Transformer

Abstract

The invention provides a transformer. The transformer comprises a winding part, a magnetic core and a base, the winding part comprises a primary winding and a secondary winding which are arranged along a first direction; a secondary terminal is arranged on one side of the secondary winding in the second direction; the magnetic core comprises a winding space and a winding post for winding the primary winding and the secondary winding, the winding space comprises a first opening and a second opening which are oppositely arranged, the winding post is arranged between the first opening and the second opening, the coil end part of the primary winding is led out from the first opening, and the secondary wiring end is led out from the second opening; the base comprises a base body and an adapter; the seat body is arranged on one side, close to the secondary wiring end, of the winding part in the second direction, the seat body is provided with a through hole penetrating in the second direction, and the secondary wiring end penetrates through the through hole and extends out of one side, back on to the winding part, of the seat body; the adapter is arranged on the seat body and comprises a first adapter part and a second adapter part, the first adapter part is connected with the coil end part of the primary winding, and the second adapter part extends out of one side, opposite to the winding part, of the seat body and serves as a primary wiring end.

Description

Technical Field

[0001] The present disclosure relates to the technical field of magnetic elements, and in particular to a transformer. Background Art

[0002] Digitalization and automation will be further integrated. With the introduction of industrial robots and automation equipment, factories can automate the production process, thereby improving production efficiency and reducing costs. Therefore, automation design for products is becoming more and more important.

[0003] With the widespread development of power electronic power conversion technology in various application fields, the high quality and low cost of power supply products have become particularly important. DCDC power supply products are generally used for energy conversion between high voltage DC and low voltage DC. As an important component in power supply products, the transformer draws power from the high voltage side (primary). Because of its small current, the primary winding usually adopts a wound coil, and the secondary current of the transformer is very large, so the secondary winding will adopt a copper bar winding. In addition, in order to take into account the influence of high current and high frequency current, the primary and secondary of the transformer will use a combination of multiple coils and copper bars in an interlaced arrangement to reduce winding losses.

[0004] The transformer is generally composed of a pair of magnetic cores (which can be EQ magnetic cores), a base, multiple secondary copper bars and several primary coils. Since the primary coil will lead to multiple wire ends and surround the secondary copper bar, the wire management usually needs to be handled manually, resulting in a complex process flow, quality risks, and difficulty in automation. Summary of the invention

[0005] A main purpose of the present disclosure is to overcome at least one of the above-mentioned defects of the prior art and provide a transformer suitable for automated production without the need for manual wiring.

[0006] To achieve the above objectives, the present disclosure adopts the following technical solutions:

[0007] According to one aspect of the present disclosure, a transformer is provided, wherein: the transformer comprises a winding portion, a magnetic core and a base; the winding portion comprises a primary winding and a secondary winding arranged along a first direction, wherein the primary winding is a coil, the secondary winding is a metal sheet, and a secondary terminal is provided on one side of the secondary winding in a second direction, and the second direction is perpendicular to the first direction; the magnetic core comprises a winding space and a winding post, wherein the axial direction of the winding post is parallel to the first direction, the winding space comprises a first opening and a second opening arranged opposite to each other along the second direction, the winding post is arranged between the first opening and the second opening, and the primary winding and the secondary winding are wound On the winding pole, the coil end of the primary winding is led out from the first opening, and the secondary terminal is led out from the second opening; the base includes a seat body and a transition piece, wherein the seat body is arranged on the side of the winding part close to the secondary terminal in the second direction, and the seat body is provided with a through hole penetrating along the second direction, and the secondary terminal passes through the through hole and extends out of the side of the seat body facing away from the winding part; the transition piece is arranged on the seat body and includes a first transition part and a second transition part, the first transition part is connected to the coil end of the primary winding, and the second transition part extends out of the side of the seat body facing away from the winding part and serves as the primary terminal.

[0008] According to one of the embodiments of the present disclosure, the base includes two transition pieces, and the two coil ends of the primary winding are respectively connected to the first transition parts of the two transition pieces.

[0009] According to one embodiment of the present disclosure, the two coil ends of the primary winding are respectively led out from opposite sides of the winding portion, and the two first transition portions are respectively located on the same side of the winding portion as the two coil ends.

[0010] According to one embodiment of the present disclosure, the two coil ends are led out from the primary winding on opposite sides in a third direction, the third direction is perpendicular to the first direction and perpendicular to the second direction, the two coil end portions are partially bent and extend along the second direction to the two first transition portions; wherein the two first transition portions are respectively located on opposite sides of the seat body in the third direction.

[0011] According to one of the embodiments of the present disclosure, the second transition portions of the two transition members are located on the same side of the winding portion.

[0012] According to one embodiment of the present disclosure, the winding portion includes one or more primary windings and a plurality of secondary windings arranged one by one along the first direction, or the winding portion includes one or more secondary windings and a plurality of primary windings arranged one by one along the first direction, wherein each one of the coil ends of the primary windings is connected to the first transfer portion of one of the transfer components, and each other one of the coil ends of the primary windings is connected to the first transfer portion of another of the transfer components.

[0013] According to one embodiment of the present disclosure, the seat body and the adapter are integrally injection molded or cold-pressed assembled, and the adapter is partially buried in the seat body.

[0014] According to one embodiment of the present disclosure, the adapter includes an adapter body, two ends of which are respectively connected to the first adapter part and the second adapter part; the adapter body is buried in the base body, and the first adapter part and the second adapter part are respectively exposed from the base body.

[0015] According to one embodiment of the present disclosure, the secondary winding includes two secondary terminals, which are arranged at intervals along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction; wherein, for one secondary winding, the base body is provided with two through holes, which are arranged at intervals along the third direction, and the two secondary terminals of the secondary winding pass through the two through holes respectively.

[0016] According to one embodiment of the present disclosure, the winding portion includes at least two secondary windings, and the primary winding is arranged between two adjacent secondary windings; wherein, the base body is provided with at least two groups of through holes, at least two groups of through holes are arranged at intervals along the first direction, and the secondary terminals of at least two secondary windings respectively pass through at least two groups of through holes.

[0017] According to one embodiment of the present disclosure, the seat body includes an inner surface facing the winding part and perpendicular to the second direction, and the inner surface is provided with a snap-fit ​​structure, and the snap-fit ​​structure is engaged with a part of the secondary winding where the secondary terminal is provided on one side in the second direction.

[0018] According to one embodiment of the present disclosure, the locking structure includes a locking slot, and the locking slot and the through hole are arranged at intervals along a third direction, the third direction is perpendicular to the first direction and perpendicular to the second direction, and one side of the secondary winding in the second direction includes a locking portion adjacent to the secondary terminal, and the locking slot is engaged with the locking portion of the secondary terminal.

[0019] According to one embodiment of the present disclosure, the seat body includes an inner surface facing the winding part and perpendicular to the second direction, and the hole wall of the through hole is inclined or curved, so that the opening size of the through hole gradually decreases from the inner surface side to the outer surface side of the seat body.

[0020] According to one embodiment of the present disclosure, the seat body includes an inner surface facing the winding portion and perpendicular to the second direction, the inner surface is provided with a sink groove, and the through hole is provided at the bottom of the sink groove.

[0021] According to one embodiment of the present disclosure, the winding portion includes at least one primary winding and at least two secondary windings, the primary winding and the secondary windings are alternately arranged along the first direction, and one primary winding is provided between two adjacent secondary windings.

[0022] According to one embodiment of the present disclosure, the magnetic core includes a first magnetic core and a second magnetic core, the first magnetic core includes a first winding post, the second magnetic core includes a second winding post, and the first winding post and the second winding post are combined to form the winding post.

[0023] According to one embodiment of the present disclosure, the seat body includes an end plate and a side plate, the end plate is arranged on one side of the second opening, the side plate is connected to the edge of the end plate and is located on the side of the magnetic core parallel to the second direction.

[0024] According to one embodiment of the present disclosure, the side plate is provided with a notch, and the magnetic core portion is exposed in the notch.

[0025] It can be seen from the above technical solutions that the advantages and positive effects of the transformer proposed in the present disclosure are:

[0026] The transformer proposed in the present disclosure includes a winding part, a magnetic core and a base; the winding part includes a primary winding and a secondary winding arranged along a first direction, wherein the primary winding is a coil and the secondary winding is a metal sheet; a secondary terminal is arranged on one side of the secondary winding in a second direction; the coil end of the primary winding and the secondary terminal are led out from different sides of the winding part; the magnetic core includes a winding space and a winding post, wherein the axial direction of the winding post is parallel to the first direction, the winding space includes a first opening and a second opening arranged opposite to each other in the second direction, and the winding post is arranged between the first opening and the second opening, The primary winding and the secondary winding are wound on the winding column, the coil end of the primary winding is led out from the first opening, and the secondary terminal is led out from the second opening; the base includes a base body and an adapter; the base body is arranged on one side of the winding part in the second direction, the base body is provided with a through hole penetrating along the second direction, the secondary terminal passes through the through hole and extends out of the side of the base body facing away from the winding part; the adapter is arranged on the base body and includes a first adapter part and a second adapter part, the first adapter part is connected to the coil end of the primary winding, and the second adapter part extends out of the side of the base body facing away from the winding part and serves as the primary terminal. Through the above design, the present invention leads the coil end of the primary winding and the secondary terminal of the secondary winding from different sides respectively, more specifically, the coil end of the primary winding is led out from the first opening, the secondary terminal is led out from the second opening, and they are respectively connected to the adapter of the base, no manual wiring is required, and problems such as complex process and poor quality caused by manual wiring are avoided, which can meet the process requirements of automated production, and is conducive to saving labor costs, improving quality and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various objects, features and advantages of the present disclosure will become more apparent by considering the following detailed description of preferred embodiments of the present disclosure in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present disclosure and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always refer to the same or similar parts. Among them:

[0028] Figure 1 is a schematic diagram of a three-dimensional structure of a transformer according to an exemplary embodiment;

[0029] Figure 2 yes Figure 1 A three-dimensional exploded schematic diagram of a transformer is shown;

[0030] Figure 3 yes Figure 1 A three-dimensional exploded schematic diagram of the winding portion is shown;

[0031] Figure 4 and Figure 5 They are Figure 1 The three-dimensional structure schematic diagram of the base at two different viewing angles is shown;

[0032] Figure 6 yes Figure 4 A schematic diagram of the three-dimensional structure of the seat body is shown;

[0033] Figure 7 yes Figure 4 A schematic diagram of the three-dimensional structure of the first adapter is shown;

[0034] Figure 8 yes Figure 4 A schematic diagram of the three-dimensional structure of the second adapter is shown.

[0035] The following are the descriptions of the reference numerals:

[0036] 100. Winding part;

[0037] 110. Primary winding;

[0038] 111. Coil end;

[0039] 120. Secondary winding;

[0040] 121. Secondary terminal;

[0041] 122. Clamping part;

[0042] 200. Magnetic core;

[0043] 210. First opening;

[0044] 220. Winding column;

[0045] 230. Second opening;

[0046] 300. Base;

[0047] 310.Base;

[0048] 311.Through hole;

[0049] 312. Inner surface;

[0050] 313. Card slot;

[0051] 314. Sink;

[0052] 315. End plate;

[0053] 316. Side panels;

[0054] 3161. Gap;

[0055] 3201. First adapter;

[0056] 3202. Second adapter;

[0057] 321. The first transfer unit;

[0058] 322. The second transfer part;

[0059] 323. Transfer body;

[0060] X. First direction;

[0061] Y. Second direction;

[0062] Z. Third direction. DETAILED DESCRIPTION

[0063] Typical embodiments that embody the features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure can include various changes in different embodiments without departing from the scope of the present disclosure, and the descriptions and drawings therein are essentially for illustrative purposes rather than for limiting the present disclosure.

[0064] In the following description of different exemplary embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part of the present disclosure and in which different exemplary structures, systems and steps that can implement multiple aspects of the present disclosure are shown by way of example. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps can be used, and structural and functional modifications can be made without departing from the scope of the present disclosure. Moreover, although the terms "above", "between", "within", etc. may be used in this specification to describe different exemplary features and elements of the present disclosure, these terms are used herein only for convenience, such as according to the direction of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present disclosure.

[0065] See also Figure 1 , which representatively shows a three-dimensional structural schematic diagram of the transformer proposed in the present disclosure. In this exemplary embodiment, the transformer proposed in the present disclosure is described by taking the application to a DCDC transformer as an example. It is easy for those skilled in the art to understand that in order to apply the relevant design of the present disclosure to other types of transformers, various modifications, additions, substitutions, deletions or other changes are made to the specific embodiments described below, and these changes are still within the scope of the principle of the transformer proposed in the present disclosure.

[0066] like Figure 1 As shown, in one embodiment of the present disclosure, the transformer provided by the present disclosure includes a winding portion 100, a magnetic core 200 and a base 300. Figures 2 to 8 , Figure 2 A three-dimensional exploded schematic diagram of a transformer is representatively shown in FIG. Figure 3 A three-dimensional exploded schematic diagram of the winding portion 100 is representatively shown in FIG. Figure 4 and Figure 5 Schematic diagrams of the three-dimensional structure of the base 300 at two different viewing angles are representatively shown; Figure 6 A three-dimensional structural schematic diagram of the seat body 310 is representatively shown in FIG. Figure 7 A three-dimensional structural schematic diagram of the first adapter 3201 is representatively shown in FIG. Figure 8 A three-dimensional structural diagram of the second adapter 3202 is representatively shown in FIG. The structure, connection mode and functional relationship of each main component of the transformer proposed in the present disclosure will be described in detail below in conjunction with the above drawings.

[0067] like Figures 1 to 5As shown, in one embodiment of the present disclosure, the winding part 100 includes a primary winding 110 and a secondary winding 120 arranged along a first direction X. The primary winding 110 is a coil, for example, a pancake coil, and the primary winding 110 includes two coil ends 111. A secondary terminal 121 is provided on one side of the secondary winding 120 in a second direction Y, and the second direction Y is perpendicular to the first direction X. The secondary winding 120 is made of a metal sheet, for example, a copper sheet. The coil end 111 of the primary winding 110 and the secondary terminal 121 of the secondary winding 120 are respectively led out from different sides of the winding part 100. The magnetic core 200 includes a winding space, a winding post 220, a first magnetic core and a second magnetic core. The first magnetic core includes a first winding post, the second magnetic core includes a second winding post, the first winding post and the second winding post are combined to form the winding post 220 of the magnetic core 200, the axial direction of the winding post 220 is parallel to the first direction X, the winding space includes a first opening 210 and a second opening 220 arranged opposite to each other along the second direction Y, the winding post 220 is arranged between the first opening 210 and the second opening 220, the primary winding 110 and the secondary winding 120 are wound on the winding post 220, the coil end 111 of the primary winding 110 is led out from the first opening 210, and the secondary terminal 121 is led out from the second opening 220. On this basis, the base 300 includes a base body 310 and a transition piece. The base 310 is arranged on a side of the winding part 100 close to the secondary terminal 121 in the second direction Y. The base 310 is provided with a through hole 311 penetrating along the second direction Y. The secondary terminal 121 passes through the through hole 311 and extends out of the side of the base 310 facing away from the winding part 100. The adapter is arranged on the base 310 and includes a first adapter part 321 and a second adapter part 322. The first adapter part 321 is connected to the coil end 111 of the primary winding 110. The second adapter part 322 extends out of the side of the base 310 facing away from the winding part 100. The second adapter part 322 can serve as a primary terminal. Accordingly, the primary terminal and the secondary terminal 121 of the transformer are both led out from the base 300 and are respectively connected to an external circuit board (e.g., a PCB circuit board). Through the above design, the present invention leads out the coil end 111 of the primary winding 110 and the secondary terminal 121 of the secondary winding 120 from different sides respectively. More specifically, the coil end 111 of the primary winding 110 is led out from the first opening 210, and the secondary terminal 121 is led out from the second opening 220, and are respectively connected to the adapter of the base 300. There is no need for manual wire management, which avoids problems such as complex process and poor quality caused by manual wire management. It can meet the process requirements of automated production, which is conducive to saving labor costs and improving quality and efficiency.

[0068] In one embodiment of the present disclosure, the primary winding 110 may be a skeleton winding, a prefabricated hollow primary winding, a coil winding, etc. The wire type of the primary winding 110 may be a single core wire, a Litz wire, a film-wrapped wire, a three-layer insulated wire, etc., and its material may be copper, aluminum, etc.

[0069] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, in one embodiment of the present disclosure, the base 300 may include two adapters (e.g., the first adapter 3201 and the second adapter 3202 shown in the accompanying drawings). Accordingly, the two coil ends 111 of the primary winding 110 may be connected to the first adapter portions 321 of the two adapters, respectively. Through the above design, the present disclosure can facilitate the connection between the two coil ends 111 and the adapter, reducing the structural complexity and layout difficulty of the adapter. In some embodiments, the base 300 may also include only one adapter, and the two coil ends 111 of each primary winding 110 may be connected to the adapter, respectively, without being limited to this embodiment.

[0070] like Figure 1 As shown, based on the design that the base 300 includes two adapters, in one embodiment of the present disclosure, the two coil ends 111 of each primary winding 110 can be led out from opposite sides of the winding part 100, and the first adapter parts 321 of the two adapters are respectively located on the same side of the winding part 100 as the two coil ends 111. Through the above design, the present disclosure can extend the distance between the two coil ends 111, that is, extend the distance between the two first adapter parts 321, which is convenient for the arrangement of the coil ends 111 and the two adapters. In some embodiments, the two coil ends 111 of each primary winding 110 can also be led out from adjacent two sides of the winding part 100, or one of the two coil ends 111 can be led out from the side facing away from the base 300, and the other can be led out from the side parallel to the second direction Y, which is not limited to this embodiment.

[0071] like Figure 1As shown, based on the design that the two coil ends 111 are respectively led out from the opposite sides of the winding part 100, in one embodiment of the present disclosure, the two coil ends 111 of each primary winding 110 can be led out from the opposite sides of the primary winding 110 in the third direction Z, the third direction Z is perpendicular to the first direction X and perpendicular to the second direction Y, and the two coil ends 111 are partially bent and extend along the second direction Y to the opposite sides of the seat body 310 in the third direction Z. On this basis, the first transfer parts 321 of the two transfer parts can be respectively located on the opposite sides of the seat body 310 in the third direction Z, that is, the two coil ends 111 extend to the two first transfer parts 321. Through the above design, it can be known from the structural characteristics of the winding part 100 that its width along the third direction Z is greater than its width along the second direction Y. Accordingly, the two coil ends 111 are partially extended to the opposite sides in the second direction Y, which can further extend the distance between the two coil ends 111. In addition, the above bending of the coil ends 111 can be achieved by equipment such as mechanical clamps, which is conducive to the realization of automated production. Specifically, the primary winding 110 can be connected to a flying wire (i.e., a lead-out coil end 111) in parallel from one side away from the base 300 in the second direction Y, and the flying wire can be fixed by a mechanical clamp. The mechanical clamp can bend the flying wire to extend along the second direction Y, and the flying wires on both sides are respectively located on the opposite sides of the primary winding 110 in the third direction Z. Then, automatic welding equipment can be used to weld the two coil ends 111 to the two first adapter parts 321 respectively. The welding equipment can adopt an automated welding process, which can be specifically resistance welding, spot welding, hot pressure welding, etc.

[0072] like Figure 1 , Figure 2 and Figure 6 As shown, in one embodiment of the present disclosure, the second transfer parts 322 of the two transfer parts can be located on the same side of the winding part 100. Through the above design, the present disclosure can reduce the process difficulty of connecting the second transfer part 322 as a primary terminal to the circuit board. In some embodiments, the second transfer parts 322 of the two transfer parts can also be located on different sides of the winding part 100, which is not limited to this embodiment.

[0073] like Figures 1 to 3As shown, in one embodiment of the present disclosure, the winding part 100 may include one or more primary windings 110 and a plurality of secondary windings 120 arranged one by one in a staggered manner along the first direction X, or one or more secondary windings 120 and a plurality of primary windings 110 arranged one by one in a staggered manner along the first direction X. On this basis, each coil end 111 of each primary winding 110 is connected to the first adapter 321 of an adapter, and the other coil end 111 of each primary winding 110 is connected to the first adapter 321 of another adapter. Through the above structural design, the present disclosure can use the same adapter to realize the lead-out of each coil end 111 of one or more primary windings 110, which has a better wiring effect, is more beautiful, and is conducive to simplifying the structural complexity of components.

[0074] like Figure 3 As shown, in one embodiment of the present disclosure, the winding portion 100 may include three primary windings 110 and four secondary windings 120, and the primary windings 110 and the secondary windings 120 are alternately arranged along the first direction X, that is, one primary winding 110 is provided between two adjacent secondary windings 120. In other embodiments, when the primary windings 110 and the secondary windings 120 are alternately arranged, the primary windings 110 and the secondary windings 120 may also be selected in other numbers, and the secondary winding 120 is one more than the primary winding 110, that is, the winding portion 100 includes at least one primary winding 110 and two secondary windings 120, at least forming a structure of "primary winding 110-secondary winding 120-primary winding 110". Of course, in some embodiments, based on the design of alternating arrangement of the primary winding 110 and the secondary winding 120, the number of secondary windings 120 and the primary winding 110 may be equal, or the number of secondary windings 120 may be one less than the primary winding 110, at least forming a structure of "secondary winding 120-primary winding 110-secondary winding 120", which is not limited to the present embodiment.

[0075] like Figure 4 and Figure 5 As shown, in one embodiment of the present disclosure, the base 310 and the adapter can be integrally injection molded or cold-pressed assembled, and the adapter is partially embedded in the base 310. Through the above design, the present disclosure can improve the stability of the adapter when it is set in the base 310, and ensure that the adapter's transfer function is effective. At the same time, partially embedding the adapter in the base 310 made of plastic material can further improve the insulation performance.

[0076] like Figures 4 to 8As shown, based on the design that the adapter is partially embedded in the base body 310, in one embodiment of the present disclosure, the adapter may include an adapter body 323, and the two ends of the adapter body 323 are respectively connected to the first adapter part 321 and the second adapter part 322. On this basis, the adapter body 323 can be embedded in the base body 310, and the first adapter part 321 and the second adapter part 322 are respectively exposed from the base body 310.

[0077] like Figure 7 As shown, in one embodiment of the present disclosure, the first adapter portion 321 and the second adapter portion 322 of the first adapter 3201 are both located on the same side of the seat body 310 in the third direction Z, and the portion of the first adapter 3201 buried in the seat body 310 (i.e., the adapter body 323) can be located only at one end of the seat body 310 in the third direction Z. Furthermore, the first adapter portion 321 and the second adapter portion 322 of the second adapter 3202 are respectively located on opposite sides of the seat body 310 in the third direction Z, and the portion of the second adapter 3202 buried in the seat body 310 (i.e., the adapter body 323) needs to extend from one end to the other end of the seat body 310 along the third direction. On this basis, since the first adapter portion 321 of the adapter needs to be connected to the coil ends 111 of the plurality of primary windings 110, the length dimension of the first adapter portion 321 is larger than that of the second adapter portion 322. In this embodiment, since the first adapter portion 321 of the first adapter 3201 and the second adapter portion 322 of the second adapter 3202 need to be arranged on one side of the seat body 310 in the third direction at the same time, based on the above-mentioned size difference, the first adapter portion 321 of the first adapter 3201 can be arranged between the two second adapter portions 322. Accordingly, the first adapter 3201 is generally in a linear structure, and the second adapter 3202 is generally in an "L"-shaped bending structure.

[0078] like Figures 1 to 3 As shown, in one embodiment of the present disclosure, the secondary winding 120 includes two secondary terminals 121, and the two secondary terminals 121 are arranged at intervals along the third direction Z. For example, the secondary winding 120 can be roughly in a "C" shape. On this basis, for one secondary winding 120, the seat body 310 can be provided with two through holes 311, and the two through holes 311 are arranged at intervals along the third direction Z. The two secondary terminals 121 of the secondary winding 120 pass through the two through holes 311 respectively. Through the above design, the present disclosure can use the two through holes 311 of the seat body 310 to allow the two secondary terminals 121 of the secondary winding 120 to pass through, so as to avoid the two secondary terminals 121 of the same secondary winding 120 from affecting each other when passing through the same through hole 311 at the same time, and at the same time avoid the through hole 311 being too large to affect the structural strength of the seat body 310.

[0079] like Figures 1 to 3As shown, in one embodiment of the present disclosure, the winding part 100 includes at least two secondary windings 120, and a primary winding 110 is arranged between two adjacent secondary windings 120. On this basis, the base 310 can be provided with at least two groups of through holes 311, and the at least two groups of through holes 311 are arranged at intervals along the first direction X, and the secondary terminals 121 of the at least two secondary windings 120 pass through the at least two groups of through holes 311 respectively. Through the above design, the present disclosure can use the at least two groups of through holes 311 of the base 310 to allow the two secondary terminals 121 of the at least two secondary windings 120 to pass through, so as to avoid the secondary terminals 121 of the two secondary windings 120 from affecting each other when passing through a group of through holes 311 at the same time, and at the same time avoid the through holes 311 being too large to affect the structural strength of the base 310.

[0080] Specifically, taking the winding part 100 shown in the drawings as an example, which includes four secondary windings 120, that is, there are eight secondary terminals 121 in total, the seat body 310 can be provided with eight through holes 311 for the eight secondary terminals 121 to pass through respectively. Moreover, corresponding to the arrangement and structure of the secondary winding 120, the eight through holes 311 are divided into four groups arranged at intervals along the first direction X (corresponding to the four secondary windings 120 respectively), and each group includes two through holes 311 arranged at intervals along the third direction Z (corresponding to the two secondary terminals 121 of one secondary winding 120 respectively). In other embodiments, the present disclosure may also adopt other matching modes of through holes 311 and secondary terminals 121. For example, at least two secondary terminals 121 can pass through a through hole 311, or the secondary terminals 121 passing through the same through hole 311 may belong to the same secondary winding 120, or may belong to different secondary windings 120, which are not limited to the present embodiment.

[0081] like Figure 5 As shown, in one embodiment of the present disclosure, the base 310 includes an inner surface 312 facing the winding part 100 and perpendicular to the second direction Y, and the inner surface 312 can be provided with a snap-fit ​​structure, and the snap-fit ​​structure is partially snap-fitted with the secondary terminal 121 provided on one side of the secondary winding 120 in the second direction Y, thereby completing the assembly of the entire transformer and realizing an automated plug-in process. Through the above design, the present disclosure can utilize the snap-fit ​​structure to realize the snap-fit ​​positioning of the secondary winding 120. In contrast, in the existing design, when assembling the secondary copper bar with the base 300, since there is no limiting snap-fit ​​structure, it is necessary to fix the copper sheet with an ear clip and then bake the glue, which is cumbersome and prone to assembly deviation, resulting in rework and increased manpower and equipment-related costs. Accordingly, the present disclosure can simplify the process and save manpower and equipment-related costs.

[0082] like Figure 5As shown, based on the design that the inner surface 312 of the seat body 310 is provided with a snap-fit ​​structure, in one embodiment of the present disclosure, the snap-fit ​​structure may include a snap-fit ​​groove 313, and the snap-fit ​​groove 313 and the through hole 311 are arranged at intervals along the third direction Z. The secondary winding 120 includes a snap-fit ​​portion 122 adjacent to the secondary terminal 121 on one side in the second direction Y. The snap-fit ​​groove 313 is snap-fitted with the snap-fit ​​portion 122 of the secondary terminal 121, thereby realizing snap-fitting with the portion of the secondary winding 120 where the secondary terminal 121 is provided. Specifically, the snap-fit ​​groove 313 may be composed of two snap-fitting protrusions arranged at intervals along the second direction Y, and the space between the two snap-fitting protrusions forms the snap-fit ​​groove 313, and the surfaces facing the two snap-fitting protrusions may be further provided with a tenon to strengthen the positioning of the secondary winding 120, and the snap-fit ​​portion 122 of the secondary terminal 121 is a sheet-like structure corresponding to the snap-fit ​​groove 313. In some embodiments, the snap-fit ​​structure may also adopt other designs. For example, the snap-fitting groove 313 may also be recessed in the inner surface 312 of the seat body 310. Accordingly, a snap-fitting protrusion may be provided on the edge of the secondary winding 120 facing the seat body 310. Then, the secondary winding 120 may be snap-fitted to the snap-fitting groove 313 via the snap-fitting protrusion. This is not limited to the present embodiment.

[0083] like Figure 5 As shown, in one embodiment of the present disclosure, the hole wall of the through hole 311 can be in the shape of an inclined surface or an arc surface, so that the opening size of the through hole 311 gradually decreases from the inner surface 312 side to the outer surface side of the seat body 310, thereby being able to use the special design of the hole wall to provide a guiding function when the secondary terminal 121 of the secondary winding 120 passes through the through hole 311.

[0084] like Figure 5As shown, in one embodiment of the present disclosure, the inner surface 312 of the base 310 may be provided with a recessed groove 314, and the through hole 311 may be provided at the bottom of the recessed groove 314, that is, one end of the through hole 311 opens at the bottom of the recessed groove 314, and the other end opens at the outer surface of the base 310 facing away from the winding part 100. Among them, except for part of the coil end 111, the orthographic projection figures of the winding part 100 on the plane where the inner surface 312 is located are all located within the range of the recessed groove 314. Through the above design, the present disclosure arranges the recessed groove 314 basically corresponding to the area of ​​the winding part 100, that is, the area of ​​the inner surface 312 where the recessed groove 314 is not provided corresponds to the magnetic core 200, and the recessed groove 314 can use its own groove wall to provide a guiding effect when the base 300 and the winding part 100 are assembled. For example, when the base 300 and the winding portion 100 are assembled along the second direction Y, the groove wall of the recessed groove 314 can be used to guide the secondary terminal 121 so that it can be more accurately and smoothly inserted into the through hole 311. Accordingly, the groove wall can further adopt an inclined surface or an arc surface shape. In some embodiments, the inner surface 312 of the base body 310 may not be provided with the recessed groove 314, and the opening of the through hole 311 facing the winding portion 100 is directly opened on the inner surface 312 of the base body 310, which is not limited to this embodiment.

[0085] like Figure 1 , Figures 4 to 6 As shown, based on the design that the magnetic core 200 of the transformer includes the first magnetic core and the second magnetic core, in one embodiment of the present disclosure, the seat body 310 may include an end plate 315 and a side plate 316, the end plate 315 is arranged on one side of the second opening 230, the above-mentioned through hole 311 can be arranged on the end plate 315, and the adapter can be partially buried in the end plate 315. The side plate 316 is connected to the edge of the end plate 315, and the side plate 316 is located on the side of the magnetic core 200 parallel to the second direction Y. Through the above design, the present disclosure can further optimize the structure of the seat body 310, use the side plate 316 to improve the assembly effect of the first magnetic core and the second magnetic core, and play a role in constraining the positioning and protecting the magnetic core 200 and the winding part 100. At the same time, the present disclosure can use the side plate 316 as a creepage barrier to ensure that there is a sufficient creepage distance between the primary winding 110 and the magnetic core 200.

[0086] like Figure 1 , Figures 4 to 6 As shown, based on the design that the seat body 310 includes an end plate 315 and a side plate 316, in one embodiment of the present disclosure, the side plate 316 may be provided with a notch 3161, and the magnetic core 200 is partially exposed in the notch 3161. Through the above design, the present disclosure can utilize the notch 3161 to ensure the smooth flow of the glue injection channel.

[0087] It should be noted that the transformers shown in the drawings and described in this specification are only a few examples of many types of transformers that can adopt the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details or components of the transformers shown in the drawings or described in this specification.

[0088] In summary, the transformer proposed in the present disclosure includes a winding part 100, a magnetic core 200 and a base 300; the winding part 100 includes a primary winding 110 and a secondary winding 120 arranged along a first direction X, wherein the primary winding 110 is a coil and the secondary winding 120 is a metal sheet; a secondary terminal 121 is provided on one side of the secondary winding 120 in a second direction Y; the coil end 111 of the primary winding 110 and the secondary terminal 121 are led out from different sides of the winding part 100; the magnetic core 200 includes a winding space and a winding post 220, wherein the axial direction of the winding post 220 is parallel to the first direction X, the winding space includes a first opening 210 and a second opening 230 arranged opposite to each other in the second direction Y, the winding post 220 is arranged between the first opening 210 and the second opening 230, the primary winding 110 and the secondary winding 120 are arranged between the first opening 210 and the second opening 230, The primary winding 120 is wound on the winding pole 220, the coil end 111 of the primary winding 110 is led out from the first opening 210, and the secondary terminal 121 is led out from the second opening 230; the base 300 includes a base body 310 and a transition piece; the base body 310 is arranged on the side of the winding part 100 close to the secondary terminal 121 in the second direction Y, and the base body 310 is provided with a through hole 311 passing through along the second direction Y, and the secondary terminal 121 passes through the through hole 311 and extends out of the side of the base body 310 facing away from the winding part 100; the transition piece is arranged on the base body 310 and includes a first transition part 321 and a second transition part 322, the first transition part 321 is connected to the coil end 111 of the primary winding 110, and the second transition part 322 extends out of the side of the base body 310 facing away from the winding part 100 and serves as the primary terminal.

[0089] Through the above design, the present invention leads out the coil end 111 of the primary winding 110 and the secondary terminal 121 of the secondary winding 120 from different sides respectively. More specifically, the coil end 111 of the primary winding 110 is led out from the first opening 210, and the secondary terminal 121 is led out from the second opening 220, and are respectively connected to the adapter of the base 300. There is no need for manual wire management, which avoids problems such as complex process and poor quality caused by manual wire management. It can meet the process requirements of automated production, which is conducive to saving labor costs and improving quality and efficiency.

[0090] The exemplary embodiments of the transformer proposed by the present disclosure are described and / or illustrated in detail above. However, the embodiments of the present disclosure are not limited to the specific embodiments described herein. On the contrary, the components and / or steps of each embodiment can be used independently and separately from other components and / or steps described herein. Each component and / or each step of an embodiment can also be used in combination with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated herein, the terms "one", "one" and "above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising", "including" and "having" are used to indicate the meaning of open inclusion and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc. In addition, the terms "first" and "second" in the claims and the specification are used only as marks and are not numerical restrictions on their objects.

[0091] Although transformers presented in the present disclosure have been described in terms of various specific embodiments, those skilled in the art will recognize that the disclosure can be practiced with modification within the spirit and scope of the claims.

Claims

1. A transformer, characterized in that: It comprises a winding part (100), a magnetic core (200) and a base (300); The winding portion (100) comprises a primary winding (110) and a secondary winding (120) arranged along a first direction (X), wherein the primary winding (110) is a coil, the secondary winding (120) is a metal sheet, and a secondary terminal (121) is provided on one side of the secondary winding (120) in a second direction (Y), and the second direction (Y) is perpendicular to the first direction (X); The magnetic core (200) comprises a winding space and a winding post (220), wherein the axial direction of the winding post (220) is parallel to the first direction (X), the winding space comprises a first opening (210) and a second opening (230) arranged opposite to each other along the second direction (Y), the winding post (220) is arranged between the first opening (210) and the second opening (230), the primary winding (110) and the secondary winding (120) are wound on the winding post (220), the coil end (111) of the primary winding (110) is led out from the first opening (210), and the secondary terminal (121) is led out from the second opening (230); The base (300) comprises a base body (310) and a transition piece, wherein the base body (310) is arranged on a side of the winding part (100) close to the secondary terminal (121) in the second direction (Y), and the base body (310) is provided with a through hole (311) penetrating along the second direction (Y), and the secondary terminal (121) passes through the through hole (311) and protrudes from a side of the base body (310) facing away from the winding part (100); the transition piece is arranged on the base body (310) and comprises a first transition piece (321) and a second transition piece (322), wherein the first transition piece (321) is connected to the coil end (111) of the primary winding (110), and the second transition piece (322) protrudes from a side of the base body (310) facing away from the winding part (100) and serves as a primary terminal.

2. The transformer according to claim 1, characterized in that: The base (300) comprises two transition pieces, and the two coil ends (111) of the primary winding (110) are respectively connected to the first transition parts (321) of the two transition pieces.

3. The transformer according to claim 2, characterized in that: The two coil ends (111) of the primary winding (110) are respectively led out from opposite sides of the winding portion (100), and the two first transition portions (321) are respectively located on the same side of the winding portion (100) as the two coil ends (111).

4. The transformer according to claim 3, characterized in that: The two coil ends (111) are led out from the primary winding (110) on opposite sides in a third direction (Z), the third direction (Z) being perpendicular to the first direction (X) and perpendicular to the second direction (Y), the two coil ends (111) are partially bent and extend along the second direction (Y) to the two first transition portions (321); wherein the two first transition portions (321) are respectively located on opposite sides of the seat body (310) in the third direction (Z).

5. The transformer according to claim 3, characterized in that: The second transition portions (322) of the two transition members are located on the same side of the winding portion (100).

6. The transformer according to claim 2, characterized in that: The winding portion (100) comprises one or more primary windings (110) and a plurality of secondary windings (120) arranged one by one in a staggered manner along the first direction (X), or one or more secondary windings (120) and a plurality of primary windings (110) arranged one by one in a staggered manner along the first direction (X), wherein each coil end (111) of each primary winding (110) is connected to the first transition portion (321) of one transition member, and each other coil end (111) of each primary winding (110) is connected to the first transition portion (321) of another transition member.

7. The transformer according to claim 1, characterized in that: The seat body (310) and the adapter are integrally formed by injection molding or cold-pressed assembly molding, and the adapter is partially embedded in the seat body (310).

8. The transformer according to claim 7, characterized in that: The adapter comprises an adapter body (323), two ends of which are respectively connected to the first adapter part (321) and the second adapter part (322); the adapter body (323) is buried in the base body (310), and the first adapter part (321) and the second adapter part (322) are respectively exposed from the base body (310).

9. The transformer according to claim 1, characterized in that: The secondary winding (120) comprises two secondary terminals (121), the two secondary terminals (121) are arranged at intervals along a third direction (Z), and the third direction (Z) is perpendicular to the first direction (X) and perpendicular to the second direction (Y); wherein, for one secondary winding (120), the base (310) is provided with two through holes (311), the two through holes (311) are arranged at intervals along the third direction (Z), and the two secondary terminals (121) of the secondary winding (120) pass through the two through holes (311) respectively.

10. The transformer according to claim 1, characterized in that: The winding portion (100) comprises at least two secondary windings (120), and the primary winding (110) is arranged between two adjacent secondary windings (120); wherein the base (310) is provided with at least two groups of through holes (311), and the at least two groups of through holes (311) are arranged at intervals along the first direction (X), and the secondary terminals (121) of at least two secondary windings (120) respectively pass through the at least two groups of through holes (311).

11. The transformer according to claim 1, characterized in that: The seat body (310) comprises an inner surface (312) facing the winding portion (100) and perpendicular to the second direction (Y), and the inner surface (312) is provided with a snap-fit ​​structure, and the snap-fit ​​structure is snap-fitted with a portion of the secondary winding (120) provided with the secondary terminal (121) on one side in the second direction (Y).

12. The transformer according to claim 11, characterized in that The snap-fit ​​structure comprises a snap-fitting groove (313), wherein the snap-fitting groove (313) and the through hole (311) are arranged at intervals along a third direction (Z), wherein the third direction (Z) is perpendicular to the first direction (X) and perpendicular to the second direction (Y), wherein one side of the secondary winding (120) in the second direction (Y) comprises a snap-fitting portion (122) adjacent to the secondary terminal (121), and the snap-fitting groove (313) is snap-fitted with the snap-fitting portion (122) of the secondary terminal (121).

13. The transformer according to claim 1, characterized in that: The seat body (310) comprises an inner surface (312) facing the winding portion (100) and perpendicular to the second direction (Y), and the hole wall of the through hole (311) is in the shape of an inclined surface or an arc surface, so that the opening size of the through hole (311) gradually decreases from one side of the inner surface (312) to one side of the outer surface of the seat body (310).

14. The transformer according to claim 1, characterized in that The seat body (310) comprises an inner surface (312) facing the winding portion (100) and perpendicular to the second direction (Y), the inner surface (312) being provided with a sink groove (314), and the through hole (311) being provided at the bottom of the sink groove (314).

15. The transformer according to any one of claims 1 to 14, characterized in that: The winding portion (100) comprises at least one primary winding (110) and at least two secondary windings (120); the primary winding (110) and the secondary windings (120) are arranged alternately along the first direction (X); and one primary winding (110) is arranged between two adjacent secondary windings (120).

16. The transformer according to any one of claims 1 to 14, characterized in that: The magnetic core (200) comprises a first magnetic core and a second magnetic core, the first magnetic core comprises a first winding post, the second magnetic core comprises a second winding post, and the first winding post and the second winding post are combined to form the winding post (220).

17. The transformer according to claim 16, characterized in that The seat body (310) comprises an end plate (315) and a side plate (316), wherein the end plate (315) is arranged on one side of the second opening (230), and the side plate (316) is connected to the edge of the end plate (315) and is located on the side of the magnetic core (200) parallel to the second direction (Y).

18. The transformer according to claim 17, characterized in that The side plate (316) is provided with a notch (3161), and a portion of the magnetic core (200) is exposed outside the notch (3161).

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