filtering plates is improved, the multiple rectifying and filtering plates are adjacent to the transformer, the size of the transformation and rectification device can be reduced, the rectifying and filtering plates are arranged in a stacked mode, the size of the rectifying and filtering unit is reduced, and the cost is reduced. And integration in a power supply is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of transformer rectification technology, and in particular to a transformer rectification device. Background Technology

[0002] High-frequency, high-voltage microwave power supplies rectify the three-phase 380V AC input to DC through a three-phase rectifier. Then, high-frequency switching devices such as IGBTs invert the DC current back to high-frequency AC current. This current is then passed through a high-voltage transformer to achieve the corresponding output voltage, and finally rectified back to DC output. Typical high-voltage transformers have few secondary leads, a high turns ratio, and large parasitic parameters, resulting in large spikes on the primary input, which are difficult to control. Furthermore, these excessive parasitic parameters limit the transformer's frequency. Additionally, the limited number of secondary leads and the large voltage range make voltage equalization difficult to control, potentially damaging the high-voltage rectifier diodes.

[0003] With the development of technology, existing transformers can adopt a structure with one input line and multiple output lines. Since the transformer is wound layer by layer, the main parasitic capacitance of the transformer is generated by the interlayer winding. After changing to multiple output lines, the turns ratio is lower, the parasitic parameters of the transformer are smaller, the primary side peak voltage is reduced, and at the same time, with more secondary output lines, the voltage span is smaller, the output voltage equalization is better controlled, and the risk of diode damage is reduced.

[0004] Because the transformer uses multiple sets of outgoing lines, in order to ensure the stability of the electrical connection between the multiple sets of outgoing lines and the rectifier filter board, the distance between the multiple sets of outgoing lines and the rectifier filter board needs to be increased. This makes the size of the transformer rectifier filter larger, which is not conducive to its integration into the power supply. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, where the transformer uses multiple sets of outgoing lines. In order to ensure the stability of the electrical connection between the multiple sets of outgoing lines and the rectifier filter board, the distance between the multiple sets of outgoing lines and the rectifier filter board needs to be increased, which increases the size of the transformer rectification filter and is not conducive to integration into the power supply. This invention provides a transformer rectification device.

[0006] In a first aspect, the present invention provides a transformer rectifier device, comprising: a transformer, a rectifier filter unit, and an inductor filter unit connected in sequence.

[0007] The rectifier and filter unit includes multiple stacked rectifier and filter boards, each of which is equipped with a capacitor and a rectifier diode connected in series, and the multiple rectifier and filter boards are arranged adjacent to the transformer;

[0008] The transformer rectifier also includes an adapter plate, which is disposed between the transformer and the rectifier filter unit;

[0009] The transformer is provided with multiple sets of outgoing lines, which are electrically connected to the adapter plate and then electrically connected to the corresponding rectifier filter plate through the adapter plate.

[0010] In the transformer rectifier device described in this solution, AC power is transformed by a transformer and then flows into multiple rectifier filter boards of the rectifier filter unit through multiple sets of outgoing lines. The rectifier diodes on the rectifier filter boards convert the AC power into DC power, and then the capacitors on the rectifier filter boards filter the DC power to make it smoother. After the DC power is collected, it is input from the rectifier filter unit to the inductor filter unit, and then filtered by the inductor filter unit before being output.

[0011] By connecting multiple sets of outgoing lines to the rectifier and filter board through the adapter board, the stability of the electrical connection between the multiple sets of outgoing lines and the rectifier and filter board is improved. This allows multiple rectifier and filter boards to be arranged adjacent to the transformer, thereby reducing the size of the transformer and rectifier device. Furthermore, the stacked arrangement of the rectifier and filter boards reduces the size of the rectifier and filter unit, which is beneficial for integration within the power supply.

[0012] The transformer rectifier device described in this solution reduces the size of the device while ensuring the stability of the connection between the multiple output lines of the transformer and the rectifier filter board, which is beneficial for integration within the power supply.

[0013] Preferably, a terminal block is provided on one side of the adapter plate, and the adapter plate is fixed and electrically connected to the rectifier filter plate through the terminal block; a solder pad with a through hole is provided on the terminal block, and multiple sets of output lines of the transformer are located on the other side of the adapter plate and pass through the through hole to be soldered to the solder pad.

[0014] By using terminals and solder pads, the stability of the electrical connection between multiple sets of outgoing lines and the rectifier filter board can be improved.

[0015] Preferably, the adapter plate supports the rectifier filter plate through the wiring terminals, which makes the installation distance between the adapter plate and the rectifier filter plate closer and reduces the volume; and facilitates the electrical connection between the adapter plate and the rectifier filter plate through the wiring terminals.

[0016] Preferably, the inductor filter unit includes multiple inductor filter boards and several output inductors. Each inductor filter board is equipped with and electrically connected to the output inductor. The multiple inductor filter boards are stacked and connected in series. The stacking direction of the multiple inductor filter boards is the same as the stacking direction of the multiple rectifier filter boards.

[0017] The inductor filter board is used to set the output inductance and ensure the safety of the power output; the inductor filter boards are stacked and connected in series, and the stacking direction of multiple inductor filter boards is the same as that of multiple rectifier filter boards, which can reduce the size of the transformer rectifier device.

[0018] Preferably, the transformer is a high-voltage transformer, and an insulating plate is further provided between the high-voltage transformer and the adapter plate; the rectifier filter plate and the inductor filter plate are both located on the same side of the insulating plate, and are located on opposite sides of the high-voltage transformer on the insulating plate.

[0019] By setting up an insulating plate, the high-voltage transformer can be isolated from the rectifier filter plate and the inductor filter plate, ensuring electrical safety.

[0020] Preferably, the inductor filter board and the rectifier filter board are respectively adjacent to the output side of the transformer.

[0021] Both the rectifier filter board and the inductor filter board are located adjacent to the output side of the transformer, which can reduce the size of the transformer rectifier device.

[0022] Preferably, each layer of the rectifier filter board is provided with an even number of columns of rectifier diodes and a filter capacitor corresponding to each column of rectifier diodes, a set of output lines of the transformer is provided corresponding to every two columns of rectifier diodes on each layer of the rectifier filter board, and the terminal block is provided corresponding to each column of rectifier diodes;

[0023] One of the outermost rectifier filter boards is grounded, the other outermost rectifier filter board serves as the output terminal of the rectifier filter unit, and the outermost inductor filter board serves as the input terminal of the inductor filter unit.

[0024] Preferably, the primary side of the transformer is provided with a set of incoming lines, which are located on the adjacent side of the output side of the transformer.

[0025] Preferably, the transformer-rectifier further includes a cooling fan, and the cooling fan and the inductor filter plate are disposed on both sides of the rectifier filter plate. The cooling fan can effectively cool the rectifier filter plate and the inductor filter plate.

[0026] Preferably, the transformer rectifier further includes a water-cooled plate, which is located on the opposite side of the output side of the transformer, so as to better cool the transformer with water.

[0027] Preferably, the transformer rectifier further includes an L-shaped insulating housing, which includes a first plate and a second plate connected to each other. The first plate and the second plate are provided with a plurality of parallel slots. The rectifier filter unit, the inductor filter unit and the transformer are all fixed to the first plate and located between the parallel slots of the first plate and the second plate. The second plate and the water-cooled plate are located on opposite sides of the first plate.

[0028] The rectifier filter unit, inductor filter unit, and transformer can be integrated in the middle by using a water-cooled plate and a first plate. The rectifier filter unit, inductor filter unit, and transformer are all fixed to the first plate and located between the parallel slots of the first plate and the second plate, which can increase the creepage distance.

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0030] This utility model provides a transformer rectifier device that connects multiple sets of output lines to rectifier filter boards via an adapter plate with terminals, improving the stability of the electrical connection between the multiple sets of output lines and rectifier filter boards. This allows multiple rectifier filter boards to be arranged adjacent to the transformer, thereby reducing the size of the transformer rectifier device. Furthermore, the stacked arrangement of the rectifier filter boards reduces the size of the rectifier filter unit, which is beneficial for integration within the power supply. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the first type of transformer-rectifier device (the transformer is set vertically);

[0032] Figure 2 This is an exploded schematic diagram of the first type of transformer-rectifier device;

[0033] Figure 3 This is a plan view of the first type of transformer-rectifier device;

[0034] Figure 4 This is a schematic diagram of the transformer structure of the first type of transformer-rectifier device (the transformer is set vertically);

[0035] Figure 5 for Figure 4 The right view;

[0036] Figure 6 for Figure 4 The front view;

[0037] Figure 7 A schematic diagram showing the stacking of rectifier filter boards;

[0038] Figure 8 This is a schematic diagram showing the arrangement of capacitors and rectifier diodes on the rectifier filter board;

[0039] Figure 9 This is a schematic diagram of the adapter plate.

[0040] Figure 10 for Figure 9 The front view;

[0041] Figure 11 This is a schematic diagram showing the support of the rectifier filter board and the wiring terminals;

[0042] Figure 12A schematic diagram of the first type of transformer rectifier equipped with a cooling fan;

[0043] Figure 13 This is a schematic diagram of the second type of transformer-rectifier device from one perspective (the transformer is set horizontally);

[0044] Figure 14 This is a structural schematic diagram of the second type of transformer-rectifier device from another perspective (the transformer is set horizontally);

[0045] Figure 15 This is a circuit diagram of a transformer-rectifier device.

[0046] The diagram shows the following markings: 1. Transformer; 11. Incoming line; 12. Outgoing line; 2. Water-cooled plate; 3. Adapter plate; 31. Terminal block; 4. Rectifier filter plate; 41. Rectifier diode; 42. Capacitor; 401. Support column; 402. Isolation plate; 5. Inductor filter plate; 51. Output inductor; 6. Cooling fan; 7. L-shaped insulating housing; 71. First plate; 72. Second plate; 712. Parallel slot; 8. Insulating plate. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0048] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0049] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0050] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0051] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0052] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0053] Example 1

[0054] like Figure 1 and Figure 2 As shown, a transformer rectifier includes: a transformer 1, a rectifier filter unit, an inductor filter unit, and an adapter plate 3. The adapter plate 3 is disposed between the transformer 1 and the rectifier filter unit. The output line 12 of the transformer 1 is electrically connected to the input terminal of the rectifier filter unit through the adapter plate 3, and the output terminal of the rectifier filter unit is electrically connected to the inductor filter unit.

[0055] In this embodiment, the transformer 1 is provided with multiple sets of outgoing lines 12, which are electrically connected to the adapter plate 3 and then electrically connected to the corresponding rectifier filter plate 4 through the adapter plate 3. Alternatively, one side of the transformer 1 is provided with multiple sets of outgoing lines, which are electrically connected to one side of the adapter plate 3. The other side of the adapter plate 3 is provided with terminals 31 corresponding to each set of outgoing lines, which are electrically connected to and fixed to the rectifier filter plate 4. Each terminal 31 has a solder pad with a through hole. The multiple sets of outgoing lines 12 of the transformer 1 are located on the other side of the adapter plate 3 and pass through the through hole to be soldered to the solder pad, thus enabling power transmission.

[0056] like Figures 1-11 As shown, the transformer 1 is vertically arranged, and one side of the transformer 1 (e.g.) Figure 1 Multiple sets of outgoing lines 12 are provided on the right side of transformer 1, and these multiple sets of outgoing lines 12 are electrically connected to one side of the adapter plate 3 (e.g., Figure 1 (Left side of the intermediate connector plate 3);

[0057] like Figures 4-7 As shown, transformer 1 has one set of incoming lines 11 (two incoming lines 11) and eight sets of outgoing lines 12. The eight sets of outgoing lines 12 are arranged vertically in four layers, with four outgoing lines 12 in each layer, i.e., two sets of outgoing lines 12 in each layer. The two sets of outgoing lines 12 in each layer are distributed in the left-right direction. The incoming lines 11 are located on the adjacent side of the outgoing lines 12.

[0058] like Figure 9 and Figure 10 As shown, the other side of the adapter plate 3 (such as...) Figure 2 The right side of the transfer plate 3 is provided with a terminal block 31 corresponding to each group of outgoing lines 12, that is, 8 groups of outgoing lines 12 correspond to 16 outgoing lines 12, and each outgoing line 12 corresponds to 1 terminal block 31, that is, a total of 16 terminal blocks 31. The 16 terminal blocks 31 correspond to the 16 outgoing lines 12 of transformer 1.

[0059] In this embodiment, the rectifier and filter unit includes multiple capacitors 42, rectifier diodes 41, and rectifier filter boards 4. Each rectifier filter board 4 is equipped with the capacitors 42 and rectifier diodes 4 connected in series. The rectifier diodes 41 perform rectification, and the capacitors 42 perform filtering after rectification. The multiple rectifier filter boards 4 are stacked, reducing the size of the rectifier and filter unit. The multiple rectifier filter boards 4 are arranged adjacent to the output side of the transformer 1, further reducing the size of the transformer rectification device and facilitating integration within the power supply. Furthermore, the adapter plate 3 is positioned between the output side of the transformer 1 and the multiple rectifier filter boards 4, improving the stability of the electrical connection between the multiple sets of outputs and the rectifier filter boards. This allows the multiple rectifier filter boards to be arranged adjacent to the output side of the transformer, solving the problem that the reduced distance between the multiple sets of outputs and the rectifier filter boards affects the stability of the electrical connection.

[0060] like Figures 1-7 As shown, the two sets of outgoing lines correspond to four terminals 31 and one rectifier filter board 4. All the rectifier diodes 41 and capacitors 42 are mounted on multiple rectifier filter boards 4. The number of rectifier filter boards 4 is the same as the number of layers of the transformer 1 outgoing lines 12 in the stacking direction of the rectifier filter boards, that is, all rectifier filter boards 4 are stacked and connected in series. In a specific embodiment, the transformer outgoing lines are located on one side of the adapter plate 3, and the other side of the adapter plate 3 (e.g., Figure 8 On the right side of the intermediate adapter board 3, there is a terminal block 31. The terminal block 31 has an opening with a solder pad in the center, through which the transformer output wire connects to the solder pad. The rectifier filter board has mounting holes with conductive pads inside. The terminal blocks have solder pads with through holes, and the conductive pads conduct electricity to the solder pads, thus achieving electrical connection between the rectifier filter board and the adapter board. The rectifier filter board is a PCB (Printed Circuit Board, an important electronic component that supports electronic components and serves as the carrier for electrical interconnection). It can electrically connect the capacitors and rectifier diodes 41 mounted on it, allowing electrical connection through the terminal block 31 to the corresponding rectifier diodes 41 on the rectifier filter board 4. This ensures that the output wires 12 of the transformer 1, the terminal blocks 31 of the adapter board 3, and the rectifier filter board 4 are correspondingly arranged and electrically connected, and that the output wires 12 of the transformer 1, the terminal blocks 31 of the adapter board 3, and the rectifier diodes 41 are all correctly positioned and electrically connected.

[0061] like Figure 1 and Figure 2 As shown, a total of four rectifier filter boards 4 are set. Each rectifier filter board 4 is equipped with four rows of rectifier diodes 41 and four capacitors 42. The four rows of rectifier diodes 41 and their corresponding terminals 31 are set in corresponding positions. Figure 7 and Figure 8As shown, an isolation plate 402 is provided between two adjacent rectifier filter boards 4, and both the rectifier filter board 4 and the isolation plate 402 are connected and supported by support columns 401 provided at the four corners, and the connection method is a detachable connection such as screw connection.

[0062] The arrangement of the rectifier diodes 41 and capacitors 42 described above is based on the change in the arrangement of the output lines 12 of the transformer 1. Each layer of the rectifier filter board 4 is provided with an even number of columns of rectifier diodes 41 and a filter capacitor 4 corresponding to each column of rectifier diodes 41. A set of output lines 12 of the high-voltage transformer 1 is arranged corresponding to every two columns of rectifier diodes 41 on each layer of the rectifier filter board 4. The terminal block 31 is arranged corresponding to each column of rectifier diodes 41.

[0063] Optional implementation methods, such as Figure 11 As shown, the adapter plate 3 supports the rectifier filter plate 4 via the terminal block 31, making the installation distance between the adapter plate 3 and the rectifier filter plate 4 closer, reducing the size; and facilitating electrical connection between the adapter plate 3 and the rectifier filter plate 4 via the terminal block 31. Figures 7-8 As shown, terminal 31 is a PCB terminal, which is a slot-shaped opening facing downwards. It has a connection hole at the top, allowing it to be connected to the rectifier filter board 4 via a connector. The connector can be a screw or similar structure. Figure 8 In the rectifier filter board, the capacitors and rectifier diodes are mainly connected in series. When it is necessary to increase the current carrying capacity, they can be connected in series and parallel.

[0064] Optional implementation methods, such as Figures 1-3 As shown, the inductor filtering unit includes multiple output inductors 51 and multiple inductor filter boards 5 mounted and electrically connected to the output inductors 51. That is, each inductor filter board 5 is mounted and electrically connected to the output inductor 51. The output inductor 51 is used to reduce output ripple. The inductor filter board 5 is also a PCB board. The multiple inductor filter boards 5 are stacked and connected in series. The stacking direction of the multiple inductor filter boards 5 is the same as the stacking direction of the multiple rectifier filter boards 4, which can reduce the size of the transformer rectifier device. The rectifier filter board 4 used for output of the rectifier filter unit and the inductor filter board 5 used for input of the inductor filter unit are electrically connected to realize the circuit connection between the rectifier filter unit and the inductor filter unit.

[0065] In an optional implementation, one of the outermost rectifier filter boards 4 is grounded, the other outermost rectifier filter board 4 serves as the output terminal of the rectifier filter unit, and the outermost inductor filter board serves as the input terminal of the inductor filter unit. That is, the other outermost rectifier filter board 4 is electrically connected to the outermost inductor filter board 5. Figure 1In this configuration, the topmost rectifier filter board 4 is grounded, and the bottommost rectifier filter board 4 is electrically connected to the bottommost inductor filter board 5; the multiple inductor filter boards 5 are connected in series. These electrical connections can be made using wires.

[0066] Furthermore, both the inductor filter board 5 and the rectifier filter board 4 are adjacent to the output side of the transformer 1, which can reduce the size of the transformer-rectifier device, such as... Figure 1 As shown.

[0067] Optional implementation methods, such as Figures 1-3 As shown, the transformer 1 is a high-voltage transformer, and an insulating plate 8 is provided between the high-voltage transformer and the adapter plate 3; the rectifier filter plate 4 and the inductor filter plate 5 are both located on the same side of the insulating plate 8, and are located on opposite sides of the high-voltage transformer 1 on the insulating plate 8. By providing the insulating plate 8, the high-voltage transformer 1 can be isolated from the rectifier filter plate 4 and the inductor filter plate 5, ensuring electrical safety.

[0068] Optional implementation methods, such as Figures 1-3 As shown, the transformer rectifier also includes a water-cooled plate 2, which is located on the opposite side of the output line side of the transformer 1, enabling better heat dissipation for the transformer 1. The water-cooled plate 2, the high-voltage transformer 1, and the adapter plate 3 are arranged in sequence, which reduces the overall size of the transformer rectifier.

[0069] Optional implementation methods, such as Figures 1-3 As shown, the transformer rectifier also includes an L-shaped insulating housing 7. The L-shaped insulating housing 7 includes a first plate 71 and a second plate 72 connected to each other. The second plate 72 and the water-cooled plate 2 are located on opposite sides of the first plate 71. The rectifier filter plate 4, the inductor filter plate 5, and the transformer 1 can be integrated in the middle through the water-cooled plate 2 and the first plate 71. The first plate 71 and the second plate 72 are provided with a plurality of parallel slots 712. The rectifier filter plate 4, the inductor filter plate 5, and the transformer 1 are all fixed to the first plate 71, and the creepage distance can be increased through the parallel slots 712.

[0070] Optional implementation methods, such as Figure 12 As shown, the transformer rectifier also includes a cooling fan 6. The cooling fan 6 and the inductor filter plate 5 are disposed on both sides of the rectifier filter plate 4. The cooling fan 6 can effectively dissipate heat from the rectifier filter plate 4 and the inductor filter plate 5. The cooling fan 6 is connected to the first plate 71 and / or the second plate 72 by a fixing member to maintain its stability.

[0071] The transformer-rectifier device described in this solution, such as Figure 15As shown, after being transformed by transformer 1, the alternating current flows into multiple rectifier filter boards 4 of the rectifier filter unit through multiple sets of output lines 12. The rectifier diodes 41 on the rectifier filter boards 4 convert the alternating current into direct current (DC). Then, the capacitors on the rectifier filter boards 4 filter the DC current to make it smoother. The DC current is then fed into the output inductor of the inductor filter unit from the output terminal of the rectifier filter unit. It is then filtered sequentially by the output inductors 51 on the three inductor filter boards 5 before being output. A converter plate 3 with terminals 31 connects the multiple sets of output lines 12 to the rectifier filter boards 4, improving the stability of the connection between them. This reduces the size of the transformer-rectifier device. Furthermore, the rectifier filter boards 4 are stacked in the left-right direction, further reducing the size of the rectifier filter and facilitating integration within the power supply. The transformer-rectifier device described in this solution reduces the size of the transformer-rectifier device while ensuring the stability of the connection between the multiple sets of output lines 12 of transformer 1 and the rectifier filter boards 4, making it suitable for integration within the power supply, such as in the high-voltage power supply of a microwave power supply project.

[0072] Example 2

[0073] A transformer-rectifier device, such as Figure 13 and Figure 14 As shown, the difference from Embodiment 1 is that the transformer 1 is horizontally arranged, the water-cooled plate 2 is located at the bottom, and the output line 12 of the transformer 1 is located on the top. When the transformer 1 is a high-voltage transformer 1, an insulating plate 8 is provided on its top side, and the output line 12 of the transformer 1 passes through the insulating plate 8 and connects to the adapter plate 3. The adapter plate 3 and the rectifier filter plate 4 are respectively set on the left and right sides of the upper side of the transformer 1 through L-shaped plates as supports. The rectifier filter plates 4 are stacked in the left and right direction and are arranged vertically.

[0074] In the two embodiments described above, the transformer rectifier device optimizes the structure of the output line 12 of transformer 1. Transformer 1 is changed to 8 sets of output lines 12 on the secondary side. Since transformer 1 is wound layer by layer, the main parasitic capacitance of transformer 1 is generated by the interlayer windings. After changing to multiple sets of output lines 12, the internal winding becomes segmented, and the capacitance of each segment is reduced. The capacitance between segments is in series, making the total capacitance smaller. That is, the multiple sets of output lines 12 effectively reduce the parasitic parameters of transformer 1. With 8 sets of output lines 12, the voltage of each set is 1 / 8 of the total voltage, which effectively reduces the risk of damage to the high-voltage rectifier diode 41. At the same time, the multiple sets of rectifier filter boards 4 are used in series, reducing the structural volume and making it more compact. Furthermore, by connecting the transformer and the rectifier filter board through an adapter plate, the volume of the transformer rectifier device is reduced while ensuring the stability of the connection between the multiple sets of output lines 12 of transformer 1 and the rectifier filter board 4, which is beneficial for integration into the power supply.

[0075] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A voltage conversion rectification device comprising: A transformer, a rectifier filter unit, and an inductor filter unit are connected in sequence; characterized in that, The rectifier and filter unit includes multiple stacked rectifier and filter boards, each of which is equipped with a capacitor and a rectifier diode connected in series, and the multiple rectifier and filter boards are arranged adjacent to the transformer; The transformer rectifier also includes an adapter plate, which is disposed between the transformer and the rectifier filter unit; The transformer is provided with multiple sets of outgoing lines, which are electrically connected to the adapter plate and then electrically connected to the corresponding rectifier filter plate through the adapter plate.

2. The device according to claim 1, characterized in that The adapter plate has a terminal block on one side, and the adapter plate is fixed and electrically connected to the rectifier filter plate through the terminal block; the terminal block has a pad with a through hole, and the multiple output lines of the transformer are located on the other side of the adapter plate and pass through the through hole to be soldered to the pad.

3. A variable voltage rectifier device according to claim 2, wherein The inductor filter unit includes multiple inductor filter boards and several output inductors. Each inductor filter board is equipped with and electrically connected to the output inductor. The multiple inductor filter boards are stacked and connected in series. The stacking direction of the multiple inductor filter boards is the same as the stacking direction of the multiple rectifier filter boards.

4. A variable voltage rectifier device according to claim 3, wherein The transformer is a high-voltage transformer, and an insulating plate is also provided between the high-voltage transformer and the adapter plate; the rectifier filter plate and the inductor filter plate are both located on the same side of the insulating plate, and are located on opposite sides of the high-voltage transformer on the insulating plate.

5. A variable voltage rectifier device according to claim 3, wherein The inductor filter board and the rectifier filter board are respectively located adjacent to the output side of the transformer.

6. A transformer-rectifier device according to claim 5, characterized in that, Each layer of the rectifier filter board is provided with an even number of columns of rectifier diodes and a filter capacitor corresponding to each column of rectifier diodes. A set of output lines of the transformer is provided for every two columns of rectifier diodes on each layer of the rectifier filter board. The terminal block is provided for each column of rectifier diodes. One of the outermost rectifier filter boards is grounded, the other outermost rectifier filter board serves as the output terminal of the rectifier filter unit, and the outermost inductor filter board serves as the input terminal of the inductor filter unit.

7. A variable voltage rectifier device according to claim 6, wherein The primary side of the transformer is provided with a set of incoming lines, which are located on the adjacent side of the output side of the transformer.

8. A variable voltage rectifier device according to claim 5, wherein It also includes a cooling fan, and the cooling fan and the inductor filter board are disposed on both sides of the rectifier filter board.

9. A device according to any one of claims 1 to 8, wherein It also includes a water-cooled plate, which is disposed on the opposite side of the output side of the transformer.

10. A variable voltage rectifier device according to claim 9, wherein It also includes an L-shaped insulating housing, which includes a first plate and a second plate connected to each other. The first plate and the second plate are provided with a plurality of parallel slots. The rectifier filter unit, the inductor filter unit and the transformer are all fixed to the first plate and located between the parallel slots of the first plate and the second plate. The second plate and the water-cooling plate are located on opposite sides of the first plate.

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