Rectifier module

Abstract

The utility model provides a rectifier module which is arranged on a power supply mainboard and comprises a first circuit board, a second circuit board, a transformer, a third circuit board and a plurality of output filter capacitors, and the first circuit board is inserted on the power supply mainboard; the second circuit board is inserted into the power supply mainboard and is opposite to the first circuit board; the transformer is arranged between the first circuit board and the second circuit board and is connected with the first circuit board and the second circuit board; the third circuit board is adjacent to the transformer, the first side of the third circuit board is connected with the first side of the first circuit board, and the second side of the third circuit board is connected with the first side of the second circuit board; the plurality of output filter capacitors are arranged on the third circuit board; the rectification module is connected with the power supply mainboard through the positive connection part and the negative connection part.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, in particular to a rectifier module. Background Art

[0002] At present, rectifier modules are widely used in power circuits. As the requirements for dynamic performance and output ripple of rectifier modules increase, traditional rectifier modules are gradually unable to meet the latest design requirements.

[0003] The traditional rectifier module is arranged on the power supply mainboard, and includes a transformer and two circuit boards. The two circuit boards are respectively arranged on both sides of the transformer. The two circuit boards are connected to each other by a positive connection part and a negative connection part formed by a copper sheet, and the two circuit boards are respectively inserted on the power supply mainboard. In the traditional rectifier module, since the filter elements are usually arranged on the circuit boards on both sides of the transformer, and other electronic components such as power devices need to be placed on the circuit boards on both sides, there are fewer places where the filter elements can be arranged in the traditional rectifier module. Therefore, the dynamic response of the traditional rectifier module is general and the output ripple characteristics are poor.

[0004] Therefore, it is necessary to develop a rectifier module to solve the problems faced by the prior art. It should be noted that the information disclosed in the above prior art section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0005] The utility model aims to provide a rectifier module with fast dynamic response and good output ripple characteristics.

[0006] To achieve the above-mentioned purpose, the utility model provides a rectifier module, which is arranged on a power supply mainboard and includes a first circuit board, a second circuit board, a transformer, a third circuit board and a plurality of output filter capacitors. The first circuit board is inserted on the power supply mainboard. The second circuit board is inserted on the power supply mainboard and is arranged opposite to the first circuit board. The transformer is arranged between the first circuit board and the second circuit board and is connected to the first circuit board and the second circuit board. The third circuit board is adjacent to the transformer, wherein the first side of the third circuit board is connected to the first side of the first circuit board, and the second side of the third circuit board is connected to the first side of the second circuit board. A plurality of output filter capacitors are arranged on the third circuit board. The rectifier module is connected to the power supply mainboard via a positive connection portion and a negative connection portion.

[0007] According to one embodiment of the present invention, the positive connection portion includes a first positive connection element and a second positive connection element which are connected to each other, the first circuit board and the second circuit board are respectively connected to the first positive connection element, and the first positive connection element is inserted into the power supply mainboard through the second positive connection element.

[0008] According to one embodiment of the present invention, the second positive connection element is inserted into a hollow portion of a magnetic core to form an inductor.

[0009] According to one embodiment of the present invention, the first circuit board is located between the second positive connecting element and the transformer.

[0010] According to one embodiment of the utility model, the first circuit board includes at least one first through-hole and at least one second through-hole, the second circuit board includes at least one first through-hole and at least one second through-hole, and the third circuit board includes at least two first through-holes and at least two second through-holes, at least two of the first through-holes are respectively penetrated through at least one of the first through-holes on the first circuit board and at least one of the first through-holes on the second circuit board, and at least two of the second through-holes are respectively penetrated through at least one of the second through-holes on the first circuit board and at least one of the second through-holes on the second circuit board, wherein the potential of at least one of the first through-holes is the same as the potential of the first end of the second positive connecting element or the second end of the second positive connecting element, and the potential of at least one of the second through-holes is the same as the potential of the negative connecting portion.

[0011] According to one embodiment of the utility model, the third circuit board includes at least two first through-holes and at least two second through-holes, the first circuit board includes at least one first through-hole portion and at least one second through-hole portion, which are respectively penetrated in at least one of the first through-holes and at least one of the second through-holes, and the second circuit board includes at least one first through-hole portion and at least one second through-hole portion, which are respectively penetrated in at least one of the first through-holes and at least one of the second through-holes, wherein the potential of at least one of the first through-hole portions is the same as the potential of the first end of the second positive connecting element or the second end of the second positive connecting element, and the potential of at least one of the second through-hole portions is the same as the potential of the negative connecting portion.

[0012] According to one embodiment of the present invention, the negative connection portion is integrally formed with the third circuit board, and the negative connection portion is disposed on a third side of the third circuit board, and the rectifier module is inserted into the power mainboard through the negative connection portion.

[0013] According to one embodiment of the utility model, the negative connection part includes a first negative connection element and a second negative connection element which are connected to each other, the first negative connection element is connected to the first side of the first circuit board and the first side of the second circuit board, the rectifier module is inserted on the power supply mainboard through the second negative connection element of the negative connection part, wherein the third circuit board is arranged between the transformer and the negative connection part, or the negative connection part is arranged between the transformer and the third circuit board, or the negative connection part and the third circuit board are located in the same plane.

[0014] According to one embodiment of the present invention, there is a gap between the transformer and the first circuit board and the second circuit board, a first distance is formed between part of the third circuit board and the first circuit board, and a second distance is formed between part of the third circuit board and the second circuit board, so that a plurality of grooves are formed between the third circuit board and the first circuit board and the second circuit board respectively, wherein the plurality of grooves and the gap form a flow duct.

[0015] According to one embodiment of the utility model, the positive connection part is integrally formed with the first circuit board, and the positive connection part is arranged on the third side of the first circuit board, the negative connection part includes a first negative connection element and a second negative connection element which are connected to each other, the first negative connection element is connected to the first side of the first circuit board and the first side of the second circuit board, and the rectifier module is inserted on the power supply mainboard through the second negative connection element of the negative connection part, wherein the third circuit board is arranged between the transformer and the negative connection part, or the negative connection part is arranged between the transformer and the third circuit board, or the negative connection part and the third circuit board are located in the same plane.

[0016] According to one embodiment of the present invention, the positive connection part and the negative connection part are integrally formed with the third circuit board and are arranged on a third side of the third circuit board, and the rectifier module is inserted into the power mainboard via the positive connection part and the negative connection part.

[0017] According to one embodiment of the present invention, the plurality of output filter capacitors on the third circuit board are electrically connected between the positive connection portion and the negative connection portion.

[0018] According to one embodiment of the present invention, the third circuit board includes a plurality of heat dissipation holes, and the plurality of heat dissipation holes and the gap between the first circuit board and the transformer and / or the gap between the second circuit board and the transformer form a flow duct.

[0019] According to one embodiment of the present invention, the first circuit board and the second circuit board respectively include at least one output pin, and the first circuit board and the second circuit board are respectively plugged into the power mainboard via the corresponding output pin.

[0020] According to one embodiment of the present invention, the rectifier module includes at least one rectifier switch disposed on the first circuit board and the second circuit board.

[0021] Therefore, in addition to being arranged on the first circuit board and the second circuit board, the output filter capacitor of the rectifier module of the present invention can also be arranged on the third circuit board. In other words, the rectifier module of the present invention can be provided with a larger number of output filter capacitors, which effectively improves the space utilization of the rectifier module, thereby optimizing the output ripple and improving the dynamic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1A This is a schematic structural diagram of a rectifier module according to a first embodiment of the present utility model;

[0023] Figure 1B for Figure 1A The exploded structural diagram of the rectifier module shown;

[0024] Figure 2A This is a structural schematic diagram of a rectifier module according to a second embodiment of the present utility model;

[0025] Figure 2B for Figure 2A The exploded structural diagram of the rectifier module shown;

[0026] Figure 3A It is a structural schematic diagram of a rectifier module of the third embodiment of the utility model;

[0027] Figure 3B for Figure 3A The exploded structural diagram of the rectifier module shown;

[0028] Figure 4A This is a schematic structural diagram of a rectifier module according to a fourth embodiment of the present utility model;

[0029] Figure 4B for Figure 4A The exploded structural diagram of the rectifier module shown;

[0030] Figure 5A This is a structural schematic diagram of a rectifier module according to a fifth embodiment of the present utility model;

[0031] Figure 5B for Figure 5A The exploded structural diagram of the rectifier module shown;

[0032] Fig. 6A This is a structural schematic diagram of a rectifier module according to a sixth embodiment of the present utility model;

[0033] Figure 6B for Fig. 6A The exploded structural diagram of the rectifier module shown;

[0034] Fig. 7A This is a structural schematic diagram of a rectifier module according to a seventh embodiment of the present utility model;

[0035] Figure 7B for Fig. 7A Schematic diagram of the exploded structure of the rectifier module shown.

[0036] The reference numerals are as follows:

[0037] 1, 1a, 1b, 1c, 1d, 1e, 1f: Rectifier module

[0038] 2: Power supply motherboard

[0039] 31: First circuit board

[0040] 311: First perforation of the first circuit board

[0041] 312: Second perforation of the first circuit board

[0042] 313: First penetration portion of the first circuit board

[0043] 314: Second penetration portion of the first circuit board

[0044] 319: First output pin

[0045] 32: Second circuit board

[0046] 321: First perforation of the second circuit board

[0047] 322: Second perforation of the second circuit board

[0048] 323: First penetration portion of the second circuit board

[0049] 324: Second penetration portion of the second circuit board

[0050] 329: Second output pin

[0051] 33: The third circuit board

[0052] 331: First side of the third circuit board

[0053] 332: Second side of the third circuit board

[0054] 333: The third side of the third circuit board

[0055] 334: The fourth side of the third circuit board

[0056] 335: first penetration portion of the third circuit board

[0057] 336: Second penetration portion of the third circuit board

[0058] 337: First perforation of the third circuit board

[0059] 338: Second perforation of the third circuit board

[0060] 339: Cooling holes

[0061] 34: First groove

[0062] 35: Second groove

[0063] 4: Transformer

[0064] 41: First gap

[0065] 42: Second gap

[0066] 51: Output filter capacitor

[0067] 52: Rectifier switch

[0068] 6: Magnetic core

[0069] 61: Hollow

[0070] 7: Positive connection

[0071] 71: First positive connection element

[0072] 72: Second positive connection element

[0073] 8: Negative connection

[0074] 81: First negative connection element

[0075] 82: Second negative connection element DETAILED DESCRIPTION

[0076] Some typical embodiments that embody the features and advantages of the utility model will be described in detail in the following description. It should be understood that the utility model can have various changes in different ways without departing from the scope of the utility model, and the description and drawings therein are essentially used for illustration rather than for limiting the utility model.

[0077] It should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0078] In the following, some embodiments of the present invention are described in detail in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0079] See also Figure 1A and Figure 1B ,in Figure 1AThis is a schematic structural diagram of a rectifier module according to a first embodiment of the present utility model. Figure 1B for Figure 1A Schematic diagram of the exploded structure of the rectifier module shown. As shown in the figure, the rectifier module 1 of the present embodiment is arranged on the power supply mainboard 2, and includes a first circuit board 31, a second circuit board 32, a third circuit board 33, a transformer 4, a plurality of output filter capacitors 51, a magnetic core 6, a positive connection portion 7 and a negative connection portion 8. The first circuit board 31 is inserted on the power supply mainboard 2. The second circuit board 32 is inserted on the power supply mainboard 2 and is arranged opposite to the first circuit board 31. The transformer 4 is arranged between the first circuit board 31 and the second circuit board 32, and a first gap 41 is provided between one side of the transformer 4 and the first circuit board 31, and a second gap 42 is provided between the other side of the transformer 4 and the second circuit board 32, and the transformer 4 is connected to the first circuit board 31 and the second circuit board 32 respectively. The third circuit board 33 is adjacent to the transformer 4, but not in contact with the transformer 4, and is located between the first circuit board 31 and the second circuit board 32, that is, the first circuit board 31, the third circuit board 33 and the second circuit board 32 surround the transformer 4 in sequence. The third circuit board 33 includes a first side 331, a second side 332, a third side 333 and a fourth side 334. The first side 331 and the second side 332 are arranged opposite to each other, and the third side 333 and the fourth side 334 are arranged opposite to each other. The first side 331 of the third circuit board 33 is connected to the first side of the first circuit board 31, and the second side 332 of the third circuit board 33 is connected to the first side of the second circuit board 32.

[0080] The plurality of output filter capacitors 51 may be disposed on a side of the third circuit board 33 away from the transformer 4, or disposed on a side of the third circuit board 33 adjacent to the transformer 4, or disposed on both sides of the first circuit board 31 and the second circuit board 32. In addition, the plurality of output filter capacitors 51 are electrically connected between the positive connection portion 7 and the negative connection portion 8. The magnetic core 6 is disposed on a side of the first circuit board 31 away from the transformer 4, and the magnetic core 6 includes a hollow portion 61.

[0081] The rectifier module 1 is connected to the power supply mainboard 2 via the positive connection part 7 and the negative connection part 8. In the present embodiment, the positive connection part 7 is composed of a copper sheet, including a first positive connection element 71 and a second positive connection element 72, and the first positive connection element 71 and the second positive connection element 72 are connected to each other. In the present embodiment, the shape of the positive connection part 7 is not limited, for example, the positive connection part 7 is L-shaped. The first circuit board 31 and the second circuit board 32 are respectively connected to the first positive connection element 71, for example, the first circuit board 31 and the second circuit board 32 are respectively connected to the first positive connection element 71 in a plug-in manner. The second positive connection element 72 is inserted into the hollow part 61 of the magnetic core 6 to form an inductor, and is plugged into the power supply mainboard 2, wherein the first circuit board 31 is located between the second positive connection element 72 and the transformer 4. In some embodiments, the position of the first positive connection element 71 can be adjusted according to demand, for example, the first positive connection element 71 and the third circuit board 33 can be located on opposite sides of the transformer 4, that is, the transformer 4 is located between the first positive connection element 71 and the third circuit board 33. In some embodiments, the position of the second positive connection element 72 can be adjusted according to needs. For example, the second positive connection element 72 and the third circuit board 33 can be located on opposite sides of the transformer 4, that is, the transformer 4 is located between the second positive connection element 72 and the third circuit board 33. In this embodiment, the negative connection portion 8 is composed of a portion of the third circuit board 33, that is, the negative connection portion 8 and the third circuit board 33 are an integrally formed structure, and the negative connection portion 8 is disposed on the third side 333 of the third circuit board 33 and is inserted into the power supply mainboard 2. In some embodiments, the position of the third circuit board 33 can be adjusted according to needs. Figure 1A Only one position is shown; the third circuit board 33 may also be located on other sides of the transformer 4 .

[0082] As can be seen from the above, the rectifier module 1 of the utility model includes three circuit boards, namely the first circuit board 31, the second circuit board 32 and the third circuit board 33, wherein the transformer 4 is arranged between the first circuit board 31 and the second circuit board 32, the third circuit board 33 is adjacent to the transformer 4, and the two sides of the third circuit board 33 are respectively connected to the first circuit board 31 and the second circuit board 32, and a plurality of output filter capacitors 51 can be arranged on any circuit board. Therefore, compared with the traditional rectifier module in which the filter element can only be arranged on two opposite circuit boards, the output filter capacitor 51 of the rectifier module 1 of the utility model can also be arranged on the third circuit board 33. In other words, the rectifier module 1 of the utility model can be provided with a larger number of output filter capacitors 51, which effectively improves the space utilization of the rectifier module, thereby optimizing the output ripple and improving the dynamic performance.

[0083] Please review Figure 1A and Figure 1BIn this embodiment, the first circuit board 31 includes at least one first through hole 311 and at least one second through hole 312. The first through hole 311 of the first circuit board 31 is the first potential end of the first circuit board 31, and the second through hole 312 of the first circuit board 31 is the second potential end of the first circuit board 31, wherein the first through hole 311 and the second through hole 312 are both located on the side of the first circuit board 31 adjacent to the third circuit board 33. The second circuit board 32 includes at least one first through hole 321 and at least one second through hole 322. The first through hole 321 of the second circuit board 32 is the first potential end of the second circuit board 32, and the second through hole 322 of the second circuit board 32 is the second potential end of the second circuit board 32, wherein the first through hole 321 and the second through hole 322 are both located on the side of the second circuit board 32 adjacent to the third circuit board 33. The third circuit board 33 includes at least two first through-holes 335 and at least two second through-holes 336. The first penetration portion 335 of the third circuit board 33 is the first potential end of the third circuit board 33, wherein the first penetration portion 335 adjacent to the first circuit board 31 is penetrated through the first through hole 311 of the first circuit board 31, and the first penetration portion 335 adjacent to the second circuit board 32 is penetrated through the first through hole 321 of the second circuit board 32. The second penetration portion 336 of the third circuit board 33 is the second potential end of the third circuit board 33, wherein the second penetration portion 336 adjacent to the first circuit board 31 is penetrated through the second through hole 312 of the first circuit board 31, and the second penetration portion 336 adjacent to the second circuit board 32 is penetrated through the second through hole 322 of the second circuit board 32.

[0084] According to the above connection relationship, the first potential end of the third circuit board 33 is electrically connected to the first potential end of the first circuit board 31 and the first potential end of the second circuit board 32 respectively; the second potential end of the third circuit board 33 is electrically connected to the second potential end of the first circuit board 31 and the second potential end of the second circuit board 32 respectively. In addition, the potential of the first through-set portion 335 of the third circuit board 33 is the same as the potential of the first end of the second positive connection element 72 (the end connected to the first positive connection element 71) or the second end of the second positive connection element 72 (the end connected to the power supply mainboard 2), and the potential of the second through-set portion 336 is the same as the potential of the negative connection portion 8. It should be understood that the filter circuit after rectification is usually a CLC (capacitor-inductor-capacitor) filter circuit, that is, the signal first passes through the first output filter capacitor and then the inductor, and finally passes through the second output filter capacitor. Generally, the capacitance of the first output filter capacitor is smaller than that of the second output filter capacitor. When the potential of the first penetration portion 335 of the third circuit board 33 is the same as the potential of the first end of the second positive connection element 72 (the end connected to the first positive connection element 71), the output filter capacitor 51 on the third circuit board 33 is the first output filter capacitor, and the output signal of the transformer 4 can be filtered first through the first output filter capacitor 51, then filtered through the inductance formed by the magnetic core 6 and the second positive connection element 72, and finally filtered through the second output filter capacitor at other positions. When the potential of the first penetration portion 335 of the third circuit board 33 is the same as the potential of the second end of the second positive connection element 72 (the end connected to the power supply mainboard 2), the output filter capacitor 51 on the third circuit board 33 is the second output filter capacitor, and the output signal of the transformer 4 is first filtered through the first output filter capacitor at other positions, then filtered through the inductance, and then filtered through the output filter capacitor 51. Of course, the output filter capacitor on the third circuit board 33 can have both the first output filter capacitor and the second output filter capacitor. It should be understood that in this case, the third circuit board 33 also needs to add corresponding penetration portions to connect with the corresponding potential ends of the first circuit board 31 and the second circuit board 32. In some embodiments, when the filtering effects of the first and second output filter capacitors are good enough, the magnetic core 6 may be further omitted, that is, filtering is performed only by the first and second output filter capacitors.

[0085] like Figure 1A and Figure 1B As shown, the third circuit board 33 of the rectifier module 1 of this embodiment includes a plurality of heat dissipation holes 339, which are arranged on the third circuit board 33. This embodiment does not limit the position of the heat dissipation holes 339. Figure 1BAs shown, part of the heat dissipation holes 339 are arranged in sequence on the first side of the third circuit board 33 adjacent to the first circuit board 31, and the heat dissipation holes 339 adjacent to the first circuit board 31 and the first gap 41 form a flow passage; another part of the heat dissipation holes 339 are arranged in sequence on the first side of the third circuit board 33 adjacent to the second circuit board 32, and the heat dissipation holes 339 adjacent to the second circuit board 32 and the second gap 42 form a flow passage. The rectifier module 1 of this embodiment forms a flow passage by using the heat dissipation holes 339 and the gap, so that the heat energy generated by the transformer 4 can be transferred to the outside of the rectifier module 1 through the flow passage, thereby effectively improving the heat dissipation efficiency.

[0086] In this embodiment, the first circuit board 31 includes at least one first output pin 319, and the first circuit board 31 is inserted into the power supply mainboard 2 via the first output pin 319 to achieve electrical connection with the power supply mainboard 2. The second circuit board 32 includes at least one second output pin 329, and the second circuit board 32 is inserted into the power supply mainboard 2 via the second output pin 329 to achieve electrical connection with the power supply mainboard 2. In this embodiment, the rectifier module 1 further includes a plurality of rectifier switches 52, which are respectively arranged on the side of the first circuit board 31 and the second circuit board 32 away from the transformer 4.

[0087] In some embodiments, the positions of the through holes and the through-holes can be changed according to the requirements. Figure 2A and Figure 2B ,in Figure 2A This is a structural diagram of a rectifier module according to a second embodiment of the present invention. Figure 2B for Figure 2ASchematic diagram of the exploded structure of the rectifier module shown. As shown in the figure, the third circuit board 33 of the rectifier module 1a of this embodiment includes at least two first through-holes 337 and at least two second through-holes 338. The first through-holes 337 of the third circuit board 33 are the first potential ends of the third circuit board 33. At least one first through-hole 337 is adjacent to the first circuit board 31, and at least one first through-hole 337 is adjacent to the second circuit board 32. The second through-hole 338 of the third circuit board 33 is the second potential end of the third circuit board 33. At least one second through-hole 338 is adjacent to the first circuit board 31, and at least one second through-hole 338 is adjacent to the second circuit board 32. The first circuit board 31 includes at least one first penetration portion 313 and at least one second penetration portion 314. The first penetration portion 313 of the first circuit board 31 is the first potential end of the first circuit board 31. The second penetration portion 314 of the first circuit board 31 is the second potential end of the first circuit board 31. At least one first penetration portion 313 of the first circuit board 31 is penetrated through a first through hole 337 on the third circuit board 33 adjacent to the first circuit board 31. At least one second penetration portion 314 of the first circuit board 31 is penetrated through a second through hole 338 on the third circuit board 33 adjacent to the first circuit board 31. The second circuit board 32 includes at least one first penetration portion 323 and at least one second penetration portion 324. The first penetration portion 323 of the second circuit board 32 is the first potential end of the second circuit board 32. The second penetration portion 324 of the second circuit board 32 is the second potential end of the second circuit board 32. At least one first penetration portion 323 of the second circuit board 32 is penetrated through a first through hole 337 on the third circuit board 33 adjacent to the second circuit board 32. At least one second penetration portion 324 of the second circuit board 32 is penetrated through a second through hole 338 on the third circuit board 33 adjacent to the second circuit board 32.

[0088] In this embodiment, the potential of the first penetration portion 313 of the first circuit board 31 is the same as the potential of the first end of the second positive connection element 72 (the end connected to the first positive connection element 71) or the second end of the second positive connection element 72 (the end connected to the first positive connection element 71), and the potential of the second penetration portion 314 of the first circuit board 31 is the same as the potential of the negative connection portion 8. The potential of the first penetration portion 323 of the second circuit board 32 is the same as the potential of the first end of the second positive connection element 72 or the second end of the second positive connection element 72, and the potential of the second penetration portion 324 of the second circuit board 32 is the same as the potential of the negative connection portion 8. When the potential of the first penetration portion 313 of the first circuit board 31 and the first penetration portion 323 of the second circuit board 32 is the same as the potential of the first end of the second positive connection element 72 (the end connected to the first positive connection element 71), the output filter capacitor 51 on the third circuit board 33 is the first output filter capacitor, and the output signal of the transformer 4 can be first filtered by the first output filter capacitor 51, then filtered by the inductor formed by the magnetic core 6 and the second positive connection element 72, and finally filtered by the second output filter capacitor at other positions. When the potential of the first penetration portion 313 of the first circuit board 31 and the first penetration portion 323 of the second circuit board 32 is the same as the potential of the second end of the second positive connection element 72 (the end connected to the power supply mainboard 2), the output filter capacitor 51 on the third circuit board 33 is the second output filter capacitor, and the output signal of the transformer 4 is first filtered by the first output filter capacitor at other positions, then filtered by the inductor, and finally filtered by the output filter capacitor 51. Of course, the output filter capacitor on the third circuit board 33 may include both the first output filter capacitor and the second output filter capacitor. It should be understood that in this case, the first circuit board 31 and the second circuit board 32 need to add corresponding through-set parts to be connected to the corresponding potential ends of the third circuit board 33. In some embodiments, when the filtering effect of the first and second output filter capacitors is good enough, the magnetic core 6 can be further omitted, that is, only the first and second output filter capacitors are used for filtering.

[0089] In some embodiments, in order to better improve the heat dissipation capability, a groove may be provided on the third circuit board 33. Figure 3A and Figure 3B ,in Figure 3A Schematic diagram of the structure of the rectifier module of the third embodiment of the utility model. Figure 3B for Figure 3A The exploded structure diagram of the rectifier module is shown in the figure. Figure 1A and Figure 1BThe third circuit board 33 of the rectifier module 1 shown includes a plurality of heat dissipation holes 339. In the rectifier module 1b of this embodiment, at least a first distance is provided between the first side 331 of the third circuit board 33 and the first circuit board 31, so that at least a first groove 34 is formed between the third circuit board 33 and the first circuit board 31, and the first groove 34 and the first gap 41 form a flow passage. At least a second distance is provided between the second side 332 of the third circuit board 33 and the second circuit board 32, so that at least a second groove 35 is formed between the third circuit board 33 and the second circuit board 32, and the second groove 35 and the second gap 42 form a flow passage. The rectifier module 1b of this embodiment forms a flow passage by setting a groove, so that the heat energy generated by the transformer 4 is transferred to the outside of the rectifier module 1b through the flow passage to achieve the function of improving heat dissipation. In this embodiment, the number of the first groove 34 and the second groove 35 can be set according to actual needs. In addition, in some embodiments, the rectifier module of the utility model can simultaneously adopt the scheme of grooves and heat dissipation holes for heat dissipation (not shown).

[0090] In some embodiments, the negative connection portion of the rectifier module may not be formed by a circuit board structure, but may be formed by an additional copper sheet. Figure 4A and Figure 4B ,in Figure 4A Schematic diagram of the structure of the rectifier module of the fourth embodiment of the utility model. Figure 4B for Figure 4A The exploded structure diagram of the rectifier module is shown in the figure. Figure 1A and Figure 1B In the rectifier module 1 shown, the negative connection part 8 of the rectifier module 1c of this embodiment is located between the third circuit board 33 and the power supply mainboard 2, and includes a first negative connection element 81 and a second negative connection element 82. The first negative connection element 81 and the second negative connection element 82 are connected to each other, and the two ends of the first negative connection element 81 are respectively connected to the first circuit board 31 and the second circuit board 32. The second negative connection element 82 is formed by the first negative connection element 81 extending toward the power supply mainboard 2, and the negative connection part 8 is inserted on the power supply mainboard 2 via the second negative connection element 82. In this embodiment, the third circuit board 33 is arranged between the transformer 4 and the negative connection part 8; or, the negative connection part 8 is arranged between the third circuit board 33 and the transformer; or, the negative connection part 8 and the third circuit board 33 are located in the same plane.

[0091] Of course, in order to better improve the heat dissipation capability of the rectifier module 1c of the fourth embodiment, a groove may also be provided on the third circuit board. Figure 5A and Figure 5B ,in Figure 5A Schematic diagram of the structure of the rectifier module of the fifth embodiment of the utility model. Figure 5B for Figure 5A The exploded structure diagram of the rectifier module is shown in the figure. Figure 4A and Figure 4B The third circuit board 33 of the rectifier module 1c shown includes a plurality of heat dissipation holes 339. In the rectifier module 1d of this embodiment, a first distance is provided between the first side 331 of a portion of the third circuit board 33 and the first circuit board 31, so that a first groove 34 is formed between the portion of the third circuit board 33 and the first circuit board 31, and the first groove 34 and the first gap 41 form a flow passage. A second distance is provided between the second side 332 of a portion of the third circuit board 33 and the second circuit board 32, so that a second groove 35 is formed between the portion of the third circuit board 33 and the second circuit board 32, and the second groove 35 and the second gap 42 form a flow passage. The rectifier module 1d of this embodiment forms a flow passage by setting a groove, so that the heat energy generated by the transformer 4 is transferred to the outside of the rectifier module 1d through the flow passage, so as to achieve the function of improving heat dissipation.

[0092] In some embodiments, the positive connection portion of the rectifier module may also be formed by a circuit board structure. Fig. 6A and Figure 6B ,in Fig. 6A Schematic diagram of the structure of the rectifier module of the sixth embodiment of the utility model. Figure 6B for Fig. 6A The exploded structure diagram of the rectifier module is shown in the figure. Figure 4A and Figure 4B The positive connection part 7 of the rectifier module 1c shown is composed of an additional copper sheet, and the positive connection part 7 of the rectifier module 1e of this embodiment is composed of a partial circuit board structure. The positive connection part 7 is an integrally formed structure with the first circuit board 31, and is arranged on a side of the first circuit board 31 adjacent to the power supply mainboard 2. The rectifier module 1e is inserted on the power supply mainboard 2 using the positive connection part 7. In some embodiments, the positive connection part 7 can also be arranged on a side of the second circuit board 32 adjacent to the power supply mainboard 2, and is integrally formed with the second circuit board 32. In addition, in this embodiment, the rectifier module 1e can omit the inductor, and achieve the effect of optimizing the output ripple by setting a plurality of output filter capacitors.

[0093] In some embodiments, the positive connection part and the negative connection part of the rectifier module can both be formed by a circuit board structure. Fig. 7A and Figure 7B ,in Fig. 7A : is a structural schematic diagram of a rectifier module according to the seventh embodiment of the present utility model, Figure 7B for Fig. 7A The exploded structure diagram of the rectifier module is shown in the figure. Figure 1A and Figure 1BThe positive connection part 7 of the rectifier module 1 shown is composed of an additional copper sheet. The positive connection part 7 and the negative connection part 8 of the rectifier module 1f of this embodiment are both composed of a part of the circuit board structure, and the positive connection part 7, the negative connection part 8 and the third circuit board 33 are integrally formed structures, and are all arranged on the side of the third circuit board 33 adjacent to the power supply mainboard 2. The rectifier module 1f is simultaneously inserted into the power supply mainboard 2 using the positive connection part 7 and the negative connection part 8. In addition, in this embodiment, the rectifier module 1f can omit the inductor, and the output ripple can be optimized by setting a plurality of output filter capacitors 51.

[0094] At present, all embodiments from the third embodiment to the seventh embodiment have the through holes set on the first circuit board and the second circuit board, and the through-holes set on the third circuit board. Of course, all embodiments from the third embodiment to the seventh embodiment can also be like the second embodiment, with the through holes set on the third circuit board and the through-holes set on the first circuit board and the second circuit board. The setting method and structure are similar to those of the second embodiment, so they will not be repeated here.

[0095] In addition, in the above embodiments, the positive connection part, the negative connection part, the through-hole and the through-hole are provided for the purpose of making the first circuit board, the second circuit board and the third circuit board electrically connected to the positive connection part and the negative connection part, and the positive connection part and the negative connection part are electrically connected to the power supply mainboard. Therefore, the number, position, etc. of the positive connection part, the negative connection part, the through-hole and the through-hole are not limited by the above embodiments, as long as the purpose can be achieved.

[0096] In summary, the rectifier module of the utility model includes three circuit boards, namely a first circuit board, a second circuit board and a third circuit board, wherein the transformer is arranged between the first circuit board and the second circuit board, the third circuit board is adjacent to the transformer, and the two sides of the third circuit board are respectively connected to the first circuit board and the second circuit board, and a plurality of output filter capacitors are arranged on the third circuit board. Therefore, in addition to being arranged on the first circuit board and the second circuit board, the output filter capacitor of the rectifier module of the utility model can also be arranged on the third circuit board. In other words, the rectifier module of the utility model can be provided with a larger number of output filter capacitors, which effectively improves the space utilization of the rectifier module, thereby optimizing the output ripple of the rectifier module and improving the dynamic response performance of the rectifier module.

Claims

1. A rectifier module, arranged on a power supply mainboard, characterized in that: Include: A first circuit board is inserted into the power supply mainboard; A second circuit board is inserted into the power supply mainboard and arranged opposite to the first circuit board; a transformer, disposed between the first circuit board and the second circuit board, and connected to the first circuit board and the second circuit board; a third circuit board, adjacent to the transformer, wherein a first side of the third circuit board is connected to a first side of the first circuit board, and a second side of the third circuit board is connected to a first side of the second circuit board; and A plurality of output filter capacitors are arranged on the third circuit board; The rectifier module is connected to the power mainboard via a positive connection portion and a negative connection portion.

2. The rectifier module according to claim 1, characterized in that: The positive connection part includes a first positive connection element and a second positive connection element which are connected to each other. The first circuit board and the second circuit board are respectively connected to the first positive connection element, and the first positive connection element is inserted on the power supply mainboard through the second positive connection element.

3. The rectifier module according to claim 2, characterized in that: The second positive connection element is inserted into a hollow portion of a magnetic core to form an inductor.

4. The rectifier module according to claim 2 or 3, characterized in that: The first circuit board is located between the second positive connection element and the transformer.

5. The rectifier module according to claim 2, characterized in that: The first circuit board includes at least one first through-hole and at least one second through-hole, the second circuit board includes at least one first through-hole and at least one second through-hole, and the third circuit board includes at least two first through-holes and at least two second through-holes, at least two of the first through-holes are respectively penetrated through at least one of the first through-holes on the first circuit board and at least one of the first through-holes on the second circuit board, and at least two of the second through-holes are respectively penetrated through at least one of the second through-holes on the first circuit board and at least one of the second through-holes on the second circuit board, wherein the potential of at least one of the first through-holes is the same as the potential of the first end of the second positive connecting element or the second end of the second positive connecting element, and the potential of at least one of the second through-holes is the same as the potential of the negative connecting portion.

6. The rectifier module according to claim 2, characterized in that: The third circuit board includes at least two first through-holes and at least two second through-holes, the first circuit board includes at least one first through-hole portion and at least one second through-hole portion, which are respectively through-holes in at least one of the first through-holes and at least one of the second through-holes, the second circuit board includes at least one first through-hole portion and at least one second through-hole portion, which are respectively through-holes in at least one of the first through-holes and at least one of the second through-holes, wherein the potential of at least one of the first through-hole portions is the same as the potential of the first end of the second positive connecting element or the second end of the second positive connecting element, and the potential of at least one of the second through-hole portions is the same as the potential of the negative connecting portion.

7. The rectifier module according to claim 1, characterized in that: The negative connection part is integrally formed with the third circuit board, and the negative connection part is arranged on a third side of the third circuit board. The rectifier module is inserted on the power mainboard through the negative connection part.

8. The rectifier module according to claim 1, characterized in that: The negative connection part includes a first negative connection element and a second negative connection element which are connected to each other, the first negative connection element is connected to the first side of the first circuit board and the first side of the second circuit board, the rectifier module is inserted on the power supply mainboard through the second negative connection element of the negative connection part, wherein the third circuit board is arranged between the transformer and the negative connection part, or the negative connection part is arranged between the transformer and the third circuit board, or the negative connection part and the third circuit board are located in the same plane.

9. The rectifier module according to claim 1, characterized in that: There is a gap between the transformer and the first circuit board and the second circuit board, a first distance is formed between part of the third circuit board and the first circuit board, and a second distance is formed between part of the third circuit board and the second circuit board, so that a plurality of grooves are formed between the third circuit board and the first circuit board and the second circuit board respectively, wherein the plurality of grooves and the gap form a flow duct.

10. The rectifier module according to claim 1, characterized in that: The positive connection part is integrally formed with the first circuit board, and the positive connection part is arranged on the third side of the first circuit board, the negative connection part includes a first negative connection element and a second negative connection element which are connected to each other, the first negative connection element is connected to the first side of the first circuit board and the first side of the second circuit board, and the rectifier module is inserted on the power supply mainboard through the second negative connection element of the negative connection part, wherein the third circuit board is arranged between the transformer and the negative connection part, or the negative connection part is arranged between the transformer and the third circuit board, or the negative connection part and the third circuit board are located in the same plane.

11. The rectifier module according to claim 1, characterized in that: The positive connection part and the negative connection part are integrally formed with the third circuit board and are arranged on a third side of the third circuit board. The rectifier module is inserted on the power mainboard via the positive connection part and the negative connection part.

12. The rectifier module according to claim 1, characterized in that: The plurality of output filter capacitors on the third circuit board are electrically connected between the positive connection portion and the negative connection portion.

13. The rectifier module according to claim 1, characterized in that: The third circuit board includes a plurality of heat dissipation holes, and the plurality of heat dissipation holes and the gap between the first circuit board and the transformer and / or the gap between the second circuit board and the transformer form a flow duct.

14. The rectifier module according to claim 1, characterized in that: The first circuit board and the second circuit board respectively include at least one output pin, and the first circuit board and the second circuit board are respectively plugged into the power mainboard via the corresponding output pin.

15. The rectifier module according to claim 1, characterized in that: The rectifier module includes at least one rectifier switch, which is arranged on the first circuit board and the second circuit board.

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