A power supply module

Abstract

The application provides a power supply module, which comprises a transformer, a first circuit board fixedly connected with a first outgoing line end of the transformer, a second circuit board fixedly connected with a second outgoing line end of the transformer, output terminals connected with the first circuit board and the second circuit board respectively, input elements and detection elements fixed on different circuit boards, a first group of power elements fixed on the first circuit board, input ends and output ends of the first group of power elements connected with a secondary side of the transformer and the output terminals respectively, a second group of power elements fixed on the second circuit board, input ends and output ends of the second group of power elements connected with the secondary side of the transformer and the output terminals respectively, the first circuit board and the second circuit board oppositely arranged to form a heat dissipation air duct, and the transformer arranged at an inlet or an outlet of the heat dissipation air duct. The power supply module provided by the application improves the heat dissipation capacity of the power supply module.

Description

Technical Field

[0001] This invention relates to the field of electronic device technology, and more specifically to a power supply module. Background Technology

[0002] With the development of artificial intelligence technology, the demand for computing power in application scenarios such as large-scale model training and complex algorithm calculations is growing exponentially, prompting data centers to continuously iterate and upgrade. As the core equipment of data centers, servers face unprecedented challenges in their power supply systems, especially the increasingly prominent issue of heat dissipation in server power supplies.

[0003] In existing technologies, server power supplies are prone to transformer overheating under prolonged high-load operation, which affects power supply stability and lifespan. While adding cooling fans is a common heat dissipation solution, it is insufficient for the actual cooling needs of servers operating high power and high current. Therefore, improving the heat dissipation structure of server power supplies and enhancing their heat dissipation performance has become a crucial issue that urgently needs to be addressed in this field. Summary of the Invention

[0004] To address the problems in the prior art, embodiments of the present invention provide a power supply module that can at least partially solve the problems existing in the prior art.

[0005] This invention proposes a power supply module, the power supply module comprising:

[0006] transformer;

[0007] A first circuit board fixedly connected to the first output terminal of the transformer;

[0008] A second circuit board fixedly connected to the second output terminal of the transformer;

[0009] Output terminals that are respectively connected to the first circuit board and the second circuit board;

[0010] An input element is disposed on the primary side of the transformer and a detection element is disposed on the secondary side of the transformer. The input element and the detection element are fixed on different circuit boards.

[0011] A first group of power components is fixed to the first circuit board. The input terminal of the first group of power components is electrically connected to the secondary side of the transformer, and the output terminal of the first group of power components is connected to the output terminal.

[0012] A second set of power components is fixed to the second circuit board. The input terminal of the second set of power components is electrically connected to the secondary side of the transformer, and the output terminal of the second set of power components is connected to the output terminal.

[0013] The first circuit board and the second circuit board are arranged opposite each other to form a heat dissipation duct; the transformer is arranged at the inlet or outlet of the heat dissipation duct.

[0014] Furthermore, the input element includes a first inductor and a first capacitor, the first capacitor being connected to the first inductor, and the first inductor being connected to the primary output terminal of the transformer.

[0015] Furthermore, the first capacitor is a film capacitor or a ceramic capacitor.

[0016] Furthermore, the detection element includes a current detection unit, which is used to detect the secondary output current of the transformer.

[0017] Furthermore, the number of components included in the first group of power components is the same as the number of components included in the second group of power components, and the types of components included in the first group of power components are the same as the types of components included in the second group of power components.

[0018] Furthermore, the first circuit board and the second circuit board are arranged in parallel.

[0019] Furthermore, the first group of power components and the second group of power components each include at least one of the following components: a second capacitor, a third capacitor, a second inductor, and a rectifier switch.

[0020] Furthermore, the rectifier switch is a MOSFET switch or a diode.

[0021] Furthermore, the second capacitor is used for filtering, and the third capacitor is used for energy storage.

[0022] Furthermore, the transformer includes at least one set of sub-transformers, each set of sub-transformers corresponding to a first set of power elements, a second set of power elements, output terminals, input elements, and detection elements.

[0023] The power supply module provided in this application includes a transformer; a first circuit board fixedly connected to a first output terminal of the transformer; a second circuit board fixedly connected to a second output terminal of the transformer; output terminals connected to the first circuit board and the second circuit board respectively; an input element disposed on the primary side of the transformer and a detection element disposed on the secondary side of the transformer, the input element and the detection element being fixed on different circuit boards; a first group of power elements fixed to the first circuit board, the input terminal of the first group of power elements being electrically connected to the secondary side of the transformer, and the output terminal of the first group of power elements being connected to the output terminal; a second group of power elements fixed to the second circuit board, the input terminal of the second group of power elements being electrically connected to the secondary side of the transformer, and the input terminal of the second group of power elements being connected to the output terminal; the first circuit board and the second circuit board are arranged opposite to each other to form a heat dissipation channel; the transformer is disposed at the inlet or outlet of the heat dissipation channel, and by forming a heat dissipation channel between the first circuit board and the second circuit board and outputting power supply current through the first circuit board and the second circuit board respectively, the heat dissipation area is increased and the airflow is accelerated while reducing the current flowing through the circuit board, thereby improving the heat dissipation capacity of the power supply module. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of heat dissipation in a power supply module in the prior art.

[0026] Figure 2 This is a heat dissipation diagram of a power supply module provided in an embodiment of this application.

[0027] Figure 3 This is a three-dimensional structural schematic diagram of a power supply module provided in an embodiment of this application.

[0028] Figure 4 This is a front view structural diagram of a power supply module provided in an embodiment of this application.

[0029] Figure 5 This is a bottom view of the power supply module provided in one embodiment of this application.

[0030] Figure 6 This is a first side view of the power supply module provided in an embodiment of this application.

[0031] Figure 7 This is a second side view of the power supply module provided in one embodiment of this application.

[0032] Figure 8 This is a schematic diagram of the circuit structure of a power supply module provided in an embodiment of this application. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments and their descriptions are used to explain the present invention, but are not intended to limit the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other. The acquisition, storage, use, and processing of data in the technical solutions of this application all comply with relevant laws and regulations. The user information in the embodiments of this application is obtained through legal and compliant means, and the acquisition, storage, use, and processing of user information have been authorized and agreed upon by the customer.

[0034] To facilitate understanding of the technical solution provided in this application, the relevant content of the technical solution in this application will be explained below.

[0035] With the innovation and evolution of power supply technology, modular power supply has gained widespread application in the power supply industry due to its significant advantages such as plug-and-play functionality, convenient assembly, and flexible replacement. Modular power supply refers to a power supply system that can be composed of individual functional modules such as EMC (Electromagnetic Compatibility) modules, AC / DC (Alternating Current / Direct Current) modules, and DC / DC (Direct Current / Direct Current) modules, or modules consisting of a single independent functional unit. Common types include AC / DC modular power supplies and DC / DC modular power supplies. The core advantage of modular power supplies lies in their standardized design and compatible architecture, enabling flexible plug-and-play configurations. Users can combine power supply modules in series or parallel according to different power levels and voltage requirements to build diverse power supply solutions.

[0036] Figure 1 This is a schematic diagram of the heat dissipation of a power supply module in the prior art, such as... Figure 1As shown, the fan is located on one side of the power supply module, with airflow from left to right. The airflow mainly flows on the top and bottom sides of the PCB (Printed Circuit Board) to dissipate heat. Since the power semiconductor components (hereinafter referred to as power components) are all concentrated on a single PCB, the PCB generates significant heat.

[0037] Figure 2 This is a schematic diagram of the heat dissipation of a power supply module provided in an embodiment of this application, as shown below. Figure 2 As shown, the fan is located on one side of the power supply module, with airflow from left to right. However, due to the presence of the first printed circuit board (PCB1) and the second printed circuit board (PCB2), an airflow channel is formed between PCB1 and PCB2. When the air flows through this area, the airflow speed increases, which helps to remove heat. Furthermore, PCB1 and PCB2 respectively carry the power components at the secondary output end of the transformer, thus making the current flowing through PCB1 and PCB2 relatively... Figure 1 The current flowing through the middle PCB is small. In addition, the airflow can flow on the upper and lower sides of PCB1 and PCB2 respectively, which can increase the heat dissipation area while reducing the current flowing through the printed circuit board, thereby improving the heat dissipation effect of the power supply module.

[0038] Figure 3 This is a three-dimensional structural schematic diagram of a power supply module provided in one embodiment of this application. Figure 4 This is a front view structural diagram of a power supply module provided in one embodiment of this application. Figure 5 This is a bottom view of the power supply module provided in one embodiment of this application. Figure 6 This is a first side view of a power supply module according to an embodiment of this application. Figure 7 This is a second side view of a power supply module provided in an embodiment of this application, as shown in the diagram. Figures 3 to 7 As shown, the power supply module provided in this embodiment includes a transformer 1, a first circuit board 2, a second circuit board 3, a first group of power components, a second group of power components, and an output terminal 4, wherein:

[0039] Transformer 1;

[0040] The first circuit board 2 is fixedly connected to the first output terminal of the transformer 1;

[0041] The second circuit board 3 is fixedly connected to the second output terminal of transformer 1;

[0042] Output terminals 4 are respectively connected to the first circuit board 2 and the second circuit board 3;

[0043] An input element is provided on the primary side of transformer 1 and a detection element is provided on the secondary side of transformer 1. The input element and the detection element are fixed on different circuit boards.

[0044] A first set of power components is fixed to the first circuit board 2. The input terminal of the first set of power components is electrically connected to the secondary side of the transformer 1, and the output terminal of the first set of power components is connected to the output terminal.

[0045] The second set of power components is fixed to the second circuit board 3. The input terminal of the second set of power components is electrically connected to the secondary side of the transformer 1, and the output terminal of the second set of power components is connected to the output terminal 4.

[0046] The first circuit board 2 and the second circuit board 3 are arranged opposite each other to form a heat dissipation duct; the transformer 1 is arranged at the inlet or outlet of the heat dissipation duct.

[0047] Specifically, the first circuit board 2 and the second circuit board 3 are arranged opposite each other to form a heat dissipation channel, which can accelerate the airflow through the heat dissipation channel and facilitate heat dissipation. The transformer 1 is located between the first circuit board 2 and the second circuit board 3, at the inlet or outlet of the heat dissipation channel, which also facilitates heat dissipation. The first circuit board 2 is electrically connected to the transformer 1 through the first lead of the secondary side of the transformer 1. The first lead of the transformer 1 can be fixed to the first circuit board 2, for example, by soldering or plugging. The second circuit board 3 is electrically connected to the transformer 1 through the second lead of the secondary side of the transformer 1. The second lead of the transformer 1 can be fixed to the second circuit board 3, for example, by soldering or plugging. The first circuit board 2 and the second circuit board 3 are respectively connected to the output terminal 4.

[0048] The electrical components connected to transformer 1 are respectively disposed on the first circuit board 2 and the second circuit board 3, thereby dispersing the heat generated by the power components connected to transformer 1 onto the two circuit boards, which is beneficial for heat dissipation. For example, the input components on the primary side of transformer 1 are disposed on the first circuit board 2, and the detection components on the secondary side of transformer 1 are disposed on the second circuit board 3; or, the detection components on the secondary side of transformer 1 are disposed on the first circuit board 2, and the input components on the primary side of transformer 1 are disposed on the second circuit board 3. For example, the power components connected to the secondary side of transformer 1 are evenly distributed on the first circuit board 2 and the second circuit board 3. The detection components may include a current detection unit, which is set according to actual needs, and this embodiment of the invention is not limited. The input components may include a first inductor and a first capacitor, which are set according to actual needs, and this embodiment of the invention is not limited. The power components disposed on the first circuit board 2 are the first group of power components, and the power components disposed on the second circuit board 3 are the second group of power components. The first group of power components may include a second capacitor, a third capacitor, a second inductor, a rectifier switch, etc., which are set according to actual needs, and this embodiment of the application is not limited. The second group of power components may include a second capacitor, a third capacitor, a second inductor, a rectifier switch, and other devices, which may be configured according to actual needs. This application embodiment does not limit the configuration.

[0049] The secondary side of transformer 1 is electrically connected to the input terminals of the first group of power components and the second group of power components, respectively. The output terminal of the first group of power components is electrically connected to output terminal 4, and the input terminal of the second group of power components is electrically connected to output terminal 4. The output current of the secondary side of transformer 1 passes through the first group of power components and the second group of power components, and is then concentrated at output terminal 4 to provide the power supply current. This reduces the current flowing through the circuit board and disperses heat across the two circuit boards for heat dissipation. The first end of output terminal 4 can be fixed to the first circuit board 2 by means of plugging or other methods, and the second end of output terminal 4 can be fixed to the second circuit board 3 by means of plugging or other methods.

[0050] The power supply module provided in this application includes a transformer; a first circuit board fixedly connected to a first output terminal of the transformer; a second circuit board fixedly connected to a second output terminal of the transformer; output terminals connected to the first circuit board and the second circuit board respectively; an input element disposed on the primary side of the transformer and a detection element disposed on the secondary side of the transformer, the input element and the detection element being fixed on different circuit boards; a first group of power elements fixed to the first circuit board, the input terminal of the first group of power elements being electrically connected to the secondary side of the transformer, and the output terminal of the first group of power elements being connected to the output terminal; a second group of power elements fixed to the second circuit board, the input terminal of the second group of power elements being electrically connected to the secondary side of the transformer, and the input terminal of the second group of power elements being connected to the output terminal; the first circuit board and the second circuit board are arranged opposite to each other to form a heat dissipation channel; the transformer is disposed at the inlet or outlet of the heat dissipation channel, and by forming a heat dissipation channel between the first circuit board and the second circuit board and outputting power supply current through the first circuit board and the second circuit board respectively, the heat dissipation area is increased and the airflow is accelerated while reducing the current flowing through the circuit board, thereby improving the heat dissipation capacity of the power supply module.

[0051] like Figure 3 , Figure 6 and Figure 7 As shown, based on the above embodiments, the input element further includes a first inductor 6 and a first capacitor 6, the first capacitor 5 is connected to the first inductor 6, and the first inductor 6 is connected to the primary output terminal of the transformer 1.

[0052] Specifically, the first inductor 6 and the first capacitor 5 can be soldered onto the first circuit board 2. Correspondingly, the primary output terminal of the transformer 1 is soldered onto the first circuit board 2, and the first inductor 6 is electrically connected to the transformer 1 through the primary output terminal of the transformer 1; or, the first inductor 6 and the first capacitor 5 can be soldered onto the second circuit board 3. Correspondingly, the primary output terminal of the transformer 1 is soldered onto the second circuit board 3, and the first inductor 6 is electrically connected to the transformer 1 through the primary output terminal of the transformer 1.

[0053] The first inductor 6 and the first capacitor 5 can form an LC resonant circuit, which can be used to implement soft switching. The specific number of the first inductor 6 and the first capacitor 5 can be selected according to actual needs, and this application embodiment does not limit it.

[0054] Based on the above embodiments, the first capacitor 5 is further described as a thin-film capacitor or a ceramic capacitor.

[0055] like Figure 3As shown, the detection element includes a current detection unit 7, which is used to detect the secondary output current of the transformer 1. The current detection unit 7 is disposed on the first circuit board 2 or the second circuit board 3. The current detection unit 7 can be a resistor or a Hall current sensor.

[0056] To balance heat dissipation between the first circuit board 2 and the second circuit board 3, when the first inductor 6 and the first capacitor 5 are mounted on the first circuit board 2, the current detection unit 7 can be mounted on the second circuit board 3.

[0057] Based on the above embodiments, the number of components included in the first group of power components is the same as the number of components included in the second group of power components, and the types of components included in the first group of power components are the same as the types of components included in the second group of power components.

[0058] By setting the number of components in the first group of power components to be the same as the number of components in the second group of power components, the heat generated by the first group of power components and the second group of power components can be distributed as evenly as possible on the first circuit board 2 and the second circuit board 3, which is beneficial to improving the heat dissipation efficiency of the circuit boards.

[0059] For example, the first group of power components and the second group of power components include the same number of second capacitors, third capacitors, second inductors and rectifier switches.

[0060] Based on the above embodiments, the first circuit board 2 and the second circuit board 3 are further arranged in parallel. The airflow direction generated by the fan used for cooling the power supply module is the same as the parallel direction of the first circuit board 2 and the second circuit board 3, which helps the airflow to remove the heat from the first circuit board 2 and the second circuit board 3. Furthermore, the heat dissipation airflow channel formed between the first circuit board 2 and the second circuit board 3 helps to accelerate air circulation and improve heat dissipation efficiency.

[0061] like Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, based on the above embodiments, the first group of power elements and the second group of power elements further include at least one of the following: a second capacitor 8, a third capacitor 9, a second inductor 10, and a rectifier switch 11.

[0062] Specifically, the second capacitor 8 is used for filtering and smoothing the voltage; it can be a ceramic capacitor. The third capacitor 9 is larger than the second capacitor 8 and is used for energy storage and instantaneous current compensation, reducing voltage fluctuations caused by sudden load changes; it can be an electrolytic capacitor. The second inductor 10 is used for filtering and smoothing the current; it can form a filter circuit with the second capacitor 8. The rectifier switch 11 is used for rectification and can be a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) switch or a diode device.

[0063] Based on the above embodiments, the rectifier switch 11 further adopts a MOSFET switch or a diode.

[0064] Based on the above embodiments, the second capacitor 8 is further used for filtering to smooth the voltage. The third capacitor 9 is used for energy storage to reduce voltage fluctuations caused by sudden load changes in the power supply.

[0065] Based on the above embodiments, the transformer 1 further includes at least one set of sub-transformers, each set of sub-transformers corresponding to a first set of power elements, a second set of power elements, output terminals, input elements, and detection elements.

[0066] like Figure 8 As shown, the power supply module includes three sets of sub-transformers. Each set of sub-transformers corresponds to a first set of power components, a second set of power components, output terminal 4, input components, and detection components. The first set of power components includes a second capacitor 8-1, a third capacitor 9-1, a second inductor 10-1, and a rectifier switch 11-1. The second set of power components includes a second capacitor 8-2, a third capacitor 9-2, a second inductor 10-2, and a rectifier switch 11-2. The input components include a first capacitor 5 and a first inductor 6. The detection component is a current detection component. Each set of sub-transformers has corresponding rectifier switches 11-1 and 11-2, a second capacitor 8-1, and a second capacitor 8-2. Each set of sub-transformers shares the third capacitor 9-2, the second inductor 10-2, the third capacitor 9-1, and the second inductor 10-1. The primary side of each set of sub-transformers is electrically connected to the second terminal of the first inductor 6, and the first terminal of the first inductor 6 is electrically connected to the first capacitor 5. A current detection unit (not shown in the figure) detects the secondary output current of the transformer. The first capacitor 5 can also be connected to a power conversion switch, which is used for step-down chopping. The power conversion switch can be mounted on the same circuit board as the connected first capacitor 5, or it can be mounted on another circuit board (for example, the power conversion switch can be mounted on a third circuit board). The configuration can be determined according to actual needs, and this embodiment of the invention does not impose any limitations. It is understood that the power supply module can also include a grounding terminal.

[0067] The primary side output terminal of each sub-transformer is electrically connected to the first inductor 6, and the first inductor 6 is connected to the first capacitor 5.

[0068] The first output terminal of the secondary side of each sub-transformer is electrically connected to the first terminal of the rectifier switch 11-1 of the first group of power elements, and the second terminal of the rectifier switch 11-1 is electrically connected to the first terminal of the second capacitor 8-1. The second terminal of each second capacitor 8-1 of the first group of power elements is electrically connected to the first terminal of the second inductor 10-1, the second terminal of the second inductor 10-1 is connected to the first terminal of the third capacitor 9-1, and the second terminal of the third capacitor 9-1 is electrically connected to the output terminal 4.

[0069] The second output terminal of the secondary side of each sub-transformer is electrically connected to the first terminal of the rectifier switch 11-2 of the second group of power elements. The second terminal of the rectifier switch 11-2 is electrically connected to the first terminal of the second capacitor 8-2. The second terminal of each second capacitor 8-2 of the second group of power elements is electrically connected to the first terminal of the second inductor 10-2. The second terminal of the second inductor 10-2 is connected to the first terminal of the third capacitor 9-2. The second terminal of the third capacitor 9-2 is electrically connected to the output terminal 4.

[0070] The power supply module provided in this application has the following advantages compared with the prior art:

[0071] (1) The power supply module consists of two PCBs, one above the other, with a heat dissipation channel formed between them, which is beneficial for heat dissipation;

[0072] (2) The power supply module outputs power supply current on two PCBs, one above the other, and then the output is collected at the output terminal. This can reduce the current flowing through the PCB and disperse heat dissipation on the PCB, resulting in better heat dissipation performance.

[0073] (3) The resonant inductor and other heat-generating components of the power supply module are placed in the center, and the two PCB boards are raised, which is more suitable for the airflow of the heat dissipation channel.

[0074] (4) The upper and lower lead wire structure of the secondary winding of the transformer divides the current that is concentrated on one PCB in the existing technology into two PCBs, thereby reducing the current flowing through each PCB, reducing the current stress on the PCB, and making it more suitable for heat dissipation applications in high current scenarios.

[0075] The power supply module provided in this application embodiment is compatible with high-power, low-voltage, high-current power modules for Artificial Intelligence (AI) / server power supplies. For example, it can be an external 760VDC power supply module with a rated current of several hundred amps.

[0076] In the description of this specification, the references to terms such as "an embodiment," "a specific embodiment," "some embodiments," "for example," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A power supply module, characterized in that, The power supply module includes: transformer; A first circuit board fixedly connected to the first output terminal of the transformer; A second circuit board is fixedly connected to the second output terminal of the transformer; the first circuit board and the second circuit board are used to shunt the output current of the transformer; The output terminals are respectively connected to the first circuit board and the second circuit board, and the output terminals are used to collect the output current; An input element is disposed on the primary side of the transformer and a detection element is disposed on the secondary side of the transformer. The input element and the detection element are fixed on different circuit boards. A first group of power components is fixed to the first circuit board. The input terminal of the first group of power components is electrically connected to the secondary side of the transformer, and the output terminal of the first group of power components is connected to the output terminal. A second set of power components is fixed to the second circuit board. The input terminal of the second set of power components is electrically connected to the secondary side of the transformer, and the output terminal of the second set of power components is connected to the output terminal. The first circuit board and the second circuit board are arranged opposite each other to form a heat dissipation duct; the transformer is arranged at the inlet or outlet of the heat dissipation duct.

2. The power supply module according to claim 1, characterized in that, The input element includes a first inductor and a first capacitor, the first capacitor being connected to the first inductor, and the first inductor being connected to the primary output terminal of the transformer.

3. The power supply module according to claim 2, characterized in that, The first capacitor is a thin-film capacitor or a ceramic capacitor.

4. The power supply module according to claim 1, characterized in that, The detection element includes a current detection unit, which is used to detect the secondary output current of the transformer.

5. The power supply module according to claim 1, characterized in that, The first group of power components includes the same number of components as the second group of power components, and the first group of power components includes the same types of components as the second group of power components.

6. The power supply module according to claim 1, characterized in that, The first circuit board and the second circuit board are arranged in parallel.

7. The power supply module according to claim 1, characterized in that, The first group of power components and the second group of power components each include at least one of the following components: a second capacitor, a third capacitor, a second inductor, and a rectifier switch.

8. The power supply module according to claim 7, characterized in that, The rectifier switch is either a MOSFET switch or a diode.

9. The power supply module according to claim 7, characterized in that, The second capacitor is used for filtering, and the third capacitor is used for energy storage.

10. The power supply module according to any one of claims 1 to 9, characterized in that, The transformer includes at least one set of sub-transformers, each set of sub-transformers corresponding to a first set of power elements, a second set of power elements, output terminals, input elements, and detection elements.

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