Power module

Abstract

This application provides a power module including a transformer and a rectifier circuit. The transformer includes a magnetic core and windings. The rectifier circuit is electrically connected to the windings. The magnetic core further includes: a first cover plate; a second cover plate disposed opposite to the first cover plate; a first magnetic post; and a second magnetic post with a magnetic flux direction opposite to that of the first magnetic post. The first and second magnetic posts are connected between the first and second cover plates. The windings further include: a first winding wound on the first magnetic post; and a second winding wound on the second magnetic post, wherein the first and second windings have a shared winding portion, at least a portion of which is located between the first and second magnetic posts. The rectifier circuit further includes: a plurality of rectifier components, including a first rectifier component, a second rectifier component, a third rectifier component, and a fourth rectifier component electrically connected to form a full-bridge rectifier circuit.

Description

Technical Field

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

[0002] Currently, the market size for cloud (data centers) and edge devices (mobile phones, iPads, etc.) is growing rapidly. However, this growth also brings several challenges. For example, as smart ICs become more functional and consume more power, the number of components on motherboards increases, requiring power modules to have higher power density or greater current output capacity per module. Furthermore, the increasing computing power of smart ICs places higher demands on the dynamic performance of power modules. Multiphase parallel power supply is an effective solution for achieving high-current power supply. When both high efficiency and high dynamics are required, transformer-based power modules can efficiently achieve voltage transformation and hold an important position in power electronics.

[0003] Transformers convert electrical energy through electromagnetic induction via changes in magnetic flux in the primary and secondary circuits, based on Faraday's law of electromagnetic induction. Among the secondary rectifier circuits, half-bridge full-wave rectification and full-bridge rectifier circuits are the most basic and widely used. When multiple phases are connected in parallel for half-bridge full-wave or full-wave rectification, more rectifier components, such as diodes or MOSFETs, are often required. Each increase in power rating often necessitates a significant addition of rectifier components, hindering the refinement of power ratings and cost reduction. Furthermore, the connections between windings are complex, complicating structural integration and fabrication. The connection between rectifier components and windings is prone to current concentration, resulting in substantial connection losses. In power electronics, transformers are generally used in step-down power supply modules, where rectifier circuits typically operate under low-voltage, high-current conditions, making them even more sensitive to connection losses.

[0004] Therefore, there is an urgent need for a power module that can solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a power module, including a transformer and a rectifier circuit. The transformer includes a magnetic core and windings, and the rectifier circuit is electrically connected to the windings. The magnetic core further comprises:

[0006] First cover plate;

[0007] The second cover plate is disposed opposite to the first cover plate;

[0008] The first magnetic column; and

[0009] The second magnetic column has a magnetic flux direction opposite to that of the first magnetic column, and the first and second magnetic columns are connected between the first and second cover plates.

[0010] The winding further includes:

[0011] A first winding is wound around the first magnetic post; and

[0012] A second winding is wound around the second magnetic post, wherein the first winding and the second winding have a shared winding portion, at least a portion of which is located between the first magnetic post and the second magnetic post;

[0013] The rectifier circuit further includes:

[0014] Multiple rectifier components, including a first rectifier component, a second rectifier component, a third rectifier component, and a fourth rectifier component, are electrically connected to form a full-bridge rectifier circuit.

[0015] In some embodiments, at least one of the first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly is connected in series on the shared winding portion.

[0016] In some embodiments, the shared winding portion includes a first shared winding portion and a second shared winding portion, both of which are at least partially located between the first magnetic post and the second magnetic post. A first winding wound on the outside of the first magnetic post and a second winding wound on the outside of the second magnetic post are electrically connected to form a first annular winding portion, and both ends of the first shared winding portion and the second shared winding portion are electrically connected to the first annular winding portion.

[0017] The first rectifier and the second rectifier are connected in series on the first shared winding section, and the third rectifier and the fourth rectifier are connected in series on the second shared winding section. The negative terminals of the first rectifier and the second rectifier are electrically connected to the first annular winding section, and the positive terminals of the first rectifier and the second rectifier are both electrically connected to the negative output terminal GND of the power module. The positive terminals of the third rectifier and the fourth rectifier are both electrically connected to the first annular winding section, and the negative terminals of the third rectifier and the fourth rectifier are both electrically connected to the positive output terminal Vo of the power module.

[0018] In some embodiments, the first shared winding portion and the second shared winding portion have a multiplexed shared winding portion and two branches. One end of the multiplexed shared winding portion is electrically connected to the first annular winding portion, and the other end extends through the space between the first magnetic post and the second magnetic post to the upper or lower side of the first magnetic post and the second magnetic post. The other end of the multiplexed shared winding portion is then electrically connected to the first annular winding portion through the two branches. The first rectifier component and the second rectifier component are connected in series on one branch, and the third rectifier component and the fourth rectifier component are connected in series on the other branch.

[0019] In some embodiments, the first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly are all located above the first magnetic post and the second magnetic post, or all are located below the first magnetic post and the second magnetic post.

[0020] In some embodiments, the first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly are all disposed between the first magnetic post and the second magnetic post, or the first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly are located above or below the first magnetic post and the second magnetic post.

[0021] In some embodiments, when the magnetic flux in the first magnetic column exits perpendicularly to the paper and the magnetic flux in the second magnetic column enters perpendicularly to the paper, the current in the first winding flows counterclockwise and the current in the second winding flows clockwise. The first rectifier assembly and the fourth rectifier assembly are turned on, and the second rectifier assembly and the third rectifier assembly are turned off. The negative output terminal GND of the power module, the first rectifier assembly, the first winding, the fourth rectifier assembly, and the positive output terminal Vo of the power module are sequentially electrically connected around the first magnetic column to form a first current loop. The negative output terminal GND of the power module, the first rectifier assembly, the second winding, the fourth rectifier assembly, and the positive output terminal Vo of the power module are sequentially electrically connected around the second magnetic column to form a second current loop.

[0022] When the magnetic flux in the first magnetic column enters perpendicularly to the paper and the magnetic flux in the second magnetic column exits perpendicularly to the paper, the current in the first winding flows clockwise and the current in the second winding flows counterclockwise. The second rectifier assembly and the third rectifier assembly are turned on, while the first rectifier assembly and the fourth rectifier assembly are turned off. The negative output terminal GND of the power module, the second rectifier assembly, the first winding, the third rectifier assembly, and the positive output terminal Vo of the power module are sequentially electrically connected around the first magnetic column to form a third current loop. The negative output terminal GND of the power module, the second rectifier assembly, the second winding, the third rectifier assembly, and the positive output terminal Vo of the power module are sequentially electrically connected around the second magnetic column to form a fourth current loop.

[0023] In some embodiments, an outer conductor is provided on the outer side of the first magnetic post and the outer side of the second magnetic post. The outer conductor includes a first outer conductor, a second outer conductor and a third outer conductor. The first outer conductor is formed by sequentially connecting a first winding around the upper surface of the first magnetic post and a second winding around the upper surface of the second magnetic post. The second outer conductor and the third outer conductor are each formed by sequentially connecting a first winding around the lower surface of the first magnetic post and a second winding around the lower surface of the second magnetic post.

[0024] A first shared winding portion and a second shared winding portion are provided between the first magnetic post and the second magnetic post. One end of the first shared winding portion is electrically connected to the first outer conductor and the other end is electrically connected to the second outer conductor. One end of the second shared winding portion is electrically connected to the first outer conductor and the other end is electrically connected to the third outer conductor.

[0025] The plurality of rectifier components further includes a fifth rectifier component and a sixth rectifier component. The third rectifier component is connected in series in the circuit where the second outer conductor surrounds the first magnetic post. The fourth rectifier component is connected in series in the circuit where the third outer conductor surrounds the first magnetic post. The first rectifier component is connected in series in the first shared winding portion. The second rectifier component is connected in series in the second shared winding portion. The fifth rectifier component is connected in series in the circuit where the second outer conductor surrounds the second magnetic post. The sixth rectifier component is connected in series in the circuit where the third outer conductor surrounds the second magnetic post.

[0026] The positive terminals of the first, third, and fifth rectifier components are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the second, fourth, and sixth rectifier components are all electrically connected to the positive output terminal Vo of the power module.

[0027] In some embodiments, the plurality of rectifier components further include a fifth rectifier component, a sixth rectifier component, a seventh rectifier component, and an eighth rectifier component, which are electrically connected to form another full-bridge rectifier circuit;

[0028] An outer conductor is provided on the outer side of the first magnetic post and the outer side of the second magnetic post. The outer conductor includes a first outer conductor, a second outer conductor and a third outer conductor. The first outer conductor is formed by sequentially connecting a first winding around the upper surface of the first magnetic post and a second winding around the upper surface of the second magnetic post. The second outer conductor and the third outer conductor are each formed by sequentially connecting a first winding around the lower surface of the first magnetic post and a second winding around the lower surface of the second magnetic post.

[0029] A shared winding section is provided between the first magnetic post and the second magnetic post. One end of the shared winding section is electrically connected to the first outer conductor, and the other end is electrically connected to the second outer conductor and the third outer conductor.

[0030] The first rectifier and the second rectifier are connected in series on the line of the second outer conductor surrounding the first magnetic post; the third rectifier and the fourth rectifier are connected in series on the line of the third outer conductor surrounding the first magnetic post; the fifth rectifier and the sixth rectifier are connected in series on the line of the second outer conductor surrounding the second magnetic post; and the seventh rectifier and the eighth rectifier are connected in series on the line of the third outer conductor surrounding the second magnetic post.

[0031] The positive terminals of the third, fourth, seventh, and eighth rectifier components are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the first, second, fifth, and sixth rectifier components are all electrically connected to the positive output terminal Vo of the power module.

[0032] In some embodiments, the rectifier circuit further includes a fifth rectifier component, a sixth rectifier component, a seventh rectifier component, and an eighth rectifier component.

[0033] In some embodiments, the transformer further includes a third magnetic column and a third winding wound around the third magnetic column, wherein the first magnetic column, the second magnetic column and the third magnetic column are arranged linearly in sequence, and the magnetic flux directions of adjacent magnetic columns are opposite, and the third magnetic column is connected between the first cover plate and the second cover plate.

[0034] The magnetic core further includes a first magnetic side post and a second magnetic side post. The first magnetic side post is disposed outside the first magnetic post, and the second magnetic side post is disposed outside the third magnetic post. The first magnetic side post and the second magnetic side post are connected between the first cover plate and the second cover plate. The magnetic flux in the first magnetic side post and the second magnetic side post is half of the magnetic flux of the first magnetic post or the second magnetic post.

[0035] In some embodiments, an outer conductor is provided on the outer side of the first magnetic post, the outer side of the second magnetic post, and the outer side of the third magnetic post. The outer conductor includes a first outer conductor, a second outer conductor, and a third outer conductor. The first outer conductor is formed by sequentially connecting a first winding around the upper surface of the first magnetic post, a second winding around the upper surface of the second magnetic post, and a third winding around the upper surface of the third magnetic post. The second outer conductor and the third outer conductor are each formed by sequentially connecting a first winding around the lower surface of the first magnetic post, a second winding around the lower surface of the second magnetic post, and a third winding around the lower surface of the third magnetic post.

[0036] A first inner conductor and a second inner conductor are provided between the first magnetic edge post and the first magnetic post; a third inner conductor and a fourth inner conductor are provided between the second magnetic edge post and the third magnetic post; a first shared winding portion and a second shared winding portion are provided between the first magnetic post and the second magnetic post; and a third shared winding portion and a fourth shared winding portion are provided between the second magnetic post and the third magnetic post.

[0037] One end of the first inner conductor, the first shared winding portion, the third shared winding portion, and the third inner conductor is electrically connected to the first outer conductor. The other end of the first inner conductor, the first shared winding portion, the third shared winding portion, and the third inner conductor is electrically connected to the second outer conductor. One end of the second inner conductor, the second shared winding portion, the fourth shared winding portion, and the fourth inner conductor is electrically connected to the first outer conductor. The other end of the second inner conductor, the second shared winding portion, the fourth shared winding portion, and the fourth inner conductor is electrically connected to the third outer conductor.

[0038] The fifth rectifier assembly is connected in series with the first inner conductor; the sixth rectifier assembly is connected in series with the second inner conductor; the first rectifier assembly is connected in series with the first shared winding portion; the second rectifier assembly is connected in series with the second shared winding portion; the third rectifier assembly is connected in series with the third shared winding portion; the fourth rectifier assembly is connected in series with the fourth shared winding portion; the seventh rectifier assembly is connected in series with the third inner conductor; and the eighth rectifier assembly is connected in series with the fourth inner conductor.

[0039] The positive terminals of the first, third, fifth, and seventh rectifier components are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the second, fourth, sixth, and eighth rectifier components are all electrically connected to the positive output terminal Vo of the power module.

[0040] In some embodiments, the transformer further includes a third magnetic column, a fourth magnetic column, a third winding wound around the third magnetic column, and a fourth winding wound around the fourth magnetic column. The first magnetic column, the second magnetic column, the third magnetic column, and the fourth magnetic column are arranged in an array, and the magnetic flux directions of adjacent magnetic columns around the perimeter are opposite. The third magnetic column and the fourth magnetic column are connected between the first cover plate and the second cover plate.

[0041] A first winding wound around the outer side of the first magnetic post, a second winding wound around the outer side of the second magnetic post, a third winding wound around the outer side of the third magnetic post, and a fourth winding wound around the outer side of the fourth magnetic post are sequentially electrically connected to form a first annular winding section. The windings between adjacent magnetic posts form a first shared winding section and a second shared winding section. The first shared winding section is electrically connected to form a first cross-shaped winding section, and the second shared winding section is electrically connected to form a second cross-shaped winding section. The first cross-shaped winding section has one node and four endpoints, and the second cross-shaped winding section has one node and four endpoints.

[0042] Four of the following rectifier components—the first, second, third, fourth, fifth, sixth, seventh, and eighth—are connected in series on the first shared winding section between adjacent magnetic pillars. The positive terminals of these four rectifier components are all electrically connected to the nodes of the first cross-shaped winding section. The other four rectifier components are connected in series on the second shared winding section between adjacent magnetic pillars. The negative terminals of these other four rectifier components are all electrically connected to the nodes of the second cross-shaped winding section.

[0043] In some embodiments, the four endpoints of the first cross-shaped winding portion and the four endpoints of the second cross-shaped winding portion are all electrically connected to the first annular winding portion.

[0044] The nodes of the first cross-shaped winding are electrically connected to the negative output terminal GND of the power module, and the nodes of the second cross-shaped winding are electrically connected to the positive output terminal Vo of the power module.

[0045] In some embodiments, a window is provided in the center of the first cover plate or the second cover plate, and lead wires electrically connected to the nodes of the first cross-shaped winding portion and the second cross-shaped winding portion are led out from the window.

[0046] In some embodiments, the winding further includes a second annular winding portion that surrounds the first magnetic post, the second magnetic post, the third magnetic post, and the fourth magnetic post;

[0047] The four endpoints of the first cross-shaped winding section are electrically connected to the first annular winding section, and the four endpoints of the second cross-shaped winding section are electrically connected to the second annular winding section.

[0048] The nodes of the first cross-shaped winding section are electrically connected to the nodes of the second cross-shaped winding section;

[0049] The first annular winding is electrically connected to the positive output terminal Vo of the power module, and the second annular winding is electrically connected to the negative output terminal GND of the power module.

[0050] The present invention also provides a power module, including a transformer and a rectifier circuit, wherein the transformer includes a magnetic core and windings, and the rectifier circuit is electrically connected to the windings, characterized in that the magnetic core further includes:

[0051] First cover plate;

[0052] The second cover plate is disposed opposite to the first cover plate;

[0053] The first magnetic column; and

[0054] The second magnetic column has a magnetic flux direction opposite to that of the first magnetic column, and the first and second magnetic columns are connected between the first and second cover plates.

[0055] The winding further includes:

[0056] The first winding is wound around the first magnetic post;

[0057] The third winding is wound around the second magnetic post;

[0058] A second winding is wound around the first magnetic post; and

[0059] A fourth winding is wound around the second magnetic post, wherein the first winding and the third winding have a first shared winding portion, the second winding and the fourth winding have a second shared winding portion, at least a portion of the first shared winding portion is located between the first magnetic post and the second magnetic post, and at least a portion of the second shared winding portion is located between the first magnetic post and the second magnetic post.

[0060] The rectifier circuit further includes:

[0061] Multiple rectifier components, including a first rectifier component and a second rectifier component, are electrically connected to form a half-bridge full-wave rectifier circuit.

[0062] In some embodiments, at least one of the first rectifier assembly and the second rectifier assembly is connected in series on the first shared winding portion or the second shared winding portion.

[0063] In some embodiments, a first winding wound around the outside of the first magnetic post and a third winding wound around the outside of the second magnetic post are electrically connected to form a first annular winding portion, and a second winding wound around the outside of the first magnetic post and a fourth winding wound around the outside of the second magnetic post are electrically connected to form a second annular winding portion. One end of the first shared winding portion is electrically connected to the first annular winding portion and the other end is electrically connected to the second annular winding portion. One end of the second shared winding portion is electrically connected to the first annular winding portion and the other end is electrically connected to the second annular winding portion.

[0064] In some embodiments, the first rectifier component is connected in series on the first shared winding portion, the second rectifier component is connected in series on the second shared winding portion, the negative terminal of the second rectifier component is electrically connected to the positive output terminal Vo of the power module, and the positive terminal of the first rectifier component is electrically connected to the negative output terminal GND of the power module.

[0065] In some embodiments, the first rectifier component and the second rectifier component are both connected in series on the second shared winding portion, and the negative terminals of the first rectifier component and the second rectifier component are both electrically connected to the positive output terminal Vo of the power module, and the first shared winding portion is electrically connected to the negative output terminal GND of the power module.

[0066] In some embodiments, the first rectifier component and the second rectifier component are both connected in series on the first shared winding portion, and the positive terminals of the first rectifier component and the second rectifier component are both electrically connected to the negative output terminal GND of the power module, and the second shared winding portion is electrically connected to the positive output terminal Vo of the power module.

[0067] In some embodiments, both the first rectifier assembly and the second rectifier assembly are located between the first magnetic post and the second magnetic post;

[0068] Alternatively, both the first rectifier component and the second rectifier component may be located above or below the first and second magnetic pillars.

[0069] In some embodiments, the plurality of rectifier components further includes a third rectifier component;

[0070] The first rectifier assembly is connected in series on the first shared winding section, and the second rectifier assembly and the third rectifier assembly are connected in series on the second annular winding section;

[0071] Alternatively, the first rectifier assembly is connected in series on the second shared winding section, and the second rectifier assembly and the third rectifier assembly are connected in series on the first annular winding section.

[0072] In some embodiments, the plurality of rectifier components further include a third rectifier component and a fourth rectifier component;

[0073] The first rectifier assembly is connected in series on the line of the second annular winding portion surrounding the first magnetic post; the second rectifier assembly is connected in series on the line of the first annular winding portion surrounding the first magnetic post; the third rectifier assembly is connected in series on the line of the first annular winding portion surrounding the second magnetic post; and the fourth rectifier assembly is connected in series on the line of the second annular winding portion surrounding the second magnetic post.

[0074] The positive terminals of the first rectifier component and the fourth rectifier component are both electrically connected to the second shared winding section, the second shared winding section is electrically connected to the negative output terminal GND of the power module, the negative terminals of the second rectifier component and the third rectifier component are both electrically connected to the first shared winding section, and the first shared winding section is electrically connected to the positive output terminal Vo of the power module.

[0075] In some embodiments, the first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly are all disposed above or below the first magnetic post and the second magnetic post;

[0076] Alternatively, the first rectifier assembly and the second rectifier assembly are respectively disposed on the upper and lower sides of the first magnetic post and the second magnetic post, and the third rectifier assembly and the fourth rectifier assembly are respectively disposed on the upper and lower sides of the first magnetic post and the second magnetic post.

[0077] Alternatively, the first rectifier and the second rectifier are both disposed on one side of the upper and lower sides of the first and second magnetic pillars, and the third rectifier and the fourth rectifier are both disposed on the other side of the upper and lower sides of the first and second magnetic pillars.

[0078] Alternatively, the first rectifier component and the second rectifier component are both disposed to the left of the first magnetic post, and the third rectifier component and the fourth rectifier component are both disposed to the right of the second magnetic post.

[0079] In some embodiments, the rectifier circuit further includes a third rectifier component and a fourth rectifier component.

[0080] In some embodiments, the transformer further includes a third magnetic post and a fifth and a sixth winding wound around the third magnetic post. The third and fifth windings have a third shared winding portion, and the fourth and sixth windings have a fourth shared winding portion. The first, second, and third magnetic posts are arranged linearly in sequence, and the magnetic flux directions of adjacent magnetic posts are opposite. The third magnetic post is connected between the first cover plate and the second cover plate.

[0081] The magnetic core also includes a first magnetic side post and a second magnetic side post. The first magnetic side post is disposed outside the first magnetic post, and the second magnetic side post is disposed outside the third magnetic post. The first magnetic side post and the second magnetic side post are connected between the first cover plate and the second cover plate. The magnetic flux in the first magnetic side post and the second magnetic side post is half of the magnetic flux of the first magnetic post or the second magnetic post.

[0082] An outer conductor is provided on the outer side of the first magnetic post, the outer side of the second magnetic post, and the outer side of the third magnetic post. The outer conductor includes a first outer conductor, a second outer conductor, a third outer conductor, and a fourth outer conductor. The first outer conductor is formed by sequentially connecting a first winding around the upper surface of the first magnetic post, a third winding around the upper surface of the second magnetic post, and a fifth winding around the upper surface of the third magnetic post. The second outer conductor is formed by sequentially connecting a second winding around the upper surface of the first magnetic post, a fourth winding around the upper surface of the second magnetic post, and a sixth winding around the upper surface of the third magnetic post. The third outer conductor is formed by sequentially connecting a second winding around the lower surface of the first magnetic post, a fourth winding around the lower surface of the second magnetic post, and a fifth winding around the lower surface of the third magnetic post. The fourth outer conductor is formed by sequentially connecting a first winding around the lower surface of the first magnetic post, a third winding around the lower surface of the second magnetic post, and a sixth winding around the lower surface of the third magnetic post.

[0083] A first inner conductor and a second inner conductor are provided between the first magnetic edge post and the first magnetic post; a third inner conductor and a fourth inner conductor are provided between the second magnetic edge post and the third magnetic post; a first shared winding portion and a second shared winding portion are provided between the first magnetic post and the second magnetic post; and a third shared winding portion and a fourth shared winding portion are provided between the second magnetic post and the third magnetic post.

[0084] One end of the first inner conductor is electrically connected to the first outer conductor, and the other end is electrically connected to the fourth outer conductor. One end of the second inner conductor is electrically connected to the second outer conductor, and the other end is electrically connected to the third outer conductor. One end of the third inner conductor is electrically connected to the first outer conductor, and the other end is electrically connected to the third outer conductor. One end of the fourth inner conductor is electrically connected to the second outer conductor, and the other end is electrically connected to the fourth outer conductor. One end of the first shared winding portion is electrically connected to the first outer conductor, and the other end is electrically connected to the third outer conductor. One end of the second shared winding portion is electrically connected to the second outer conductor, and the other end is electrically connected to the fourth outer conductor. One end of the third shared winding portion is electrically connected to the first outer conductor, and the other end is electrically connected to the fourth outer conductor. One end of the fourth shared winding portion is electrically connected to the second outer conductor, and the other end is electrically connected to the third outer conductor.

[0085] In some embodiments, the first rectifier assembly is connected in series with the first inner conductor, the second rectifier assembly is connected in series with the second shared winding portion, the third rectifier assembly is connected in series with the third shared winding portion, and the fourth rectifier assembly is connected in series with the fourth inner conductor;

[0086] The negative terminals of the first rectifier component, the second rectifier component, the third rectifier component, and the fourth rectifier component are electrically connected to the fourth outer conductor. The third outer conductor is electrically connected to the negative output terminal GND of the power module, and the fourth outer conductor is electrically connected to the positive output terminal Vo of the power module.

[0087] In some embodiments, the transformer further includes a third magnetic column, a fourth magnetic column, and a fifth and a sixth winding wound around the third magnetic column, and a seventh and an eighth winding wound around the fourth magnetic column. The first, second, third, and fourth magnetic columns are arranged in an array, and the magnetic flux directions of adjacent magnetic columns around the perimeter are opposite. The third and fourth magnetic columns are connected between the first cover plate and the second cover plate.

[0088] A first winding wound around the outer side of the first magnetic post, a third winding wound around the outer side of the second magnetic post, a fifth winding wound around the outer side of the third magnetic post, and a seventh winding wound around the outer side of the fourth magnetic post are sequentially electrically connected to form a first annular winding portion. A second winding wound around the outer side of the first magnetic post, a fourth winding wound around the outer side of the second magnetic post, a sixth winding wound around the outer side of the third magnetic post, and an eighth winding wound around the outer side of the fourth magnetic post are sequentially electrically connected to form a second annular winding portion. The windings between adjacent magnetic posts form a first shared winding portion and a second shared winding portion. The first shared winding portion is electrically connected to form a first cross-shaped winding portion, and the second shared winding portion is electrically connected to form a second cross-shaped winding portion.

[0089] The first cross-shaped winding section has one node and four endpoints. Two of the spaced-apart endpoints of the first cross-shaped winding section are electrically connected to the first annular winding section, and the other two endpoints of the first cross-shaped winding section are electrically connected to the second annular winding section. The second cross-shaped winding section has one node and four endpoints. Two of the spaced-apart endpoints of the second cross-shaped winding section are electrically connected to the first annular winding section, and the other two endpoints of the second cross-shaped winding section are electrically connected to the second annular winding section.

[0090] The two endpoints of the second cross-shaped winding that are electrically connected to the first annular winding are adjacent to the two endpoints of the first cross-shaped winding that are electrically connected to the second annular winding. The two endpoints of the second cross-shaped winding that are electrically connected to the second annular winding are adjacent to the two endpoints of the first cross-shaped winding that are electrically connected to the first annular winding.

[0091] In some embodiments, the first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly are respectively connected in series on the first shared winding portion between each adjacent magnetic post. The negative terminals of the first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly are all electrically connected to the nodes of the first cross-shaped winding portion. The nodes of the first cross-shaped winding portion are electrically connected to the positive output terminal Vo of the power module, and the nodes of the second cross-shaped winding portion are electrically connected to the negative output terminal GND of the power module.

[0092] In some embodiments, the first rectifier component and the third rectifier component are connected in series on the first shared winding section, and the second rectifier component and the fourth rectifier component are connected in series on the second shared winding section. The positive terminals of the first rectifier component and the third rectifier component are electrically connected to the nodes of the first cross-shaped winding section, and the positive terminals of the second rectifier component and the fourth rectifier component are electrically connected to the nodes of the second cross-shaped winding section. The first annular winding section is electrically connected to the negative output terminal GND of the power module, and the second annular winding section is electrically connected to the positive output terminal Vo of the power module.

[0093] In some embodiments, when the magnetic flux in the first magnetic column flows out perpendicular to the paper and the magnetic flux in the second magnetic column enters perpendicular to the paper, the current in the first winding flows counterclockwise and the current in the third winding flows clockwise. The second rectifier is turned off and the first rectifier is turned on. The current in the first winding flows through the negative output terminal GND of the power module and through the first rectifier and the first winding to the positive output terminal Vo of the power module. The current in the third winding flows through the negative output terminal GND of the power module and through the first rectifier and the third winding to the positive output terminal Vo of the power module.

[0094] When the magnetic flux in the first magnetic column enters perpendicularly to the paper and the magnetic flux in the second magnetic column exits perpendicularly to the paper, the current in the second winding flows clockwise and the current in the fourth winding flows counterclockwise. The first rectifier component is turned off and the second rectifier component is turned on. The current in the second winding flows through the negative output terminal GND of the power module and through the second winding and the second rectifier component to the positive output terminal Vo of the power module. The current in the fourth winding flows through the negative output terminal GND of the power module and through the fourth winding and the second rectifier component to the positive output terminal Vo of the power module.

[0095] In some embodiments, each of the rectifier components includes one or more switching transistors connected in parallel;

[0096] The winding is a flat winding, and the winding is used as the secondary winding of the transformer.

[0097] The embodiments of this application have at least one of the following beneficial effects:

[0098] (1) By setting a shared winding section between the magnetic columns, the winding reuse can be realized, which can reduce the types of electrodes of the windings between the magnetic columns, which is conducive to simplifying the structure and manufacturing process of the transformer and improving the power density of the power module.

[0099] (2) By connecting the rectifier components in series on the shared winding section, the rectifier components can be reused, which can reduce the number of rectifier components, facilitate the refinement of the power level of the power module, and make it easier to select the switching transistors in the rectifier components.

[0100] (3) The arrangement of rectifier components and windings is more conducive to reducing the connection impedance between rectifier components and windings, and improving the efficiency of power supply module. Attached Figure Description

[0101] Figure 1A This is a schematic diagram of the power module structure according to the first embodiment of the present invention.

[0102] Figure 1B for Figure 1A Another structural diagram of the power supply module.

[0103] Figure 1C This is a cross-sectional schematic diagram of the power module according to the first embodiment of the present invention.

[0104] Figure 1D This is a circuit schematic diagram of the power supply module according to the first embodiment of the present invention.

[0105] Figure 1E This is a schematic diagram (I) of the rectifier component arrangement of a power module modified from the first embodiment of the present invention.

[0106] Figure 1F This is a schematic diagram (II) showing the arrangement of the rectifier components in a power module modified from the first embodiment of the present invention.

[0107] Figure 1G This is a schematic diagram (III) of the rectifier component arrangement of a power module modified from the first embodiment of the present invention.

[0108] Figure 1H This is a schematic diagram (four) showing the arrangement of the rectifier components in a power module modified from the first embodiment of the present invention.

[0109] Figure 2A This is a schematic diagram of the power module structure according to the second embodiment of the present invention.

[0110] Figure 2BThis is a schematic diagram (I) of the rectifier component arrangement of the power module modified based on the second embodiment of the present invention.

[0111] Figure 2C This is a schematic diagram (II) showing the arrangement of the rectifier components in a power module modified from the second embodiment of the present invention.

[0112] Figure 2D This is a schematic diagram (III) showing the arrangement of the rectifier components in a power module modified from the second embodiment of the present invention.

[0113] Figure 2E This is a schematic diagram (four) showing the arrangement of the rectifier components in a power module modified from the second embodiment of the present invention.

[0114] Figure 3A This is a schematic diagram of the magnetic column arrangement of the power module according to the third embodiment of the present invention.

[0115] Figure 3B This is a schematic diagram of the power module structure according to the third embodiment of the present invention.

[0116] Figure 3C This is a circuit schematic diagram of the power supply module according to the third embodiment of the present invention.

[0117] Figure 4A This is a schematic diagram of the power module structure according to the fourth embodiment of the present invention (I).

[0118] Figure 4B This is a circuit schematic diagram of the power supply module according to the fourth embodiment of the present invention.

[0119] Figure 4C This is a three-dimensional structural diagram of the power module according to the fourth embodiment of the present invention.

[0120] Figure 4D This is a schematic diagram (II) of the power module structure according to the fourth embodiment of the present invention.

[0121] Figure 5A This is a schematic diagram of the power module structure according to the fifth embodiment of the present invention.

[0122] Figure 5B for Figure 5A Another structural diagram of the power supply module.

[0123] Figure 5C This is a circuit schematic diagram of the power supply module according to the fifth embodiment of the present invention.

[0124] Figure 5D This is a three-dimensional structural diagram of the power module according to the fifth embodiment of the present invention.

[0125] Figure 5EThis is a schematic diagram (a) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention.

[0126] Figure 5F This is a schematic diagram (II) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention.

[0127] Figure 5G This is a schematic diagram (III) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention.

[0128] Figure 5H This is a schematic diagram (IV) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention.

[0129] Figure 5I This is a schematic diagram (V) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention.

[0130] Figure 5J This is a schematic diagram (six) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention.

[0131] Figure 5K This is a schematic diagram (VII) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention.

[0132] Figure 5L This is a schematic diagram (eight) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention.

[0133] Figure 5M This is another circuit schematic diagram of the power supply module according to the fifth embodiment of the present invention.

[0134] Figure 6A This is a schematic diagram of the magnetic column arrangement of the power module according to the sixth embodiment of the present invention.

[0135] Figure 6B This is a schematic diagram of the power module structure according to the sixth embodiment of the present invention.

[0136] Figure 6C This is a schematic diagram of the power module circuit according to the sixth embodiment of the present invention.

[0137] Figure 7A This is a schematic diagram of the power module structure according to the seventh embodiment of the present invention.

[0138] Figure 7B This is a three-dimensional structural diagram of the power module according to the seventh embodiment of the present invention.

[0139] Figure 7C This is a circuit diagram of the power supply module according to the seventh embodiment of the present invention.

[0140] Figure 7D This is a schematic diagram of another structure of the power module according to the seventh embodiment of the present invention.

[0141] Figure 7E This is a three-dimensional structural diagram of the power module according to the seventh embodiment of the present invention.

[0142] Figure 8A This is a circuit schematic of a half-bridge DC-DC converter circuit.

[0143] Figure 8B This is a circuit schematic of a half-bridge LLC circuit.

[0144] Figure 8C This is a circuit schematic of a full-bridge LLC circuit.

[0145] Figure 8D This is a circuit schematic of an LLC circuit that incorporates an autotransformer.

[0146] The attached figures are labeled as follows:

[0147] First magnetic column 11

[0148] Second magnetic column 12

[0149] Third magnetic column 13

[0150] Fourth magnetic column 14

[0151] First magnetic side pillar 16a

[0152] Second magnetic side pillar 16b

[0153] First cover plate 18

[0154] Second cover plate 19

[0155] First winding S1

[0156] Second winding S2

[0157] Third winding S3

[0158] Fourth winding S4

[0159] Fifth winding S5

[0160] Sixth winding S6

[0161] Seventh winding S7

[0162] Eighth winding S8

[0163] First shared winding sections 21a, 21b, 21c1, 21e, 21f1

[0164] Second shared winding sections 22a, 22b, 22c1, 22e, 22f1

[0165] Third shared winding section 21c2, 21f2

[0166] Fourth shared winding section 22c2, 22f2

[0167] First cross-shaped winding section 21d, 21g

[0168] The second cross-shaped winding section 22d, 22g

[0169] Reuse of shared winding section 2122

[0170] First annular winding sections 23a, 23b, 23c, 23d, 23e, 23g

[0171] Second annular winding sections 24b, 24c, 24d, 24e, 24g

[0172] First rectifier component 31

[0173] Second rectifier component 32

[0174] Third rectifier component 33

[0175] Fourth rectifier component 34

[0176] Fifth rectifier module 35

[0177] Sixth rectifier module 36

[0178] Seventh rectifier component 37

[0179] Eighth rectifier module 38

[0180] First outer conductors 40, 40b, 40f

[0181] Second outer conductors 41, 41b, 41f

[0182] Third outer conductors 42, 42b, 42f

[0183] Fourth outer conductor 47f

[0184] First inner conductors 43a, 43b

[0185] Second inner conductors 44a, 44b

[0186] Third inner conductors 45a, 45b

[0187] Fourth inner conductors 46a, 46b Detailed Implementation

[0188] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0189] Please see Figure 1A-1D , Figure 1A This is a schematic diagram of the power module structure according to the first embodiment of the present invention. Figure 1B for Figure 1A Another structural diagram of the power supply module. Figure 1C This is a cross-sectional schematic diagram of the power module according to the first embodiment of the present invention. Figure 1D This is a circuit schematic diagram of the power supply module according to the first embodiment of the present invention.

[0190] like Figure 1A-1D As shown, the power module includes a transformer and a rectifier circuit electrically connected to the transformer. The rectifier circuit is a full-bridge rectifier circuit. The transformer includes a magnetic core and windings, and the rectifier circuit is electrically connected to the windings of the transformer. The magnetic core further includes a first cover plate 18, a second cover plate 19, a first magnetic column 11, and a second magnetic column 12. The second cover plate 19 is disposed opposite to the first cover plate 18. The magnetic flux direction of the second magnetic column 12 is opposite to that of the first magnetic column 11. For example, the magnetic flux direction passing through one of the first magnetic column 11 and the second magnetic column 12 is perpendicular to the plane of the paper when entering, and the magnetic flux direction passing through the other of the first magnetic column 11 and the second magnetic column 12 is perpendicular to the plane of the paper when exiting. The first magnetic column 11 and the second magnetic column 12 are connected between the first cover plate 18 and the second cover plate 19. The winding further includes a first winding S1 and a second winding S2. The first winding S1 is wound on the first magnetic post 11, and the second winding S2 is wound on the second magnetic post 12. The first winding S1 and the second winding S2 have a shared winding section, such as the AC and BD segments of the first winding S1 and the second winding S2. At least a portion of the shared winding section is located between the first magnetic post 11 and the second magnetic post 12. The shared winding section refers to the winding segment shared by the first winding S1 and the second winding S2, where the current flowing through the first winding S1 and the current flowing through the second winding S2 are superimposed. The rectifier circuit further includes multiple rectifier components, such as a first rectifier component 31, a second rectifier component 32, a third rectifier component 33, and a fourth rectifier component 34. The first rectifier component 31, the second rectifier component 32, the third rectifier component 33, and the fourth rectifier component 34 are electrically connected to form a full-bridge rectifier circuit. By setting a shared winding section between the magnetic columns, winding reuse can be achieved, which can reduce the types of electrodes in the windings between the magnetic columns, simplify the structure and manufacturing process of the transformer, and improve the power density of the power module.

[0191] In some embodiments, the winding is a flat winding, and the winding is used as the secondary winding of the transformer.

[0192] In some embodiments, at least one of the first rectifier component 31, the second rectifier component 32, the third rectifier component 33, and the fourth rectifier component 34 is connected in series on the shared winding section. By connecting the rectifier components in series on the shared winding section, the rectifier components are reused, the number of rectifier components can be reduced, the power rating of the power module can be refined, and the selection of switching transistors in the rectifier components can be facilitated.

[0193] like Figure 1A As shown, the shared winding section includes a first shared winding section 21a (e.g., AC segment winding) and a second shared winding section 22a (e.g., BD segment winding). Both the first shared winding section 21a and the second shared winding section 22a are at least partially located between the first magnetic post 11 and the second magnetic post 12. A first winding S1 wound around the outside of the first magnetic post 11 and a second winding S2 wound around the outside of the second magnetic post 12 are electrically connected to form a first annular winding section 23a. Both ends of the first shared winding section 21a and the second shared winding section 22a are electrically connected to the first annular winding section 23a. The first rectifier assembly 31 and the second rectifier assembly 32 are connected in series on the first shared winding section 21a, and the third rectifier assembly 33 and the fourth rectifier assembly 34 are connected in series on the second shared winding section 22a. The first shared winding section 21a is electrically connected to the positive output terminal Vo of the power module, and the second shared winding section 22a is electrically connected to the negative output terminal GND of the power module. Specifically, the negative terminals of the first rectifier component 31 and the second rectifier component 32 are electrically connected to the first annular winding portion 23a, respectively. The positive terminals of both the first rectifier component 31 and the second rectifier component 32 are electrically connected to the negative output terminal GND of the power module. The positive terminals of the third rectifier component 33 and the fourth rectifier component 34 are electrically connected to the first annular winding portion 23a, respectively. The negative terminals of both the third rectifier component 33 and the fourth rectifier component 34 are electrically connected to the positive output terminal Vo of the power module. Each of the first rectifier component 31, the second rectifier component 32, the third rectifier component 33, and the fourth rectifier component 34 is provided with a switching transistor, which can be a diode or a MOSFET, etc. The diode shown in the figure is for illustration only. In other embodiments, each rectifier component may also include multiple switching transistors connected in parallel.

[0194] like Figure 1DAs shown, the first winding S1 and the second winding S2 are connected in parallel, sharing the first rectifier component 31, the second rectifier component 32, the third rectifier component 33, and the fourth rectifier component 34. These components form a full-bridge rectifier circuit. Compared to a traditional two-phase parallel full-bridge rectifier circuit, this design reduces the number of rectifier components by half to achieve a two-phase parallel full-bridge rectifier circuit. Alternatively, it uses the same number of rectifier components as two parallel full-bridge circuits and increases power through parallel connection. This structure also improves the connection distribution between the windings and rectifier components, increasing the number of parallel connection points and resulting in a more balanced current distribution at each connection point, reducing connection losses and improving the efficiency of the power module.

[0195] The following explains in detail the current and magnetic flux characteristics of this power module during operation. For example... Figure 1A As shown, when the magnetic flux in the first magnetic column 11 flows out perpendicular to the paper and the magnetic flux in the second magnetic column 12 enters perpendicular to the paper, the current in the first winding S1 flows counterclockwise and the current in the second winding S2 flows clockwise. The first rectifier assembly 31 and the fourth rectifier assembly 34 are turned on, and the second rectifier assembly 32 and the third rectifier assembly 33 are turned off. The negative output terminal GND of the power module, the first rectifier assembly 31, the first winding S1, the fourth rectifier assembly 34, and the positive output terminal Vo of the power module are sequentially electrically connected around the first magnetic column 11 to form a first current loop. The negative output terminal GND of the power module, the first rectifier assembly 31, the second winding S2, the fourth rectifier assembly 34, and the positive output terminal Vo of the power module are sequentially electrically connected around the second magnetic column 12 to form a second current loop.

[0196] like Figure 1B As shown, when the magnetic flux in the first magnetic column 11 enters perpendicularly to the paper and the magnetic flux in the second magnetic column 12 exits perpendicularly to the paper, the current in the first winding S1 flows clockwise, and the current in the second winding S2 flows counterclockwise. The second rectifier assembly 32 and the third rectifier assembly 33 are turned on, while the first rectifier assembly 31 and the fourth rectifier assembly 34 are turned off. The negative output terminal GND of the power module, the second rectifier assembly 32, the first winding S1, the third rectifier assembly 33, and the positive output terminal Vo of the power module are sequentially electrically connected around the first magnetic column 11 to form a third current loop. The negative output terminal GND of the power module, the second rectifier assembly 32, the second winding S2, the third rectifier assembly 33, and the positive output terminal Vo of the power module are sequentially electrically connected around the second magnetic column 12 to form a fourth current loop. During the alternating change of magnetic flux in the first magnetic column 11 and the second magnetic column 12, the circuit is as follows: Figure 1A and Figure 1BThe alternating magnetic flux in the first magnetic post 11 and the second magnetic post 12 can be generated by a primary coil (not shown in the figure) carrying alternating current wound around the first magnetic post 11 and the second magnetic post 12.

[0197] See Figure 1A , Figure 1E and Figure 1F , Figure 1E This is a schematic diagram (I) of the rectifier component arrangement of a power module modified from the first embodiment of the present invention. Figure 1F This is a schematic diagram (II) showing the arrangement of the rectifier components in a power module modified from the first embodiment of the present invention. Figure 1A As shown, the first rectifier assembly 31, the second rectifier assembly 32, the third rectifier assembly 33, and the fourth rectifier assembly 34 are all disposed between the first magnetic post 11 and the second magnetic post 12. In some embodiments, the first rectifier assembly 31, the second rectifier assembly 32, the third rectifier assembly 33, and the fourth rectifier assembly 34 are located above or below the first and second magnetic posts. Figure 1E As shown, the first rectifier assembly 31 and the third rectifier assembly 33 are disposed above the first magnetic pillar 11 and the second magnetic pillar 12, and the second rectifier assembly 32 and the fourth rectifier assembly 34 are disposed below the first magnetic pillar 11 and the second magnetic pillar 12. Figure 1F As shown, the first rectifier assembly 31 and the second rectifier assembly 32 are disposed below the first magnetic pillar 11 and the second magnetic pillar 12, and the third rectifier assembly 33 and the fourth rectifier assembly 34 are disposed above the first magnetic pillar 11 and the second magnetic pillar 12. In some embodiments, the first rectifier assembly 31 and the second rectifier assembly 32 may also be disposed above the first magnetic pillar 11 and the second magnetic pillar 12, and the third rectifier assembly 33 and the fourth rectifier assembly 34 may be disposed below the first magnetic pillar 11 and the second magnetic pillar.

[0198] Placing the rectifier components above or below the magnetic core facilitates the structural implementation of the power module, the distribution and arrangement of the rectifier components, and heat dissipation. It also has wide applicability, for example, the position and arrangement of the rectifier components can be adjusted to meet different types of rectifier components or heat dissipation requirements.

[0199] See Figure 1G and Figure 1H , Figure 1G This is a schematic diagram (III) of the rectifier component arrangement of the power module, which is a variation of the first embodiment of the present invention. Figure 1H This is a schematic diagram (fourth) showing the arrangement of the rectifier components in a power module modified from the first embodiment of the present invention. Figure 1G and Figure 1HAs shown, the first shared winding portion 21a and the second shared winding portion 22a between the first magnetic post 11 and the second magnetic post 12 can be merged to form a multiplexed shared winding portion 2122. Specifically, the first shared winding portion 21a and the second shared winding portion 22a have a multiplexed shared winding portion 2122 and two branches Z1 and Z2. Figure 1G In the power module shown, one end, for example, the lower end of the multiplexed shared winding section 2122 is electrically connected to the first annular winding section 23a, and the other end, for example, the upper end, extends through the space between the first magnetic post 11 and the second magnetic post 12 to the upper side of the first magnetic post 11 and the second magnetic post 12. The other end, for example, the upper end of the multiplexed shared winding section 2122, is then electrically connected to the first annular winding section 23a through the two branches Z1 and Z2. Figure 1H In the power module shown, one end of the shared winding section 2122 is electrically connected to the first annular winding section 23a, for example, at its upper end, and the other end, for example, at its lower end, extends through the space between the first magnetic post 11 and the second magnetic post 12 to the lower side of the first magnetic post 11 and the second magnetic post 12. The other end of the shared winding section 2122, for example, at its lower end, is then electrically connected to the first annular winding section 23a through the two branches Z1 and Z2. The first rectifier assembly 31 and the second rectifier assembly 32 are connected in series on one branch Z1, and the third rectifier assembly 33 and the fourth rectifier assembly 34 are connected in series on the other branch Z2.

[0200] In some embodiments, such as Figure 1G As shown, the four rectifier components—the first rectifier component 31, the second rectifier component 32, the third rectifier component 33, and the fourth rectifier component 34—can all be disposed on the upper side of the first magnetic post 11 and the second magnetic post 12. Figure 1H As shown, the positions of the four rectifier components are... Figure 1G The arrangement can be reversed; for example, the first rectifier assembly 31, the second rectifier assembly 32, the third rectifier assembly 33, and the fourth rectifier assembly 34 can all be arranged below the first magnetic post 11 and the second magnetic post 12. This application is not limited to the above arrangement, and the arrangement of the rectifier assemblies can be selectively adjusted according to the specific application.

[0201] exist Figure 1G and Figure 1H In the power module shown, branch Z2 is electrically connected to the positive output terminal Vo of the power module, and branch Z1 is electrically connected to the negative output terminal GND of the power module. Specifically, the positive terminals of the first rectifier assembly 31 and the second rectifier assembly 32 are electrically connected to the negative output terminal GND of the power module, and the negative terminals of the third rectifier assembly 33 and the fourth rectifier assembly 34 are electrically connected to the positive output terminal Vo of the power module.

[0202] Reference Figure 2A , Figure 2A This is a schematic diagram of a power module structure according to a second embodiment of the present invention. This power module is similar to the power module shown in Embodiment 1. The rectifier circuit of this power module is a full-bridge rectifier circuit, and the rectifier circuit further includes a fifth rectifier component 35 and a sixth rectifier component 36. For ease of description, the windings disposed outside the first magnetic post 11 and outside the second magnetic post 12 are defined as outer conductors. The outer conductors include a first outer conductor 40, a second outer conductor 41, and a third outer conductor 42. The first outer conductor 40 is formed by sequentially connecting a first winding S1 surrounding the upper surface of the first magnetic post 11 and a second winding S2 surrounding the upper surface of the second magnetic post 12. The second outer conductor 41 is formed by sequentially connecting a first winding S1 surrounding the lower surface of the first magnetic post 11 and a second winding S2 surrounding the lower surface of the second magnetic post 12. The third outer conductor 42 is also formed by sequentially connecting a first winding S1 surrounding the lower surface of the first magnetic post 11 and a second winding S2 surrounding the lower surface of the second magnetic post 12. The second outer conductor 41 is electrically connected to the negative output terminal GND of the power module, and the third outer conductor 42 is electrically connected to the positive output terminal Vo of the power module. The first outer conductor 40 is electrically connected to the second outer conductor 41 and the third outer conductor 42. Specifically, the first outer conductor 40 and the second outer conductor 41 are electrically connected to form a first annular winding portion 23b, and the first outer conductor 40 and the third outer conductor 42 are electrically connected to form a second annular winding portion 24b. For easier description, the outer conductors are provided with endpoints. The two endpoints of the first outer conductor 40 are endpoint g and endpoint i, respectively, located outside the first magnetic post 11 and the second magnetic post 12. The two endpoints of the second outer conductor 41 and the two endpoints of the third outer conductor 42 are electrically connected to the two endpoints of the first outer conductor 40 (e.g., endpoint g and endpoint i).

[0203] In this embodiment, a first shared winding portion 21b (e.g., eh' segment winding) and a second shared winding portion 22b (e.g., Ah' segment winding) are provided between the first magnetic post 11 and the second magnetic post 12. The first shared winding portion 21b and the second shared winding portion 22b have a multiplexed shared winding portion (e.g., hh' segment winding). One end (e.g., endpoint h') of the first shared winding portion 21b is electrically connected to the first outer conductor 40, and the other end (e.g., endpoint e) is electrically connected to the second outer conductor 41. One end (e.g., endpoint h') of the second shared winding portion 22b is electrically connected to the first outer conductor 40, and the other end (e.g., endpoint A) is electrically connected to the third outer conductor 42.

[0204] In this embodiment, the third rectifier assembly 33 is connected in series on the line of the second outer conductor 41 surrounding the first magnetic post 11; the fourth rectifier assembly 34 is connected in series on the line of the third outer conductor 42 surrounding the first magnetic post 11; the first rectifier assembly 31 is connected in series on the first shared winding portion 21b; the second rectifier assembly 32 is connected in series on the second shared winding portion 22b; the fifth rectifier assembly 35 is connected in series on the line of the second outer conductor 41 surrounding the second magnetic post 12 (e.g., the if segment winding); and the sixth rectifier assembly 36 is connected in series on the line of the third outer conductor 42 surrounding the second magnetic post 12 (e.g., the iB segment winding). The first rectifier assembly 31 and the second rectifier assembly 32 are reused in the rectifier circuit. The positive terminals of the first rectifier assembly 31, the third rectifier assembly 33, and the fifth rectifier assembly 35 are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the second rectifier assembly 32, the fourth rectifier assembly 34, and the sixth rectifier assembly 36 are all electrically connected to the positive output terminal Vo of the power module. The negative terminal of the first rectifier assembly 31 is electrically connected to node h, the negative terminal of the third rectifier assembly 33 is electrically connected to terminal g of the first outer conductor 40, and the negative terminal of the fifth rectifier assembly 35 is electrically connected to terminal i of the first outer conductor 40; the positive terminal of the second rectifier assembly 32 is electrically connected to node h, the positive terminal of the fourth rectifier assembly 34 is electrically connected to terminal g of the first outer conductor 40, and the positive terminal of the sixth rectifier assembly 36 is electrically connected to terminal i of the first outer conductor 40.

[0205] In this embodiment, the first rectifier assembly 31 and the second rectifier assembly 32 are located below the first magnetic pillar 11 and the second magnetic pillar 12, and the third rectifier assembly 33, the fourth rectifier assembly 34, the fifth rectifier assembly 35, and the sixth rectifier assembly 36 are also located below the first magnetic pillar 11 and the second magnetic pillar 12. The first rectifier assembly 31 and the second rectifier assembly 32 can each use the same switching transistor as the third rectifier assembly 33 or the fourth rectifier assembly 34, for example, two switching transistors connected in parallel, or a single switching transistor with a current capability twice that of the third rectifier assembly 33 or the fourth rectifier assembly 34. Each of the third rectifier assembly 33, the fourth rectifier assembly 34, the fifth rectifier assembly 35, and the sixth rectifier assembly 36 has one switching transistor. However, this application is not limited to this.

[0206] Reference Figure 2B , Figure 2B This is a schematic diagram (I) of the rectifier component arrangement of the power module modified based on the second embodiment of the present invention. Figure 2B The power module shown is Figure 2AThe power module rectifier components shown are arranged similarly, with the main difference being that both the first rectifier component 31 and the second rectifier component 32 have only one switching transistor, and the first shared winding section 21b and the second shared winding section 22b do not have a multiplexed shared winding section. The first rectifier component 31 and the second rectifier component 32 are located between the first magnetic post 11 and the second magnetic post 12, while the third rectifier component 33, the fourth rectifier component 34, the fifth rectifier component 35, and the sixth rectifier component 36 are located below the first magnetic post 11 and the second magnetic post 12. The negative terminals of the first rectifier component 31, the third rectifier component 33, and the fifth rectifier component 35 are all electrically connected to the positive output terminal Vo of the power module, and the positive terminals of the first rectifier component 31, the third rectifier component 33, and the fifth rectifier component 35 are all electrically connected to the first outer conductor 40; the positive terminals of the second rectifier component 32, the fourth rectifier component 34, and the sixth rectifier component 36 are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the second rectifier component 32, the fourth rectifier component 34, and the sixth rectifier component 36 are all electrically connected to the first outer conductor 40. In this embodiment, the first rectifier component 31 and the second rectifier component 32 are reused in the rectifier circuit.

[0207] Reference Figure 2C , Figure 2C This is a schematic diagram (II) showing the arrangement of the rectifier components in a power module modified from the second embodiment of the present invention. Figure 2C The power module shown is Figure 2BThe arrangement of the rectifier components in the power module shown is similar, with the main difference being that the first rectifier component 31 is not connected in series on the first shared winding portion 21b located between the first magnetic column 11 and the second magnetic column 12. Instead, the first rectifier component 31 has two rectifier components 31a and 31b. One rectifier component 31a is connected in series on the line of the second outer conductor 41 surrounding the first magnetic column 11, and the other rectifier component 31b is connected in series on the line of the second outer conductor 41 surrounding the second magnetic column 12. In this embodiment, the second outer conductor 41 is electrically connected to the positive output terminal Vo of the power module, and the third outer conductor 42 is electrically connected to the negative output terminal GND of the power module. The first rectifier assembly 31 (31a, 31b), the third rectifier assembly 33, and the fifth rectifier assembly 35 are connected in series on the second outer conductor 41. The negative terminals of the first rectifier assemblies 31 (31a, 31b) are electrically connected to the positive output terminal Vo of the power module, and the positive terminals of the first rectifier assemblies 31 (31a, 31b) are electrically connected to the first shared winding portion 21b. The negative terminals of the third rectifier assembly 33 and the fifth rectifier assembly 35 are electrically connected to the positive output terminal Vo of the power module. The fourth rectifier assembly 34 and the sixth rectifier assembly 36 are connected in series on the third outer conductor 42a, and the positive terminals of the fourth rectifier assembly 34 and the sixth rectifier assembly 36 are electrically connected to the negative output terminal GND of the power module. The second rectifier assembly 32 is located between the first magnetic pillar 11 and the second magnetic pillar 12, and the first rectifier assembly 31, the third rectifier assembly 33, the fourth rectifier assembly 34, the fifth rectifier assembly 35, and the sixth rectifier assembly 36 are located below the first magnetic pillar 11 and the second magnetic pillar 12. In this embodiment, the rectifier circuit only reuses the second rectifier assembly 32.

[0208] Reference Figure 2D , Figure 2D This is a schematic diagram (III) of the rectifier component arrangement of the power module, which is a variation of the second embodiment of the present invention. Figure 2D The power module shown is Figure 2BThe arrangement of the power module rectifier components shown is similar, the main difference being that the second rectifier component 32 is not connected in series on the second shared winding portion 22b located between the first magnetic post 11 and the second magnetic post 12. The second rectifier component 32 has two rectifier components 32a and 32b, one of which is connected in series on the line of the third outer conductor 42 surrounding the first magnetic post 11, and the other rectifier component 32b is connected in series on the line of the third outer conductor 42 surrounding the second magnetic post 12. In this embodiment, the second rectifier assembly 32 (32a, 32b), the fourth rectifier assembly 34, and the sixth rectifier assembly 36 are connected in series on the third outer conductor 42. The negative terminals of the second rectifier assemblies 32 (32a, 32b) are all electrically connected to the second shared winding portion 22b, and the positive terminals of the second rectifier assemblies 32 (32a, 32b) are all electrically connected to the negative output terminal GND of the power module. The positive terminals of the fourth rectifier assembly 34 and the sixth rectifier assembly 36 are all electrically connected to the negative output terminal GND of the power module. The first rectifier assembly 31 is located between the first magnetic pillar 11 and the second magnetic pillar 12. The second rectifier assembly 32, the third rectifier assembly 33, the fourth rectifier assembly 34, the fifth rectifier assembly 35, and the sixth rectifier assembly 36 can be located below the first magnetic pillar 11 and the second magnetic pillar 12. In this embodiment, the rectifier circuit only reuses the first rectifier assembly 31.

[0209] See Figure 2E , Figure 2E This is a schematic diagram (four) showing the arrangement of the rectifier components in a power module modified from the second embodiment of the present invention. Figure 2E The power module shown is similar in arrangement of rectifier components to the power module shown in 2B. The main difference is that, in addition to the first rectifier component 31, the second rectifier component 32, the third rectifier component 33, and the fourth rectifier component 34 electrically connected to form a full-bridge rectifier circuit, the rectifier circuit also includes a fifth rectifier component 35, a sixth rectifier component 36, a seventh rectifier component 37, and an eighth rectifier component 38. Furthermore, the fifth rectifier component 35, the sixth rectifier component 36, the seventh rectifier component 37, and the eighth rectifier component 38 are electrically connected to form another full-bridge rectifier circuit. This power module has two full-bridge rectifier circuits. An outer conductor is provided on the outer side of the first magnetic post 11 and the outer side of the second magnetic post 12. The outer conductor includes a first outer conductor 40, a second outer conductor 41 and a third outer conductor 42. The first outer conductor 40 is formed by sequentially connecting a first winding S1 around the upper surface of the first magnetic post 11 and a second winding S2 around the upper surface of the second magnetic post 12. The second outer conductor 41 and the third outer conductor 42 are each formed by sequentially connecting a first winding S1 around the lower surface of the first magnetic post 11 and a second winding S2 around the lower surface of the second magnetic post 12.

[0210] A shared winding section is provided between the first magnetic post 11 and the second magnetic post 12. That is, the first shared winding section 21b and the second shared winding section 22b between the first magnetic post 11 and the second magnetic post 12 can be combined to form a shared winding section, such as the AB segment winding. One end of the shared winding section (point A in the figure) is electrically connected to the first outer conductor 40, and the other end (point B in the figure) is electrically connected to the second outer conductor 41 and the third outer conductor 42. The first rectifier assembly 31 and the second rectifier assembly 32 are connected in series on the line of the second outer conductor surrounding the first magnetic post 11. The third rectifier assembly 33 and the fourth rectifier assembly 34 are connected in series on the line of the third outer conductor 42 surrounding the first magnetic post 11. The fifth rectifier assembly 35 and the sixth rectifier assembly 36 are connected in series on the line of the second outer conductor 41 surrounding the second magnetic post 12. The seventh rectifier assembly 37 and the eighth rectifier assembly 38 are connected in series on the line of the third outer conductor 42 surrounding the second magnetic post 12. The positive terminals of the third rectifier component 33, the fourth rectifier component 34, the seventh rectifier component 37, and the eighth rectifier component 38 are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the first rectifier component 31, the second rectifier component 32, the fifth rectifier component 35, and the sixth rectifier component 36 are all electrically connected to the positive output terminal Vo of the power module. In this embodiment, the rectifier circuit does not reuse rectifier components.

[0211] See Figures 3A-3C , Figure 3A This is a schematic diagram of the magnetic column arrangement of the power module according to the third embodiment of the present invention. Figure 3B This is a schematic diagram of the power module structure according to the third embodiment of the present invention. Figure 3C This is a circuit schematic diagram of a power supply module according to a third embodiment of the present invention. This power supply module is related to... Figure 2A The power module shown is similar, but the main difference is that this transformer also includes a third magnetic column 13 and a third winding S3 wound around the third magnetic column 13. The first magnetic column 11, the second magnetic column 12, and the third magnetic column 13 are arranged linearly in sequence, and the magnetic flux directions of adjacent magnetic columns are opposite. The third magnetic column 13 is connected between the first cover plate 18 and the second cover plate 19. The multiple windings 2 shown in the figure are respectively arranged between the magnetic columns.

[0212] like Figure 3A and Figure 3BAs shown, the magnetic core also includes a first magnetic side post 16a and a second magnetic side post 16b. The first magnetic side post 16a is located outside the first magnetic post 11, for example, on the left side, and the second magnetic side post 16b is located outside the third magnetic post 13, for example, on the right side. The first magnetic side post 16a and the second magnetic side post 16b are connected between the first cover plate 18 and the second cover plate 19. The magnetic flux in the first magnetic side post 16a and the second magnetic side post 16b is half of the magnetic flux of the first magnetic post 11, the second magnetic post 12, or the third magnetic post 13. The magnetic flux of the first magnetic post 11, the second magnetic post 12, or the third magnetic post 13 is the same, and the magnetic flux directions in adjacent magnetic posts are opposite.

[0213] In this embodiment, outer conductors are provided on the outer sides of the first magnetic post 11, the second magnetic post 12, and the third magnetic post 13. These outer conductors include a first outer conductor 40b, a second outer conductor 41b, and a third outer conductor 42b. The first outer conductor 40b is formed by sequentially connecting a first winding S1 surrounding the upper surface of the first magnetic post, a second winding S2 surrounding the upper surface of the second magnetic post 12, and a third winding S3 surrounding the upper surface of the third magnetic post 13. The second outer conductor 41b and the third outer conductor 42b are each formed by sequentially connecting a first winding S1 surrounding the lower surface of the first magnetic post, a second winding S2 surrounding the lower surface of the second magnetic post 12, and a third winding S3 surrounding the lower surface of the third magnetic post 13. That is, the first outer conductor 40b and the second outer conductor 41b electrically connected together constitute a first annular winding portion 23c, and the first outer conductor 40b and the third outer conductor 42b electrically connected together constitute a second annular winding portion 24c.

[0214] A first inner conductor 43a and a second inner conductor 44a are provided between the first magnetic side post 16a and the first magnetic post 11. A third inner conductor 45a and a fourth inner conductor 46a are provided between the second magnetic side post 16b and the third magnetic post 13. A first shared winding portion 21c1 and a second shared winding portion 22c1 are provided between the first magnetic post and the second magnetic post 12. A third shared winding portion 21c2 and a fourth shared winding portion 22c2 are provided between the second magnetic post 12 and the third magnetic post 13.

[0215] One end of the first inner conductor 43a, the first shared winding portion 21c1, the third shared winding portion 21c2, and the third inner conductor 45a is electrically connected to the first outer conductor 40b. The other end of the first inner conductor 43a, the first shared winding portion 21c1, the third shared winding portion 21c2, and the third inner conductor 45a is electrically connected to the second outer conductor 41b. One end of the second inner conductor 44a, the second shared winding portion 22c1, the fourth shared winding portion 22c2, and the fourth inner conductor 46a is electrically connected to the first outer conductor 40b. The other end of the second inner conductor 44a, the second shared winding portion 22c1, the fourth shared winding portion 22c2, and the fourth inner conductor 46a is electrically connected to the third outer conductor 42b.

[0216] In this embodiment, the rectifier circuit includes a first rectifier component 31, a second rectifier component 32, a third rectifier component 33, a fourth rectifier component 34, a fifth rectifier component 35, a sixth rectifier component 36, a seventh rectifier component 37, and an eighth rectifier component 38. The fifth rectifier component 35 is connected in series with the first inner conductor 43a; the sixth rectifier component 36 is connected in series with the second inner conductor 44a; the first rectifier component 31 is connected in series with the first shared winding portion 22c1; the second rectifier component 32 is connected in series with the second shared winding portion 22c1; the third rectifier component 33 is connected in series with the third shared winding portion 21c2; the fourth rectifier component 34 is connected in series with the fourth shared winding portion 22c2; the seventh rectifier component 37 is connected in series with the third inner conductor 45a; and the eighth rectifier component 38 is connected in series with the fourth inner conductor 46a. The positive terminals of the first rectifier component 31, the third rectifier component 33, the fifth rectifier component 35 and the seventh rectifier component 37 are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the second rectifier component 32, the fourth rectifier component 34, the sixth rectifier component 36 and the eighth rectifier component 38 are all electrically connected to the positive output terminal Vo of the power module.

[0217] In this embodiment, the first rectifier assembly 31, the second rectifier assembly 32, the third rectifier assembly 33, and the fourth rectifier assembly 34 can each be equipped with two switching transistors connected in parallel, and the fifth rectifier assembly 35, the sixth rectifier assembly 36, the seventh rectifier assembly 37, and the eighth rectifier assembly 38 can each be equipped with one switching transistor. In this way, when the same type of switching transistor is used, each switching transistor can bear the same current load. However, this application is not limited to this.

[0218] Figure 3AThe dashed arrow 91 in the diagram illustrates that after setting the first magnetic side post 16a and the second magnetic side post 16b, the magnetic flux can be balanced among the first magnetic post 11 to the third magnetic post 13. In this embodiment, the power module has a three-phase full-bridge rectifier circuit. The output voltage of the three-phase full-bridge rectifier circuit can be the same, which facilitates the parallel output of the three phases. Furthermore, the magnetic flux is shunt between the first magnetic side post 16a and the second magnetic side post 16b on the left and right sides, resulting in a more balanced magnetic flux distribution, which helps to reduce core losses and improve the efficiency of the power module.

[0219] Reference Figures 4A-4C , Figure 4A This is a schematic diagram (I) of the power module structure according to the fourth embodiment of the present invention. Figure 4B This is the circuit schematic diagram of the power module according to the fourth embodiment of the present invention. Figure 4C This is a three-dimensional structural diagram of the power module according to the fourth embodiment of the present invention. Figure 4A As shown, the rectifier circuit of this power module is a full-bridge rectifier circuit. The transformer of this power module includes four magnetic pillars and four windings. The four magnetic pillars are a first magnetic pillar 11, a second magnetic pillar 12, a third magnetic pillar 13, and a fourth magnetic pillar 14. The four windings are a first winding S1 wound around the first magnetic pillar 11, a second winding S2 wound around the second magnetic pillar, a third winding S3 wound around the third magnetic pillar 13, and a fourth winding S4 wound around the fourth magnetic pillar 14. The four magnetic pillars are arranged in an array, that is, the first magnetic pillar 11, the second magnetic pillar 12, the third magnetic pillar 13, and the fourth magnetic pillar 14 are arranged in an array, and the magnetic flux directions of adjacent magnetic pillars are opposite. The first magnetic pillar 11, the second magnetic pillar 12, the third magnetic pillar 13, and the fourth magnetic pillar 14 are connected between the first cover plate 18 and the second cover plate 19.

[0220] A first winding S1 wound around the outside of the first magnetic post 11, a second winding S2 wound around the outside of the second magnetic post 12, a third winding S3 wound around the outside of the third magnetic post 13, and a fourth winding S4 wound around the outside of the fourth magnetic post 14 are sequentially electrically connected to form a first annular winding portion 23d. The windings between adjacent magnetic posts form a first shared winding portion and a second shared winding portion. The first shared winding portion is electrically connected to form a first cross-shaped winding portion 21d, and the second shared winding portion is electrically connected to form a second cross-shaped winding portion 22d. The first cross-shaped winding portion 21d has a node O1 and four endpoints A1, B1, C1, and D1, and the second cross-shaped winding portion 22d has a node O2 and four endpoints A2, B2, C2, and D2.

[0221] Four of the following rectifier components (e.g., rectifier components 31, 33, 36, and 38) are connected in series on the first shared winding section between adjacent magnetic pillars: the first rectifier component 31, the second rectifier component 32, the third rectifier component 33, the fourth rectifier component 34, the fifth rectifier component 35, the sixth rectifier component 36, the seventh rectifier component 37, and the eighth rectifier component 38. The positive terminals of these four rectifier components are all electrically connected to node O1 of the first cross-shaped winding section 21d. The other four rectifier components (e.g., rectifier components 32, 34, 35, and 37) are connected in series on the second shared winding section between adjacent magnetic pillars. The negative terminals of these other four rectifier components are all electrically connected to node O2 of the second cross-shaped winding section 22d.

[0222] In some embodiments, the four endpoints (e.g., endpoints A1, B1, C1, and D1) of the first cross-shaped winding portion 21d and the four endpoints (e.g., endpoints A2, B2, C2, and D2) of the second cross-shaped winding portion 22d are all electrically connected to the first annular winding portion 23d. Node O1 of the first cross-shaped winding portion 21d is electrically connected to the negative output terminal GND of the power module, and node O2 of the second cross-shaped winding portion 22d is electrically connected to the positive output terminal Vo of the power module.

[0223] like Figure 4B As shown, the power module has four full-bridge rectifier circuits connected in parallel and multiplexed with eight rectifier components 31-38. Compared to the traditional four full-bridge rectifier circuits, the number of rectifier components can be reduced by half, and the types of electrodes between the magnetic pillars can also be reduced by half, greatly simplifying the structure. Moreover, it achieves the reuse of the magnetic circuit of the core cover plate (not shown in the figure), the reuse of the windings between the magnetic pillars, and the reuse of the rectifier components, which helps to improve the efficiency of the power module. Furthermore, this symmetrical and balanced structure is more suitable for stacked power module applications.

[0224] like Figure 4C As shown, in this power module, a window is provided in the center of the first cover plate 18 or the second cover plate 19. Lead wires electrically connected to node O1 of the first cross-shaped winding portion 21d and node O2 of the second cross-shaped winding portion 22d are led out from the window. This allows for the effective and convenient outlining of the negative output terminal GND and the positive output terminal Vo of the power module along this window. The structure is compact and the circuit is symmetrical, which is beneficial for improving the power density and efficiency of the power module and for realizing a vertically stacked power module structure.

[0225] See Figure 4D , Figure 4D This is a schematic diagram (II) of the power module structure according to the fourth embodiment of the present invention. This power module is related to... Figure 4AThe power module structure shown is similar, with the main difference being that, in this embodiment, the winding further includes a second annular winding portion 24d, which surrounds the first magnetic post 11, the second magnetic post 12, the third magnetic post 13, and the fourth magnetic post 14. The four endpoints A1, B1, C1, and D1 of the first cross-shaped winding portion 21d are electrically connected to the first annular winding portion 23d, and the four endpoints A2, B2, C2, and D2 of the second cross-shaped winding portion 22d are electrically connected to the second annular winding portion 24d. Node O1 of the first cross-shaped winding portion 21d is electrically connected to node O2 of the second cross-shaped winding portion 22d. The first annular winding portion 23d is electrically connected to the positive output terminal Vo of the power module, and the second annular winding portion 24d is electrically connected to the negative output terminal GND of the power module. This facilitates the extraction of the positive output terminal Vo and the negative output terminal GND of the power module.

[0226] See Figures 5A-5D , Figure 5A This is a schematic diagram of the power module structure according to the fifth embodiment of the present invention. Figure 5B for Figure 5A Another structural diagram of the power supply module. Figure 5C This is a circuit schematic diagram of the power supply module according to the fifth embodiment of the present invention. Figure 5D This is a three-dimensional structural diagram of the power module according to the fifth embodiment of the present invention.

[0227] like Figures 5A-5DAs shown, the power module includes a transformer and a rectifier circuit. The rectifier circuit is a half-bridge full-wave rectifier circuit. The transformer includes a magnetic core and windings, and the rectifier circuit is electrically connected to the windings of the transformer. The magnetic core further includes a first cover plate 18, a second cover plate 19, a first magnetic post 11, and a second magnetic post 12. The second cover plate 19 is disposed opposite to the first cover plate 18, and the magnetic flux direction of the second magnetic post 12 is opposite to that of the first magnetic post 11. The first magnetic post 11 and the second magnetic post 12 are connected between the first cover plate 18 and the second cover plate 19 to form a magnetic circuit. The windings include: a first winding S1 wound on the first magnetic post 11; a third winding S3 wound on the second magnetic post 12; a second winding S2 wound on the first magnetic post 11; and a fourth winding S4 wound on the second magnetic post 12. The first winding S1 and the third winding S3 have a first shared winding portion 21e (e.g., the BD segment winding), and the second winding S2 and the fourth winding S4 have a second shared winding portion 22e (e.g., the AC segment winding). At least a portion of the first shared winding portion 21e is located between the first magnetic post 11 and the second magnetic post 12, and at least a portion of the second shared winding portion 22e is located between the first magnetic post 11 and the second magnetic post 12. The rectifier circuit further includes multiple rectifier components, including a first rectifier component 31 and a second rectifier component 32, which are electrically connected to form a half-bridge full-wave rectifier circuit. By setting a shared winding portion between the magnetic posts, winding reuse is achieved, which reduces the types of electrodes in the windings between the magnetic posts, simplifies the transformer structure and manufacturing process, and improves the power density of the power module.

[0228] In some embodiments, a first winding S1 wound around the outside of the first magnetic post 11 and a third winding S3 wound around the outside of the second magnetic post 12 are electrically connected to form a first annular conductive portion 23e, a second winding S2 wound around the outside of the first magnetic post 11 and a fourth winding S4 wound around the outside of the second magnetic post 12 are electrically connected to form a second annular conductive portion 24e, one end (e.g., endpoint B) of the first shared winding portion 21e is electrically connected to the first annular conductive portion 23e and the other end (e.g., endpoint D) is electrically connected to the second annular conductive portion 24e, and one end (e.g., endpoint C) of the second shared winding portion 22e is electrically connected to the first annular conductive portion 23e and the other end (e.g., endpoint A) is electrically connected to the second annular conductive portion 24e.

[0229] In some embodiments, at least one of the first rectifier component 31 and the second rectifier component 32 is connected in series on the first shared winding portion 21e or the second shared winding portion 22e. By connecting the rectifier components in series on the shared winding portion, the rectifier components are reused, the number of rectifier components can be reduced, the power rating of the power module can be refined, and the selection of switching transistors in the rectifier components can be facilitated.

[0230] like Figures 5A-5B As shown, the first shared winding section 21e and the second shared winding section 22e are located between the first magnetic post 11 and the second magnetic post 12. The first rectifier assembly 31 is connected in series with the first shared winding section 21e, and the second rectifier assembly 32 is connected in series with the second shared winding section 22e. The negative terminal of the second rectifier assembly 32 is electrically connected to the positive output terminal Vo of the power module, and the positive terminal of the first rectifier assembly 31 is electrically connected to the negative output terminal GND of the power module. The direction of the connection between the positive and negative terminals of the first rectifier assembly 31 and the second rectifier assembly 32 may be opposite. Preferably, the negative output terminal GND and the positive output terminal Vo of the power module are located on the same side of the first magnetic post 11 and the second magnetic post 12, for example, both are located on the lower side. The first rectifier assembly 31 is multiplexed by the first winding S1 and the third winding S3, and the second rectifier assembly 32 is multiplexed by the second winding S2 and the fourth winding S4. When using the same rectifier components, a typical two half-bridge full-wave rectifier circuits are connected in parallel via the positive output terminal Vo and the negative output terminal GND, requiring at least four rectifier components to operate. Furthermore, each power level increase requires at least four more rectifier components. In contrast, the power module in this embodiment only requires two rectifier components to achieve parallel operation of the two half-bridge full-wave rectifier circuits. Each power level increase only requires two more rectifier components. This not only reduces the number of rectifier components but also allows for more refined power levels and improves the flexibility of rectifier component selection.

[0231] The following section explains in detail the current and magnetic flux characteristics of this power module during operation. (Refer to...) Figure 5A and Figure 5C , Figure 5C for Figure 5A The circuit diagram of the power module is shown. Figure 5AAs shown, when the magnetic flux in the first magnetic column 11 flows out perpendicular to the paper and the magnetic flux in the second magnetic column 12 enters perpendicular to the paper, the current in the first winding S1 flows counterclockwise and the current in the third winding S3 flows clockwise. The second rectifier component 32 is turned off and the first rectifier component 31 is turned on. The current in the first winding S1 flows through the negative output terminal GND of the power module and through the first rectifier component 31 and the first winding S1 to the positive output terminal Vo of the power module. The current in the third winding S3 flows through the negative output terminal GND of the power module and through the first rectifier component 31 and the third winding S3 to the positive output terminal Vo of the power module.

[0232] like Figure 5B As shown, when the magnetic flux in the first magnetic column 11 enters perpendicularly to the paper and the magnetic flux in the second magnetic column 12 exits perpendicularly to the paper, the current in the second winding S2 flows clockwise and the current in the fourth winding S4 flows counterclockwise. The second rectifier assembly 32 is turned on and the second rectifier assembly 31 is turned off. The current in the second winding S2 flows through the negative output terminal GND of the power module and through the second winding S2 and the second rectifier assembly 32 to the positive output terminal Vo of the power module. The current in the fourth winding S4 flows through the negative output terminal GND of the power module and through the fourth winding S4 and the second rectifier assembly 32 to the positive output terminal Vo of the power module.

[0233] like Figures 5A-5B As shown, the first rectifier assembly 31 and the second rectifier assembly 32 are disposed between the first magnetic post 11 and the second magnetic post 12, but this application is not limited thereto. For example, as Figure 5D As shown, the first rectifier assembly 31 and the second rectifier assembly 32 can also be positioned above the first magnetic pillar 11 and the second magnetic pillar 12. This structure is more conducive to process implementation and also to heat dissipation of the rectifier assemblies. Furthermore, in Figure 5D In the first rectifier component 31 and the second rectifier component 32, each has multiple switching transistors connected in parallel, which can make the connection between the winding and the rectifier component more distributed, which is more conducive to reducing the connection impedance between the winding and the rectifier component and improving the efficiency of the power module.

[0234] See Figures 5E-5G , Figure 5E This is a schematic diagram (I) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention. Figure 5F This is a schematic diagram (II) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention. Figure 5G This is a schematic diagram (III) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention. Figures 5E-5GAs shown, the power module and Figure 5A The power module structure is similar, with the BD segment winding passing between the first magnetic post 11 and the second magnetic post 12 being the first shared winding section 21e, and the AC segment winding passing between the first magnetic post 11 and the second magnetic post 12 being the second shared winding section 22e.

[0235] like Figure 5E As shown, the first rectifier component 31 and the second rectifier component 32 are both connected in series on the second shared winding portion 22e and located between the first magnetic post 11 and the second magnetic post 12. The negative terminals of the first rectifier component 31 and the second rectifier component 32 are both electrically connected to the positive output terminal Vo of the power module, and the first shared winding portion 21e is electrically connected to the negative output terminal GND of the power module.

[0236] like Figure 5F As shown, the first rectifier component 31 and the second rectifier component 32 are both connected in series on the first shared winding portion 21e and located between the first magnetic post 11 and the second magnetic post 12. The positive terminals of the first rectifier component 31 and the second rectifier component 32 are both electrically connected to the negative output terminal GND of the power module, and the second shared winding portion 22e is electrically connected to the positive output terminal Vo of the power module.

[0237] like Figure 5G As shown, the first rectifier assembly 31 and the second rectifier assembly 32 are both connected in series on the first shared winding portion 21e, and both the first rectifier assembly 31 and the second rectifier assembly 32 are located above the first magnetic post 11 and the second magnetic post 12. In other embodiments, the first rectifier assembly 31 and the second rectifier assembly 32 may also be located below the first magnetic post 11 and the second magnetic post 12; or one of the first rectifier assembly 31 and the second rectifier assembly 32 may be located above the first magnetic post 11 and the second magnetic post 12, while the other is located below the first magnetic post 11 and the second magnetic post 12.

[0238] See Figure 5H , Figure 5H This is a schematic diagram (four) showing the arrangement of the rectifier components of the power module according to the fifth embodiment of the present invention. Figure 5H As shown, the power module and Figure 5AThe power module structure is similar, with the main difference being that the plurality of rectifier components include a first rectifier component 31, a second rectifier component 32, and a third rectifier component 33; and rectifier components are only provided on the first shared winding portion 21e. For example, only the first rectifier component 31 is connected in series on the first shared winding portion 21e, while the second rectifier component 32 and the third rectifier component 33 are connected in series on the second annular winding portion 24e. Specifically, the second rectifier component 32 is provided on the second winding S2, and the third rectifier component 33 is provided on the fourth winding S4. In this case, only the first rectifier component 31 is multiplexed by the second winding S1 and the fourth winding S3, while the second rectifier component 32 and the third rectifier component 33 are not multiplexed. In other embodiments, the first rectifier component 31 can also be connected in series on the second shared winding portion 22e, and the second rectifier component 32 and the third rectifier component 33 can be connected in series on the first annular conductive portion 23e. At this time, only the first rectifier component 31 is multiplexed for the first winding S2 and the third winding S4, while the second rectifier component 32 and the third rectifier component 33 are not multiplexed.

[0239] See Figure 5I-5M , Figure 5I This is a schematic diagram (V) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention. Figure 5J This is a schematic diagram (six) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention. Figure 5K This is a schematic diagram (seven) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention. Figure 5L This is a schematic diagram (eighth) showing the arrangement of the rectifier components in a power module modified from the fifth embodiment of the present invention. Figure 5I-5L The circuit diagram of the power module in the middle is roughly as follows: Figure 5M As shown.

[0240] like Figure 5I-5L As shown, the plurality of rectifier components include a first rectifier component 31, a second rectifier component 32, a third rectifier component 33, and a fourth rectifier component 34. The first rectifier component 31 to the fourth rectifier component 34 can be disposed above and / or below the first and second magnetic pillars, and the positions of the rectifier components can be adjusted as needed. For example... Figure 5IAs shown, the first rectifier assembly 31 is connected in series in the circuit where the second annular conductive part 24e surrounds the first magnetic post 11; the second rectifier assembly 32 is connected in series in the circuit where the first annular conductive part 23e surrounds the first magnetic post 11; the third rectifier assembly 33 is connected in series in the circuit where the first annular conductive part 23e surrounds the second magnetic post 12; and the fourth rectifier assembly 34 is connected in series in the circuit where the second annular conductive part 24e surrounds the second magnetic post 12. The positive terminals of the first rectifier assembly 31 and the fourth rectifier assembly 34 are both electrically connected to the second shared winding part 22e, which is electrically connected to the negative output terminal GND of the power module; the negative terminals of the second rectifier assembly 32 and the third rectifier assembly 33 are both electrically connected to the first shared winding part 21e, which is electrically connected to the positive output terminal Vo of the power module.

[0241] Refer to Figure 5I The first rectifier assembly 31, the second rectifier assembly 32, the third rectifier assembly 33, and the fourth rectifier assembly 34 are all disposed on the upper side of the first magnetic post 11 and the second magnetic post 12. In other embodiments, the first rectifier assembly 31, the second rectifier assembly 32, the third rectifier assembly 33, and the fourth rectifier assembly 34 may also be disposed on the lower side of the first magnetic post 11 and the second magnetic post 12.

[0242] like Figure 5J As shown, the first rectifier assembly 31 and the second rectifier assembly 32 are respectively disposed on the upper side and the lower side of the first magnetic post 11 and the second magnetic post 12, and the third rectifier assembly 33 and the fourth rectifier assembly 34 are respectively disposed on the lower side and the upper side of the first magnetic post 11 and the second magnetic post 12.

[0243] like Figure 5K As shown, the first rectifier assembly 31 and the second rectifier assembly 32 are both disposed on one side (e.g., the upper side) of the first magnetic pillar 11 and the second magnetic pillar 12, and the third rectifier assembly 33 and the fourth rectifier assembly 34 are both disposed on the other side (e.g., the lower side) of the first magnetic pillar 11 and the second magnetic pillar 12. In other embodiments, the first rectifier assembly 31 and the second rectifier assembly 32 may also be disposed on the lower side of the first magnetic pillar 11 and the second magnetic pillar 12, and the third rectifier assembly 33 and the fourth rectifier assembly 34 may be disposed on the upper side of the first magnetic pillar 11 and the second magnetic pillar 12.

[0244] like Figure 5LAs shown, the first rectifier assembly 31 and the second rectifier assembly 32 are both disposed on the left side of the first magnetic post 11, and the third rectifier assembly 33 and the fourth rectifier assembly 34 are both disposed on the right side of the second magnetic post 12.

[0245] In summary, the position of the rectifier components can be adjusted as needed, making it widely applicable. For example, the position and arrangement of the rectifier components can be adjusted to meet different types of rectifier components or heat dissipation requirements.

[0246] See Figures 6A-6C , Figure 6A This is a schematic diagram of the magnetic column arrangement of the power module according to the sixth embodiment of the present invention. Figure 6B This is a schematic diagram of the power module structure according to the sixth embodiment of the present invention. Figure 6C This is a schematic diagram of the power module circuit according to the sixth embodiment of the present invention. Figures 6A-6C As shown, the power module and Figure 5A The power module shown has a similar structure. The rectifier circuit of this power module is a half-bridge full-wave rectifier circuit, which includes a first rectifier component 31, a second rectifier component 32, a third rectifier component 33, and a fourth rectifier component 34. The transformer includes a first magnetic post 11 and a first winding S1 and a second winding S2 wound around the first magnetic post 11; a second magnetic post 12 and a third winding S3 and a fourth winding S4 wound around the second magnetic post 12; and a third magnetic post 13 and a fifth winding S5 and a sixth winding S6 wound around the third magnetic post 13. The first winding S1 and the third winding S3 have a first shared winding portion 21f1 (e.g., the ec segment winding), the second winding S2 and the fourth winding S4 have a second shared winding portion 22f1 (e.g., the gA segment winding), the third winding S3 and the fifth winding S5 have a third shared winding portion 21f2 (e.g., the fB segment winding), and the fourth winding S4 and the sixth winding S6 have a fourth shared winding portion 22f2 (e.g., the hd segment winding).

[0247] In this embodiment, the first magnetic post 11, the second magnetic post 12, and the third magnetic post 13 are arranged linearly in sequence, and the magnetic flux directions of adjacent magnetic posts are opposite. The first magnetic post 11, the second magnetic post 12, and the third magnetic post 13 are connected between the first cover plate 18 and the second cover plate 19 to form a closed magnetic circuit. The magnetic core further includes a first magnetic side post 16a and a second magnetic side post 16b. The first magnetic side post 16a is disposed outside the first magnetic post 11 (e.g., on the left side), and the second magnetic side post 16b is disposed outside the third magnetic post 13 (e.g., on the right side). The first magnetic side post 16a and the second magnetic side post 16b are connected between the first cover plate 18 and the second cover plate 19. The magnetic flux in the first magnetic side post 16a and the second magnetic side post 16b can be half of the magnetic flux of the first magnetic post 11, the second magnetic post 12, or the third magnetic post 13. The magnetic flux direction of the first magnetic side post 16a is opposite to the magnetic flux direction of the first magnetic post 11, and the magnetic flux direction of the second magnetic side post 16b is opposite to the magnetic flux direction of the third magnetic post 13. The cross-sectional area of ​​the first magnetic side post 16a and the second magnetic side post 16b can be half of the cross-sectional area of ​​the first magnetic post 11, the second magnetic post 12, or the third magnetic post 13.

[0248] like Figure 6B As shown, outer conductors are provided on the outer sides of the first magnetic post 11, the second magnetic post 12, and the third magnetic post 13. The outer conductors include a first outer conductor 40f, a second outer conductor 41f, a third outer conductor 42f, and a fourth outer conductor 47f. The first outer conductor 40f is formed by sequentially connecting a first winding S1 surrounding the upper surface of the first magnetic post 11, a third winding S3 surrounding the upper surface of the second magnetic post 12, and a fifth winding S5 surrounding the upper surface of the third magnetic post 13. The second outer conductor is formed by sequentially connecting a second winding S2 surrounding the upper surface of the first magnetic post 11 and a fifth winding S5 surrounding the upper surface of the second magnetic post 12. The fourth winding S4 on the upper surface and the sixth winding S6 surrounding the upper surface of the third magnetic post 13 are electrically connected in sequence. The third outer conductor 42f is formed by the second winding S2 surrounding the lower surface of the first magnetic post 11, the fourth winding S4 surrounding the lower surface of the second magnetic post 12, and the fifth winding S5 surrounding the lower surface of the third magnetic post 13 being electrically connected in sequence. The fourth outer conductor 47f is formed by the first winding S1 surrounding the lower surface of the first magnetic post 11, the third winding S3 surrounding the lower surface of the second magnetic post 12, and the sixth winding S6 surrounding the lower surface of the third magnetic post 13 being electrically connected in sequence.

[0249] A first inner conductor 43b and a second inner conductor 44b are provided between the first magnetic side post 16a and the first magnetic post 11. A third inner conductor 45b and a fourth inner conductor 46b are provided between the second magnetic side post 16b and the third magnetic post 13. A first shared winding portion 21f1 and a second shared winding portion 22f1 are provided between the first magnetic post 11 and the second magnetic post 12. A third shared winding portion 21f2 and a fourth shared winding portion 22f2 are provided between the second magnetic post 12 and the third magnetic post 13.

[0250] One end of the first inner conductor 43b is electrically connected to the first outer conductor 40f, and the other end is electrically connected to the fourth outer conductor 47f. One end of the second inner conductor 44b is electrically connected to the second outer conductor 41f, and the other end is electrically connected to the third outer conductor 42f. One end of the third inner conductor 45b is electrically connected to the first outer conductor 40f, and the other end is electrically connected to the third outer conductor 42f. One end of the fourth inner conductor 46b is electrically connected to the second outer conductor 41f, and the other end is electrically connected to the fourth outer conductor 47f. The first shared... One end of the winding section 21f1 is electrically connected to the first outer conductor 40f and the other end is electrically connected to the third outer conductor 42f. One end of the second shared winding section 22f1 is electrically connected to the second outer conductor 41f and the other end is electrically connected to the fourth outer conductor 47f. One end of the third shared winding section 21f2 is electrically connected to the first outer conductor 40f and the other end is electrically connected to the fourth outer conductor 47f. One end of the fourth shared winding section 22f2 is electrically connected to the second outer conductor 41f and the other end is electrically connected to the third outer conductor 42f.

[0251] In this embodiment, the first rectifier component 31 is connected in series with the first inner conductor 43b, the second rectifier component 32 is connected in series with the second shared winding portion 22f1, the third rectifier component 33 is connected in series with the third shared winding portion 21f2, and the fourth rectifier component 34 is connected in series with the fourth inner conductor 46b; the negative terminals of the first rectifier component 31, the second rectifier component 32, the third rectifier component 33, and the fourth rectifier component 34 are electrically connected to the fourth outer conductor 47f, the third outer conductor 42f is electrically connected to the negative output terminal GND of the power module, and the fourth outer conductor 47f is electrically connected to the positive output terminal Vo of the power module.

[0252] See Figures 7A-7C , Figure 7A This is a schematic diagram of the power module structure according to the seventh embodiment of the present invention. Figure 7B This is a three-dimensional structural diagram of the power module according to the seventh embodiment of the present invention. Figure 7C This is a circuit schematic diagram of the power supply module according to the seventh embodiment of the present invention. Figures 7A-7CAs shown, the rectifier circuit of this power module is a half-bridge full-wave rectifier circuit. The transformer includes a magnetic core and windings, and the rectifier circuit is electrically connected to the windings of the transformer. The transformer includes a first magnetic column 11, a second magnetic column 12, and a first winding S1 and a second winding S2 wound around the first magnetic column 11, a third winding S3 and a fourth winding S4 wound around the second magnetic column 12; the transformer also includes a third magnetic column 13, a fourth magnetic column 14, and a fifth winding S5 and a sixth winding S6 wound around the third magnetic column 13, and a seventh winding S7 and an eighth winding S8 wound around the fourth magnetic column 14. The first magnetic column 11, the second magnetic column 12, the third magnetic column 13 and the fourth magnetic column 14 are arranged in an array, and the magnetic flux directions of adjacent magnetic columns around the perimeter are opposite. The first magnetic column 11, the second magnetic column 12, the third magnetic column 13 and the fourth magnetic column 14 are connected between the first cover plate 18 and the second cover plate 19. The upper and lower ends of the four magnetic pillars are connected by the first magnetic cover plate 18 and the second magnetic cover plate 19 to form a multi-coupled magnetic circuit.

[0253] like Figure 7A As shown, the first winding S1 winding around the outside of the first magnetic post 11, the third winding S3 winding around the outside of the second magnetic post 12, the fifth winding S5 winding around the outside of the third magnetic post 13, and the seventh winding S7 winding around the outside of the fourth magnetic post 14 are sequentially electrically connected to form a first annular winding portion 23g. The second winding S2 winding around the outside of the first magnetic post 11, the fourth winding S4 winding around the outside of the second magnetic post 12, the sixth winding S6 winding around the outside of the third magnetic post 13, and the eighth winding S8 winding around the outside of the fourth magnetic post 14 are sequentially electrically connected to form a second annular winding portion 24g. The windings between adjacent magnetic posts form a first shared winding portion and a second shared winding portion. The first shared winding portion is electrically connected to form a first cross-shaped winding portion 21g, and the second shared winding portion is electrically connected to form a second cross-shaped winding portion 22g.

[0254] The first cross-shaped winding section 21g has one node (e.g., node O1) and four endpoints (e.g., endpoints e, B, g, and D). Two alternate endpoints (e.g., endpoints B and D) of the first cross-shaped winding section 21g are electrically connected to the first annular winding section 23g, and the other two endpoints (e.g., endpoints e and g) of the first cross-shaped winding section 21g are electrically connected to the second annular winding section 24g. The second cross-shaped winding section 22g has one node (e.g., node O2) and four endpoints (e.g., endpoints A, f, C, and h). Two alternate endpoints (e.g., endpoints A and C) of the second cross-shaped winding section 22g are electrically connected to the first annular winding section 23g, and the other two endpoints (e.g., endpoints f and h) of the second cross-shaped winding section 22g are electrically connected to the second annular winding section 24g.

[0255] The two endpoints (e.g., endpoints A and C) where the second cross-shaped winding portion 22g is electrically connected to the first annular winding portion 23g are adjacent to the two endpoints (e.g., endpoints e and g) where the first cross-shaped winding portion 21g is electrically connected to the second annular winding portion 24g. Similarly, the two endpoints (e.g., endpoints f and h) where the second cross-shaped winding portion 22g is electrically connected to the second annular winding portion 24g are adjacent to the two endpoints (e.g., endpoints B and D) where the first cross-shaped winding portion 21g is electrically connected to the first annular winding portion 23g. In this embodiment, the first rectifier assembly 31, the second rectifier assembly 32, the third rectifier assembly 33, and the fourth rectifier assembly 34 are respectively connected in series on the shared winding portion between adjacent magnetic posts. For example, the first rectifier assembly 31 is disposed between the first magnetic post 11 and the second magnetic post 12, the second rectifier assembly 32 is disposed between the second magnetic post 12 and the third magnetic post 13, the third rectifier assembly 33 is disposed between the third magnetic post 13 and the fourth magnetic post 14, and the fourth rectifier assembly 34 is disposed between the fourth magnetic post 14 and the first magnetic post 11. The first rectifier assembly 31, the second rectifier assembly 32, the third rectifier assembly 33, and the fourth rectifier assembly 34 are respectively connected in series on the first shared winding section between each adjacent magnetic post. The negative terminals of the first rectifier assembly 31, the second rectifier assembly 32, the third rectifier assembly 33, and the fourth rectifier assembly 34 are all electrically connected to the node (e.g., node O1) of the first cross-shaped winding section 21g. The node (e.g., node O1) of the first cross-shaped winding section 21g is electrically connected to the positive output terminal Vo of the power module, and the node (e.g., node O2) of the second cross-shaped winding section 22g is electrically connected to the negative output terminal GND of the power module. In other embodiments, the first rectifier component 31, the second rectifier component 32, the third rectifier component 33, and the fourth rectifier component 34 may also be connected in series on the second shared winding portion between each adjacent magnetic post, and the positive terminals of the first rectifier component 31, the second rectifier component 32, the third rectifier component 33, and the fourth rectifier component 34 are all electrically connected to the nodes (e.g., node O2) of the second cross-shaped winding portion 22g.

[0256] See Figures 7D-7E , Figure 7D This is a schematic diagram of another structure of the power module according to the seventh embodiment of the present invention. Figure 7E This is a schematic diagram of another three-dimensional structure of the power module according to the seventh embodiment of the present invention. Figures 7D-7EAs shown, the first rectifier component 31 and the third rectifier component 33 are connected in series on the first shared winding section, and the second rectifier component 32 and the fourth rectifier component 34 are connected in series on the second shared winding section. The positive terminals of the first rectifier component 31 and the third rectifier component 33 are electrically connected to the nodes (e.g., node O1) of the first cross-shaped winding section 21g, and the positive terminals of the second rectifier component 32 and the fourth rectifier component 34 are electrically connected to the nodes (e.g., node O2) of the second cross-shaped winding section 22g. The first annular winding section 23g is electrically connected to the negative output terminal GND of the power module, and the second annular winding section 24g is electrically connected to the positive output terminal Vo of the power module. In other embodiments, the negative terminals of the first rectifier assembly 31 and the third rectifier assembly 33 may be electrically connected to the node (e.g., node O1) of the first cross-shaped winding portion 21g, and the negative terminals of the second rectifier assembly 32 and the fourth rectifier assembly 34 may be electrically connected to the node (e.g., node O2) of the second cross-shaped winding portion 22g. In this case, the first annular winding portion 23g may be electrically connected to the positive output terminal Vo of the power module, and the second annular winding portion 24g may be electrically connected to the negative output terminal GND of the power module.

[0257] In this embodiment, a shared winding section is formed in the circuit board 4. The first rectifier assembly 31 and the third rectifier assembly 33 can be disposed on the upper surface of the circuit board 4, and the second rectifier assembly 32 and the fourth rectifier assembly 34 can be disposed on the lower surface of the circuit board 4. Four magnetic pillars pass through the upper and lower surfaces of the circuit board 4, and a first cover plate 18 is disposed on the upper surface of the circuit board 4, and a second cover plate 19 is disposed on the lower surface. The first annular conductive portion 23g and the second annular conductive portion 24g on the outer side of the magnetic core form the negative output terminal GND and the positive output terminal Vo of the power module, respectively, which can be easily led out from the circuit board 4.

[0258] Compared to the traditional four-half-bridge full-wave rectifier circuit, the power module of the seventh embodiment of the present invention reduces the number of rectifier components by half and the number of electrode types between the magnetic pillars by half, greatly simplifying the structure; moreover, it realizes the reuse of magnetic circuits of the core cover plate, the reuse of windings between each magnetic pillar and the reuse of rectifier components, which is beneficial to improving the efficiency of the power module; moreover, this structure is symmetrical and balanced, making it more suitable for stacked power module applications.

[0259] See Figures 8A-8D , Figure 8A This is a circuit schematic of a half-bridge DC-DC converter circuit. Figure 8B This is a circuit schematic of a half-bridge LLC circuit. Figure 8C This is a circuit schematic of a full-bridge LLC circuit. Figure 8DThis is a circuit schematic of an LLC circuit incorporating an autotransformer. Figures 8A-8D As shown, the power module provided by this invention can be applied to these typical application circuits. Here, Vin represents the positive input terminal, Vo represents the positive output terminal, GND represents the negative input terminal and negative output terminal, Q1-Q4 represent the switching transistors in the primary-side bridge circuit, and TR represents the transformer. Furthermore, the power module of this invention can also be applied to Cuk circuits or flyback circuits, etc.

[0260] In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," "left," "right," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or unit 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 the application. The description of terms such as "some embodiments" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0261] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, various modifications and variations can be made to the application examples. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A power module comprising a transformer and a rectifier circuit, the transformer comprising a magnetic core and windings, the rectifier circuit being electrically connected to the windings, characterized in that, The magnetic core further includes: First cover plate; The second cover plate is disposed opposite to the first cover plate; The first magnetic column; and The second magnetic column has a magnetic flux direction opposite to that of the first magnetic column, and the first and second magnetic columns are connected between the first and second cover plates. The winding further includes: A first winding is wound around the first magnetic post; and A second winding is wound around the second magnetic post, wherein the first winding and the second winding have a shared winding portion, at least a portion of which is located between the first magnetic post and the second magnetic post; The rectifier circuit further includes: Multiple rectifier components, including a first rectifier component, a second rectifier component, a third rectifier component, and a fourth rectifier component, wherein the first rectifier component, the second rectifier component, the third rectifier component, and the fourth rectifier component are electrically connected to form a full-bridge rectifier circuit; The shared winding section includes a first shared winding section and a second shared winding section. The first shared winding section and the second shared winding section are both located at least partially between the first magnetic post and the second magnetic post. The first winding wound on the outside of the first magnetic post and the second winding wound on the outside of the second magnetic post are electrically connected to form a first annular winding section. Both ends of the first shared winding section and the second shared winding section are electrically connected to the first annular winding section. The first rectifier and the second rectifier are connected in series on the first shared winding section, and the third rectifier and the fourth rectifier are connected in series on the second shared winding section. The negative terminals of the first rectifier and the second rectifier are electrically connected to the first annular winding section, and the positive terminals of the first rectifier and the second rectifier are both electrically connected to the negative output terminal GND of the power module. The positive terminals of the third rectifier and the fourth rectifier are both electrically connected to the first annular winding section, and the negative terminals of the third rectifier and the fourth rectifier are both electrically connected to the positive output terminal Vo of the power module.

2. The power module as described in claim 1, characterized in that, At least one of the first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly is connected in series on the shared winding section.

3. The power module as described in claim 1, characterized in that, The first shared winding section and the second shared winding section have a multiplexed shared winding section and two branches. One end of the multiplexed shared winding section is electrically connected to the first annular winding section, and the other end passes through the space between the first magnetic post and the second magnetic post and extends to the upper or lower side of the first magnetic post and the second magnetic post. The other end of the multiplexed shared winding section is electrically connected to the first annular winding section through the two branches. The first rectifier component and the second rectifier component are connected in series on one branch, and the third rectifier component and the fourth rectifier component are connected in series on the other branch.

4. The power module as described in claim 3, characterized in that, The first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly are all located above the first magnetic post and the second magnetic post, or all are located below the first magnetic post and the second magnetic post.

5. The power module as described in claim 1, characterized in that, The first rectifier, the second rectifier, the third rectifier, and the fourth rectifier are all disposed between the first magnetic post and the second magnetic post, or the first rectifier, the second rectifier, the third rectifier, and the fourth rectifier are located above or below the first magnetic post and the second magnetic post.

6. The power module as described in claim 1, characterized in that, When the magnetic flux in the first magnetic column flows out perpendicular to the plane of the paper and the magnetic flux in the second magnetic column enters perpendicular to the plane of the paper, the current in the first winding flows counterclockwise and the current in the second winding flows clockwise. The first rectifier assembly and the fourth rectifier assembly are turned on, and the second rectifier assembly and the third rectifier assembly are turned off. The negative output terminal GND of the power module, the first rectifier assembly, the first winding, the fourth rectifier assembly, and the positive output terminal Vo of the power module are sequentially electrically connected around the first magnetic column to form a first current loop. The negative output terminal GND of the power module, the first rectifier assembly, the second winding, the fourth rectifier assembly, and the positive output terminal Vo of the power module are sequentially electrically connected around the second magnetic column to form a second current loop. When the magnetic flux in the first magnetic column enters perpendicularly to the paper and the magnetic flux in the second magnetic column exits perpendicularly to the paper, the current in the first winding flows clockwise and the current in the second winding flows counterclockwise. The second rectifier assembly and the third rectifier assembly are turned on, while the first rectifier assembly and the fourth rectifier assembly are turned off. The negative output terminal GND of the power module, the second rectifier assembly, the first winding, the third rectifier assembly, and the positive output terminal Vo of the power module are sequentially electrically connected around the first magnetic column to form a third current loop. The negative output terminal GND of the power module, the second rectifier assembly, the second winding, the third rectifier assembly, and the positive output terminal Vo of the power module are sequentially electrically connected around the second magnetic column to form a fourth current loop.

7. The power module as described in claim 1, characterized in that, An outer conductor is provided on the outer side of the first magnetic post and the outer side of the second magnetic post. The outer conductor includes a first outer conductor, a second outer conductor and a third outer conductor. The first outer conductor is formed by sequentially connecting a first winding around the upper surface of the first magnetic post and a second winding around the upper surface of the second magnetic post. The second outer conductor and the third outer conductor are each formed by sequentially connecting a first winding around the lower surface of the first magnetic post and a second winding around the lower surface of the second magnetic post. A first shared winding portion and a second shared winding portion are provided between the first magnetic post and the second magnetic post. One end of the first shared winding portion is electrically connected to the first outer conductor and the other end is electrically connected to the second outer conductor. One end of the second shared winding portion is electrically connected to the first outer conductor and the other end is electrically connected to the third outer conductor. The plurality of rectifier components further includes a fifth rectifier component and a sixth rectifier component. The third rectifier component is connected in series in the circuit where the second outer conductor surrounds the first magnetic post. The fourth rectifier component is connected in series in the circuit where the third outer conductor surrounds the first magnetic post. The first rectifier component is connected in series in the first shared winding portion. The second rectifier component is connected in series in the second shared winding portion. The fifth rectifier component is connected in series in the circuit where the second outer conductor surrounds the second magnetic post. The sixth rectifier component is connected in series in the circuit where the third outer conductor surrounds the second magnetic post. The positive terminals of the first, third, and fifth rectifier components are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the second, fourth, and sixth rectifier components are all electrically connected to the positive output terminal Vo of the power module.

8. The power module as described in claim 1, characterized in that, The plurality of rectifier components also include a fifth rectifier component, a sixth rectifier component, a seventh rectifier component, and an eighth rectifier component, which are electrically connected to form another full-bridge rectifier circuit; An outer conductor is provided on the outer side of the first magnetic post and the outer side of the second magnetic post. The outer conductor includes a first outer conductor, a second outer conductor and a third outer conductor. The first outer conductor is formed by sequentially connecting a first winding around the upper surface of the first magnetic post and a second winding around the upper surface of the second magnetic post. The second outer conductor and the third outer conductor are each formed by sequentially connecting a first winding around the lower surface of the first magnetic post and a second winding around the lower surface of the second magnetic post. A shared winding section is provided between the first magnetic post and the second magnetic post. One end of the shared winding section is electrically connected to the first outer conductor, and the other end is electrically connected to the second outer conductor and the third outer conductor. The first rectifier and the second rectifier are connected in series on the line of the second outer conductor surrounding the first magnetic post; the third rectifier and the fourth rectifier are connected in series on the line of the third outer conductor surrounding the first magnetic post; the fifth rectifier and the sixth rectifier are connected in series on the line of the second outer conductor surrounding the second magnetic post; and the seventh rectifier and the eighth rectifier are connected in series on the line of the third outer conductor surrounding the second magnetic post. The positive terminals of the third, fourth, seventh, and eighth rectifier components are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the first, second, fifth, and sixth rectifier components are all electrically connected to the positive output terminal Vo of the power module.

9. The power module as described in claim 1, characterized in that, The rectifier circuit also includes a fifth rectifier component, a sixth rectifier component, a seventh rectifier component, and an eighth rectifier component.

10. The power module as described in claim 9, characterized in that, The transformer also includes a third magnetic column and a third winding wound around the third magnetic column. The first magnetic column, the second magnetic column and the third magnetic column are arranged linearly in sequence, and the magnetic flux directions of adjacent magnetic columns are opposite. The third magnetic column is connected between the first cover plate and the second cover plate. The magnetic core further includes a first magnetic side post and a second magnetic side post. The first magnetic side post is disposed outside the first magnetic post, and the second magnetic side post is disposed outside the third magnetic post. The first magnetic side post and the second magnetic side post are connected between the first cover plate and the second cover plate. The magnetic flux in the first magnetic side post and the second magnetic side post is half of the magnetic flux of the first magnetic post or the second magnetic post.

11. The power module as described in claim 10, characterized in that, An outer conductor is provided on the outer side of the first magnetic post, the outer side of the second magnetic post, and the outer side of the third magnetic post. The outer conductor includes a first outer conductor, a second outer conductor, and a third outer conductor. The first outer conductor is formed by sequentially connecting a first winding around the upper surface of the first magnetic post, a second winding around the upper surface of the second magnetic post, and a third winding around the upper surface of the third magnetic post. The second outer conductor and the third outer conductor are each formed by sequentially connecting a first winding around the lower surface of the first magnetic post, a second winding around the lower surface of the second magnetic post, and a third winding around the lower surface of the third magnetic post. A first inner conductor and a second inner conductor are provided between the first magnetic edge post and the first magnetic post; a third inner conductor and a fourth inner conductor are provided between the second magnetic edge post and the third magnetic post; a first shared winding portion and a second shared winding portion are provided between the first magnetic post and the second magnetic post; and a third shared winding portion and a fourth shared winding portion are provided between the second magnetic post and the third magnetic post. One end of the first inner conductor, the first shared winding portion, the third shared winding portion, and the third inner conductor is electrically connected to the first outer conductor. The other end of the first inner conductor, the first shared winding portion, the third shared winding portion, and the third inner conductor is electrically connected to the second outer conductor. One end of the second inner conductor, the second shared winding portion, the fourth shared winding portion, and the fourth inner conductor is electrically connected to the first outer conductor. The other end of the second inner conductor, the second shared winding portion, the fourth shared winding portion, and the fourth inner conductor is electrically connected to the third outer conductor. The fifth rectifier assembly is connected in series with the first inner conductor; the sixth rectifier assembly is connected in series with the second inner conductor; the first rectifier assembly is connected in series with the first shared winding portion; the second rectifier assembly is connected in series with the second shared winding portion; the third rectifier assembly is connected in series with the third shared winding portion; the fourth rectifier assembly is connected in series with the fourth shared winding portion; the seventh rectifier assembly is connected in series with the third inner conductor; and the eighth rectifier assembly is connected in series with the fourth inner conductor. The positive terminals of the first, third, fifth, and seventh rectifier components are all electrically connected to the negative output terminal GND of the power module, and the negative terminals of the second, fourth, sixth, and eighth rectifier components are all electrically connected to the positive output terminal Vo of the power module.

12. The power module as described in claim 9, characterized in that, The transformer also includes a third magnetic column, a fourth magnetic column, a third winding wound around the third magnetic column, and a fourth winding wound around the fourth magnetic column. The first magnetic column, the second magnetic column, the third magnetic column, and the fourth magnetic column are arranged in an array, and the magnetic flux directions of adjacent magnetic columns around the circumference are opposite. The third magnetic column and the fourth magnetic column are connected between the first cover plate and the second cover plate. A first winding wound around the outer side of the first magnetic post, a second winding wound around the outer side of the second magnetic post, a third winding wound around the outer side of the third magnetic post, and a fourth winding wound around the outer side of the fourth magnetic post are sequentially electrically connected to form a first annular winding section. The windings between adjacent magnetic posts form a first shared winding section and a second shared winding section. The first shared winding section is electrically connected to form a first cross-shaped winding section, and the second shared winding section is electrically connected to form a second cross-shaped winding section. The first cross-shaped winding section has one node and four endpoints, and the second cross-shaped winding section has one node and four endpoints. Four of the following rectifier components—the first, second, third, fourth, fifth, sixth, seventh, and eighth—are connected in series on the first shared winding section between adjacent magnetic pillars. The positive terminals of these four rectifier components are all electrically connected to the nodes of the first cross-shaped winding section. The other four rectifier components are connected in series on the second shared winding section between adjacent magnetic pillars. The negative terminals of these other four rectifier components are all electrically connected to the nodes of the second cross-shaped winding section.

13. The power module as described in claim 12, characterized in that, The four endpoints of the first cross-shaped winding section and the four endpoints of the second cross-shaped winding section are all electrically connected to the first annular winding section; The nodes of the first cross-shaped winding are electrically connected to the negative output terminal GND of the power module, and the nodes of the second cross-shaped winding are electrically connected to the positive output terminal Vo of the power module.

14. The power module as described in claim 13, characterized in that, A window is provided in the center of the first cover plate or the second cover plate, and the lead wires that are electrically connected to the nodes of the first cross-shaped winding portion and the second cross-shaped winding portion are led out from the window.

15. The power module as described in claim 12, characterized in that, The winding also includes a second annular winding portion, which surrounds the first magnetic post, the second magnetic post, the third magnetic post, and the fourth magnetic post; The four endpoints of the first cross-shaped winding section are electrically connected to the first annular winding section, and the four endpoints of the second cross-shaped winding section are electrically connected to the second annular winding section. The nodes of the first cross-shaped winding section are electrically connected to the nodes of the second cross-shaped winding section; The first annular winding is electrically connected to the positive output terminal Vo of the power module, and the second annular winding is electrically connected to the negative output terminal GND of the power module.

16. A power module comprising a transformer and a rectifier circuit, the transformer comprising a magnetic core and windings, the rectifier circuit being electrically connected to the windings, characterized in that, The magnetic core further includes: First cover plate; The second cover plate is disposed opposite to the first cover plate; The first magnetic column; and The second magnetic column has a magnetic flux direction opposite to that of the first magnetic column, and the first and second magnetic columns are connected between the first and second cover plates. The winding further includes: The first winding is wound around the first magnetic post; The third winding is wound around the second magnetic post; A second winding is wound around the first magnetic post; and A fourth winding is wound around the second magnetic post, wherein the first winding and the third winding have a first shared winding portion, the second winding and the fourth winding have a second shared winding portion, at least a portion of the first shared winding portion is located between the first magnetic post and the second magnetic post, and at least a portion of the second shared winding portion is located between the first magnetic post and the second magnetic post. The rectifier circuit further includes: Multiple rectifier components, including a first rectifier component and a second rectifier component, are electrically connected to form a half-bridge full-wave rectifier circuit. A first winding wound on the outside of the first magnetic post and a third winding wound on the outside of the second magnetic post are electrically connected to form a first annular winding portion. A second winding wound on the outside of the first magnetic post and a fourth winding wound on the outside of the second magnetic post are electrically connected to form a second annular winding portion. One end of the first shared winding portion is electrically connected to the first annular winding portion and the other end is electrically connected to the second annular winding portion. One end of the second shared winding portion is electrically connected to the first annular winding portion and the other end is electrically connected to the second annular winding portion.

17. The power module as described in claim 16, characterized in that, At least one of the first rectifier component and the second rectifier component is connected in series on the first shared winding portion or the second shared winding portion.

18. The power module as described in claim 16, characterized in that, The first rectifier component is connected in series on the first shared winding section, and the second rectifier component is connected in series on the second shared winding section. The negative terminal of the second rectifier component is electrically connected to the positive output terminal Vo of the power module, and the positive terminal of the first rectifier component is electrically connected to the negative output terminal GND of the power module.

19. The power module as described in claim 16, characterized in that, The first rectifier and the second rectifier are both connected in series on the second shared winding section, and the negative terminals of the first rectifier and the second rectifier are both electrically connected to the positive output terminal Vo of the power module, and the first shared winding section is electrically connected to the negative output terminal GND of the power module.

20. The power module as described in claim 16, characterized in that, The first rectifier and the second rectifier are both connected in series on the first shared winding section, and the positive terminals of the first rectifier and the second rectifier are both electrically connected to the negative output terminal GND of the power module, and the second shared winding section is electrically connected to the positive output terminal Vo of the power module.

21. The power module as described in claim 16, characterized in that, The first rectifier component and the second rectifier component are both located between the first magnetic column and the second magnetic column; Alternatively, both the first rectifier assembly and the second rectifier assembly may be located above or below the first and second magnetic pillars.

22. The power module as described in claim 16, characterized in that, The plurality of rectifier components also includes a third rectifier component; The first rectifier assembly is connected in series on the first shared winding section, and the second rectifier assembly and the third rectifier assembly are connected in series on the second annular winding section; Alternatively, the first rectifier assembly is connected in series on the second shared winding section, and the second rectifier assembly and the third rectifier assembly are connected in series on the first annular winding section.

23. The power module as described in claim 16, characterized in that, The plurality of rectifier components further includes a third rectifier component and a fourth rectifier component; The first rectifier assembly is connected in series on the line of the second annular winding portion surrounding the first magnetic post; the second rectifier assembly is connected in series on the line of the first annular winding portion surrounding the first magnetic post; the third rectifier assembly is connected in series on the line of the first annular winding portion surrounding the second magnetic post; and the fourth rectifier assembly is connected in series on the line of the second annular winding portion surrounding the second magnetic post. The positive terminals of the first rectifier component and the fourth rectifier component are both electrically connected to the second shared winding section, the second shared winding section is electrically connected to the negative output terminal GND of the power module, the negative terminals of the second rectifier component and the third rectifier component are both electrically connected to the first shared winding section, and the first shared winding section is electrically connected to the positive output terminal Vo of the power module.

24. The power module as described in claim 23, characterized in that, The first rectifier component, the second rectifier component, the third rectifier component, and the fourth rectifier component are all disposed on the upper or lower side of the first magnetic post and the second magnetic post; Alternatively, the first rectifier assembly and the second rectifier assembly are respectively disposed on the upper and lower sides of the first magnetic post and the second magnetic post, and the third rectifier assembly and the fourth rectifier assembly are respectively disposed on the upper and lower sides of the first magnetic post and the second magnetic post. Alternatively, the first rectifier and the second rectifier are both disposed on one side of the upper and lower sides of the first and second magnetic pillars, and the third rectifier and the fourth rectifier are both disposed on the other side of the upper and lower sides of the first and second magnetic pillars. Alternatively, the first rectifier component and the second rectifier component are both disposed to the left of the first magnetic post, and the third rectifier component and the fourth rectifier component are both disposed to the right of the second magnetic post.

25. The power module as described in claim 16, characterized in that, The rectifier circuit also includes a third rectifier component and a fourth rectifier component.

26. The power module as described in claim 25, characterized in that, The transformer also includes a third magnetic column and a fifth and a sixth winding wound around the third magnetic column. The third and fifth windings have a third shared winding portion, and the fourth and sixth windings have a fourth shared winding portion. The first, second, and third magnetic columns are arranged linearly in sequence, and the magnetic flux directions of adjacent magnetic columns are opposite. The third magnetic column is connected between the first cover plate and the second cover plate. The magnetic core also includes a first magnetic side post and a second magnetic side post. The first magnetic side post is disposed outside the first magnetic post, and the second magnetic side post is disposed outside the third magnetic post. The first magnetic side post and the second magnetic side post are connected between the first cover plate and the second cover plate. The magnetic flux in the first magnetic side post and the second magnetic side post is half of the magnetic flux of the first magnetic post or the second magnetic post. An outer conductor is provided on the outer side of the first magnetic post, the outer side of the second magnetic post, and the outer side of the third magnetic post. The outer conductor includes a first outer conductor, a second outer conductor, a third outer conductor, and a fourth outer conductor. The first outer conductor is formed by sequentially connecting a first winding around the upper surface of the first magnetic post, a third winding around the upper surface of the second magnetic post, and a fifth winding around the upper surface of the third magnetic post. The second outer conductor is formed by sequentially connecting a second winding around the upper surface of the first magnetic post, a fourth winding around the upper surface of the second magnetic post, and a sixth winding around the upper surface of the third magnetic post. The third outer conductor is formed by sequentially connecting a second winding around the lower surface of the first magnetic post, a fourth winding around the lower surface of the second magnetic post, and a fifth winding around the lower surface of the third magnetic post. The fourth outer conductor is formed by sequentially connecting a first winding around the lower surface of the first magnetic post, a third winding around the lower surface of the second magnetic post, and a sixth winding around the lower surface of the third magnetic post. A first inner conductor and a second inner conductor are provided between the first magnetic edge post and the first magnetic post; a third inner conductor and a fourth inner conductor are provided between the second magnetic edge post and the third magnetic post; a first shared winding portion and a second shared winding portion are provided between the first magnetic post and the second magnetic post; and a third shared winding portion and a fourth shared winding portion are provided between the second magnetic post and the third magnetic post. One end of the first inner conductor is electrically connected to the first outer conductor, and the other end is electrically connected to the fourth outer conductor. One end of the second inner conductor is electrically connected to the second outer conductor, and the other end is electrically connected to the third outer conductor. One end of the third inner conductor is electrically connected to the first outer conductor, and the other end is electrically connected to the third outer conductor. One end of the fourth inner conductor is electrically connected to the second outer conductor, and the other end is electrically connected to the fourth outer conductor. One end of the first shared winding portion is electrically connected to the first outer conductor, and the other end is electrically connected to the third outer conductor. One end of the second shared winding portion is electrically connected to the second outer conductor, and the other end is electrically connected to the fourth outer conductor. One end of the third shared winding portion is electrically connected to the first outer conductor, and the other end is electrically connected to the fourth outer conductor. One end of the fourth shared winding portion is electrically connected to the second outer conductor, and the other end is electrically connected to the third outer conductor.

27. The power module as described in claim 26, characterized in that, The first rectifier assembly is connected in series with the first inner conductor, the second rectifier assembly is connected in series with the second shared winding, the third rectifier assembly is connected in series with the third shared winding, and the fourth rectifier assembly is connected in series with the fourth inner conductor. The negative terminals of the first rectifier component, the second rectifier component, the third rectifier component, and the fourth rectifier component are electrically connected to the fourth outer conductor. The third outer conductor is electrically connected to the negative output terminal GND of the power module, and the fourth outer conductor is electrically connected to the positive output terminal Vo of the power module.

28. The power module as described in claim 25, characterized in that, The transformer also includes a third magnetic column, a fourth magnetic column, a fifth and a sixth winding wound around the third magnetic column, and a seventh and an eighth winding wound around the fourth magnetic column. The first, second, third, and fourth magnetic columns are arranged in an array, and the magnetic flux directions of adjacent magnetic columns around the circumference are opposite. The third and fourth magnetic columns are connected between the first and second cover plates. A first winding wound around the outer side of the first magnetic post, a third winding wound around the outer side of the second magnetic post, a fifth winding wound around the outer side of the third magnetic post, and a seventh winding wound around the outer side of the fourth magnetic post are sequentially electrically connected to form a first annular winding portion. A second winding wound around the outer side of the first magnetic post, a fourth winding wound around the outer side of the second magnetic post, a sixth winding wound around the outer side of the third magnetic post, and an eighth winding wound around the outer side of the fourth magnetic post are sequentially electrically connected to form a second annular winding portion. The windings between adjacent magnetic posts form a first shared winding portion and a second shared winding portion. The first shared winding portion is electrically connected to form a first cross-shaped winding portion, and the second shared winding portion is electrically connected to form a second cross-shaped winding portion. The first cross-shaped winding section has one node and four endpoints. Two of the spaced-apart endpoints of the first cross-shaped winding section are electrically connected to the first annular winding section, and the other two endpoints of the first cross-shaped winding section are electrically connected to the second annular winding section. The second cross-shaped winding section has one node and four endpoints. Two of the spaced-apart endpoints of the second cross-shaped winding section are electrically connected to the first annular winding section, and the other two endpoints of the second cross-shaped winding section are electrically connected to the second annular winding section. The two endpoints of the second cross-shaped winding that are electrically connected to the first annular winding are adjacent to the two endpoints of the first cross-shaped winding that are electrically connected to the second annular winding. The two endpoints of the second cross-shaped winding that are electrically connected to the second annular winding are adjacent to the two endpoints of the first cross-shaped winding that are electrically connected to the first annular winding.

29. The power module as described in claim 28, characterized in that, The first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly are respectively connected in series on the first shared winding section between each adjacent magnetic column. The negative terminals of the first rectifier assembly, the second rectifier assembly, the third rectifier assembly, and the fourth rectifier assembly are all electrically connected to the nodes of the first cross-shaped winding section. The nodes of the first cross-shaped winding section are electrically connected to the positive output terminal Vo of the power module, and the nodes of the second cross-shaped winding section are electrically connected to the negative output terminal GND of the power module.

30. The power module as described in claim 28, characterized in that, The first rectifier component and the third rectifier component are connected in series on the first shared winding section, and the second rectifier component and the fourth rectifier component are connected in series on the second shared winding section. The positive terminals of the first rectifier component and the third rectifier component are electrically connected to the nodes of the first cross-shaped winding section, and the positive terminals of the second rectifier component and the fourth rectifier component are electrically connected to the nodes of the second cross-shaped winding section. The first annular winding section is electrically connected to the negative output terminal GND of the power module, and the second annular winding section is electrically connected to the positive output terminal Vo of the power module.

31. The power module as described in claim 18, characterized in that, When the magnetic flux in the first magnetic column flows out perpendicular to the plane of the paper and the magnetic flux in the second magnetic column enters perpendicular to the plane of the paper, the current in the first winding flows counterclockwise and the current in the third winding flows clockwise. The second rectifier is turned off and the first rectifier is turned on. The current in the first winding flows through the negative output terminal GND of the power module and through the first rectifier and the first winding to the positive output terminal Vo of the power module. The current in the third winding flows through the negative output terminal GND of the power module and through the first rectifier and the third winding to the positive output terminal Vo of the power module. When the magnetic flux in the first magnetic column enters perpendicularly to the paper and the magnetic flux in the second magnetic column exits perpendicularly to the paper, the current in the second winding flows clockwise and the current in the fourth winding flows counterclockwise. The first rectifier component is turned off and the second rectifier component is turned on. The current in the second winding flows through the negative output terminal GND of the power module and through the second winding and the second rectifier component to the positive output terminal Vo of the power module. The current in the fourth winding flows through the negative output terminal GND of the power module and through the fourth winding and the second rectifier component to the positive output terminal Vo of the power module.

32. The power module as described in any one of claims 1-31, characterized in that, Each of the rectifier components includes one or more switching transistors connected in parallel; The winding is a flat winding, and the winding is used as the secondary winding of the transformer.

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