Power module and welding power source

Abstract

The application relates to the technical field of power supply, in particular to a power module and a welding power supply. The power module comprises a wind guide assembly, a control board, power boards and a fan. The wind guide assembly is provided with a first opening and a second opening on two sides along a first direction, provided with a third opening and a fourth opening on two sides along a second direction, and comprises a first wall and a second wall on two sides along a third direction. The control board is arranged on the outer side of the first wall. The power boards are arranged on the wind guide assembly, and the two power boards respectively close the third opening and the fourth opening. The fan is arranged on the wind guide assembly and located at the first opening. The air duct is formed by the wind guide assembly and the two power boards, and the fan is located at one end of the air duct. The air flow in the air duct can cool the two power boards, the control board is installed on the first wall of the wind guide assembly, and the control board is also cooled, so that the heat dissipation effect of the power module is improved.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and in particular to a power supply module and a welding power supply. Background Technology

[0002] The power module includes a housing, a control board, main power components, a main transformer, a rectifier assembly, an inductor assembly, and a fan. In related technologies, the housing is divided into upper and lower sections by a partition. The control board is installed above the partition, while the main power components, main transformer, rectifier assembly, inductor assembly, and fan are installed below the partition. The fan provides ventilation and heat dissipation below the partition.

[0003] However, the space below the partition is only ventilated by a fan, without forming a complete air duct, resulting in poor heat dissipation. Utility Model Content

[0004] The embodiments of this application aim to provide a power module and a welding power supply, so as to at least improve the problem of poor heat dissipation.

[0005] In order to solve the above-mentioned technical problems, the embodiments of this application adopt the following technical solutions: In a first aspect, embodiments of this application provide a power module, the power module including an air guide assembly, a control board, a power board, and a fan; the air guide assembly has a first opening and a second opening on both sides along a first direction, a third opening and a fourth opening on both sides along a second direction, and a first wall and a second wall on both sides along a third direction; the control board is disposed on the outside of the first wall; the power board is disposed on the air guide assembly, and the two power boards respectively close the third opening and the fourth opening; the fan is disposed on the air guide assembly and located at the first opening; wherein, the first direction, the second direction, and the third direction are mutually perpendicular.

[0006] The power board includes a board body and a first electronic device. The board bodies of the two power boards respectively close the third opening and the fourth opening. The first electronic device is located on the side of the board body away from the air guide assembly.

[0007] In some embodiments, the power board includes a primary side portion of a main transformer, a component portion of a main transformer, and a secondary side portion, wherein the primary side portion of the main transformer, the component portion of the main transformer, and the secondary side portion are arranged sequentially along the first direction.

[0008] In some embodiments, the power module further includes an inductor assembly disposed on the air guide assembly and located at the second opening.

[0009] In some embodiments, the power board is provided with a first electrical connector at one end adjacent to the control board, and the control board is provided with a second electrical connector at both ends along the second direction, and the first electrical connector is plugged into the second electrical connector; the power board includes a primary side portion of the main transformer, a component portion of the main transformer, and a secondary side portion, and each of the primary side portion of the main transformer, the component portion of the main transformer, and the secondary side portion is provided with at least one of the first electrical connectors.

[0010] In some embodiments, the air guide assembly includes a first radiator, a second radiator, and a sealing plate; the first radiator, the sealing plate, and the second radiator are arranged sequentially along the first direction.

[0011] In some embodiments, the power board includes a main transformer component; the main transformer component is at least partially located between the first heat sink and the second heat sink.

[0012] In some embodiments, the first heat sink includes two first heat dissipation walls disposed opposite each other along the third direction, the second heat sink includes two second heat dissipation walls disposed opposite each other along the third direction, the number of the sealing plates is two, the first heat dissipation wall, the sealing plate and the second heat dissipation wall are connected sequentially along the first direction, one first heat dissipation wall, one sealing plate and one second heat dissipation wall constitute at least a portion of the first wall, and another first heat dissipation wall, another sealing plate and another second heat dissipation wall constitute at least a portion of the second wall.

[0013] In some embodiments, the power board includes a primary side portion and a secondary side portion of a main transformer; the primary side portion of the main transformer is thermally connected to the first heat dissipation wall, and the secondary side portion is thermally connected to the second heat dissipation wall.

[0014] In some embodiments, the first radiator includes two first sub-radiators, each sub-radiator including a first connecting wall and two first sub-heat dissipation walls. The two first sub-heat dissipation walls are disposed opposite to each other along the third direction, and the two ends of the first connecting wall are respectively connected to the two first sub-heat dissipation walls. The two first sub-heat dissipation walls of the first sub-radiator are respectively connected to the two first sub-heat dissipation walls of another first radiator to form two first heat dissipation walls. The two first connecting walls of the two first sub-radiators are spaced apart along the second direction to enclose and form a first heat dissipation duct between the two first sub-radiators. In some embodiments, the second radiator includes two second sub-radiators, each sub-radiator including a second connecting wall and two second sub-heat dissipation walls. The two second sub-heat dissipation walls are arranged opposite each other along the third direction, and the two ends of the second connecting wall are respectively connected to the two second sub-heat dissipation walls. The two second sub-heat dissipation walls of the second sub-radiator are respectively connected to the two second sub-heat dissipation walls of another second radiator to form two second heat dissipation walls. The two second connecting walls of the two second sub-radiators are spaced apart along the second direction to enclose and form a second heat dissipation duct between the two second sub-radiators.

[0015] In some embodiments, the air guiding assembly includes a first air guiding shroud and a second air guiding shroud. The first air guiding shroud is disposed on the side of the first heat sink away from the second heat sink, and the second air guiding shroud is disposed on the side of the second heat sink away from the first heat sink. The two ends of the first air guiding shroud along the second direction are respectively connected to the two power boards, and the two ends of the first air guiding shroud along the third direction are respectively connected to the two first heat dissipation walls. The two ends of the second air guiding shroud along the second direction are respectively connected to the two power boards, and the two ends of the second air guiding shroud along the third direction are respectively connected to the two second heat dissipation walls. The first air guiding shroud has a first opening, and the second air guiding shroud has a second opening.

[0016] In some embodiments, the first air guide shroud is provided with a first slot, the second air guide shroud is provided with a second slot, and the power board is inserted into the first slot and the second slot at both ends along the first direction, respectively.

[0017] Secondly, embodiments of this application provide a welding power source, the welding power source including a power module as described in any embodiment of the first aspect.

[0018] In the power module of this embodiment, the air guide assembly and two power boards enclose an air duct, and a fan is located at one end of the air duct, which can generate airflow within the air duct to dissipate heat from the two power boards. The control board is mounted on the first wall of the air guide assembly, which also dissipates heat from the control board, thus improving the heat dissipation effect of the power module. Using the above-described power module in the welding power supply improves the operational reliability of the welding power supply.

[0019] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0020] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 This is a schematic diagram of the power module structure according to an embodiment of this application; Figure 2 This is a schematic diagram of the power module from another perspective in an embodiment of this application; Figure 3 This is an exploded view of the power module according to an embodiment of this application; Figure 4 This is an exploded view of the power module from another perspective according to an embodiment of this application; Figure 5 yes Figure 3 Schematic diagram of the central air guide assembly; Figure 6 yes Figure 5 A partial structural diagram of the central air guide assembly; Figure 7 This is a schematic diagram of the sealing plate structure in one embodiment of this application; Figure 8 yes Figure 3 Schematic diagram of the medium power board; Figure 9 yes Figure 3 A schematic diagram of the control board.

[0022] The reference numerals in the detailed embodiments are as follows: 100. Power module; 1. Air guide assembly; 11. First radiator; 111. First heat dissipation wall; 112. First sub-radiator; 113. First connecting wall; 114. First sub-heat dissipation wall; 115. First heat dissipation duct; 12. Second radiator; 121. Second heat dissipation wall; 122. Second sub-radiator; 123. Second connecting wall; 124. Second sub-heat dissipation wall; 125. Second heat dissipation duct; 13. Sealing plate; 131. Drainage channel; 132. Drainage hole; 14. First air guide cover; 141. First opening; 142. First slot; 15. Second air guide cover; 151. Second opening; 152. Second slot; 1a. Third opening; 1b. Fourth opening; 1c. First wall; 1d. Second wall; 2. Control board; 21. Second electrical connector; 22. Positioning hole; 3. Power board; 31. Board body; 32. First electronic component; 3a. Primary side of main transformer; 3b. Main transformer component; 3c. Secondary side; 33. First electrical connector; 34. Positioning post; 4. Fan; 5. Inductor assembly; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0023] To facilitate understanding of this application, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a more detailed account. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or there may be one or more intervening elements between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or there may be one or more intervening elements between them.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0025] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0026] In the description of the embodiments of this application, the terms "first," "second," etc., are used to define components merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0028] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0029] Please see Figure 1 and Figure 2 This application provides a power module 100, which includes an air guide assembly 1, a control board 2, a power board 3, and a fan 4. The air guide assembly 1 works with the power board 3 to form an air duct, and the fan 4 generates airflow within the air duct to dissipate heat from the control board 2 and the power board 3. The control board 2 controls the power board 3, which functions as a main power component, a main transformer, and a rectifier component. The main power component can be a primary-side main power component, and the rectifier component can be a secondary-side rectifier component. Optionally, the fan 4 is a cooling fan.

[0030] For the air guide component 1 mentioned above, please refer to Figure 3 and Figure 4 The air guide assembly 1 has a first opening 141 and a second opening 151 on both sides along the first direction X, a third opening 1a and a fourth opening 1b on both sides along the second direction Y, and a first wall 1c and a second wall 1d on both sides along the third direction Z. A control plate 2 is located outside the first wall 1c. Power plates 3 are located on the air guide assembly 1, and the two power plates 3 respectively close the third opening 1a and the fourth opening 1b. A fan 4 is located on the air guide assembly 1 and at the first opening 141. The first direction X, the second direction Y, and the third direction Z are all perpendicular to each other. The two power plates 3 close the third opening 1a and the fourth opening 1b, so that the air guide assembly 1 and the two power plates 3 enclose an air duct, and the fan 4 is located at one end of the air duct at the first opening 141. When the fan 4 operates, for example, by blowing or drawing air into the duct, it creates airflow within the duct to dissipate heat from the two power boards 3. The control board 2, mounted on the first wall 1c, also receives heat, thus improving the heat dissipation of the power module 100. The power boards 3 and 2 are arranged around the duct, making the power module 100 compact. Optionally, the power boards 3 are mounted to the air guide assembly 1 with screws. Optionally, the control board 2 is mounted to the air guide assembly 1 with screws. Optionally, the fan 4 is mounted to the air guide assembly 1 with screws.

[0031] In some embodiments, please refer to Figure 5The airflow guide assembly 1 includes a first heat sink 11, a second heat sink 12, and a sealing plate 13; the first heat sink 11, the sealing plate 13, and the second heat sink 12 are arranged sequentially along a first direction X. The airflow guide assembly 1, including the first heat sink 11 and the second heat sink 12, increases the contact area between the airflow guide assembly 1 and the air, enhancing the airflow's heat dissipation effect on the first heat sink 11 and the second heat sink 12, thereby enhancing the heat dissipation effect on electronic devices thermally connected to the first heat sink 11 and the second heat sink 12. For example, the control board 2 and the power board 3 are thermally connected to the first heat sink 11 and the second heat sink 12 to enhance the heat dissipation effect on the control board 2 and the power board 3. Optionally, the first heat sink 11 and the second heat sink 12 are provided with heat dissipation fins to increase the heat dissipation area.

[0032] Specifically, please refer to Figure 5 The first heat sink 11 includes two first heat dissipation walls 111 arranged opposite each other along a third direction Z, and the second heat sink 12 includes two second heat dissipation walls 121 arranged opposite each other along a third direction Z. There are two sealing plates 13. The first heat dissipation walls 111, sealing plates 13, and second heat dissipation walls 121 are sequentially connected along a first direction X. One first heat dissipation wall 111, one sealing plate 13, and one second heat dissipation wall 121 constitute at least a portion of the first wall 1c, and another first heat dissipation wall 111, another sealing plate 13, and another second heat dissipation wall 121 constitute at least a portion of the second wall 1d. Connecting the first heat dissipation walls 111 and second heat dissipation walls 121 through the sealing plates 13 reduces heat transfer between the first heat dissipation walls 111 and second heat dissipation walls 121, improving the problem of heat transfer from high-temperature points to low-temperature points through the first heat dissipation walls 111 and second heat dissipation walls 121, thus preventing temperature rise at low-temperature points. Optionally, the first heat dissipation walls 111 and second heat dissipation walls 121 are metal plates, such as copper plates, aluminum plates, or stainless steel plates. Optionally, the thickness of the sealing plate 13 is less than the thickness of the first heat dissipation wall 111 and the second heat dissipation wall 121. Optionally, the sealing plate 13 is a metal plate, such as a copper plate, an aluminum plate, or a stainless steel plate.

[0033] In some embodiments, the first heat dissipation wall 111 and the second heat dissipation wall 121 are thermally connected to the control board 2, for example, the control board 2 is in close contact with the walls of the first heat dissipation wall 111 and the second heat dissipation wall 121, enhancing the heat dissipation effect on the control board 2; the first heat dissipation wall 111 and the second heat dissipation wall 121 are thermally connected to the power board 3, for example, the end faces of the first heat dissipation wall 111 and the second heat dissipation wall 121 are in close contact with the power board 3, enhancing the heat dissipation effect on the power board 3, thereby enhancing the heat dissipation effect of the power module 100. Thermally conductive connection means that heat can be conducted between two interconnected objects, such as through direct contact or through thermally conductive grease or adhesive.

[0034] In some embodiments, please refer to Figure 6The first radiator 11 includes two first sub-radiators 112. Each first sub-radiator 112 includes a first connecting wall 113 and two first sub-heating walls 114. The two first sub-heating walls 114 are arranged opposite each other along the third direction Z. The two ends of the first connecting wall 113 are respectively connected to the two first sub-heating walls 114. That is, the first sub-radiator 112 is roughly in the shape of an "I". The two first sub-heating walls 114 of the first sub-radiator 112 are respectively connected to the two first sub-heating walls 114 of the other first sub-radiator 112 to form two first heat dissipation walls 111. That is, the two first sub-radiators 112 are spliced ​​along the second direction Y to form a "ㅒ" shape. The two first connecting walls 113 of the two first sub-radiators 112 are spaced apart along the second direction Y to enclose the two first sub-radiators 112 to form a first heat dissipation duct 115. The first radiator 11 is difficult to manufacture. By dividing it into two first sub-radiators 112, manufacturing them separately and then splicing them together, it is beneficial to reduce the manufacturing difficulty and cost. Optionally, the two first sub-heaters 112 are connected by screws or by welding. In some other embodiments, the first heatsink 11 may also be integrally formed.

[0035] Understandably, along the second direction Y, the ends of the first connecting wall 113 and the first heat dissipation wall 111 are spaced apart to avoid the components on the power board 3. Thus, an air duct is also formed between the first connecting wall 113 and the power board 3. However, the complex structure of the components on the power board 3 can lead to turbulent airflow and high airflow resistance within this duct. The two first connecting walls 113 separate the first heat dissipation air duct 115, which helps to form a fixed air duct, unaffected by the power board 3, thus improving the problem of turbulent airflow within the air guide assembly 1 caused by the complex structure of the components on the power board 3.

[0036] In some embodiments, please refer to Figure 6The second radiator 12 includes two second sub-radiators 122. Each second sub-radiator 122 includes a second connecting wall 123 and two second sub-heating walls 124. The two second sub-heating walls 124 are arranged opposite each other along a third direction Z. The two ends of the second connecting wall 123 are respectively connected to the two second sub-heating walls 124. That is, the second sub-radiator 122 is roughly in the shape of an "I". The two second sub-heating walls 124 of the second sub-radiator 122 are respectively connected to the two second sub-heating walls 124 of the other second sub-radiator 122 to form two second heat dissipation walls 121. That is, the two second sub-radiators 122 are spliced ​​along a second direction Y to form a "ㅒ" shape. The two second connecting walls 123 of the two second sub-radiators 122 are spaced apart along the second direction Y to enclose a second heat dissipation duct 125 between the two second sub-radiators 122. The second radiator 12 is difficult to manufacture. By dividing it into two second sub-radiators 122, manufacturing them separately and then splicing them together, it is beneficial to reduce the manufacturing difficulty and cost. Optionally, the two second sub-heaters 122 are connected by screws or by welding. In some other embodiments, the second heatsink 12 may also be integrally formed.

[0037] Understandably, along the second direction Y, the ends of the second connecting wall 123 and the second heat dissipation wall 121 are spaced apart to avoid obstructing the components on the power board 3. Thus, an air duct is also formed between the second connecting wall 123 and the power board 3. However, the complex structure of the components on the power board 3 can lead to turbulent airflow and high airflow resistance within this duct. The two second connecting walls 123 separate the second heat dissipation air duct 125, which helps to form a fixed air duct, unaffected by the power board 3, thus improving the problem of turbulent airflow within the air guide assembly 1 caused by the complex structure of the components on the power board 3.

[0038] In some other embodiments, the first heat sink 11 is formed by joining two third sub-heat sinks arranged along a third direction Z. For example, the third sub-heat sinks are in a "ㅑ" shape, and each third sub-heat sink includes a complete first heat dissipation wall 111. In some other embodiments, the second heat sink 12 is formed by joining two fourth sub-heat sinks arranged along a third direction Z. For example, the fourth sub-heat sinks are in a "ㅑ" shape, and each fourth sub-heat sink includes a complete second heat dissipation wall 121. In some other embodiments, the first heat sink 11 and the second heat sink 12 can be integrally formed, in which case the sealing plate 13 is not required, or the sealing plate 13 is part of the integrally formed heat sink composed of the first heat sink 11 and the second heat sink 12.

[0039] In some embodiments, please refer to Figure 7The sealing plate 13 is provided with a drainage groove 131 and a drainage hole 132 at the bottom of the drainage groove 131. The drainage groove 131 is used to collect liquid in the air guiding assembly 1, and the drainage hole 132 is used to discharge the liquid in the drainage groove 131, thereby improving the problem of liquid accumulation in the air guiding assembly 1. Optionally, the drainage groove 131 is elongated and extends along the second direction Y. Optionally, the drainage hole 132 is elongated and extends along the second direction Y. Optionally, of the two sealing plates 13, one is provided with a drainage groove 131 and a drainage hole 132, and the sealing plate 13 with the drainage groove 131 and the drainage hole 132 is located below the other sealing plate 13. Optionally, the sealing plate 13 with the drainage groove 131 and the drainage hole 132 is made of plastic and can be manufactured by injection molding, thereby reducing costs.

[0040] In some embodiments, please refer to Figure 5 The airflow guide assembly 1 includes a first airflow guide shroud 14 and a second airflow guide shroud 15. The first airflow guide shroud 14 is located on the side of the first radiator 11 facing away from the second radiator 12, and the second airflow guide shroud 15 is located on the side of the second radiator 12 facing away from the first radiator 11. The two ends of the first airflow guide shroud 14 along the second direction Y are respectively connected to two power boards 3, and the two ends of the first airflow guide shroud 14 along the third direction Z are respectively connected to two first heat dissipation walls 111. The two ends of the second airflow guide shroud 15 along the second direction Y are respectively connected to two power boards 3, and the two ends of the second airflow guide shroud 15 along the third direction Z are respectively connected to two second heat dissipation walls 121. The first airflow guide shroud 14 has a first opening 141, and the second airflow guide shroud 15 has a second opening 151. The connection between the first airflow guide shroud 14 and the first heat dissipation walls 111 and the power boards 3 improves the connection reliability between the first radiator 11 and the power boards 3; the connection between the second airflow guide shroud 15 and the second heat dissipation walls 121 and the power boards 3 improves the connection reliability between the second radiator 12 and the power boards 3. Optionally, the first air guide shroud 14 and the second air guide shroud 15 are made of plastic.

[0041] It is understood that the power module 100 may also include a housing, with the air guide assembly 1 disposed inside the housing. The air guide assembly 1 is sealed to the housing via a first air guide shroud 14 and a second air guide shroud 15, thereby forming a sealed cavity between the air guide assembly 1 and the housing. The side of the power board 3 facing away from the air guide assembly 1 and the control board 2 are both located within this sealed cavity for protection. The first opening 141 and the second opening 151 communicate with the outside of the housing, allowing airflow to circulate only within the air duct and to flow in and out only through the first opening 141 and the second opening 151. This improves the problem of dust drifting into the sealed cavity between the air guide assembly 1 and the housing, reduces dust contamination on the side of the power board 3 facing away from the air guide assembly 1, and reduces dust contamination on the control board 2.

[0042] In some embodiments, please refer to Figure 1The fan 4 covers the first opening 141. For example, the size of the first opening 141 is adapted to the fan 4, so that the fan 4 seals the first opening 141 and the air duct is connected to the outside of the air guide assembly 1 only through the opening on the fan 4. Reducing the gap between the fan 4 and the edge of the first opening 141 reduces air leakage and enhances the intensity of the airflow generated by the fan 4 in the air duct.

[0043] In some embodiments, please refer to Figure 5 The first air guide shroud 14 is provided with a first slot 142, and the second air guide shroud 15 is provided with a second slot 152. The power board 3 is inserted into the first slot 142 and the second slot 152 at both ends along the first direction X, respectively. It can be understood that the first slot 142 and the second slot 152 are arranged opposite to each other. The power board 3 is slidably mounted to the air guide assembly 1 through the first slot 142 and the second slot 152, which reduces the use of screws, reduces the cost of the power module 100, simplifies the steps of installing the power board 3 into the air guide assembly 1, and improves the assembly efficiency of the power module 100.

[0044] In some embodiments, please refer to Figure 1 and Figure 2 The power board 3 includes a board body 31 and a first electronic device 32. The board body 31 of the two power boards 3 respectively closes the third opening 1a and the fourth opening 1b. The first electronic device 32 is disposed on the side of the board body 31 away from the air guide assembly 1. The first electronic device 32 is located in the sealed cavity between the air guide assembly 1 and the outer casing, which reduces dust contamination of the first electronic device 32 and extends its service life. The first electronic device 32 can be a device with a high protection level, requiring a relatively clean working environment. By placing it on the side of the board body 31 away from the air guide assembly 1, a clean working environment can be provided for it, extending its service life. Optionally, the board body 31 is a circuit board.

[0045] In some embodiments, please refer to Figure 8 The power board 3 includes a primary side 3a, a secondary side 3b, and a secondary side 3c of a main transformer, which are arranged sequentially along a first direction X. It is understood that when the power module 100 is operating, current flows sequentially along the primary side 3a, the secondary side 3b, and the secondary side 3c of the main transformer. By arranging the primary side 3a, the secondary side 3b, and the secondary side 3c sequentially along the first direction X, the problem of large current loops is improved, the problem of mutual interference between the primary side 3a, the secondary side 3b, and the secondary side 3c is reduced, the current path is shortened, circuit losses are reduced, and the efficiency of the power board 3 is improved.

[0046] In some embodiments, the primary side 3a of the main transformer is thermally connected to the first heat dissipation wall 111, and the secondary side 3c is thermally connected to the second heat dissipation wall 121. The first heat sink 11 and the second heat sink 12 dissipate heat from the primary side 3a and the secondary side 3c of the main transformer, respectively. Furthermore, since the first heat sink 11 and the second heat sink 12 are connected by a sealing plate 13, heat transfer between the primary side 3a and the secondary side 3c of the main transformer can be reduced, thus mitigating the problem of temperature rise in the lower-temperature portion of the primary side 3a and the secondary side 3c.

[0047] In some embodiments, the main transformer component 3b is at least partially located between the first radiator 11 and the second radiator 12. The first radiator 11 and the second radiator 12 are separated by two sealing plates 13, thereby forming a large clearance space between the first radiator 11 and the second radiator 12 to accommodate the large main transformer component 3b.

[0048] In some embodiments, please refer to Figure 2 The power module 100 also includes an inductor component 5, which is disposed on the air guide component 1 and located at the second opening 151. By disposing of the inductor component 5 at the second opening 151, the airflow in the air duct dissipates heat from the inductor component 5.

[0049] In the above embodiment, the primary side 3a, the secondary side 3b, and the main transformer 3c are arranged sequentially along the first direction X, while the inductor assembly 5 is located at the second opening 151. Thus, the primary side 3a, the secondary side 3b, and the inductor assembly 5 are arranged sequentially along the first direction X. It can be understood that when the power module 100 is operating, the current flows sequentially along the primary side 3a, the secondary side 3b, and the inductor assembly 5. By arranging the primary side 3a, the secondary side 3b, and the inductor assembly 5 sequentially along the first direction X, the problem of large current loops is improved, the mutual interference between the primary side 3a, the secondary side 3b, and the inductor assembly 3c is reduced, the current path is shortened, circuit losses are reduced, and the efficiency of the power board 3 and the inductor assembly 5 is improved. The secondary side portion 3c and the inductor assembly 5 can overlap or be arranged side by side in the first direction X. For example, the secondary side portion 3c and the inductor assembly 5 are arranged along the second direction Y.

[0050] In some embodiments, please refer to Figure 8 and Figure 9The power board 3 has a first electrical connector 33 at one end adjacent to the control board 2, and the control board 2 has second electrical connectors 21 at both ends along the second direction Y. The first electrical connector 33 and the second electrical connectors 21 are plugged into each other. The power board 3 and the control board 2 are electrically connected through the first electrical connector 33 and the second electrical connector 21, facilitating the connection and disconnection of the circuit between the power board 3 and the control board 2, and improving the assembly efficiency of the power board 3 and the control board 2. Optionally, the first electrical connector 33 is a male connector socket, and the second electrical connector 21 is a female connector socket.

[0051] In some embodiments, please refer to Figure 8 Each of the primary side 3a, the primary transformer component 3b, and the secondary side 3c of the main transformer has at least one first electrical connector 33. It is understood that the power board 3 has multiple second electrical connectors 21 corresponding to multiple first electrical connectors 33. Thus, the primary side 3a, the primary transformer component 3b, and the secondary side 3c of the main transformer are all independently electrically connected to the control board 2. This eliminates the need to concentrate the conductive copper foil used for connecting to the electrical connectors on the board body 31 in one place, reducing the design difficulty of the conductive copper foil on the board body 31 and improving the problem of excessively concentrated conductive copper foil leading to concentrated heat conduction and generation.

[0052] In some embodiments, please refer to Figure 8 and Figure 9 A positioning post 34 is provided at one end of the power board 3 adjacent to the control board 2. Positioning holes 22 are provided at both ends of the control board 2 along the second direction Y, and the positioning post 34 passes through the positioning holes 22. The positioning holes 22 and the positioning post 34 interlock the power board 3 and the control board 2, improving the reliability of their installation on the air guide assembly 1. Furthermore, the positioning holes 22 and the positioning post 34 improve the problem of difficulty in accurately aligning the second electrical connector 21 with the first electrical connector 33 during insertion, particularly when multiple second electrical connectors 21 of the control board 2 and multiple first electrical connectors 33 of the power board 3 are simultaneously inserted, further improving the difficulty in inserting the control board 2 and the power board 3.

[0053] This application embodiment also provides a welding power source (not shown), which includes a power module 100. Using the aforementioned power module 100 improves the operational reliability of the welding power source.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power module, characterized in that, include: The air guide assembly has a first opening and a second opening on both sides along the first direction, a third opening and a fourth opening on both sides along the second direction, and a first wall and a second wall on both sides along the third direction. The control panel is located on the outer side of the first wall; A power plate is disposed on the air guide assembly, and the two power plates respectively close the third opening and the fourth opening; A fan is installed in the air guide assembly and located at the first opening; Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

2. The power module according to claim 1, characterized in that, The power board includes a board body and a first electronic device. The board bodies of the two power boards respectively close the third opening and the fourth opening. The first electronic device is located on the side of the board body away from the air guide assembly.

3. The power module according to claim 1, characterized in that, The power board includes a primary side portion of the main transformer, a component portion of the main transformer, and a secondary side portion, which are arranged sequentially along the first direction.

4. The power module according to claim 3, characterized in that, The power module also includes an inductor component, which is disposed on the air guide component and located at the second opening.

5. The power module according to claim 1, characterized in that, The power board is provided with a first electrical connector at one end adjacent to the control board, and the control board is provided with a second electrical connector at both ends along the second direction. The first electrical connector and the second electrical connector are plugged into each other. The power board includes a primary side of the main transformer, a component part of the main transformer, and a secondary side, and each of the primary side, the component part of the main transformer, and the secondary side is provided with at least one of the first electrical connectors.

6. The power module according to claim 1, characterized in that, The air guiding assembly includes a first radiator, a second radiator, and a sealing plate; the first radiator, the sealing plate, and the second radiator are arranged sequentially along the first direction.

7. The power module according to claim 6, characterized in that, The power board includes a main transformer component; The main transformer component is located at least partially between the first radiator and the second radiator.

8. The power module according to claim 6, characterized in that, The first heat sink includes two first heat dissipation walls arranged opposite each other along the third direction, and the second heat sink includes two second heat dissipation walls arranged opposite each other along the third direction. The number of the sealing plates is two. The first heat dissipation wall, the sealing plate and the second heat dissipation wall are connected sequentially along the first direction. One first heat dissipation wall, one sealing plate and one second heat dissipation wall constitute at least a part of the first wall, and another first heat dissipation wall, another sealing plate and another second heat dissipation wall constitute at least a part of the second wall.

9. The power module according to claim 8, characterized in that, The power board includes the primary side and the secondary side of the main transformer; The primary side of the main transformer is thermally connected to the first heat dissipation wall, and the secondary side is thermally connected to the second heat dissipation wall.

10. The power module according to claim 8, characterized in that, The first radiator includes two first sub-radiators, each sub-radiator including a first connecting wall and two first sub-heat dissipation walls. The two first sub-heat dissipation walls are arranged opposite each other along the third direction, and the two ends of the first connecting wall are respectively connected to the two first sub-heat dissipation walls. The two first sub-heat dissipation walls of the first sub-radiator are respectively connected to the two first sub-heat dissipation walls of another first radiator to form two first heat dissipation walls. The two first connecting walls of the two first sub-radiators are spaced apart along the second direction to enclose and form a first heat dissipation duct between the two first sub-radiators. And / or, the second radiator includes two second sub-radiators, each sub-radiator including a second connecting wall and two second sub-heat dissipation walls, the two second sub-heat dissipation walls being arranged opposite each other along the third direction, the two ends of the second connecting wall being respectively connected to the two second sub-heat dissipation walls; the two second sub-heat dissipation walls of the second sub-radiator are respectively connected to the two second sub-heat dissipation walls of another second radiator to form two second heat dissipation walls; the two second connecting walls of the two second sub-radiators are spaced apart along the second direction to enclose and form a second heat dissipation duct between the two second sub-radiators.

11. The power module according to claim 8, characterized in that, The air guiding assembly includes a first air guiding shroud and a second air guiding shroud. The first air guiding shroud is disposed on the side of the first radiator away from the second radiator, and the second air guiding shroud is disposed on the side of the second radiator away from the first radiator. The first air guide shroud is connected to the two power boards at both ends along the second direction, and the first air guide shroud is connected to the two first heat dissipation walls at both ends along the third direction. The two ends of the second air guide shroud along the second direction are respectively connected to the two power boards, and the two ends of the second air guide shroud along the third direction are respectively connected to the two second heat dissipation walls. The first air guide shroud has the first opening, and the second air guide shroud has the second opening.

12. The power module according to claim 11, characterized in that, The first air guide shroud is provided with a first slot, and the second air guide shroud is provided with a second slot. The power board is inserted into the first slot and the second slot at both ends along the first direction, respectively.

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