Transformer magnetic core, transformer magnetic core assembly, and transformer

Abstract

The embodiment of the present application relates to the technical field of magnetic components, and particularly discloses a transformer magnetic core, a transformer magnetic core assembly and a transformer. The transformer magnetic core comprises a magnetic core base, two side columns, a middle column and a support column. The magnetic core base comprises a first surface arranged along the height direction thereof. The two side columns, the middle column and the support column all extend from the first surface of the magnetic core base in a direction away from the magnetic core base. Along the length direction of the magnetic core base, the two side columns are arranged at the two ends of the magnetic core base, the middle column is arranged between the two side columns, the middle column and the two side columns are both arranged at intervals, the support column is arranged between the two side columns, and the support column and the middle column are arranged at intervals. The extension height of the middle column is not greater than the extension height of the two side columns and the extension height of the support column, and the extension height of the two side columns and the extension height of the support column are the same. When two transformer magnetic cores are assembled, the air gap can be reduced, the magnetic core loss can be reduced, and the heat dissipation efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of magnetic components technology, and in particular to a transformer core, a transformer core assembly, and a transformer. Background Technology

[0002] As a core component of power electronic equipment, the performance of the transformer's core structure directly affects the overall efficiency, reliability, and power density of the device. With the rapid development of power electronics technology towards higher frequencies and miniaturization, higher demands are placed on the loss control and heat dissipation performance of transformer cores. In traditional transformer core structures, an excessively large air gap leads to severe leakage of magnetic field lines near the gap. These leaked lines form eddy currents on the surrounding wound wires, generating losses and heat, with the eddy currents becoming more severe closer to the air gap. Simultaneously, the air gap increases core losses and causes excessively high local core temperatures, potentially leading to core cracking. Therefore, how to reduce core losses caused by the air gap and improve heat dissipation efficiency while ensuring core performance has become a pressing technical problem to be solved in this field. Utility Model Content

[0003] In view of the above problems, embodiments of this application provide a transformer core, a transformer core assembly, and a transformer, which overcome the above problems or at least partially solve the above problems.

[0004] According to one aspect of this application, a transformer core is provided, including a core base, the core base being rectangular plate-shaped, the core base including a first surface disposed along its height direction; two side posts extending from the first surface of the core base in a direction away from the core base, along the length direction of the core base, the two side posts being spaced apart at both ends of the core base; and a central post, the central post being oblong-cylindrical, the central post extending from the first surface of the core base in a direction away from the core base, and the length direction of the central post being the same as the length direction of the core base, along the height direction of the core base. Along the length of the core base, the central column is positioned between the two side columns, and the central column and the two side columns are spaced apart. A support column extends from the first surface of the core base in a direction away from the core base. Along the length of the core base, the support column is positioned between the two side columns, and the support column is spaced apart from the two side columns and from the central column. The extension height of the two side columns is the same as the extension height of the support column, and the extension height of the central column is not greater than the extension height of the two side columns and the extension height of the support column.

[0005] In one alternative embodiment, the number of central pillars is at least two, and the at least two central pillars are arranged sequentially at intervals. Along the length direction of the magnetic core base, the support pillar is arranged between two adjacent central pillars.

[0006] In one alternative embodiment, the number of support columns is at least two, wherein two support columns are disposed between two adjacent central columns along the width direction of the magnetic core base, and the two support columns are spaced apart.

[0007] In one alternative embodiment, the support post is disposed on one side of the magnetic core base along the width direction of the magnetic core base.

[0008] In one alternative embodiment, the support column is triangular in shape, and the support column includes a base and two side sides connected in sequence; the magnetic core base includes two long sides arranged opposite to each other, and the two long sides are parallel to the base.

[0009] In one alternative approach, the projection of the bottom edge and the projection of one of the long edges coincide along the height direction of the magnetic core base.

[0010] In one alternative embodiment, the support post extends from one side of the magnetic core base to the other side of the magnetic core base along the width direction of the magnetic core base.

[0011] In one alternative embodiment, each of the side posts has a relief groove at one end facing the center post. The relief groove is arc-shaped and is used to accommodate the winding.

[0012] In one alternative embodiment, each of the side posts has a limiting groove at one end away from the center post, the limiting groove being used for positioning with the snap-fit ​​component.

[0013] In one alternative embodiment, the magnetic core base is provided with a second surface disposed opposite to the first surface, and the second surface is provided with slots at both ends along its length, each slot communicating with a corresponding limiting slot, and each slot being used to connect with a snap-fit ​​component.

[0014] According to another aspect of this application, a transformer core assembly is provided, comprising two transformer cores as described above, wherein each of the side posts of each transformer core abuts against a side post of the other transformer core, the center post of each transformer core abuts against the center post of the other transformer core, and the support post of each transformer core abuts against the support post of the other transformer core.

[0015] According to another aspect of this application, a transformer is provided, which includes windings and a transformer core as described above, or the transformer includes a transformer core assembly as described above, with the windings wound around a center post.

[0016] The beneficial effects of this application embodiment are as follows: Unlike the prior art, in this application embodiment, the extension height of the side posts and the extension height of the support posts of the transformer core are the same. When two transformer cores are assembled together, the side posts of the two transformer cores can be brought into close contact, reducing the air gap between the two transformer cores and thus reducing core losses. Furthermore, the support posts of the two transformer cores can also be brought into close contact, allowing for rapid heat conduction between the two transformer cores and improving heat dissipation efficiency. In addition, the core base is designed as a rectangular plate, and the central post is designed as an oblong column, which can improve the strength of the transformer core without increasing the overall volume. Furthermore, the support posts further enhance the strength of the transformer core and prevent the core base from cracking under high-temperature conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the overall structure of the transformer core according to an embodiment of this application from an angle. Figure 2 This is a schematic diagram of the overall structure of another embodiment of the transformer core of this application; Figure 3 This is another schematic diagram of the overall structure of the transformer core according to an embodiment of this application; Figure 4 This is another schematic diagram of the overall structure of the transformer core according to an embodiment of this application; Figure 5 This is a schematic diagram of the overall structure of another embodiment of the transformer core of this application. Detailed Implementation

[0019] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0022] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" in this document merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: the existence of A, the simultaneous existence of A and B, and the existence of B. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0024] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0026] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0027] Please see Figure 1 The transformer core 1000 includes a core base 10, a support column 20, a central column 30, and two side columns 40. The support column 20, the central column 30, and the two side columns 40 are all disposed on the same surface of the core base 10. The two side columns 40 are disposed at both ends of the core base 10 along its length. The central column 30 is disposed between the two side columns 40. The support column 20 is disposed between the two side columns 40, and the support column 20 and the central column 30 are spaced apart.

[0028] It should be noted that the transformer core in this embodiment includes a core base 10. This core base 10 cannot independently form a closed magnetic circuit. In practical applications, it needs to be paired with an external magnetic guide component. The end of the central column 30 on the core base 10 cooperates with the external magnetic guide component to jointly construct a complete closed magnetic circuit, thus enabling the electromagnetic conversion function of the transformer. The external magnetic guide component can be an independent magnetic guide cover or a paired magnetic core. This application does not limit the specific structure of the external magnetic guide component.

[0029] For the aforementioned magnetic core base 10, central post 30, and side post 40, as Figure 1As shown, the core base 10 is a rectangular plate. The core base 10 includes a first surface 101 along its height direction and a second surface 102 opposite to the first surface 101. Two side posts 40 extend from the first surface 101 of the core base 10 in a direction away from the core base 10. Along the length of the core base 10, the two side posts 40 are spaced apart at both ends of the core base 10. A central post 30 is positioned between the two side posts 40 along the length of the core base 10, with the central post 30 and the two side posts 40 spaced apart. The windings in the transformer can be sleeved on the outside of the central post 30. The two side posts 40, arranged at both ends of the core base 10, form solid walls at both ends along the length of the core base 10, providing protection for the winding area on the core base 10. This reduces the direct impact and compression of the windings on the core base 10 during core handling and assembly, protecting the windings and reducing the risk of insulation damage. Meanwhile, the two side posts 40 can also improve the overall structural rigidity of the core base 10, and the central post 30 is set as an elongated cylindrical shape, which can improve the strength of the transformer core 1000 without increasing the overall volume.

[0030] In some embodiments, the length direction of the central column 30 is the same as the length direction of the magnetic core base 10, so as to make full use of the internal space of the magnetic core base 10 along the length direction, increase the effective magnetic conduction cross-sectional area of ​​the central column 30, and help reduce magnetic density and reduce magnetic core loss.

[0031] In some embodiments, a cavity 10a is provided on the core base 10, and the central column 30 is located inside the cavity 10a. The cavity 10a can be used to accommodate at least a portion of the winding.

[0032] In some embodiments, there are multiple cavities 10a, which are spaced apart along the length of the magnetic core base 10. Each cavity 10a contains a central post 30, which is an elongated cylindrical shape and extends from the first surface 101 of the magnetic core base 10 in a direction away from the magnetic core base 10. The multiple central posts 30 are spaced apart along the length of the magnetic core base 10. It should be noted that when the magnetic core base 10 and the external magnetic conductive component cooperate to form a complete closed magnetic circuit, the multiple cavities 10a on the magnetic core base 10 cooperate with the external magnetic conductive component to form multiple magnetic circuit cavities 10a. The windings in the transformer are sleeved on the outside of the central post 30, and each magnetic circuit cavity 10a corresponds to an independent magnetic circuit, so as to realize the integration of multiple winding magnetic circuits.

[0033] In some embodiments, the number of central columns 30 is at least two, and at least two central columns 30 are arranged at intervals in sequence. Along the length direction of the magnetic core base 10, the support column 20 is arranged between two adjacent central columns 30.

[0034] In some embodiments, please refer to the following: Figure 2Each side post 40 has a relief groove 40c at one end facing the center post 30. The relief groove 40c is arc-shaped and is used to accommodate the winding. The corners of the winding can be tucked inside the relief groove 40c, reducing the direct compression of the side post 40 by the winding, thereby reducing the impact of the side post 40 on the winding. The relief groove 40c can provide arrangement space for the installation of the winding and is suitable for large wire diameter and multi-turn winding arrangements.

[0035] It should be noted that after the magnetic core base 10 and the mating magnetic core are assembled, if there is a lack of locking constraints, the two halves of the magnetic core are prone to displacement and separation under vibration and impact conditions. This will cause the magnetic circuit mating gap to increase, the excitation inductance to drift, and the leakage flux to increase, directly affecting the electromagnetic performance of the device. Therefore, during assembly, an external snap-fit ​​device can be used to press and fix the magnetic core base 10 and the mating magnetic core tightly. This external snap-fit ​​device can be a hook.

[0036] In some embodiments, please refer to the following: Figure 3 and Figure 4 Each side post 40 has a limiting groove 40a at one end opposite to the center post 30. The limiting groove 40a is used to position the snap-fit ​​component. The limiting groove 40a can be used to accommodate the snap-fit ​​component and laterally limit its movement to reduce lateral slippage. It can also avoid collisions and reduce spatial interference caused by the outward protrusion of the snap-fit ​​component.

[0037] In some embodiments, the second surface 102 has slots 40b at both ends along its length, each slot 40b communicating with a corresponding limiting groove 40a, and each slot 40b being used to connect with a snap-fit ​​component. The slots 40b provide a locking fulcrum for the snap-fit ​​component, and the slots 40b and limiting grooves 40a are interconnected to form a continuous assembly space, which can pre-position the snap-fit ​​component and facilitate assembly.

[0038] It should be noted that after the two halves of the magnetic core are assembled together, both ends in the length direction can be locked simultaneously using snap-fit ​​components, so that both ends are locked synchronously, the force is balanced, and the clamping effect is more uniform.

[0039] In some embodiments, the slot opening of the card slot 40b is trapezoidal. All card slots 40b adopt a trapezoidal slot opening, with the opening width being greater than the bottom width, forming an outwardly expanding sloping transition structure. The trapezoidal expansion increases the area of ​​the entrance region of the two card slots 40b, playing a guiding and guiding role, making it easier for the snap-fit ​​component to slide into the card slot 40b along the sloping surface, dispersing the assembly extrusion stress, and improving the structural toughness of the slot opening part of the card slot 40b.

[0040] In some embodiments, such as Figure 1As shown, the magnetic core base 10 is also provided with a first notch 10b and a second notch 10c that penetrate the cavity 10a along the width direction of the magnetic core base 10. The first notch 10b and the second notch 10c are arranged opposite each other along the width direction. The first notch 10b and the second notch 10c form through windows on both sides of the width of the cavity 10a. The lead wires of the winding inside the cavity 10a can be led outward through the first notch 10b and / or the second notch 10c. Users can choose to lead out from either side or both sides according to the overall layout, which is flexible and adaptable to different power supply assembly spaces. At the same time, the first notch 10b and the second notch 10c penetrate the cavity 10a, and tools for winding and terminal soldering can be inserted into the cavity 10a through the first notch 10b or the second notch 10c, which is convenient for winding, terminal soldering, maintenance and other operations. In addition, the first notch 10b and the second notch 10c remove some material, reduce the overall weight of the magnetic core base 10, facilitate device lightweighting and reduce material costs.

[0041] In some embodiments, the number of cavities 10a is three, and the number of central columns 30 is three. The three cavities 10a and three central columns 30 are paired one-to-one to form three independent magnetic circuit units, particularly suitable for equipment such as three-phase converters, three-phase charging piles, and three-phase inverter power supplies. It is understood that the number of cavities 10a and central columns 30 can be set by the user according to actual needs; for example, the number of cavities 10a and central columns 30 can be set to two, four, or more, thus adapting to the application requirements of two-phase, four-phase, or more integrated magnetic circuits.

[0042] For the aforementioned support column 20, as Figure 1 As shown, the support column 20 extends from the first surface 101 of the magnetic core base 10 in a direction away from the magnetic core base 10. Along the length of the magnetic core base 10, the support column 20 is positioned between two side columns 40, with the support column 20 spaced apart from the two side columns 40 and spaced apart from the central column 30. When the two magnetic core bases 10 are joined together, the user can first use the support columns 20 to contact / align with each other, which serves as a pre-positioning guide to help the cavities 10a at different positions on the two magnetic core bases 10 to accurately align to obtain multiple magnetic circuit cavities 10a, reduce the risk of assembly misalignment, ensure the alignment accuracy of each magnetic circuit cavity 10a, and reduce the impact on the magnetic properties of the magnetic core.

[0043] In some embodiments, the support column 20 and the magnetic core base 10 are integrally formed, thereby eliminating the interface and adhesive gaps between the support column 20 and the magnetic core base 10, resulting in good overall integrity. When subjected to mechanical vibration and thermal stress caused by thermal expansion and contraction during operation, this reduces the occurrence of cracking and detachment at the splicing / adhesive interface, improves the overall mechanical reliability of the magnetic core, and reduces the risk of breakage and failure of the support column 20.

[0044] In some embodiments, the extension height of the two side posts 40 is the same as the extension height of the support post 20. When the two transformer cores 1000 are assembled together, the side posts 40 of the two transformer cores 1000 can be brought into close contact, thereby reducing the air gap between the two transformer cores 1000 and reducing core loss. The support posts 20 of the two transformer cores 1000 are also brought into close contact, so that the two transformer cores 1000 can conduct heat quickly, thereby improving heat dissipation efficiency.

[0045] In some embodiments, the extension height of the central column 30 is not greater than the extension height of the two side columns 40 and the extension height of the support column 20. This means the extension height of the central column 30 is less than or equal to the extension height of the two side columns 40 and the extension height of the support column 20.

[0046] In some embodiments, the extension heights of the two side posts 40, the middle post 30, and the support post 20 are the same. When the two transformer cores 1000 are assembled together, the side posts 40, the middle post 30, and the support post 20 on the two cores are synchronously fitted together, reducing the defect of excessive gaps between some posts (side posts 40, middle posts 30, and support posts 20), and making the air gap of the magnetic circuit uniform and stable.

[0047] In some embodiments, the extension height of the central column 30 is less than the extension height of the two side columns 40 and the extension height of the support column 20. When the two transformer cores 1000 are assembled together, the side column 40, which is taller, and the support column 20 contact the paired core first, acting as a mechanical stop to restrict the two cores from getting closer. At this time, because the central column 30 is lower, a preset fixed air gap is formed between the top of the central column 30 and the central column 30 of the paired core. The central column 30 is the main magnetic circuit, and the fixed air gap at the central column 30 can change the total magnetic reluctance of the magnetic circuit, thereby adjusting the excitation inductance.

[0048] In some embodiments, the number of support columns 20 is at least two, wherein two support columns 20 are disposed between two adjacent central columns 30 along the width direction of the magnetic core base 10, and the two support columns 20 are spaced apart. A hollow space is formed between the two support columns 20, through which air inside the cavity 10a can flow, which is beneficial for heat dissipation of the windings inside the cavity 10a and reduces heat accumulation. At the same time, the formation of this hollow space removes some magnetic material from the magnetic core base 10, reduces the weight of the magnetic core base 10, and saves raw materials.

[0049] In some embodiments, a support post 20 is disposed on one side of the magnetic core base 10 along its width direction. The support post 20 is only arranged on one side of the width direction, leaving no support post 20 obstructing the other side of the magnetic core base 10's width direction, thus providing a complete passage space. This passage space not only facilitates the lead wires of the winding but also avoids obstructing components on other electronic devices when the magnetic core is assembled onto them, facilitating the adaptation and installation of the magnetic core.

[0050] In some embodiments, please refer to the following: Figure 2 Along the width direction of the magnetic core base 10, the support column 20 extends from one side of the magnetic core base 10 to the other side. The support column 20 is a single piece of connecting rib along the width direction of the magnetic core base 10. The single continuous rib has a large cross-sectional area, high mechanical strength, good bending and torsional resistance, and can withstand greater assembly clamping force and vibration impact. It is not prone to deformation damage. At the same time, the complete solid rib forms a continuous heat conduction channel, which facilitates sufficient heat exchange between adjacent cavities 10a, which is conducive to temperature balance and suppresses local hot spots.

[0051] In some embodiments, the support column 20 is a triangular column, comprising a base 201 and two side edges 202 connected in sequence. The magnetic core base 10 comprises two opposing long edges 103, which are parallel to the base 201. The triangular column shape of the support column 20 provides good stability and enhances its resistance to compression and bending. The base 201 of the support column 20 is parallel to the long edge 103 of the magnetic core base 10, increasing the connection length between the support column 20 and the root of the magnetic core base 10. This allows the compressive load borne by the support column 20 to be distributed and transferred along the base 201 to the magnetic core base 10. The two side edges 202 of the support column 20 are inclined surfaces, which can isolate and guide the winding, reducing the risk of the winding being damaged by sharp edges.

[0052] In some embodiments, along the height direction of the magnetic core base 10, the projection of the bottom edge 201 coincides with the projection of one of the long edges 103. The projection of the bottom edge 201 of the support column 20 coincides with the projection of the long edge 103, and the root of the support column 20 is arranged near the long edge 103 of the magnetic core base 10. The pressure borne by the support column 20 can be transmitted and released to the edge of the long edge 103 of the magnetic core base 10.

[0053] In some embodiments, please refer to the following: Figure 5The support column 20 has arc-shaped grooves 20a on both sides near the adjacent cavity 10a. After the winding is completed, the corners of the coil will expand and bulge outward. The arc-shaped grooves 20a on both sides of the support column 20 avoid the edges of the winding coil by using the arc-shaped concave contour, reducing the contact between the winding coil and the corners of the support column 20, and reducing the possibility of the enameled wire on the winding coil being scratched.

[0054] In some embodiments, the outer periphery of the support post 20 is provided with rounded corners, that is, the outer periphery of the support post 20 is rounded. This configuration can reduce the possibility of sharp edges of the support post 20 scratching the insulation layer of the winding enameled wire during the assembly and winding process, thereby protecting the winding insulation layer.

[0055] In this embodiment, a magnetic core base 10, two side posts 40, a central post 30, and a support post 20 are provided. The magnetic core base 10 is a rectangular plate, including a first surface 101 along its height direction. The two side posts 40 extend from the first surface 101 of the magnetic core base 10 in a direction away from the magnetic core base 10, and are spaced apart at both ends of the magnetic core base 10 along its length direction. The central post 30 is an oblong cylinder, extending from the first surface 101 of the magnetic core base 10 in a direction away from the magnetic core base 10, with its length direction being the same as the length direction of the magnetic core base 10. The central post 30 is positioned between the two side posts 40 along the length direction of the magnetic core base 10, and is spaced apart from both side posts 40. The support post 20 extends from the first surface 101 of the magnetic core base 10 in a direction away from the magnetic core base 10, and is spaced apart along the length direction of the magnetic core base 10. The support column 20 is positioned between two side columns 40, with the support column 20 spaced apart from the two side columns 40 and spaced apart from the middle column 30. The extension height of the two side columns 40 is the same as the extension height of the support column 20, and the extension height of the middle column 30 is not greater than the extension height of the two side columns 40 and the extension height of the support column 20. In the transformer core 1000 of this embodiment, the extension height of the side columns 40 and the extension height of the support column 20 are the same. When the two transformer cores 1000 are assembled together, the side columns 40 of the two transformer cores 1000 can be brought into close contact, thereby reducing the air gap between the two transformer cores 1000 and reducing core loss. In addition, the support columns 20 of the two transformer cores 1000 can also be brought into close contact, allowing for rapid heat conduction between the two transformer cores 1000 and improving heat dissipation efficiency. In addition, the magnetic core base 10 is set as a rectangular plate and the central column 30 is set as an oblong column, which can improve the strength of the transformer core 1000 without increasing the overall volume. Furthermore, the support column 20 is also set to further improve the strength of the transformer core 1000 and prevent the magnetic core base 10 from cracking under high temperature conditions.

[0056] This application also provides an embodiment of a transformer core assembly, which includes two transformer cores 1000 as described above. Each side post 40 of each transformer core 1000 abuts against a side post 40 of the other transformer core 1000. The central post 30 of each transformer core 1000 abuts against the central post 30 of the other transformer core 1000. The support post 20 of each transformer core 1000 abuts against the support post 20 of the other transformer core 1000. The function and structure of the transformer core 1000 can be found in the above embodiments, and will not be repeated here.

[0057] This application also provides an embodiment of a transformer, which includes windings and a transformer core 1000 as described above, or a transformer core assembly as described above. The windings are disposed on a central column. The function and structure of the core assembly can be found in the above embodiments, and will not be described in detail here.

[0058] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A transformer core, characterized in that, include: A magnetic core base, wherein the magnetic core base is rectangular plate-shaped and includes a first surface disposed along its height direction; Two side posts extend from the first surface of the magnetic core base in a direction away from the magnetic core base, and are spaced apart at both ends of the magnetic core base along the length of the magnetic core base; The central column is an elongated cylindrical column that extends from the first surface of the magnetic core base in a direction away from the magnetic core base. The length direction of the central column is the same as the length direction of the magnetic core base. The central column is disposed between the two side columns along the length direction of the magnetic core base, and the central column and the two side columns are spaced apart. A support column extends from the first surface of the magnetic core base in a direction away from the magnetic core base. Along the length direction of the magnetic core base, the support column is disposed between the two side columns, with the support column spaced apart from the two side columns and spaced apart from the middle column. The extension height of the two side columns is the same as the extension height of the support column, and the extension height of the middle column is not greater than the extension height of the two side columns and the extension height of the support column.

2. The transformer core according to claim 1, characterized in that, The number of central columns is at least two, and the at least two central columns are arranged alternately. Along the length direction of the magnetic core base, the support column is arranged between two adjacent central columns.

3. The transformer core according to claim 2, characterized in that, The number of support columns is at least two, wherein two support columns are disposed between two adjacent central columns along the width direction of the magnetic core base, and the two support columns are spaced apart.

4. The transformer core according to any one of claims 1-3, characterized in that, Along the width direction of the magnetic core base, the support column is disposed on one side of the magnetic core base.

5. The transformer core according to claim 4, characterized in that, The support column is triangular in shape, and the support column includes a base side and two side sides connected in sequence. The magnetic core base includes two long sides arranged opposite each other, and the two long sides are parallel to the bottom side.

6. The transformer core according to claim 5, characterized in that, Along the height direction of the magnetic core base, the projection of the bottom edge coincides with the projection of one of the long edges.

7. The transformer core according to claim 2, characterized in that, Along the width direction of the magnetic core base, the support column extends from one side of the magnetic core base to the other side of the magnetic core base.

8. The transformer core according to any one of claims 1-3 and 7, characterized in that, Each of the side posts has a relief groove at one end facing the center post. The relief groove is arc-shaped and is used to accommodate the winding.

9. The transformer core according to any one of claims 1-3 and 7, characterized in that, Each of the side posts has a limiting groove at one end away from the central post, and the limiting groove is used for positioning with the snap-fit ​​component.

10. The transformer core according to claim 9, characterized in that, The magnetic core base is provided with a second surface opposite to the first surface. The second surface has slots at both ends along its length. Each slot is connected to a corresponding limiting slot and is used to connect with a snap-fit ​​component.

11. A transformer core assembly, characterized in that, include: The transformer core according to any one of claims 1-10, wherein there are two transformer cores, each of the side posts of each transformer core abuts against a side post of the other transformer core, the central post of each transformer core abuts against the central post of the other transformer core, and the support post of each transformer core abuts against the support post of the other transformer core.

12. A transformer, characterized in that, include: The transformer core as described in any one of claims 1-10, or the transformer core assembly as described in claim 11; The winding is disposed on the central column.

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