Transformer

Abstract

The utility model relates to the technical field of transformers, and discloses a transformer which comprises a support, a magnetic assembly, a first winding and a second winding. The support is provided with a through hole, a first annular groove, a second annular groove and a containing space, the through hole penetrates through the support in the first direction, the first annular groove and the second annular groove are sequentially arranged around the axis of the through hole, and the containing space surrounds the through hole and is arranged between the first annular groove and the second annular groove. The top plate and the bottom plate are oppositely arranged on the two sides of the support in the first direction, the winding column is arranged in the through hole, the first side column and the second side column are oppositely arranged on the two sides of the support in the second direction, and the second direction is perpendicular to the first direction. The first winding comprises a first part, a connecting part and a second part which are connected in sequence, the first part is wound around the first annular groove, and the second part is wound around the second annular groove. The second winding is arranged around the wrapping post in the accommodating space. According to the transformer, the production process can be simplified, and the production efficiency can be improved.

Description

Technical Field

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

[0002] The transformer winding adopts the sandwich winding method to reduce the leakage inductance of the transformer. The traditional transformer adopting the sandwich winding method includes a frame, a primary winding and a secondary winding. The primary winding includes a first primary coil, a second primary coil and a secondary coil. The outer wall of the frame is provided with an annular winding groove. The first primary coil, the secondary coil and the second primary coil are wound in the annular winding groove in sequence. The tail end of the first primary coil and the head end of the second primary coil extend out of the annular winding groove, are intertwined and welded together, so that the first primary coil is connected in series with the second primary coil.

[0003] In the current transformer, the first primary coil and the second primary coil need to be wound separately, and after winding, they need to be connected by winding solder, which has a complex process and low production efficiency. Utility Model Content

[0004] In view of the problems existing in the background technology, the purpose of the present application is to provide a transformer to at least solve the problems existing in the prior art.

[0005] According to a first aspect of the present application, a transformer is provided, comprising: a bracket, a first winding and a second winding of a magnetic component, the bracket being provided with a through hole, a first annular groove, a second annular groove and a receiving space, the through hole penetrating the bracket along a first direction, the first annular groove and the second annular groove being sequentially arranged on the outer wall of the bracket along the first direction, the first annular groove and the second annular groove being both arranged around the axis of the through hole, the receiving space being located between the first annular groove and the second annular groove, and the receiving space being arranged around the through hole; the magnetic component comprising a top plate and a bottom plate relatively arranged on both sides of the bracket along the first direction, a winding post arranged on the through hole, and a first side post and a second side post relatively arranged on both sides of the bracket along the second direction, both ends of the winding post, the first side post and the second side post being respectively connected to the top plate and the bottom plate, wherein the second direction is perpendicular to the first direction; the first winding comprising a first part, a connecting part and a second part connected in sequence, the first part being arranged around the first annular groove, and the second part being arranged around the second annular groove; the second winding being arranged around the winding post in the receiving space.

[0006] In one or more of the above optional embodiments, the second winding includes a first annular portion, a first lead-out pin and a second lead-out pin, the first annular portion is arranged in the accommodating space, a gap is formed between the head end and the tail end of the first annular portion, one end of the first lead-out pin is connected to the head end of the first annular portion, and one end of the second lead-out pin is connected to the tail end of the first annular portion.

[0007] In one or more of the above optional embodiments, the second winding includes a second annular portion, a third lead-out pin and a fourth lead-out pin, the second annular portion is arranged in the accommodating space, a gap is formed between the head end and the tail end of the second annular portion, one end of the third lead-out pin is connected to the head end of the second annular portion, and one end of the fourth lead-out pin is connected to the tail end of the second annular portion; the second annular portion is arranged on the side of the first annular portion facing away from the top plate, and along the first direction, the tail end of the first annular portion is aligned with the head end of the second annular portion; the second lead-out pin is attached to the third lead-out pin on a side facing the third lead-out pin.

[0008] In one or more of the above optional embodiments, an insulating sheet is provided between the first annular portion and the second annular portion.

[0009] In one or more of the above optional embodiments, the second winding includes a spiral portion, a first lead-out pin and a second lead-out pin, the spiral portion is arranged spirally around the winding column along the first direction in the accommodating space, one end of the first lead-out pin is connected to the head end of the spiral portion, and one end of the second lead-out pin is connected to the tail end of the spiral portion.

[0010] In one or more optional embodiments above, the bracket is provided with a mounting opening, and the mounting opening connects the accommodating space with the outside, and the accommodating space is directly connected with the through hole along a direction perpendicular to the first direction.

[0011] In one or more of the above optional embodiments, the transformer also includes a first limit plate and a second limit plate; the outer wall of the bracket is provided with a first limit groove, the first limit groove passes through the bracket along the first direction, the first limit plate cover is arranged on the notch of the first limit groove, and the first lead-out pin is passed through the first limit groove; the bracket is provided with a second limit groove, the second limit groove passes through the bracket along the first direction, the second limit plate cover is arranged on the notch of the second limit groove, and the second lead-out pin is passed through the second limit groove.

[0012] In one or more of the above optional embodiments, the bracket includes a main body and a first protrusion, the first annular groove and the second annular groove are sequentially arranged on the main body along the first direction, the first protrusion is connected to the main body, the first protrusion is located between the first annular groove and the second annular groove, a first wire passing groove is arranged at one end of the first protrusion away from the main body, the first wire passing groove passes through the first protrusion along the first direction, and the connecting part is at least partially arranged in the first wire passing groove.

[0013] In one or more of the above optional embodiments, the bracket also includes a second protrusion, which is connected to the main body, and along the first direction, the first protrusion and the second protrusion are arranged in sequence, and the gap between the first protrusion and the second protrusion is connected to the second annular groove; the number of the first wire-passing grooves is at least two, and at least two second wire-passing grooves are arranged at the end of the second protrusion away from the main body, and the at least two second wire-passing grooves pass through the second protrusion along the first direction, and at least two pins are arranged on the side of the second protrusion facing away from the first protrusion, and at least one of the first wire-passing grooves is spaced between adjacent pins; the number of the first wire-passing grooves is at least two, and the end of the first part away from the connecting part passes through a first wire-passing groove and a second wire-passing groove in sequence and then is connected to one of the pins, and the end of the second part away from the connecting part passes through another second wire-passing groove and then is connected to another pin.

[0014] In one or more of the above optional embodiments, a third winding is further included, and the third winding is wound around the second annular groove, and the third winding is located between the second part and the bottom of the second annular groove, the number of the second wire passing grooves is at least four, the number of the pins is at least four, one end of the third winding passes through another of the second wire passing grooves and is connected to another of the pins, and the other end of the third winding passes through another of the second wire passing grooves and is connected to another of the pins.

[0015] The beneficial effect of the embodiment of the present application is: the first part of the first winding of the transformer provided by the embodiment of the present application is wound on the first annular groove, the second part is wound on the second annular groove, and the second winding is arranged in the accommodating space between the first annular groove and the second annular groove. Compared with the traditional transformer, there is no need to connect the two first windings located on both sides of the second winding by winding and welding, which simplifies the production process and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0017] Figure 1 It is a three-dimensional diagram of a transformer provided by an embodiment of the utility model;

[0018] Figure 2 is another stereoscopic diagram of a transformer provided by an embodiment of the utility model;

[0019] Figure 3 It is an exploded schematic diagram of a transformer provided by an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a transformer support provided by an embodiment of the utility model;

[0021] Figure 5 yes Figure 4 Sectional view at AA in the middle;

[0022] Figure 6 It is a schematic diagram of a magnetic component of a transformer provided by an embodiment of the utility model;

[0023] Figure 7 It is a schematic diagram of a transformer support provided by an embodiment of the utility model;

[0024] Figure 8 It is a schematic diagram of a first winding of a transformer provided by an embodiment of the utility model when it is arranged on a bracket;

[0025] Fig. 9 It is a schematic diagram of a second winding of a transformer provided by an embodiment of the utility model when it is arranged on a bracket. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0028] In the description of this specification, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0030] See also Figure 1 and Figure 2 The transformer 1000 includes a support 1, a magnetic component 2, a first winding 3 and a second winding 4. The magnetic component 2, the first winding 3 and the second winding 4 are arranged on the support 1.

[0031] See also Figure 3-5 In some embodiments, the bracket 1 is provided with a through hole a, and the through hole a penetrates the bracket 1 along the first direction X. The magnetic component 2 includes a top plate 21 and a bottom plate 22 arranged on both sides of the bracket 1 relatively along the first direction X, a winding post 23 arranged in the through hole a, and a first side post 24 and a second side post 25 arranged on both sides of the bracket 1 relatively along the second direction Y, and both ends of the winding post 23, the first side post 24 and the second side post 25 are respectively connected to the top plate 21 and the bottom plate 22, wherein the second direction Y is perpendicular to the first direction X.

[0032] Please also read Figure 4 , Figure 5 , Figure 7 and Figure 8 In some embodiments, the bracket 1 is provided with a first annular groove 11 and a second annular groove 12. The first annular groove 11 and the second annular groove 12 are sequentially provided on the outer wall of the bracket 1 along the first direction X. The first annular groove 11 and the second annular groove 12 are both provided around the axis o of the through hole a. The first winding 3 includes a first portion 31, a connecting portion 32 and a second portion 33 connected in sequence. The first portion 31 is provided around the first annular groove 11, and the second portion 33 is provided around the second annular groove 12.

[0033] In some embodiments, the bracket 1 is provided with a receiving space b, which is located between the first annular groove 11 and the second annular groove 12 . The receiving space b is arranged around the through hole a, and the second winding 4 is arranged around the winding post 23 in the receiving space b.

[0034] The first part 31 of the first winding 3 of the transformer 1000 of the present application is wound on the first annular groove 11, the second part 33 is wound on the second annular groove 12, and the second winding 4 is arranged in the accommodating space b between the first annular groove 11 and the second annular groove 12. Compared with the traditional transformer 1000, there is no need to connect the two first windings located on both sides of the second winding 4 by winding and welding, which simplifies the production process and improves production efficiency.

[0035] See also Figure 3 and Figure 5 In some embodiments, the second winding 4 includes a first annular portion 41, a first lead-out pin 42 and a second lead-out pin 43. The first annular portion 41 is arranged in the accommodating space b, and a gap is formed between the head end and the tail end of the first annular portion 41. One end of the first lead-out pin 42 is connected to the head end of the first annular portion 41, and one end of the second lead-out pin 43 is connected to the tail end of the first annular portion 43.

[0036] In some embodiments, the first lead pin 42 is formed by bending and extending the first end of the first annular portion 41 .

[0037] In some embodiments, the second lead pin 43 is formed by bending and extending the tail end of the first annular portion 43 .

[0038] In some embodiments, the first winding 3 is the primary coil of the transformer 1000, the second winding 4 is the secondary winding of the transformer 1000, the first lead pin 42 and the second lead pin 43 are respectively used to connect to the anode of the diode and the load circuit, and the transformer 1000 is used for half-wave rectification.

[0039] In some embodiments, the second winding 4 includes a second annular portion 44, a third lead pin 45 and a fourth lead pin 46. The second annular portion 44 is disposed in the accommodation space b, a gap is formed between the head end and the tail end of the second annular portion 44, one end of the third lead pin 45 is connected to the head end of the second annular portion 44, and one end of the fourth lead pin 46 is connected to the tail end of the second annular portion 44. The second annular portion 44 is disposed on the side of the first annular portion 41 facing away from the top plate 21, and along the first direction X, the tail end of the first annular portion 41 is aligned with the head end of the second annular portion 44; the second lead pin 43 is attached to the third lead pin 45 on one side facing the third lead pin 45.

[0040] In some embodiments, the first annular portion 41 , the first lead pin 42 , the second lead pin 43 , the second annular portion 44 , the third lead pin 45 and the fourth lead pin 46 of the second winding 4 are all in the shape of flat strips.

[0041] In some embodiments, an insulating sheet 47 is provided between the first annular portion 41 and the second annular portion 44. The surface of the first annular portion 41 facing the second annular portion 44 and the surface of the second annular portion 44 facing the first annular portion 41 are insulated by the insulating sheet 47, and a surface of the second lead pin 43 facing the third lead pin 45 is attached to the third lead pin 45, so that the second lead pin 43 is electrically connected to the third lead pin 45, and thus the first annular portion 41 is electrically connected to the second annular portion 44.

[0042] It is understandable that, in some other embodiments, the first annular portion 41 and the second annular portion 44 may also be coated with insulating materials on the outer surfaces to avoid direct conduction between the first annular portion 41 and the second annular portion 44 .

[0043] In some embodiments, the third lead pin 45 is obtained by bending and extending the first end of the second annular portion 44 .

[0044] In some embodiments, the fourth lead pin 46 is formed by bending and extending the tail end of the second annular portion 44 .

[0045] In some embodiments, the first winding 3 is the primary coil of the transformer 1000, the second winding 4 is the secondary winding of the transformer 1000, the first lead pin 42 and the fourth lead pin 46 are respectively used to connect to the anodes of the two diodes, the second lead pin 43 and the third lead pin 45 are used together as the negative end of the DC output, and the transformer 1000 is used for full-wave rectification.

[0046] In some embodiments, when the second winding 4 needs to be wound around the winding pole 23 for more than two turns, the second winding 4 can also be configured as follows: the second winding 4 includes a spiral portion (not shown), a first lead-out pin 42 and a second lead-out pin 43, and the spiral portion is arranged in a first direction X spirally around the winding pole 23 in the accommodating space b, one end of the first lead-out pin 42 is connected to the head end of the spiral portion, and one end of the second lead-out pin 43 is connected to the tail end of the spiral portion.

[0047] In some embodiments, the first lead pin 42 is obtained by bending and extending the first end of the spiral portion.

[0048] In some embodiments, the second lead pin 43 is formed by bending and extending the tail end of the spiral portion.

[0049] See also Figure 3 , Figure 5 and Figure 7In some embodiments, the bracket 1 is provided with an installation opening c, which connects the accommodation space b with the outside world. The accommodation space b is directly connected to the through hole a along a direction perpendicular to the first direction X. The installation opening c is used as a channel for installing the second winding 4 in the accommodation space b. The "accommodation space b is directly connected to the through hole a" means that no other structure is provided between the accommodation space b and the through hole a along a direction perpendicular to the first direction X, and the accommodation space b surrounding the through hole a and the corresponding part of the through hole a and the accommodation space b together form a cavity. In this way, the second winding 4 can be inserted into the accommodation space b through the installation opening c.

[0050] Taking the second winding 4 including the first annular portion 41, the first lead-out pin 42 and the second lead-out pin 43 as an example, when installing the second winding 4, after inserting the end of the first annular portion 41 away from the notch into the installation port c, along the direction in which the first annular portion 41 is inserted into the installation port c, the end of the first annular portion 41 away from the notch passes through the part of the accommodating space b close to the installation port c and the through hole a in turn, and then enters the part of the accommodating space b away from the installation port c. At this time, the first annular portion 41 is located in the accommodating space b, and the connecting port d formed by the inner wall of the first annular portion 41 is aligned with the through hole a.

[0051] In the present application, the accommodating space b is connected to the outside world through the installation port c, and the accommodating space b is directly connected to the through hole a along a direction perpendicular to the first direction X, so that when the second winding 4 is installed, the second winding 4 can be directly inserted into the accommodating space b through the installation port c, which is easy to operate and conducive to improving production efficiency.

[0052] In some embodiments, the first lead pin 42 , the second lead pin 43 , the third lead pin 45 and the fourth lead pin 46 are all extended to the outside of the accommodation space b through the installation opening c to facilitate electrical connection of other devices.

[0053] See also Figure 4 , Figure 5 and Figure 7 In some embodiments, the bracket 1 includes a main body 14 and a first protruding portion 15, the first annular groove 11 and the second annular groove 12 are sequentially arranged on the main body 14 along the first direction X, the first protruding portion 15 is connected to the main body 14, the first protruding portion 15 is located between the first annular groove 11 and the second annular groove 12, the first protruding portion 15 is provided with a first wire groove 13 at one end away from the main body 14, the first wire groove 13 passes through the first protruding portion 15 along the first direction X, and the connecting portion 32 is at least partially arranged in the first wire groove 13. The inner wall of the first wire groove 13 can limit the connecting portion 32, so that the first winding 3 is more stably wound on the bracket 1.

[0054] In some embodiments, the body 14 includes a first partition 141, a second partition 142, a third partition 143, a fourth partition 144, a first connecting plate 145, a second connecting plate 146 and a side panel 147. Along the first direction X, the first partition 141, the second partition 142, the third partition 143 and the fourth partition 144 are arranged in sequence and spaced relative to each other. The first partition 141 is provided with a first through hole, which penetrates the first partition 141 along the first direction X; the second partition 142 is provided with a second through hole, which penetrates the second partition 142 along the first direction X; the third partition 143 is provided with a third through hole, which penetrates the third partition 143 along the first direction X; the fourth partition 144 is provided with a fourth through hole, which penetrates the fourth partition 144 along the first direction X. Along the first direction X, the first through hole, the second through hole, the third through hole and the fourth through hole are aligned with each other.

[0055] The two ends of the first connecting plate 145 are connected to the first partition 141 and the second partition 142 respectively. One end of the first connecting plate 145 surrounds the first through hole and is located on the surface of the first partition 141 facing the second partition 142. The other end of the first connecting plate 145 surrounds the second through hole and is located on the surface of the second partition 142 facing the first partition 141. The inner wall of the first connecting plate 145 encloses a first channel 145a, and the two ends of the first channel 145a are connected to the first through hole and the second through hole respectively. The surface of the first partition 141 facing the second partition 142, the outer wall of the first connecting plate 145, and the surface of the second partition 142 facing the first partition 141 together enclose a first annular groove 11.

[0056] The two ends of the second connecting plate 146 are respectively connected to the third partition plate 143 and the fourth partition plate 144. One end of the second connecting plate 146 surrounds the third through hole and is located on the surface of the third partition plate 143 facing the fourth partition plate 144. The other end of the second connecting plate 146 surrounds the fourth through hole and is located on the surface of the fourth partition plate 144 facing the third partition plate 143. The inner wall of the second connecting plate 146 encloses a second channel 146a, and the two ends of the second channel 146a are respectively connected to the third through hole and the fourth through hole. The surface of the third partition plate 143 facing the fourth partition plate 144, the outer wall of the second connecting plate 146 and the surface of the fourth partition plate 144 facing the third partition plate 143 together enclose a second annular groove 12.

[0057] The through hole a is composed of the first through hole, the first channel 145a, the second through hole, the portion of the gap between the second separator 142 and the third separator 143 aligned with the second through hole, the third through hole, the second channel 146a and the fourth through hole.

[0058] The two ends of the side panel 147 are respectively connected to the second partition 142 and the third partition 143. The side panel 147, the second partition 142 and the third partition 143 together enclose a storage space b. The installation port c is set on the side panel 147. The storage space b is connected to the part of the through hole a located between the second partition 142 and the third partition 143.

[0059] In some embodiments, the first protrusion 15 and the installation opening c are disposed on two sides of the side panel 147 opposite to each other.

[0060] In some embodiments, a surface at one end of the first protrusion 15 is flush with a surface of the second partition 142 facing the first partition 141 , and a surface at the other end of the first protrusion 15 is flush with a surface of the third partition 143 facing away from the second partition 142 .

[0061] See also Figure 7 and Figure 8 In some embodiments, the bracket 1 further comprises a second protruding portion 16, which is connected to the main body 14. The first protruding portion 15 and the second protruding portion 16 are arranged in sequence along the first direction X, and the gap between the first protruding portion 15 and the second protruding portion 16 is connected to the second annular groove 12. At least two second wire-passing grooves 161 are arranged at one end of the second protruding portion 16 away from the main body 14, and at least two second wire-passing grooves 161 penetrate the second protruding portion 16 along the first direction X. At least two pins 162 are arranged at the side of the second protruding portion 16 facing away from the first protruding portion 15, and at least one second wire-passing groove 161 is spaced between adjacent pins 162. The number of first wire-passing grooves 13 is at least two, and an end 311 of the first portion 31 away from the connecting portion 32 passes through a first wire-passing groove 13 and a second wire-passing groove 161 in sequence and then is connected to a pin 162, and an end 331 of the second portion 33 away from the connecting portion 32 passes through another second wire-passing groove 161 and then is connected to another pin 162.

[0062] In some embodiments, the second protrusion 16 is connected to an edge of the fourth separator 144 , and a surface of the second protrusion 16 facing the first protrusion 15 is flush with a surface of the fourth separator 144 facing the third separator 143 .

[0063] In some embodiments, the transformer 1000 further includes a third winding 5, which is wound around the second annular groove 12, and is located between the second portion 33 and the bottom of the second annular groove 12. The number of the second wire-passing grooves 161 is at least four, and the number of the pins 162 is at least four. One end 51 of the third winding 5 passes through another second wire-passing groove 161 and is connected to another pin 162, and the other end 52 of the third winding 5 passes through another second wire-passing groove 161 and is connected to another pin 162. Both ends of the third winding 5 are respectively connected to electrical devices to supply power to the electrical devices.

[0064] In some embodiments, two pins 162 respectively connected to two ends of the third winding 5 are connected to a control chip of the LLC converter, and the third winding 5 is used to power the control chip.

[0065] See also Figure 7 and Fig. 9 In some embodiments, the transformer 1000 further includes a first limiting plate 6. A first limiting groove 17 is provided on the outer wall of the bracket 1, and the first limiting groove 17 penetrates the bracket 1 along the first direction X. The first limiting plate 6 covers the notch of the first limiting groove 17, and the first lead pin 42 extends out of the accommodation space b through the installation opening c and penetrates the first limiting groove 17 along the first direction X. The inner wall of the first limiting groove 17 and the first limiting plate 6 together limit the first lead pin 42, so as to reduce the relative displacement between the first lead pin 42 and the bracket 1, thereby facilitating the connection of the first lead pin 42 with other devices.

[0066] In some embodiments, the transformer 1000 further includes a second limiting plate 7. The bracket 1 is provided with a second limiting groove 18, the second limiting groove 18 penetrates the bracket 1 along the first direction X, the second limiting plate 7 covers the notch of the second limiting groove 18, and the fourth lead pin 46 extends out of the accommodation space b through the installation opening c and penetrates the second limiting groove 18 along the first direction X. The inner wall of the second limiting groove 18 and the second limiting plate 7 together limit the fourth lead pin 46, so as to reduce the relative displacement between the fourth lead pin 46 and the bracket 1, thereby facilitating the connection of the fourth lead pin 46 with other devices.

[0067] In some embodiments, a first receiving groove 1411 is disposed on a side of the first partition 141 facing away from the second partition 142 . The first receiving groove 1411 penetrates the first partition 141 along the second direction Y, and the top plate 21 is at least partially disposed in the first receiving groove 1411 .

[0068] In some embodiments, a second receiving groove 1441 is disposed on a side of the fourth partition 144 facing away from the third partition 143 . The second receiving groove 1441 penetrates the first partition 141 along the second direction Y, and the bottom plate 22 is at least partially disposed in the second receiving groove 1441 .

[0069] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A transformer, characterized in that: include: A bracket, provided with a through hole, a first annular groove, a second annular groove and an accommodating space, wherein the through hole penetrates the bracket along a first direction, and along the first direction, the first annular groove and the second annular groove are sequentially arranged on the outer wall of the bracket, and the first annular groove and the second annular groove are both arranged around the axis of the through hole, and the accommodating space is located between the first annular groove and the second annular groove, and the accommodating space is arranged around the through hole; A magnetic assembly, comprising a top plate and a bottom plate arranged on both sides of the bracket relatively along the first direction, a winding post arranged on the through hole, and a first side post and a second side post arranged on both sides of the bracket relatively along the second direction, wherein both ends of the winding post, the first side post and the second side post are respectively connected to the top plate and the bottom plate, wherein the second direction is perpendicular to the first direction; A first winding comprises a first part, a connecting part and a second part which are connected in sequence, wherein the first part is wound around the first annular groove, and the second part is wound around the second annular groove; The second winding is arranged in the accommodating space and surrounds the winding post.

2. The transformer according to claim 1, characterized in that: The second winding includes a first annular portion, a first lead-out pin and a second lead-out pin. The first annular portion is arranged in the accommodating space. A gap is formed between the head end and the tail end of the first annular portion. One end of the first lead-out pin is connected to the head end of the first annular portion, and one end of the second lead-out pin is connected to the tail end of the first annular portion.

3. The transformer according to claim 2, characterized in that: The second winding comprises a second annular portion, a third lead pin and a fourth lead pin, the second annular portion is arranged in the accommodation space, a gap is formed between the head end and the tail end of the second annular portion, one end of the third lead pin is connected to the head end of the second annular portion, and one end of the fourth lead pin is connected to the tail end of the second annular portion; The second annular portion is arranged on a side of the first annular portion facing away from the top plate, and along the first direction, the tail end of the first annular portion is aligned with the head end of the second annular portion; the side of the second lead pin facing the third lead pin is attached to the third lead pin.

4. The transformer according to claim 3, characterized in that: An insulating sheet is disposed between the first annular portion and the second annular portion.

5. The transformer according to claim 1, characterized in that: The second winding includes a spiral portion, a first lead-out pin and a second lead-out pin. The spiral portion is arranged in the accommodating space along the first direction spirally around the winding column. One end of the first lead-out pin is connected to the head end of the spiral portion, and one end of the second lead-out pin is connected to the tail end of the spiral portion.

6. The transformer according to any one of claims 2 to 5, characterized in that: The bracket is provided with an installation opening, and the installation opening connects the accommodating space with the outside, and along a direction perpendicular to the first direction, the accommodating space is directly connected with the through hole.

7. The transformer according to claim 6, characterized in that: Also includes a first limiting plate and a second limiting plate; The outer wall of the bracket is provided with a first limiting groove, the first limiting groove penetrates the bracket along the first direction, the first limiting plate is covered at the notch of the first limiting groove, and the first lead-out pin is passed through the first limiting groove; The bracket is provided with a second limiting groove, the second limiting groove penetrates the bracket along the first direction, the second limiting plate cover is arranged at the notch of the second limiting groove, and the second lead-out pin is arranged through the second limiting groove.

8. The transformer according to claim 1, characterized in that: The bracket includes a main body and a first protrusion, the first annular groove and the second annular groove are sequentially arranged on the main body along the first direction, the first protrusion is connected to the main body, the first protrusion is located between the first annular groove and the second annular groove, a first wire passing groove is arranged at one end of the first protrusion away from the main body, the first wire passing groove passes through the first protrusion along the first direction, and the connecting part is at least partially arranged in the first wire passing groove.

9. The transformer according to claim 8, characterized in that: The bracket further includes a second protrusion, the second protrusion is connected to the main body, the first protrusion and the second protrusion are arranged in sequence along the first direction, and the gap between the first protrusion and the second protrusion is connected to the second annular groove; The number of the first wire-passing grooves is at least two, at least two second wire-passing grooves are arranged at one end of the second protrusion away from the main body, the at least two second wire-passing grooves penetrate the second protrusion along the first direction, at least two pins are arranged on the side of the second protrusion facing away from the first protrusion, and at least one first wire-passing groove is arranged between adjacent pins; The number of the first wire passing grooves is at least two, and the end of the first part away from the connecting part passes through a first wire passing groove and a second wire passing groove in sequence and is connected to a pin, and the end of the second part away from the connecting part passes through another second wire passing groove and is connected to another pin.

10. The transformer according to claim 9, characterized in that: It also includes a third winding, which is wound around the second annular groove, and is located between the second part and the bottom of the second annular groove. The number of the second wire passing grooves is at least four, and the number of the pins is at least four. One end of the third winding passes through another of the second wire passing grooves and is connected to another of the pins, and the other end of the third winding passes through another of the second wire passing grooves and is connected to another of the pins.

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