Rectifying assembly and switching power supply

Abstract

The application provides a rectifying assembly and a switching power supply. The rectifying assembly is used for detachable assembly with a circuit board. The rectifying assembly comprises a plurality of rectifying devices and an adapter plate. The plurality of rectifying devices are connected to the adapter plate. The adapter plate is provided with a first plug-in part. The first plug-in part is plug-in adapted with the circuit board. The plurality of rectifying devices are arranged on the adapter plate. The plurality of rectifying devices are connected to the circuit board through the adapter plate. The installation of the rectifying assembly is realized. When the rectifying assembly needs to be adjusted or the rectifying device needs to be replaced, the adapter plate can be directly taken off from the circuit board, so that the adjustment or replacement step is completed.

Description

Technical Field

[0001] This application belongs to the field of power supply technology, and in particular relates to a rectifier component and a switching power supply. Background Technology

[0002] In modern power supply design, synchronous rectification technology is widely used in power electronic devices such as switching power supplies and DC-DC converters due to its high efficiency and low loss characteristics. Synchronous rectification technology significantly reduces conduction losses and improves the overall efficiency of the power supply by using MOSFETs instead of traditional Schottky diodes.

[0003] In related technologies, rectifier components are usually directly integrated on the circuit board, which makes it impossible to adjust parameters and component specifications of rectifier devices according to specific application requirements. Summary of the Invention

[0004] The purpose of this application is to provide a rectifier component and a switching power supply, which aims to solve the problem that it is inconvenient to replace and adjust rectifier components in traditional technologies.

[0005] A first aspect of this application provides a rectifier assembly for detachable assembly with a circuit board; the rectifier assembly includes:

[0006] Multiple rectifier devices;

[0007] An adapter board is provided on which the plurality of rectifier devices are connected. The adapter board is provided with a first plug-in portion, which is adapted to be plugged into the circuit board.

[0008] It is understandable that by setting multiple rectifiers on the adapter board and connecting them to the circuit board, the rectifier assembly can be installed. Furthermore, when it is necessary to adjust the rectifier assembly or replace one of the rectifiers, the adapter board can be directly removed from the circuit board to facilitate the adjustment or replacement process.

[0009] In some embodiments of this application, at least two of the rectifier devices are spaced apart on the adapter plate along a first direction, and the first plug-in portion is a boss extending along the first direction.

[0010] Understandably, the boss is oriented in the same direction as the multiple rectifier components, which helps to reduce the space occupied by the rectifier components on the circuit board after the adapter board is inserted into the circuit board.

[0011] In some embodiments of this application, the boss is disposed on the side of the adapter plate, and the side is disposed adjacent to the surface of the adapter plate on which the rectifier device is disposed.

[0012] Understandably, this helps reduce the space occupied by the adapter board in its thickness direction, thereby reducing the space occupied by the adapter board on the circuit board after it is installed.

[0013] In some embodiments of this application, the number of the bosses is at least two, and the at least two bosses are spaced apart on the side along a second direction, which is perpendicular to the first direction.

[0014] Understandably, inserting the two bosses into the circuit board can improve the structural stability between the adapter board and the circuit board.

[0015] In some embodiments of this application, the rectifier assembly further includes a heat-conducting and heat-dissipating device, the adapter plate is detachably connected to the heat-conducting and heat-dissipating device, and the heat-conducting and heat-dissipating device is provided with a second plug-in portion, which is plugged into and adapted to the circuit board.

[0016] Understandably, since the rectifier generates heat during operation, the heat dissipation device can dissipate this heat to ensure that the rectifier operates within a normal temperature range. Furthermore, the second connector adapts to the circuit board, improving the structural stability between the heat dissipation device and the circuit board, thereby enhancing the overall structural stability of the heat dissipation device, the circuit board, and the adapter board.

[0017] In some embodiments of this application, the first insertion direction of the second connector onto the circuit board is the same as the second insertion direction of the first connector onto the circuit board. This simplifies the installation of the rectifier assembly onto the circuit board.

[0018] In some embodiments of this application, the heat-conducting and heat-dissipating device includes a first heat-conducting and heat-dissipating plate and a second heat-conducting and heat-dissipating plate arranged at an angle, the adapter plate is disposed on the first heat-conducting and heat-dissipating plate, and the second plug-in portion is disposed on the second heat-conducting and heat-dissipating plate.

[0019] Understandably, the second heat-conducting heat sink can extend between other electrical components on the circuit board to increase the heat conduction area of ​​the heat-conducting heat sink.

[0020] In some embodiments of this application, the rectifier includes at least one of a capacitor, a resistor, a control chip, and a switching transistor.

[0021] A second aspect of this application provides a switching power supply, the switching power supply including a circuit board and the aforementioned rectifier assembly, the rectifier assembly and the circuit board being detachably mounted and adapted.

[0022] In some embodiments of this application, the circuit board is provided with a first mounting hole, which is adapted to be inserted into the first plug-in portion; a welding structure is filled between the first plug-in portion and the hole wall of the first mounting hole.

[0023] Understandably, a welded structure can improve the structural stability between the circuit board and the adapter board.

[0024] In some embodiments of this application, the circuit board is provided with a second mounting hole, and the rectifier assembly further includes a heat-conducting and heat-dissipating device. The heat-conducting and heat-dissipating device is provided with a second plug-in portion, which is plugged into and adapted to the second mounting hole. A welding structure is filled between the second plug-in portion and the hole wall of the second mounting hole.

[0025] Understandably, welded structures can improve the structural stability between the circuit board and the heat dissipation devices.

[0026] In some embodiments of this application, the switching power supply further includes electrical components, which are disposed on the circuit board at a distance from the rectifier assembly; the electrical components include at least one of a transformer, an inductor, and a capacitor.

[0027] The beneficial effects of this application are as follows: In the rectifier assembly and switching power supply of this application, the rectifier assembly is used for detachable assembly with the circuit board; the rectifier assembly includes multiple rectifier devices and an adapter board; the multiple rectifier devices are connected to the adapter board, and the adapter board is provided with a first plug-in portion, which is plugged into and adapted to the circuit board; this application realizes the installation of the rectifier assembly by setting multiple rectifier devices on the adapter board and connecting multiple rectifier devices to the circuit board through the adapter board; and when it is necessary to adjust the rectifier assembly or replace the rectifier devices therein, the adapter board can be directly removed from the circuit board to facilitate the adjustment or replacement steps. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a rectifier assembly provided in an embodiment of this application;

[0029] Figure 2 Provided for an embodiment of this application Figure 1 A magnified schematic diagram of a portion of structure A;

[0030] Figure 3 A schematic diagram of the disassembled state of a switching power supply provided in an embodiment of this application;

[0031] Figure 4 A schematic diagram of the installation state of a switching power supply provided in an embodiment of this application;

[0032] Figure 5This is a schematic diagram of the structure of a switching power supply provided in an embodiment of this application.

[0033] Specific element symbol explanations: 100-rectifier device, 110-switching transistor, 120-control chip, 130-capacitor, 140-resistor, 200-adapter board, 210-first connector, 300-heat dissipation device, 310-first heat dissipation plate, 320-second heat dissipation plate, 330-second connector, 400-circuit board, 410-first mounting hole, 420-second mounting hole, 500-electrical component, a-first direction, b-second direction. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0035] It should be noted that when a component is referred to as being "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] It's important to know that in modern power supply design, synchronous rectification technology is widely used in power electronic devices such as switching power supplies and DC-DC converters due to its high efficiency and low loss. Synchronous rectification technology significantly reduces conduction losses and improves the overall efficiency of the power supply by replacing traditional Schottky diodes with MOSFETs. With technological advancements, highly integrated synchronous rectification modules have emerged on the market. These modules are directly compatible with Schottky TO-220 packaged pin-to-pin synchronous rectification devices, greatly simplifying the design process, improving R&D efficiency, and increasing the power density of the power supply.

[0038] However, existing highly integrated synchronous rectification modules have some limitations. First, these modules are typically designed with fixed parameters, making it impossible to adjust parameters and component specifications according to specific application requirements. For example, the parameters of key components such as MOSFETs and driver circuits in the module are fixed and cannot be flexibly adjusted to adapt to different operating conditions or load requirements. While this design simplifies the installation and commissioning process, it lacks flexibility in scenarios requiring customized design.

[0039] On the other hand, while there are some adjustable synchronous rectification circuit modules in the existing technology, these modules are usually complex in design, cumbersome in installation and debugging, and inconvenient to replace. For example, some adjustable modules require additional external circuit support or require complex debugging steps to adjust parameters, which not only increases the design difficulty but also reduces the reliability of the system. In addition, these modules usually cannot be directly replaced on the motherboard, making replacement or upgrades complex and time-consuming.

[0040] Based on this, this application improves the rectifier components and switching power supplies in the related technologies.

[0041] Please see Figure 1 , Figure 1 A schematic diagram of the rectifier assembly in this embodiment is shown. Figure 1 A rectifier assembly is provided for detachable assembly with a circuit board 400. The rectifier assembly includes multiple rectifier devices 100 and an adapter board 200. The multiple rectifier devices 100 are connected to the adapter board 200, and the adapter board 200 is provided with a first plug-in portion 210, which is plugged into and adapted to the circuit board 400.

[0042] It should be explained that multiple rectifier devices 100 are connected to the adapter board 200 by soldering or crimping. The rectifier devices 100 can be synchronous rectifier devices 100 such as MOSFETs or diodes; the specific type and parameters can be selected according to actual application requirements. The adapter board 200 is provided with multiple pads or connection points for fixing and connecting the rectifier devices 100. After the rectifier assembly is plugged into the circuit board 400 via the first connector 210, the rectifier device 100 is connected to the circuit on the circuit board 400 to achieve the rectification function. When it is necessary to replace or adjust the rectifier assembly, simply unplug the rectifier assembly from the circuit board 400, replace or adjust the rectifier device 100, and then replug it.

[0043] Currently, most rectifier components are directly integrated onto the circuit board 400, making it difficult to replace and adjust the rectifier device 100. However, this application achieves the installation of the rectifier component by setting multiple rectifier devices 100 on the adapter board 200 and connecting them to the circuit board 400 through the adapter board 200; furthermore, when it is necessary to adjust the rectifier component or replace one of the rectifier devices 100, the adapter board 200 can be directly removed from the circuit board 400 to facilitate the adjustment or replacement steps.

[0044] Please refer to the embodiments described in this application. Figure 1 In this embodiment, at least two rectifier devices 100 are spaced apart on the adapter plate 200 along the first direction a, and the first plug-in portion 210 is a boss extending along the first direction a.

[0045] It should be explained that at least two rectifier devices 100 are spaced apart along the first direction a on the adapter plate 200. This ensures sufficient heat dissipation space between the rectifier devices 100, preventing performance degradation or damage due to overheating. The first insertion portion 210 extends along the first direction a, forming a boss structure. This design not only facilitates alignment and insertion with the insertion slots on the circuit board 400, but also increases the stability and reliability of the insertion. The boss structure also provides a guiding effect, making it easier and more accurate to position the rectifier assembly at the designated location on the circuit board 400 during installation.

[0046] It is understandable that the orientation of the boss is the same as the arrangement direction of the multiple rectifiers 100, which helps to reduce the space occupied by the rectifiers 100 on the circuit board 400 after the adapter board 200 is plugged into the circuit board 400.

[0047] Please refer to the embodiments described in this application. Figure 1 In this embodiment, the boss is provided on the side of the adapter plate 200, and the side is adjacent to the surface of the adapter plate 200 on which the rectifier device 100 is provided.

[0048] It should be explained that the boss does not occupy the main surface space on the adapter board 200 used for mounting the rectifier device 100. The side of the boss is adjacent to the surface of the adapter board 200 where the rectifier device 100 is located. This adjacent arrangement ensures both the convenience of plugging the boss into the circuit board 400 and avoids interference from the boss with the operation of the rectifier device 100. At the same time, this layout also helps to maintain the compactness of the adapter board 200 structure, making the overall size of the rectifier assembly smaller and easier to integrate into electronic devices.

[0049] Understandably, this helps to reduce the space occupied by the adapter board 200 in its thickness direction, thereby reducing the space occupied by the adapter board 200 on the circuit board 400 after it is installed on the circuit board 400.

[0050] Please refer to the embodiments described in this application. Figure 1 In this embodiment, the number of bosses is at least two, and the at least two bosses are spaced apart on the side along the second direction b, which is perpendicular to the first direction a.

[0051] It should be explained that setting the number of bosses to at least two increases the stability and reliability of the connection between the rectifier assembly and the circuit board 400. Multiple bosses can distribute the stress during mating, reducing the risk of poor mating or damage caused by excessive force on a single boss.

[0052] It is understandable that inserting the two bosses into the circuit board 400 can help improve the structural stability between the adapter board 200 and the circuit board 400.

[0053] Please refer to the embodiments described in this application. Figure 1 The rectifier assembly in this embodiment also includes a heat-conducting and heat-dissipating device 300. The adapter plate 200 is detachably connected to the heat-conducting and heat-dissipating device 300, and the heat-conducting and heat-dissipating device 300 is provided with a second plug-in portion 330, which is plugged into and adapted to the circuit board 400.

[0054] It should be explained that the main function of the thermally conductive heat dissipation device 300 is to help dissipate heat from the rectifier device 100 and the adapter board 200, ensuring that they do not experience performance degradation or damage due to overheating during operation. The adapter board 200 and the thermally conductive heat dissipation device 300 are detachably connected. This design allows for easy installation and removal of the thermally conductive heat dissipation device 300, facilitating maintenance or replacement. Through heat conduction between the thermally conductive heat dissipation device 300 and the adapter board 200, the rectifier device 100, and the circuit board 400, the heat dissipation efficiency of the rectifier assembly is significantly improved. This helps extend the service life of the rectifier device 100 and the adapter board 200, and improves the stability and reliability of the entire electronic system.

[0055] Understandably, since the rectifier generates heat during operation, the heat dissipation device 300 can conduct away this heat to ensure that the rectifier operates within a normal temperature range. Furthermore, the second connector 330 is connected to the circuit board 400 to improve the structural stability between the heat dissipation device 300 and the circuit board 400, thereby enhancing the overall structural stability of the heat dissipation device 300, the circuit board 400, and the adapter plate 200.

[0056] In some embodiments, the heat dissipation device 300 and the adapter plate 200 are connected by screws.

[0057] Please refer to the embodiments described in this application. Figure 1 In this embodiment, the first insertion direction of the second insertion part 330 to the circuit board 400 is the same as the second insertion direction of the first insertion part 210 to the circuit board 400.

[0058] It should be explained that operators only need to perform the insertion operation in one direction, without needing to change the direction or adjust the position of the rectifier component during the insertion process. This not only improves installation efficiency but also reduces the risk of poor insertion or damage due to improper operation. This simplifies the installation of the rectifier component onto the circuit board 400.

[0059] Please refer to the embodiments described in this application. Figure 1 The heat dissipation device 300 in this embodiment includes a first heat dissipation plate 310 and a second heat dissipation plate 320 arranged at an angle, an adapter plate 200 is disposed on the first heat dissipation plate 310, and a second plug-in portion 330 is disposed on the second heat dissipation plate 320.

[0060] It should be explained that the heat dissipation device 300 adopts a dual-plate design, namely, it includes a first heat dissipation plate 310 and a second heat dissipation plate 320 arranged at an angle. This design not only increases the heat conduction area and improves heat dissipation efficiency, but also provides more flexibility for the layout of the rectifier components.

[0061] Understandably, the second heat-conducting heat sink 320 can extend between other electrical components 500 on the circuit board 400 to increase the heat-conducting area of ​​the heat-conducting heat sink 300.

[0062] In some embodiments, the included angle between the first heat-conducting heat dissipation plate 310 and the second heat-conducting heat dissipation plate 320 is 90 degrees.

[0063] In some embodiments of this application, please refer to Figure 2 , Figure 2 This embodiment provides the following. Figure 1 A partial enlarged structural diagram of A. The rectifier device 100 in this embodiment includes at least one of a capacitor 130, a resistor 140, a control chip 120, and a switching transistor 110.

[0064] In some embodiments, the switching transistor 110 is a synchronous rectifier MOSFET.

[0065] Specifically, the control chip 120 is a synchronous rectifier chip. The synchronous rectifier chip determines whether the MOSFET is conducting by detecting the negative voltage and voltage slope of the transformer secondary. Since Schottky diode rectification has a forward voltage drop, while synchronous rectifier MOSFETs do not, the selection of synchronous rectifier MOSFETs can improve the efficiency of the switching power supply.

[0066] Furthermore, to better implement the rectifier components in any of the above embodiments, please refer to [reference needed] based on the rectifier components described above. Figure 3 and Figure 4 , Figure 3 This diagram illustrates the disassembled state of the switching power supply provided in this embodiment. Figure 4 A schematic diagram of the installation state of the switching power supply provided in this embodiment is shown. This application embodiment also provides a switching power supply, which includes a circuit board 400 and the aforementioned rectifier assembly, wherein the rectifier assembly and the circuit board 400 are detachably mounted and adapted.

[0067] Understandably, when it is necessary to replace or adjust the rectifier assembly, it can be directly removed from the circuit board 400 for replacement. After replacement, the rectifier assembly can be reinstalled on the circuit board 400.

[0068] Please refer to the embodiments described in this application. Figure 3 In this embodiment, the circuit board 400 is provided with a first mounting hole 410, which is adapted to be inserted into the first plug-in part 210; a welding structure is filled between the first plug-in part 210 and the hole wall of the first mounting hole 410.

[0069] It should be explained that the welded structure is typically made of a conductive and fluid material such as solder. When the first connector 210 is inserted into the first mounting hole 410, the welding material is melted by heating and fills the gap between the connector and the hole wall. After cooling, the welding material solidifies to form a robust welded structure, firmly welding the first connector 210 into the first mounting hole 410. The welded structure can withstand a certain amount of mechanical stress, preventing the rectifier assembly from loosening or falling off during use.

[0070] Understandably, the welded structure can improve the structural stability between the circuit board 400 and the adapter board 200.

[0071] In some embodiments of this application, please refer to Figure 5 , Figure 5A schematic diagram of the switching power supply provided in this embodiment is shown. The circuit board 400 of this embodiment is provided with a second mounting hole 420. The rectifier assembly also includes a heat-conducting and heat-dissipating device 300, which is provided with a second insertion portion 330. The second insertion portion 330 is inserted and adapted to the second mounting hole 420; a soldering structure is filled between the second insertion portion 330 and the wall of the second mounting hole 420.

[0072] It should be explained that after the second connector 330 is inserted into the second mounting hole 420, the welding material is melted by heating and fills the gap between the connector and the hole wall. After cooling, the welding material solidifies to form a strong welded structure, firmly welding the second connector 330 into the second mounting hole 420. The welded structure can withstand a certain amount of mechanical stress, preventing the rectifier assembly from loosening or falling off during use.

[0073] Understandably, the welded structure can improve the structural stability between the circuit board 400 and the heat dissipation device 300.

[0074] Please refer to the embodiments described in this application. Figure 3 The switching power supply in this embodiment also includes an electrical component 500, which is disposed on the circuit board 400 at a distance from the rectifier assembly; the electrical component 500 includes at least one of a transformer, an inductor, and a capacitor.

[0075] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0076] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0077] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0078] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0079] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A rectifier assembly, characterized in that, The rectifier assembly is detachably assembled with the circuit board; the rectifier assembly includes: Multiple rectifier devices; An adapter board is provided on which the plurality of rectifier devices are connected. The adapter board is provided with a first plug-in portion, which is adapted to be plugged into the circuit board.

2. The rectifier assembly according to claim 1, characterized in that, At least two of the rectifier devices are spaced apart on the adapter plate along a first direction, and the first plug-in portion is a boss extending along the first direction.

3. The rectifier assembly according to claim 2, characterized in that, The boss is disposed on the side of the adapter plate, and the side is adjacent to the surface of the adapter plate on which the rectifier device is disposed.

4. The rectifier assembly according to claim 3, characterized in that, The number of the bosses is at least two, and the at least two bosses are spaced apart on the side along a second direction, which is perpendicular to the first direction.

5. The rectifier assembly according to claim 1, characterized in that, The rectifier assembly also includes a heat-conducting and heat-dissipating device. The adapter plate is detachably connected to the heat-conducting and heat-dissipating device, and the heat-conducting and heat-dissipating device is provided with a second plug-in portion, which is plugged into and adapted to the circuit board.

6. The rectifier assembly according to claim 5, characterized in that, The first insertion direction of the second plug-in portion onto the circuit board is the same as the second insertion direction of the first plug-in portion onto the circuit board.

7. The rectifier assembly according to claim 5, characterized in that, The heat dissipation device includes a first heat dissipation plate and a second heat dissipation plate arranged at an angle, the adapter plate is disposed on the first heat dissipation plate, and the second plug-in part is disposed on the second heat dissipation plate.

8. The rectifier assembly according to any one of claims 1 to 7, characterized in that, The rectifier device includes at least one of a capacitor, a resistor, a control chip, and a switching transistor.

9. A switching power supply, characterized in that, The switching power supply includes a circuit board and a rectifier assembly as described in any one of claims 1 to 8, wherein the rectifier assembly and the circuit board are detachably mounted and adapted.

10. The switching power supply according to claim 9, characterized in that, The circuit board is provided with a first mounting hole, which is adapted to be inserted into the first plug-in part. A welded structure is filled between the first insertion part and the wall of the first mounting hole.

11. The switching power supply according to claim 9, characterized in that, The circuit board is provided with a second mounting hole, and the rectifier assembly further includes a heat-conducting and heat-dissipating device. The heat-conducting and heat-dissipating device is provided with a second plug-in portion, which is plugged into and adapted to the second mounting hole. A welded structure is filled between the second insertion part and the wall of the second mounting hole.

12. The switching power supply according to claim 9, characterized in that, The switching power supply also includes electrical components, which are disposed on the circuit board at intervals from the rectifier assembly.

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