Transformer and transformation equipment

Abstract

The invention provides a transformer and transformation equipment. A primary winding of the transformer sleeves a magnetic core; the magnetic core is sleeved with the first secondary winding, and in the first direction, the first secondary winding is arranged close to the primary winding; the first secondary winding comprises a first output structure and a second output structure which are arranged in a spaced mode in the second direction, and the second direction is perpendicular to the first direction; the first output structure is in plug-in fit with the first daughter board, and the second output structure is electrically connected with the second daughter board; the first output structure comprises a first plate and a second plate which are connected and perpendicular to each other, the second plate is provided with a first inserting part extending in the third direction, and the first inserting part is matched with the first daughter board in an inserting mode; the first output structure of the first secondary winding comprises the first plate and the second plate which are perpendicular to each other, so that the space occupation of the first output structure in the second direction is reduced under the condition of ensuring the current output requirement of the first output structure.

Description

Technical Field

[0001] This application belongs to the field of transformer technology, and in particular relates to a transformer and transformer equipment. Background Technology

[0002] A transformer is an electrical device that can transmit electrical energy and transform voltage. Based on the principle of electromagnetic induction, it increases or decreases voltage by the difference in the number of turns between the primary and secondary windings. It can be used in many fields such as power systems, electronic equipment, and communication devices.

[0003] In related technologies, the secondary winding output structure of some transformers is relatively dispersed. In order to meet performance requirements such as current output, it needs to occupy a large area of ​​the circuit board when connected to the circuit board. This not only causes a large amount of the already limited installation space on the circuit board to be occupied, but may also affect the layout planning of other electronic components, thereby restricting the development of the entire electronic device towards miniaturization and high integration. Summary of the Invention

[0004] The purpose of this application is to provide a transformer and a transformer equipment, which aims to solve the problem of large space occupation of transformers in traditional technology.

[0005] A first aspect of this application provides a transformer for mounting on a circuit board, the circuit board including a first sub-board and a second sub-board perpendicular to each other, the transformer including a magnetic core, the length direction of the magnetic core being a first direction; the transformer further includes a transformer assembly, the transformer assembly including: The primary winding is sleeved on the magnetic core; The first stage winding is sleeved on the magnetic core, and in a first direction, the first stage winding is close to the primary winding; the first stage winding includes a first output structure and a second output structure spaced apart along a second direction, the second direction being perpendicular to the first direction; the first output structure is plugged into and adapted to the first sub-board, and the second output structure is electrically connected to the second sub-board; The first output structure includes a first plate and a second plate that are connected to each other and perpendicular to each other. The first plate is perpendicular to the first direction, and the second plate is perpendicular to the second direction. The second plate has a first plug-in portion that extends along a third direction and is plugged into and adapted to the first sub-board.

[0006] In some embodiments of this application, the transformer assembly further includes a second-stage winding connected in parallel with the first-stage winding. The second-stage winding is sleeved on the magnetic core, and in the first direction, the second-stage winding is disposed close to the primary winding. The second-stage winding includes a third output structure and a fourth output structure spaced apart along a second direction. The fourth output structure is plugged into and adapted to the first sub-board, and the third output structure is electrically connected to the second sub-board. The third output structure is connected to the second output structure, and the fourth output structure is disposed on the side of the second output structure opposite to the first output structure. The first output structure includes a third second connecting plate and a fourth second connecting plate that are interconnected and perpendicular to each other. The third second connecting plate is perpendicular to the first direction, and the fourth second connecting plate is perpendicular to the second direction. The fourth second connecting plate has a second plug-in portion that extends along the third direction and is plugged into and adapted to the first sub-board.

[0007] In some embodiments of this application, the primary winding, the secondary winding, and the first-stage winding are arranged sequentially along the first direction; Along the first direction, the third output structure and the second output structure are stacked sequentially.

[0008] In some embodiments of this application, the transformer assembly further includes a first fixing plate and a second fixing plate sleeved on the magnetic core, and the primary winding, the secondary winding and the first primary winding are sandwiched between the first fixing plate and the second fixing plate.

[0009] In some embodiments of this application, an insulating film layer is provided between at least any two adjacent components of the first fixing plate, the primary winding, the secondary winding, the first primary winding, and the second fixing plate.

[0010] In some embodiments of this application, the number of transformer components is at least two, and the at least two transformer components are arranged along the first direction; the primary coils of the at least two transformer components are connected in series.

[0011] In some embodiments of this application, the transformer has an adjacent first side and a second side, the first side being used for mounting with the first sub-board and the second side being used for mounting with the second sub-board; the primary coils of the at least two transformer assemblies are connected in series to form a series structure, and the series structure extends to the second side and is connected to the second sub-board.

[0012] In some embodiments of this application, a fixing plate is reused between two adjacent transformer components; At least two transformer assemblies include a first transformer assembly, a second transformer assembly, and a third transformer assembly disposed along the first direction; Along the first direction, the first fixing plate, primary winding, secondary winding, primary winding, and second fixing plate of the first transformer assembly, the primary winding, secondary winding, primary winding, and second fixing plate of the second transformer assembly, and the primary winding, secondary winding, primary winding, and second fixing plate of the third transformer assembly are arranged sequentially.

[0013] In some embodiments of this application, the transformer further includes a first connecting plate, and the two fixing plates that are furthest apart among the plurality of transformer components are connected through the first connecting plate.

[0014] In some embodiments of this application, the primary windings of two adjacent transformer components are spaced apart along the first direction; And / or, the second stage windings in two adjacent transformer assemblies are spaced apart along the first direction.

[0015] In some embodiments of this application, the transformer includes a second connecting plate for electrical connection with the second sub-board. The second connecting plate is provided with connecting holes, and a second output structure and a third output structure are inserted into the connecting holes and electrically connected to the second connecting plate.

[0016] In some embodiments of this application, the transformer includes a magnet, and a cavity is formed within the magnet for accommodating the transformer assembly and the magnetic core, the magnetic core being connected to the magnet; And / or, the magnetic core is a cylindrical structure or a prismatic structure.

[0017] In some embodiments of this application, the transformer further includes a fourth fixing plate, which is disposed on the second side of the transformer and fixed to the magnet; The fourth fixing plate is provided with at least two fixing holes, and the second connecting plate and the series structure are fixed in the fixing holes.

[0018] In some embodiments of this application, the transformer further includes tape wrapped around the fourth fixing plate and the magnet to fix the fourth fixing plate and the magnet.

[0019] In some embodiments of this application, the primary winding is a coil, and the first and second primary windings are copper sheets.

[0020] A second aspect of this application also provides a transformer device, including the transformer as described above.

[0021] In some embodiments of this application, the transformer device further includes a circuit board, which includes a first sub-board and a second sub-board. Functional devices are disposed on the first sub-board, and the functional devices are offset from the first output structure and the second output structure. The functional device is a switching device and / or a heat sink.

[0022] The beneficial effects of this application are as follows: The transformer and transformer equipment of this application are mounted on a circuit board, the circuit board including a first sub-board and a second sub-board perpendicular to each other, the transformer including a magnetic core and a transformer assembly, the length direction of the magnetic core being a first direction; the transformer assembly including a primary winding and a first secondary winding; the primary winding is sleeved on the magnetic core; the first secondary winding is sleeved on the magnetic core, and in the first direction, the first secondary winding is positioned close to the primary winding; the first secondary winding includes a first output structure and a second output structure spaced apart along a second direction, the second direction being perpendicular to the first direction; the first output structure is inserted into the first sub-board. The first output structure is adapted and electrically connected to the second sub-board; wherein, the first output structure includes a first plate and a second plate that are connected to each other and perpendicular to each other, the first plate is perpendicular to a first direction, the second plate is perpendicular to a second direction, and the second plate has a first plug-in portion extending along a third direction, the first plug-in portion being plugged into and adapted to the first sub-board; the first output structure of the first primary winding in this application includes a first plate and a second plate that are perpendicular to each other, which is beneficial to reduce the space occupied by the first output structure in the second direction while ensuring the current output requirements of the first output structure, and is beneficial to save the installation space on the first sub-board. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a transformer provided in one embodiment of this application; Figure 2 A schematic diagram of the structure of a transformer provided in another embodiment of this application; Figure 3 Provided for an embodiment of this application Figure 2 A magnified schematic diagram of a portion of structure A; Figure 4 Provided for an embodiment of this application Figure 2 Schematic diagram of the enlarged local B structure Figure 5 A schematic diagram of the circuit structure of a transformer provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a transformer provided in yet another embodiment of this application; Figure 7 This is a schematic diagram of the structure of a transformer provided in another embodiment of this application; Figure 8 This is a schematic diagram of the structure of a transformer provided in yet another embodiment of this application.

[0024] Specific element symbol explanations: 10-Circuit board, 11-First sub-board, 12-Second sub-board, 100-Magnetic core, 200-Transformer assembly, 210-Primary winding, 211-Output pin, 220-First primary winding, 221-First output structure, 2211-First board, 2212-Second board, 22121-First connector, 222-Second output structure, 230-Second secondary winding, 231-Third output structure, 232-Fourth output structure, 2321-Third second connecting plate, 2322-Fourth second connecting plate, 240-First fixing plate, 250-Second fixing plate, 260-Insulating film layer, 300-Magnet, 400-Fourth fixing plate, 500-First connecting plate, 600-Second connecting plate, 610-Connecting hole, 700-Tape, a-First direction, b-Second direction, c-Third direction. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0026] It should be noted that when a component is referred to as being "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] It's important to understand that a transformer is an electrical device that transmits electrical energy and transforms voltage. Utilizing the principle of electromagnetic induction, it raises or lowers voltage through the difference in the number of turns between the primary and secondary windings. Transformers are used in numerous fields, including power systems, electronic equipment, and communication devices. In various electronic devices, transformers play a crucial role in providing suitable voltages for different circuit modules. Their performance, such as energy transfer efficiency and size, directly affects the overall stability and integration of the equipment.

[0029] In related technologies, the secondary winding output structure of some transformers is relatively dispersed. To meet performance requirements such as current output, they require a large area of ​​circuit board space when connected to the circuit board. This not only significantly occupies the already limited mounting space on the circuit board but may also affect the layout planning of other electronic components, thus hindering the development of the entire electronic device towards miniaturization and high integration. For a long time, how to effectively reduce the space occupied by the transformer on the circuit board while ensuring that the transformer's performance, especially key performance such as current output, is not affected, has been a technical problem that urgently needs to be solved by those skilled in the art.

[0030] Based on this, this application improves the transformer and transformer equipment in the related technology.

[0031] Please see Figures 1 to 3 , Figure 1 A schematic diagram of the transformer structure provided in an embodiment of this application is shown. Figure 2 A schematic diagram of the transformer structure provided in an embodiment of this application is shown. Figure 3 The embodiments provided in this application are shown. Figure 2 A partial enlarged schematic diagram of structure A. The transformer in this embodiment is mounted on a circuit board 10. The circuit board 10 includes a first sub-board 11 and a second sub-board 12 that are perpendicular to each other. The transformer includes a magnetic core 100 and a transformer assembly 200. The length direction of the magnetic core 100 is a first direction a. The transformer assembly 200 includes a primary winding 210 and a first secondary winding 220. The primary winding 210 is sleeved on the magnetic core 100. The first secondary winding 220 is sleeved on the magnetic core 100 and is positioned close to the primary winding 210 along the first direction a. The first secondary winding 220 includes first... Output structure 221 and second output structure 222, the second direction b is perpendicular to the first direction a; the first output structure 221 is plugged into and adapted to the first sub-board 11, and the second output structure 222 is electrically connected to the second sub-board 12; wherein, the first output structure 221 includes a first plate 2211 and a second plate 2212 that are connected to each other and perpendicular to each other, the first plate 2211 is perpendicular to the first direction a, the second plate 2212 is perpendicular to the second direction b, and the second plate 2212 has a first plug-in portion 22121 that extends along a third direction c, and the first plug-in portion 22121 is plugged into and adapted to the first sub-board 11.

[0032] It should be explained that a transformer is a core component in power electronic equipment used to change AC voltage. It achieves energy transfer between the primary and secondary sides through the principle of electromagnetic induction and is widely used in switching power supplies, new energy equipment, and other scenarios. Its structure typically includes a magnetic core 100 and windings, and the winding turns ratio can be adjusted to adapt to different voltage conversion requirements. Circuit board 10 is a substrate used to support and fix electronic components and to achieve electrical connections between components. The first sub-board 11 and the second sub-board 12 are two functional sub-modules arranged perpendicularly to each other in circuit board 10. Their vertical layout expands the component mounting area within a limited planar space, each supporting electronic components with different functions. Electrical connections between them are achieved through wires or plug-in structures.

[0033] The magnetic core 100 is a magnetic component in the transformer used to enhance electromagnetic coupling. It is usually made of magnetically conductive materials such as ferrite and provides a path for magnetic flux transmission. Its length direction (first direction a) determines the extension direction of the transformer body. By mounting the windings on the magnetic core 100, leakage flux can be reduced and energy conversion efficiency can be improved. The transformer assembly 200 is the core functional part of the transformer that realizes voltage conversion. It includes a primary winding 210 and a secondary winding. The primary winding 210 is connected to the input voltage, and the secondary winding outputs the converted voltage. The output voltage value can be precisely controlled by adjusting the turns ratio of the two windings.

[0034] The primary winding 210 is the winding in the transformer assembly 200 that receives the input power. It is mounted on the magnetic core 100 and generates an alternating magnetic field when energized. Energy is transferred to the secondary winding via electromagnetic induction. The number of turns and wire specifications must be designed according to the input voltage and power requirements. The first primary winding 220 is the winding in the transformer assembly 200 used to output the converted voltage. It is mounted on the magnetic core 100 and positioned close to the primary winding 210. It can receive the energy transferred from the primary winding 210 via electromagnetic induction. The first output structure 221 and the second output structure 222 are components in the first primary winding 220 used for electrical connection and mechanical fixation with the circuit board 10 sub-board. They are spaced apart along the second direction b (perpendicular to the length direction of the magnetic core 100). The first plate 2211 and the second plate 2212 are two mutually perpendicular connecting components in the first output structure 221. The first plate 2211 is perpendicular to the length direction (first direction a) of the magnetic core 100 and mainly serves to conduct current and provide structural support. The second plate 2212 is perpendicular to the second direction b and is used to extend the connection path and set the plug-in structure. The first plug-in part 22121 is a protrusion extending along the third direction c on the second plate 2212. It has the size and shape to match the slot or pad of the first daughter board 11. The first output structure 221 and the first daughter board 11 are mechanically fixed and electrically connected through plug-in mating.

[0035] Understandably, in resonant topologies such as LLC, the transformer needs to work in conjunction with components such as synchronous rectifier MOSFETs. Traditional secondary winding output structures are mostly single-planar extensions, which tend to occupy a large amount of space laterally, resulting in limited installation of other components (such as rectifier devices). However, in this application, the first board 2211 and the second board 2212 are vertically distributed, turning the current transmission path from the second direction b to the third direction c (such as the direction perpendicular to the plane of the sub-board), and the first plug-in portion 22121 extends along the third direction c to adapt to the first sub-board 11, without needing to reserve too much extension space in the second direction b of the first sub-board 11; at the same time, the first secondary winding 220 is set close to the primary winding 210 in the first direction a, shortening the distance between the two in the length direction of the magnetic core 100, further compressing the space occupied by the transformer in the first direction a, which is beneficial to improving the overall power density of the circuit board 10.

[0036] Please refer to the embodiments described in this application. Figure 2 And see Figure 4 and Figure 5 , Figure 4 The embodiments provided in this application are shown. Figure 2 A magnified schematic diagram of the local B structure. Figure 5 A schematic diagram of the circuit structure of the transformer provided in an embodiment of this application is shown. Figure 5 As shown, a primary winding 210 is formed between points A and C on the left, a first primary winding 220 is formed between points D and E on the right, and a second primary winding 230 is formed between points E and F. The transformer assembly 200 in this embodiment also includes a second primary winding 230 connected in parallel with the first primary winding 220. The second primary winding 230 is sleeved on the magnetic core 100 and is positioned close to the primary winding 210 in the first direction a. The second primary winding 230 includes a third output structure 231 and a fourth output structure 232 spaced apart along the second direction b. The fourth output structure 232 is plugged into and adapted to the first daughterboard 11, and the third output structure 231 is electrically connected to the second daughterboard 12. The third output structure 231 and... The second output structure 222 is connected, and the fourth output structure 232 is disposed on the side of the second output structure 222 away from the first output structure 221; wherein, the first output structure 221 includes a third second connecting plate 2321 and a fourth second connecting plate 2322 that are connected to each other and perpendicular to each other. The third second connecting plate 2321 is perpendicular to the first direction a, and the fourth second connecting plate 2322 is perpendicular to the second direction b. The fourth second connecting plate 2322 has a second plug-in portion that extends along the third direction c, and the second plug-in portion is plugged into and adapted to the first sub-board 11.

[0037] It should be explained that the second-stage winding 230 is the secondary winding in the transformer assembly 200 that is connected in parallel with the first-stage winding 220. It is sleeved on the magnetic core 100 and positioned close to the primary winding 210 in the first direction a (the length direction of the magnetic core 100). The parallel structure can improve the current output capability of the transformer's secondary side, adapting to the power supply requirements of high-power LLC resonant topology circuits. The third output structure 231 / fourth output structure 232 are components in the second-stage winding 230 used to achieve electrical connection with the sub-board of the circuit board 10. They are spaced apart along the second direction b (perpendicular to the first direction a). The third output structure 231 is electrically connected to the second sub-board 12, and the fourth output structure 232 is plugged into and adapted to the first sub-board 11. The third second connecting plate 2321 and the fourth second connecting plate 2322 are two mutually perpendicular connecting components in the fourth output structure 232. The third second connecting plate 2321 is perpendicular to the first direction a (the length direction of the magnetic core 100) and mainly undertakes the functions of current conduction and structural support to ensure the stability of the current transmission path. The fourth second connecting plate 2322 is perpendicular to the second direction b and is used to extend the connection path and set the plug-in structure. The second plug-in part is a protrusion extending along the third direction c (perpendicular to both the first direction a and the second direction b) on the fourth second connecting plate 2322. It has the size and shape to match the slot or pad of the first daughter board 11. The mechanical fixation and electrical connection between the fourth output structure 232 and the first daughter board 11 are realized through plug-in cooperation.

[0038] It is understandable that the parallel connection of the primary winding 220 and the secondary winding 230, combined with the coordinated layout of their respective output structures, can significantly enhance the current output capability of the transformer secondary side, adapting to the requirements of high-power LLC resonant topology circuits. When the power of an LLC resonant topology circuit increases, the transformer secondary side requires a greater current carrying capacity. Traditional single primary windings are prone to increased heat loss due to excessive current. In this embodiment, the secondary winding 230 is connected in parallel with the primary winding 220, both sharing the secondary side current output. This effectively diverts the current load of a single winding, reducing winding heat and power loss. Simultaneously, the secondary winding 230 is positioned close to the primary winding 210 in the first direction a, forming a symmetrical close-range layout with the primary winding 220. This enhances the electromagnetic coupling between the primary and secondary windings, reduces leakage inductance, improves energy conversion efficiency, and ensures that the transformer can still stably transmit energy in high-power scenarios, avoiding circuit performance degradation due to insufficient power.

[0039] In some embodiments of this application, please refer to Figure 6 , Figure 6A schematic diagram of the transformer structure provided in an embodiment of this application is shown. In this embodiment, along the first direction a, the primary winding 210, the secondary winding 230 and the first primary winding 220 are arranged in sequence; along the first direction a, the third output structure 231 and the second output structure 222 are stacked in sequence.

[0040] Understandably, the two secondary windings are arranged adjacent to the primary winding 210 along the first direction a, and the three are arranged in a close manner on the magnetic core 100. The alternating magnetic field generated by the primary winding 210 when energized can more fully cover the two secondary windings and reduce magnetic field leakage. At the same time, the two secondary windings are symmetrically distributed on one side of the primary winding 210, forming a balanced magnetic coupling path, avoiding uneven magnetic field distribution caused by winding offset, which is conducive to further reducing leakage inductance loss.

[0041] Please refer to the embodiments described in this application. Figure 6 The transformer assembly 200 in this embodiment also includes a first fixing plate 240 and a second fixing plate 250 sleeved on the magnetic core 100, and a primary winding 210, a secondary winding 230 and a primary winding 220 sandwiched between the first fixing plate 240 and the second fixing plate 250.

[0042] It should be explained that the first fixing plate 240 is an insulating component in the transformer assembly 200 used for positioning and supporting the windings. It is sleeved on the magnetic core 100 and located on one side of the windings. It is usually made of high-temperature resistant insulating materials such as epoxy board and insulating plastic. It can limit the radial and axial displacement of the windings in the magnetic core 100 and isolate the windings from electrical contact with external structures. The second fixing plate 250 is an insulating support component symmetrically arranged with the first fixing plate 240. It is also sleeved on the magnetic core 100 and located on the other side of the windings. It cooperates with the first fixing plate 240 to form a clamping structure, which together fixes the primary winding 210, the secondary winding 230 and the primary winding 220 in the middle. This can further enhance the stability of the winding layout and prevent the windings from loosening or shifting due to vibration and temperature changes.

[0043] Understandably, the first fixing plate 240 and the second fixing plate 250 form a rigid clamp from both sides of the winding, restricting the movement of the winding in the first direction a (the length direction of the magnetic core 100) and radially, ensuring that the primary winding 210, the secondary winding 230 and the primary winding 220 always maintain a compact arrangement sequence of "primary-secondary-primary", avoiding structural deformation caused by loose windings, and providing structural support for the long-term stable operation of the transformer.

[0044] Please refer to the embodiments described in this application. Figure 4In this embodiment, an insulating film layer 260 is provided between at least any two adjacent parts of the first fixing plate 240, primary winding 210, secondary winding 230, primary winding 220 and second fixing plate 250.

[0045] It should be explained that the insulating film layer 260 is a thin film material with electrical insulation and temperature resistance properties. Common materials include polyimide film, polyester film, etc. It can be tightly attached to the surface of transformer components. Its core function is to block the electrical conduction path between adjacent components to prevent leakage or short circuit. At the same time, it has a certain degree of temperature resistance to adapt to the temperature changes during transformer operation.

[0046] Understandably, the insulating film layer 260 is attached to the contact surface of adjacent components (such as between the first fixing plate 240 and the primary winding 210, and between the primary winding 210 and the secondary winding 230), which can directly block the electrical conduction between components. Even if a certain layer of insulation (such as the insulation layer of the winding itself) fails, the insulating film layer 260 can still maintain the insulation effect, forming "double insulation protection". At the same time, the insulating film layer 260 can prevent the metal winding and the fixing plate (if containing conductive impurities) from forming a conductive path, further reducing the risk of short circuit.

[0047] Please refer to the embodiments described in this application. Figure 1 The number of transformer components 200 is at least two, and the at least two transformer components 200 are arranged along the first direction a; the primary coils of the at least two transformer components 200 are connected in series.

[0048] It is understood that in this embodiment, the primary coils of at least two transformer components 200 are connected in series to accommodate higher input voltages. Simultaneously, the secondary windings of each component can synchronously output current, with the total output current being the sum of the secondary currents of each component, significantly improving the current carrying capacity of the transformer's secondary side. For example, when the primary coils of two transformer components 200 are connected in series, the input voltage is shared by the two primary windings 210, halving the voltage load on each primary winding 210. The secondary side can then output current through the parallel connection of the two secondary windings, doubling the total current. This effectively avoids overload of a single component and adapts to the high-power (e.g., kilowatt-level and above) operation requirements of LLC resonant topology circuits.

[0049] In some embodiments, please continue reading Figure 1 The number of transformer components 200 is three.

[0050] In some embodiments of this application, please refer to Figure 7 , Figure 7A schematic diagram of the transformer provided in this embodiment is shown. The transformer in this embodiment has an adjacent first side and a second side. The first side is used to be installed with the first sub-board 11, and the second side is used to be installed with the second sub-board 12. The primary coils in at least two transformer assemblies 200 are connected in series to form a series structure, and the series structure extends to the second side and is connected to the second sub-board 12.

[0051] Understandably, the overall structure formed by multiple primary windings 210 connected in series extends directly to the second side. The electrical connection of the primary side can be completed by a single-point connection between the second side and the second sub-board 12, without the need for additional wires, which greatly simplifies the wiring of the primary side. At the same time, the design of the series structure extending to the second side makes the current path of the primary side shorter, reduces the heat loss caused by the resistance of the wires, and improves the energy transmission efficiency of the primary side.

[0052] In some embodiments of this application, a fixing plate is reused between two adjacent transformer components 200; At least two transformer assemblies 200 include a first transformer assembly 200, a second transformer assembly 200, and a third transformer assembly 200 disposed along a first direction a; Along the first direction a, the first fixing plate 240, primary winding 210, secondary winding 230, primary winding 220, second fixing plate 250 of the first transformer assembly 200, the primary winding 210, secondary winding 230, primary winding 220, second fixing plate 250 of the second transformer assembly 200, and the primary winding 210, secondary winding 230, primary winding 220, and second fixing plate 250 of the third transformer assembly 200 are arranged sequentially.

[0053] It is understandable that adjacent transformer components 200 share a single reused fixing plate, directly reducing the thickness occupied by a fixing plate and making the arrangement of multiple components along the first direction a more compact. The fixing plate can simultaneously serve as a first fixing plate 240 of one transformer component 200 and a second fixing plate 250 of another transformer component 200. Alternatively, the fixing plate can simultaneously serve as a second fixing plate 250 of one transformer component 200 and a first fixing plate 240 of another transformer component 200.

[0054] Please refer to the embodiments described in this application. Figure 2 The transformer in this embodiment also includes a first connecting plate 500, and the two fixing plates that are furthest apart among the plurality of transformer components 200 are connected through the first connecting plate 500.

[0055] It should be explained that the first connecting plate 500 is a connecting component in the transformer used to reinforce the overall structure of multiple transformer components 200. It is usually made of rigid insulating material (such as epoxy board or high-strength plastic) and is not directly sleeved on the magnetic core 100. Instead, it connects the two fixing plates that are furthest apart among the multiple transformer components 200 (such as the outermost first fixing plate 240 and the outermost second fixing plate 250). Its core function is to integrate the dispersed transformer components 200 into a stable whole and prevent the multiple components from becoming loose or offset along the first direction a or radial direction. It is a key component for improving the overall structural integrity of multi-component transformers.

[0056] Understandably, the first connecting plate 500 connects the two farthest fixed plates, forming a structure with pull at both ends and overall constraint. This can firmly confine all transformer components 200 to the preset arrangement path, preventing the local displacement of a single component from spreading into overall structural deformation. For example, when three transformer components 200 are arranged along the first direction a, the first connecting plate 500 connects the first fixed plate 240 of the first component and the second fixed plate 250 of the third component, forming a rigid support spanning the three components. Even if the middle component is affected by temperature expansion force, it can be confined within a fixed range by the first connecting plate 500, ensuring the stability of the overall multi-component structure.

[0057] In some embodiments, the first connecting plate 500 is disposed along a first direction a.

[0058] Please refer to the embodiments described in this application. Figure 2 and Figure 3 In this embodiment, the first windings 220 of two adjacent transformer components 200 are spaced apart along the first direction a.

[0059] It is understood that, since the first output structure 221 of the first primary winding 220 in this embodiment forms an L-shaped structure (the first plate 2211 and the second plate 2212 are perpendicular), by setting two adjacent primary windings 220 at intervals, the risk of short circuit between two adjacent primary windings 220 can be reduced.

[0060] In some embodiments, please continue reading Figure 2 and Figure 4 The secondary windings 230 in two adjacent transformer components 200 are spaced apart along the first direction a.

[0061] It is understood that, since the fourth output structure 232 of the second stage winding 230 in this application embodiment forms an L-shaped structure (the third second connecting plate 2321 and the fourth second connecting plate 2322 are perpendicular), by setting two adjacent second stage windings 230 to be spaced apart, the risk of short circuit between two adjacent second stage windings 230 can be reduced.

[0062] Please refer to the embodiments described in this application. Figure 3 The transformer in this embodiment includes a second connecting plate 600, which is used to electrically connect with the second sub-board 12. The second connecting plate 600 is provided with a connecting hole 610. The second output structure 222 and the third output structure 231 are inserted into the connecting hole 610 and electrically connected to the second connecting plate 600.

[0063] It should be explained that the second connecting plate 600 is a transitional component in the transformer used to electrically connect the secondary winding output structure to the second daughter plate 12. It is typically made of a metal material with excellent conductivity (such as copper or copper alloys), and can integrate the current transmission paths of multiple secondary output structures, ensuring stable current transmission to the second daughter plate 12. It also serves to fix the output structure and optimize the wiring layout. The connecting hole 610 is a through-hole structure formed on the second connecting plate 600. Its size is adapted to the shape of the second output structure 222 and the third output structure 231, allowing the two output structures to be inserted and physically fixed and electrically connected, forming a stable contact without additional welding or fasteners.

[0064] It is understandable that, since the primary winding 220 and the secondary winding 230 need to transmit current to the second sub-board 12, if the two output structures are directly and separately connected to the second sub-board 12, the current transmission impedance will easily increase due to inconsistent wiring lengths and too many contact points, resulting in additional heat loss. However, in this embodiment, the two output structures are connected to the second connecting plate 600 through the connecting hole 610. The second connecting plate 600, as a conductive transition component, can shorten the current transmission path from the output structure to the second sub-board 12, and the low impedance characteristic of the metal second connecting plate 600 can reduce current loss. At the same time, the current of the two output structures is evenly converged on the second connecting plate 600, avoiding local overheating caused by uneven current distribution, and adapting to the high current transmission requirements of the transformer secondary side.

[0065] Please refer to the embodiments described in this application. Figure 1 The transformer in this embodiment includes a magnet 300, and a cavity is formed inside the magnet 300 for accommodating the transformer assembly 200 and the magnetic core 100. The magnetic core 100 is connected to the magnet 300.

[0066] It should be explained that the magnet 300 is a component in the transformer used to construct magnetic shielding and structural support. It is usually made of magnetically conductive materials (such as ferrite, silicon steel sheets) or composite magnetic materials. It forms a cavity inside that can accommodate the transformer assembly 200 and the magnetic core 100. Its core function is to concentrate the magnetic field generated by the magnetic core 100 and the winding, reduce the leakage of the magnetic field to the outside, and at the same time provide physical protection and fixed support for the transformer assembly 200.

[0067] It is understandable that when the windings of a transformer are energized, they will generate an alternating magnetic field. If there is a lack of magnetic shielding, leakage magnetic field will interfere with the normal operation of surrounding electronic components (such as synchronous rectifier MOSFETs and control chips), affecting circuit stability. In this embodiment, the magnet 300 encloses the transformer assembly 200 and the magnetic core 100 in a cavity. Its magnetic permeability can guide the magnetic field to be transmitted along the closed path formed by the magnet 300 and the magnetic core 100, preventing the magnetic field from leaking into the external space. At the same time, the magnet 300 can block stray magnetic fields from the external environment from entering the cavity, reducing the impact of external interference on the electromagnetic coupling of the transformer assembly 200.

[0068] In some embodiments, the magnetic core 100 has a cylindrical or prismatic structure.

[0069] Please refer to the embodiments described in this application. Figure 1 The transformer in this embodiment also includes a fourth fixing plate 400, which is disposed on the second side of the transformer and fixed to the magnet 300; wherein, the fourth fixing plate 400 is provided with at least two fixing holes, and the second connecting plate 600 and the series structure are fixed in the fixing holes.

[0070] It should be explained that the fourth fixing plate 400 is a structural fixing component installed on the second side of the transformer (the side used for installation with the second sub-plate 12). It is usually made of insulating and rigid materials (such as epoxy board or high-temperature resistant plastic). Its core function is to fix the second connecting plate 600 and the primary coil series structure. At the same time, it serves as a transition carrier for the assembly of the second side of the transformer and the second sub-plate 12, ensuring the stability of the position of key electrical components on the second side and preventing loosening of the connection due to vibration or assembly. The fixing holes are hole-like structures opened on the fourth fixing plate 400. Their size is adapted to the shape of the second connecting plate 600 and the primary coil series structure. They are used to precisely fix the two on the fourth fixing plate 400, realizing the mechanical positioning and relative position locking of the "component-fixing plate". This ensures the stability of the electrical connection and avoids interference between different components due to displacement.

[0071] It is understood that in this embodiment of the application, the fourth fixing plate 400 is set to work in conjunction with the fixing plates of the magnet 300 and the transformer assembly 200. It not only realizes the positioning of the second connecting plate 600 and the series structure through the fixing holes, but also supports the winding with the clamping effect of the magnet 300 and the fixing plate. It completely replaces the "support + positioning + insulation" function of the frame, saves the material cost and installation space of the frame, and makes the overall structure of the transformer more compact.

[0072] In some embodiments, please continue reading Figure 1 The primary coil includes an output pin 211 connected in series, and the output pin 211 is fixed in a fixing hole.

[0073] In some embodiments, the output pin 211, the second connecting plate 600, and the fixing hole are bonded together with epoxy adhesive.

[0074] In some embodiments of this application, please refer to Figure 8 , Figure 8 A schematic diagram of the transformer provided in this embodiment is shown. The transformer in this embodiment also includes tape 700, which is wrapped around the fourth fixing plate 400 and the magnet 300 to fix the fourth fixing plate 400 and the magnet 300.

[0075] It should be explained that the tape 700 is a strip-shaped adhesive component used to fix the fourth fixing plate 400 of the transformer and the magnet 300. It can be made of a material that is resistant to high temperature, has strong insulation and a certain degree of toughness (such as polyimide tape 700 or acetate cloth tape 700). By wrapping, the fourth fixing plate 400 and the magnet 300 are tightly attached and fixed, which enhances the stability of the connection between the two. At the same time, it has insulation properties to prevent the fourth fixing plate 400 and the magnet 300 (if they contain conductive impurities) from forming an electrical path.

[0076] It is understandable that the fourth fixing plate 400 bears the function of fixing the second connecting plate 600 (secondary side) and the primary coil series structure (primary side). The stability of its connection with the magnet 300 directly affects the positional accuracy of key electrical components. If the two are only attached to each other without additional fixing, the vibration or thermal expansion and contraction during transformer operation can easily lead to an increase in the gap, which in turn can cause the connection between the second connecting plate 600, the series structure and the second sub-plate 12 to loosen. In this embodiment, the tape 700 forms a circumferential constraint force by wrapping, which tightly fixes the fourth fixing plate 400 to the magnet 300 and eliminates the connection gap. At the same time, the toughness of the tape 700 can buffer the vibration impact force, reduce the relative movement between the fourth fixing plate 400 and the magnet 300, and ensure that the second-side integrated components (second connecting plate 600 and series structure) always maintain the preset position, thus ensuring the stability of the primary and secondary side current transmission.

[0077] In some embodiments, the magnet 300 includes a detachable first part and a second part.

[0078] Please refer to the embodiments described in this application. Figure 1 In this embodiment, the primary winding 210 is a coil, and the first primary winding 220 and the second primary winding 230 are copper sheets.

[0079] Furthermore, in order to better implement the transformers of any of the above embodiments, based on the transformers described above, this application also provides a transformer device, including the transformers described above.

[0080] In some embodiments of this application, the transformer device further includes a circuit board 10, which includes a first sub-board 11 and a second sub-board 12. The first sub-board 11 is provided with functional devices, which are offset from the first output structure 221 and the second output structure 222. The functional devices are switching devices and / or heat sinks.

[0081] In some embodiments, the switching device is a MOSFET.

[0082] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0083] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0084] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0085] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0086] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A transformer, characterized in that, The transformer is mounted on a circuit board, the circuit board including a first sub-board and a second sub-board that are perpendicular to each other, the transformer including a magnetic core, the length direction of the magnetic core being a first direction; the transformer also includes a transformer assembly, the transformer assembly including: The primary winding is sleeved on the magnetic core; The first stage winding is sleeved on the magnetic core, and in a first direction, the first stage winding is close to the primary winding; the first stage winding includes a first output structure and a second output structure spaced apart along a second direction, the second direction being perpendicular to the first direction; the first output structure is plugged into and adapted to the first sub-board, and the second output structure is electrically connected to the second sub-board; The first output structure includes a first plate and a second plate that are connected to each other and perpendicular to each other. The first plate is perpendicular to the first direction, and the second plate is perpendicular to the second direction. The second plate has a first plug-in portion that extends along a third direction and is plugged into and adapted to the first sub-board.

2. The transformer according to claim 1, characterized in that, The transformer assembly further includes a second stage winding connected in parallel with the first stage winding. The second stage winding is sleeved on the magnetic core, and in the first direction, the second stage winding is positioned close to the primary winding. The second stage winding includes a third output structure and a fourth output structure spaced apart along the second direction. The fourth output structure is plugged into and adapted to the first sub-board, and the third output structure is electrically connected to the second sub-board. The third output structure is connected to the second output structure, and the fourth output structure is disposed on the side of the second output structure that is away from the first output structure. The first output structure includes a third second connecting plate and a fourth second connecting plate that are interconnected and perpendicular to each other. The third second connecting plate is perpendicular to the first direction, and the fourth second connecting plate is perpendicular to the second direction. The fourth second connecting plate has a second plug-in portion that extends along the third direction and is plugged into and adapted to the first sub-board.

3. The transformer according to claim 2, characterized in that, Along the first direction, the primary winding, the secondary winding, and the first primary winding are arranged sequentially; Along the first direction, the third output structure and the second output structure are stacked sequentially; And / or, the transformer assembly further includes a first fixing plate and a second fixing plate sleeved on the magnetic core, with the primary winding, the secondary winding and the first primary winding sandwiched between the first fixing plate and the second fixing plate.

4. The transformer according to claim 3, characterized in that, An insulating film layer is provided between at least any two adjacent components of the first fixing plate, the primary winding, the secondary winding, the first primary winding, and the second fixing plate.

5. The transformer according to any one of claims 1 to 4, characterized in that, The number of transformer components is at least two, and the at least two transformer components are arranged along the first direction; the primary coils of the at least two transformer components are connected in series.

6. The transformer according to claim 5, characterized in that, The transformer has an adjacent first side and a second side, the first side being used for mounting to the first sub-board and the second side being used for mounting to the second sub-board; the primary coils of the at least two transformer assemblies are connected in series to form a series structure, and the series structure extends to the second side and is connected to the second sub-board.

7. The transformer according to claim 6, characterized in that, A fixing plate is shared between two adjacent transformer components; At least two transformer assemblies include a first transformer assembly, a second transformer assembly, and a third transformer assembly disposed along the first direction; Along the first direction, the first fixing plate, primary winding, secondary winding, primary winding, and second fixing plate of the first transformer assembly, the primary winding, secondary winding, primary winding, and second fixing plate of the second transformer assembly, and the primary winding, secondary winding, primary winding, and second fixing plate of the third transformer assembly are arranged sequentially.

8. The transformer according to claim 7, characterized in that, The transformer also includes a first connecting plate, through which the two fixing plates that are furthest apart among the plurality of transformer components are connected.

9. The transformer according to claim 6, characterized in that, The primary windings of two adjacent transformer components are spaced apart along the first direction; And / or, the second stage windings in two adjacent transformer assemblies are spaced apart along the first direction.

10. The transformer according to claim 6, characterized in that, The transformer includes a second connecting plate for electrical connection with the second sub-plate. The second connecting plate is provided with connecting holes, and the second output structure and the third output structure are inserted into the connecting holes and electrically connected to the second connecting plate.

11. The transformer according to claim 10, characterized in that, The transformer includes a magnet, and a cavity is formed within the magnet for accommodating the transformer assembly and the magnetic core, the magnetic core being connected to the magnet; And / or, the magnetic core is a cylindrical structure or a prismatic structure.

12. The transformer according to claim 11, characterized in that, The transformer also includes a fourth fixing plate, which is disposed on the second side of the transformer and fixed to the magnet. The fourth fixing plate is provided with at least two fixing holes, and the second connecting plate and the series structure are fixed in the fixing holes.

13. The transformer according to claim 11, characterized in that, The transformer also includes tape wrapped around the fourth fixing plate and the magnet to fix the fourth fixing plate and the magnet.

14. The transformer according to claim 2, characterized in that, The primary winding is a coil, and the first and second primary windings are copper sheets.

15. A transformer device, characterized in that, Including the transformer as described in any one of claims 1 to 14.

16. The transformer equipment according to claim 15, characterized in that, The transformer equipment also includes a circuit board, which includes a first sub-board and a second sub-board. Functional devices are provided on the first sub-board, and the functional devices are offset from the first output structure and the second output structure. The functional device is a switching device and / or a heat sink.

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