transformer

Abstract

The embodiment of the application discloses a transformer, which comprises a first magnetic core, a second magnetic core, a coil winding, a first insulating plate and a second insulating plate. In a first direction, the second magnetic core is arranged on one side of the first magnetic core, and the coil winding is arranged between the first magnetic core and the second magnetic core. In a second direction, the first insulating plate is connected to the first end of the first magnetic core and the first end of the second magnetic core respectively, one side of the first insulating plate towards the first magnetic core is provided with a first limiting boss and an abutting boss, the first limiting boss is connected to the first magnetic core and the second magnetic core respectively, and the abutting boss abuts against the coil winding. In the second direction, the second insulating plate is connected to the second end of the first magnetic core and the second end of the second magnetic core respectively, and the second insulating plate abuts against the coil winding. The first direction and the second direction are perpendicular to each other. The first limiting boss, the abutting boss and the second insulating plate are arranged to limit the magnetic core and the coil winding, thereby reducing the risk of displacement during the installation of the transformer.

Description

Technical Field

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

[0002] In the existing technology, the working principle of a transformer is that electricity generates magnetism, and magnetism generates electricity. When the primary coil is energized, it generates an alternating magnetic field. This magnetic field is conducted and concentrated through a specially made magnetic core. When this magnetic field passes through the secondary coil, it induces an alternating voltage. If the secondary circuit is closed, a current is generated.

[0003] A conventional transformer typically includes a frame, a core, a primary coil, and a secondary coil, with the primary and secondary coils wound separately on the frame. However, to reduce the size of the transformer, existing transformers eliminate the frame and directly wind the primary and secondary coils onto the center post of the core.

[0004] However, in the process of implementing this application, the applicant discovered that for frameless transformers, the magnetic core needs to be connected by an insulating base. However, the material of the insulating base is mostly epoxy fiberglass board. Due to the influence of the material, the processing shape of the insulating base is limited, which makes the magnetic core and coil windings prone to displacement during the transformer assembly process, resulting in structural instability. Utility Model Content

[0005] This application provides a transformer with a stable structure.

[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution: A transformer is provided, comprising a first magnetic core, a second magnetic core, a coil winding, a first insulating plate, and a second insulating plate. Along a first direction, the second magnetic core is disposed on one side of the first magnetic core; the coil winding is disposed between the first magnetic core and the second magnetic core. Along a second direction, the first insulating plate is respectively connected to a first end of the first magnetic core and a first end of the second magnetic core. The side of the first insulating plate facing the first magnetic core is provided with a first limiting boss and an abutting boss. The first limiting boss is respectively connected to the first magnetic core and the second magnetic core, and the abutting boss abuts against the coil winding. Along the second direction, the second insulating plate is respectively connected to a second end of the first magnetic core and abuts against the coil winding. The first direction and the second direction are perpendicular to each other.

[0007] In one or more of the above optional embodiments, the first magnetic core includes a first magnetic plate and two first magnetic arms, the two first magnetic arms being connected to the two ends of the first magnetic plate along a third direction, and the coil winding being disposed between the two first magnetic arms; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0008] In one or more of the above optional embodiments, each of the first magnetic arms includes a first limiting portion that protrudes from the first magnetic plate in a direction toward the first insulating plate and abuts against the first limiting boss.

[0009] In one or more of the above optional embodiments, the first insulating plate includes a first base plate, and the first limiting boss and the abutting boss are both connected to the side of the first base plate facing the second insulating plate; the number of the first limiting boss and the number of the first limiting part are two, the two first limiting bosses are arranged sequentially along the third direction, the two first limiting parts are spaced apart along the third direction, and the two first limiting bosses are arranged on the two first limiting parts, with each first limiting boss abutting against a corresponding first limiting part.

[0010] In one or more of the above optional embodiments, the second insulating plate includes a second base plate and a second limiting boss, the second limiting boss being disposed on the side of the second base plate facing the first insulating plate; each first magnetic arm includes a second limiting portion, the second limiting portion protruding from the first magnetic plate in the direction toward the second insulating plate, the second limiting portion abutting against the second limiting boss.

[0011] In one or more of the above optional embodiments, the first magnetic core further includes a first magnetic post, the first magnetic post being disposed on the side of the first magnetic plate facing the second magnetic core, and the coil winding being disposed on the first magnetic post.

[0012] In one or more of the above optional embodiments, the second magnetic core includes a second magnetic plate and two second magnetic arms. The two second magnetic arms are respectively connected to the two ends of the second magnetic plate along the third direction. The coil winding is disposed between the two second magnetic arms. Each second magnetic arm is respectively connected to a corresponding first magnetic arm. The first limiting boss is respectively connected to the two second magnetic arms and the two first magnetic arms.

[0013] In one or more of the above optional embodiments, the coil winding includes a first primary coil and a secondary coil, wherein the first primary coil and the secondary coil are respectively disposed between the first magnetic core and the second magnetic core.

[0014] In one or more of the above optional embodiments, the coil winding further includes a second primary coil and a third primary coil, wherein the first primary coil, the second primary coil, the secondary coil and the third primary coil are sequentially disposed between the first magnetic core and the second magnetic core.

[0015] In one or more of the above optional embodiments, the transformer further includes a third magnetic core, which is disposed between the first magnetic core and the second magnetic core along the first direction; the first primary coil is disposed between the first magnetic core and the third magnetic core, and the second primary coil, the secondary coil, and the third primary coil are sequentially disposed between the third magnetic core and the second magnetic core.

[0016] The transformer provided in this application adopts a frameless structure, uses a first insulating plate and a second insulating plate to support the magnetic core, and sets a limiting boss and an abutment boss on the insulating plate to limit the magnetic core and coil winding, thereby reducing the risk of the magnetic core and coil shifting during transformer installation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the transformer provided in the embodiments of this application; Figure 2 yes Figure 1 The exploded view of the transformer shown; Figure 3 yes Figure 1 A three-dimensional schematic diagram of the first magnetic core in the transformer shown; Figure 4 yes Figure 1 A three-dimensional schematic diagram of the first magnetic core in the transformer from another perspective; Figure 5 yes Figure 1 A three-dimensional schematic diagram of the second magnetic core in the transformer shown; Figure 6 yes Figure 1 A three-dimensional schematic diagram of the second magnetic core in the transformer from another perspective; Figure 7 yes Figure 1 The cross-sectional view of the transformer shown; Figure 8 yes Figure 1 A three-dimensional schematic diagram of the third magnetic core in the transformer shown; Figure 9 yes Figure 1 A three-dimensional schematic diagram of the first insulating plate in the transformer shown; Figure 10 yes Figure 1The diagram shows the installation of the first insulating plate and the first magnetic core in the transformer. Figure 11 yes Figure 1 The diagram shows the installation of the second magnetic core and the first insulating plate in the transformer. Figure 12 yes Figure 1 The diagram shows the installation of the coil windings and insulation plate in the transformer. Figure 13 yes Figure 1 The diagram shows the installation of the coil windings and insulation plate in the transformer. Figure 14 yes Figure 1 The diagram shows the installation of the first insulating plate and the third magnetic core in the transformer. Figure 15 yes Figure 1 A three-dimensional schematic diagram of the second insulating plate in the transformer shown; Figure 16 yes Figure 1 The diagram shows the installation of the second insulating plate and the first magnetic core in the transformer. Figure 17 yes Figure 1 The diagram shows the installation of the second insulating plate, the second magnetic core, and the third magnetic core in the transformer. Figure 18 yes Figure 1 The diagram shows the installation of the second insulating plate, the second magnetic core, and the third magnetic core in the transformer.

[0019] Figure label: 11. Magnetic core; 111. First magnetic core; 1111, First magnetic plate; 1112, First magnetic arm; 11121, First arc-shaped groove; 11122, First limiting part 11123, Second limiting part; 1113, First magnetic pillar; 1114, First opening; 1115, Second opening; 1116. First sector groove; 1117. Second sector groove; 112. Second magnetic core; 1121. The second magnetic plate; 1122, Second magnetic arm; 11221, Second arc-shaped groove; 11222, Third limiting part; 11223, Fourth limiting part; 1123. Second magnetic pillar; 1124. Third opening; 1125. Fourth opening; 1126. Third sector groove; 1127. Fourth sector groove; 113. The third magnetic core; 1131. The third magnetic plate; 1132, Third magnetic arm; 11321, Fifth limiting part; 11322, Sixth limiting part; 1133, Fifth sector groove; 1134, Sixth sector groove; 12. Coil winding; 121. First primary coil; 122. Secondary coil; 123. Second primary coil; 124. Third primary coil; 13. Insulating board; 131. First insulating board; 1311, First base plate; 1312a, First limiting boss; 13121a, First boss; 13122a, First limiting platform; 1312b, First limiting boss; 13121b, First boss; 13122b, First limiting platform; 1313, Abutting Boss; 1313a, First Abutting Boss; 1313b, Second Abutting Boss; 1314. First cable outlet; 132. Second insulating board; 1321. Second base plate; 1322a, Second limiting boss; 13221a, Second boss; 13222a, Second limiting platform; 1322b, Second limiting boss; 13221b, Second boss; 13222b, Second limiting platform; 1323, Second cable outlet. Detailed Implementation It should be noted that when an element is described as "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 "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The term "vertical" 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] Unless otherwise specified, the term "multiple" in this application refers to two or more.

[0022] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] Please see Figure 1 and Figure 2 , Figure 1 A three-dimensional schematic diagram of transformer 1 in an embodiment of this application is shown. Figure 2 An exploded view of transformer 1 is shown.

[0024] This application provides a transformer 1, including a magnetic core 11, a coil winding 12, and an insulating plate 13. The magnetic core 11 includes a first magnetic core 111 and a second magnetic core 112, with the second magnetic core 112 disposed on one side of the first magnetic core 111 along a first direction x. The coil winding 12 is disposed between the first magnetic core 111 and the second magnetic core 112. The insulating plate 13 includes a first insulating plate 131 and a second insulating plate 132. Along the second direction y, the first insulating plate 131 is connected to the first end of the first magnetic core 111 and the first end of the second magnetic core 112. The side of the first insulating plate 131 facing the first magnetic core 111 is provided with a first limiting boss 1312a, 1312b and an abutting boss 1313. The first limiting boss 1312 is connected to the first magnetic core 111 and the second magnetic core 112, and the abutting boss 1313 abuts against the coil winding 12. The second insulating plate 132 is connected to the second end of the first magnetic core 111 and the second end of the second magnetic core 112, and the second insulating plate 132 abuts against the coil winding 12.

[0025] In some embodiments, such as Figure 3 and Figure 4 As shown, the first magnetic core 111 includes a first magnetic plate 1111 and two first magnetic arms 1112. The two first magnetic arms 1112 are respectively connected to the two ends of the first magnetic plate 1111 along the third direction z. The coil winding 12 is disposed between the two first magnetic arms 1112. The first direction x, the second direction y, and the third direction z are all perpendicular to each other.

[0026] In some embodiments, each first magnetic arm 1112 includes a first arcuate groove 11121, which is adapted to the outer periphery of the coil winding 12. The two first arcuate grooves 11121 and the first magnetic plate 1111 together form a first limiting groove 1110, and a portion of the coil winding 12 is housed in the first limiting groove 1110.

[0027] In some embodiments, each first magnetic arm 1112 includes a first limiting portion 11122, which protrudes from the first magnetic plate 1111 in a direction toward the first insulating plate 131 and abuts against the first limiting boss 1312a.

[0028] In some embodiments, each first magnetic arm 1112 includes a second limiting portion 11123, which protrudes from the first magnetic plate 1111 in a direction toward the second insulating plate 132, and abuts against the second limiting boss 1322a of the second insulating plate 132.

[0029] In some embodiments, the first magnetic core 111 further includes a first magnetic post 1113, which is disposed on the side of the first magnetic plate 1111 facing the second magnetic core 112, and the coil winding 12 is disposed on the first magnetic post 1113. Specifically, the first magnetic post 1113 extends from the first magnetic plate 1111 along a first direction x toward the second magnetic core 112, and two first magnetic arms 1112 are spaced apart along a third direction z, and the two first magnetic arms 1112 are symmetrically connected to the two ends of the first magnetic plate 1111 with respect to the first magnetic post 1113, and a portion of the coil winding 12 is wound around the first magnetic post 1113.

[0030] In some embodiments, such as Figure 5 and Figure 6 As shown, the second magnetic core 112 includes a second magnetic plate 1121 and two second magnetic arms 1122. The two second magnetic arms 1122 are respectively connected to the two ends of the second magnetic plate 1121 along the third direction z. The coil winding 12 is disposed between the two second magnetic arms 1122. Each second magnetic arm 1122 is respectively connected to a corresponding first magnetic arm 1112. The first limiting bosses 1312ba and 1312b are respectively connected to the two second magnetic arms 1122 and the two first magnetic arms 1112.

[0031] In some embodiments, each second magnetic arm 1122 includes a second arcuate groove 11221, which is adapted to the outer periphery of the coil winding 12. The two second arcuate grooves 11221 and the second magnetic plate 1121 together form a second limiting groove 1120, and another part of the coil winding 12 is accommodated in the second limiting groove 1120.

[0032] In some embodiments, each second magnetic arm 1122 includes a third limiting portion 11222, which protrudes from the second magnetic plate 1121 in a direction toward the first insulating plate 131 and abuts against the first limiting boss 1312b.

[0033] In some embodiments, each second magnetic arm 1122 includes a fourth limiting portion 11223, which protrudes from the second magnetic plate 1121 in a direction toward the second insulating plate 132 and abuts against the second limiting boss 1322b of the second insulating plate 132.

[0034] In some embodiments, the second magnetic core 112 further includes a second magnetic post 1123, which is disposed on the side of the second magnetic plate 1121 facing the first magnetic core 111, and the coil winding 12 is disposed on the second magnetic post 1123. Specifically, the second magnetic post 1123 extends from the second magnetic plate 1121 toward the first magnetic core 111 along a first direction x, and two second magnetic arms 1122 are spaced apart along a third direction z, and the two second magnetic arms 1122 are symmetrically connected to both ends of the second magnetic plate 1121 with respect to the second magnetic post 1123.

[0035] In some embodiments, the first magnetic post 1113 of the first magnetic core 111 abuts against the second magnetic post 1123 of the second magnetic core 112 in the first direction x, and a first magnetic arm 1112 abuts against a second magnetic arm 1122 in the first direction x.

[0036] In some embodiments, combined with Figure 2 The coil winding 12 includes a first primary coil 121 and a secondary coil 122, which are respectively disposed between the first magnetic core 111 and the second magnetic core 112. Specifically, the first primary coil 121 is wound on the first magnetic post 1113, and the secondary coil 122 is wound on the second magnetic post 1123.

[0037] In some embodiments, the coil winding 12 further includes a second primary coil 123 and a third primary coil 124, wherein the first primary coil 121, the second primary coil 123, the secondary coil 122, and the third primary coil 124 are sequentially disposed between the first magnetic core 111 and the second magnetic core 112. Specifically, the second primary coil 123 and the third primary coil 124 are both wound around the outer periphery of the second magnetic post 1123, and the secondary coil 122 is located between the second primary coil 123 and the third primary coil 124.

[0038] In some embodiments, such as Figure 3 and Figure 4 As shown, two first magnetic arms 1112 are located radially outside the first primary coil 121 of the first magnetic post 1113 and form a first opening 1114 and a second opening 1115 respectively in the circumferential direction of the first magnetic post 1113. The two lead ends of the first primary coil 121 can extend from the first opening 1114 or the second opening 1115 to the insulating plate 13.

[0039] In some embodiments, to improve heat dissipation, the first magnetic plate 1111 has a first sector-shaped groove 1113 that is connected to the first opening 1114 through the first direction x, and the first magnetic plate 1111 has a second sector-shaped groove 1117 that is connected to the second opening 1115 through the first direction x.

[0040] In some embodiments, such as Figure 5 and Figure 6 As shown, two second magnetic arms 1122 are located radially outside the secondary coil 122 of the second magnetic post 1123 and form a third opening 1124 and a fourth opening 1125 respectively in the circumferential direction of the second magnetic post 1123. The two lead ends of the secondary coil 122 can extend from the third opening 1124 or the fourth opening 1125 to the insulating plate 13.

[0041] In some embodiments, to improve heat dissipation, the second magnetic plate 1121 is provided with a third sector-shaped groove 1126 that communicates with the third opening 1124 through the first direction x, and the second magnetic plate 1121 is provided with a fourth sector-shaped groove 1127 that communicates with the fourth opening 1125 through the first direction x upward.

[0042] In some embodiments, such as Figure 7 and Figure 8 As shown, the magnetic core 11 also includes a third magnetic core 113, which is disposed between the first magnetic core 111 and the second magnetic core 112 along the first direction x. Specifically, the third magnetic core 13 is connected between the first magnetic post 1113 and the second magnetic post 1123, and the third magnetic core 13 is also connected between the first magnetic arm 1112 and the second magnetic arm 1122.

[0043] In some embodiments, a first primary coil 121 is disposed between a first magnetic core 111 and a third magnetic core 113, and a second primary coil 123, a secondary coil 122, and a third primary coil 124 are disposed sequentially between the third magnetic core 113 and the second magnetic core 112.

[0044] In some embodiments, the third magnetic core 113 includes a third magnetic plate 1131 and two third magnetic arms 1132, the two third magnetic arms 1132 being respectively connected to both ends of the third magnetic plate 1131 along a third direction z. The first magnetic post 1113 and the second magnetic post 1123 abut against each other in the first direction x via the third magnetic plate 1131, and one first magnetic arm 1112 and one second magnetic arm 1122 abut against each other in the first direction x via the third magnetic arm 1132.

[0045] In some embodiments, the third magnetic arm 1132 includes a fifth limiting portion 11321, which protrudes from the third magnetic plate 1131 in a direction toward the first insulating plate 131 and abuts against the first limiting boss 1312a.

[0046] In some embodiments, the third magnetic arm 1132 includes a sixth limiting portion 11322, which protrudes from the third magnetic plate 1131 in a direction toward the second insulating plate 132, and abuts against the second limiting boss 1322a.

[0047] In some embodiments, to improve heat dissipation, the third magnetic arm 1132 is provided with a fifth sector-shaped groove 1133 that communicates with the first opening 1114 through the first direction x, and the third magnetic arm 1132 is provided with a sixth sector-shaped groove 1134 that communicates with the second opening 1115 through the first direction x.

[0048] In some embodiments, the first magnetic post 1113 and the third magnetic plate 1131 are connected by epoxy resin adhesive, and the second magnetic post 1123 and the third magnetic plate 1131 are connected by epoxy resin adhesive. Further, the first magnetic arm 1112 and the third magnetic arm 1132 are connected by epoxy resin adhesive, and the second magnetic arm 1122 and the third magnetic arm 1132 are connected by epoxy resin adhesive. This enhances the stability and reliability of the magnetic core 11 connection.

[0049] In this embodiment, the magnetic core 11 is divided into three parts: the first magnetic core 111, the second magnetic core 112, and the third magnetic core 113, which can improve the ease of assembly and production of the transformer 1, thereby improving production efficiency.

[0050] In some embodiments, a first primary coil 121 is disposed between a first magnetic core 111 and a third magnetic core 113 and is housed in the first limiting groove 1110, thereby restricting the movement of the first primary coil 121 along the first direction x. Further, a second primary coil 123, a secondary coil 122, and a third primary coil 124 are disposed between the third magnetic core 113 and the second magnetic core 112 and are all housed in the second limiting groove 1120, thereby restricting the movement of the second primary coil 123, the secondary coil 122, and the third primary coil 124 along the first direction x.

[0051] In some embodiments, such as Figure 3 and Figure 9As shown, the first insulating plate 131 includes a first base plate 1311, the aforementioned first limiting bosses 1312a and 1312b, and an abutting boss 1313. The first limiting bosses 1312a and 1312b and the abutting boss 1313 are all connected to the side of the first base plate 1311 facing the second insulating plate 132. The number of first limiting bosses 1312a and the number of first limiting parts 11122 are two each. The two first limiting bosses 1312a are arranged sequentially along the third direction z, and the two first limiting parts 11122 are arranged at intervals along the third direction z. The two first limiting parts 11122 are disposed on the two first limiting bosses 1312a, and each first limiting boss 1312a abuts against a corresponding first limiting part 11122. The number of first limiting protrusions 1312b and the number of third limiting parts 11222 are two each. The two first limiting protrusions 1312b are arranged sequentially along the third direction z, and the two third limiting parts 11222 are arranged at intervals along the third direction z. The two third limiting parts 11222 are arranged between the two first limiting protrusions 1312b, and each first limiting protrusion 1312b abuts against a corresponding third limiting part 11222.

[0052] Specifically, in combination Figure 10 and Figure 11 The first limiting boss 1312a includes a first boss 13121a and a first limiting platform 13122a connected to each other. The first limiting boss 1312b includes a first boss 13121b and a first limiting platform 13122b connected to each other. The first boss 13121a is used to abut against the first limiting part 11122 along the second direction y, and the first boss 13121b is used to abut against the third limiting part 11222 along the second direction y. The first limiting platform 13122a is used to abut against the first limiting part 11122 along the third direction z, and the first limiting platform 13122b is used to abut against the third limiting part 11222 along the third direction z. Thus, the movement of the first magnetic core 111 and the second magnetic core 112 along the third direction z is restricted by the first limiting boss 1312a and the first limiting boss 1312b.

[0053] In some embodiments, such as Figure 12 and Figure 13 As shown, the abutment boss 1313 includes a first abutment boss 1313a and a second abutment boss 1313b. Along the third direction z, the first abutment boss 1313a is disposed between the second magnetic arm 1122a and the second primary coil 123, abutting against the second primary coil 123 to restrict the movement of the second primary coil 123 along the third direction z. Along the third direction z, the second abutment boss 1313b is disposed between the second magnetic arm 1122b and the third primary coil 124, abutting against the third primary coil 124 to restrict the movement of the third primary coil 124 along the third direction z.

[0054] In some embodiments, such as Figure 14 As shown, along the first direction x, the third magnetic plate 1131 is disposed between the first limiting platform 13122a and the first abutting boss 1313a, and both the first limiting platform 13122a and the first abutting boss 1313a abut against the third magnetic plate 1131, further restricting the movement of the third magnetic core 113 along the first direction x.

[0055] In some embodiments, a first wire outlet hole 1314 is provided through the first insulating plate 131 (e.g., Figure 9 As shown), the lead end of the first primary coil 121 extends out of the first insulating plate 131 through the first outlet hole 1314.

[0056] In some embodiments, the first base plate 1311, the first limiting bosses 1312a and 1312b, and the abutting boss 1313 are integrally injection molded.

[0057] In some embodiments, the first insulating plate 131 is made of phenolic bakelite powder.

[0058] In some embodiments, such as Figure 15 As shown, the second insulating plate 132 includes a second base plate 1321 and second limiting protrusions 1322a and 1322b disposed on the second base plate 1321. The second limiting protrusions 1322a and 1322b are disposed on the side of the second base plate 1321 facing the first insulating plate 131, and are respectively connected to the first magnetic core 111, the second magnetic core 112, and the third magnetic core 113. There are two second limiting protrusions 1322a and two second limiting parts 11123. The two second limiting protrusions 1322a are arranged sequentially along the third direction z, and the two second limiting parts 11123 are spaced apart along the third direction z. Each second limiting protrusion 1322a abuts against a corresponding second limiting part 11123. The number of second limiting protrusions 1322b and the number of fourth limiting parts 11223 are two each. The two second limiting protrusions 1322b are arranged sequentially along the third direction z, and the two fourth limiting parts 11223 are arranged at intervals along the third direction z. Each second limiting protrusion 1322b abuts against a corresponding fourth limiting part 11223.

[0059] Specifically, such as Figure 16 , Figure 17 and Figure 18As shown, the second limiting boss 1322a includes a second boss 13221a and a second limiting platform 13222a connected to each other. The second limiting boss 1322b includes a second boss 13221b and a second limiting platform 13222b connected to each other. The second boss 13221a is used to abut against the second limiting portion 11123 along the second direction y, and the second boss 13221a is used to abut against the sixth limiting portion 11322 along the second direction y. The second boss 13221b is used to abut against the fourth limiting portion 11223 along the second direction y. The second limiting platform 13222a is used to abut against the second limiting portion 11123 along the third direction z, and the second limiting platform 13222a is used to abut against the sixth limiting portion 11322 along the third direction z. The second limiting platform 13222b is used to abut against the fourth limiting portion 11223 along the third direction z. Thus, the second limiting boss 1322a... a) and b) the second limiting boss 1322 restrict the movement of the magnetic core 11 in a third direction. In some embodiments, a second wire outlet hole 1323 (e) is provided through the second insulating plate 132. Figure 14 As shown), the lead ends of the second primary coil 123, the third primary coil 124 and the secondary coil 122 extend out of the second insulating plate 132 through the second outlet hole 1324.

[0060] In some embodiments, the second base plate 1321 and the second limiting bosses 1322a and 1322b are integrally injection molded.

[0061] In some embodiments, the second insulating plate 132 is made of phenolic bakelite powder.

[0062] In this embodiment, the first and second insulating boards are manufactured using injection molding, which offers higher output, simpler process, and greater cost advantage compared to the processing of epoxy fiberglass boards. Furthermore, the mechanical properties, insulation properties, temperature resistance, and moisture resistance of the phenolic bakelite powder-molded insulating boards are identical to those of epoxy fiberglass boards.

[0063] The transformer provided in this application adopts a frameless structure, uses an insulating plate to support the magnetic core, and sets a limiting boss and an abutment boss on the insulating plate to limit the magnetic core and coil winding, thereby reducing the risk of displacement during transformer installation.

[0064] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application's specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A transformer, characterized in that, include: First magnetic core; The second magnetic core is disposed on one side of the first magnetic core along the first direction; A coil winding is disposed between the first magnetic core and the second magnetic core; A first insulating plate is connected to the first end of the first magnetic core and the first end of the second magnetic core along the second direction. The side of the first insulating plate facing the first magnetic core is provided with a first limiting boss and an abutting boss. The first limiting boss is connected to the first magnetic core and the second magnetic core respectively, and the abutting boss abuts against the coil winding. A second insulating plate is provided along the second direction, and the second insulating plate is connected to the second end of the first magnetic core and the second end of the second magnetic core respectively, and the second insulating plate abuts against the coil winding; Wherein, the first direction and the second direction are perpendicular to each other.

2. The transformer according to claim 1, characterized in that, The first magnetic core includes a first magnetic plate and two first magnetic arms. The two first magnetic arms are respectively connected to the two ends of the first magnetic plate along a third direction, and the coil winding is disposed between the two first magnetic arms. Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

3. The transformer according to claim 2, characterized in that, Each of the first magnetic arms includes a first limiting portion that protrudes from the first magnetic plate in a direction toward the first insulating plate and abuts against the first limiting boss.

4. The transformer according to claim 3, characterized in that, The first insulating plate includes a first base plate, and the first limiting boss and the abutting boss are both connected to the side of the first base plate facing the second insulating plate; The number of first limiting protrusions and the number of first limiting portions are both two. The two first limiting protrusions are arranged sequentially along the third direction, and the two first limiting portions are arranged at intervals along the third direction. The two first limiting protrusions are arranged on the two first limiting portions, and each first limiting protrusion abuts against a corresponding first limiting portion.

5. The transformer according to claim 2, characterized in that, The second insulating plate includes a second base plate and a second limiting boss, wherein the second limiting boss is disposed on the side of the second base plate facing the first insulating plate; Each of the first magnetic arms includes a second limiting portion that protrudes from the first magnetic plate in a direction toward the second insulating plate and abuts against the second limiting boss.

6. The transformer according to claim 2, characterized in that, The first magnetic core further includes a first magnetic post, which is disposed on the side of the first magnetic plate facing the second magnetic core, and the coil winding is disposed on the first magnetic post.

7. The transformer according to claim 2, characterized in that, The second magnetic core includes a second magnetic plate and two second magnetic arms. The two second magnetic arms are respectively connected to the two ends of the second magnetic plate along the third direction, and the coil winding is disposed between the two second magnetic arms. Each second magnetic arm is connected to a corresponding first magnetic arm, and the first limiting boss is connected to two second magnetic arms and two first magnetic arms respectively.

8. The transformer according to any one of claims 1-7, characterized in that, The coil winding includes a first primary coil and a secondary coil, with the first primary coil and the secondary coil respectively disposed between the first magnetic core and the second magnetic core.

9. The transformer according to claim 8, characterized in that, The coil winding further includes a second primary coil and a third primary coil, wherein the first primary coil, the second primary coil, the secondary coil, and the third primary coil are sequentially disposed between the first magnetic core and the second magnetic core.

10. The transformer according to claim 9, characterized in that, The transformer also includes a third magnetic core, which is disposed between the first magnetic core and the second magnetic core along the first direction; The first primary coil is disposed between the first magnetic core and the third magnetic core, and the second primary coil, the secondary coil, and the third primary coil are disposed sequentially between the third magnetic core and the second magnetic core.

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