A transformer and charging pile

Abstract

This utility model relates to the field of charging pile technology, and discloses a transformer and a charging pile. The transformer includes a magnetic core, a coil, and a first separator. The coil includes a first layer of winding and a second layer of winding, both wound on the magnetic core, with the second layer of winding located on the side of the first layer of winding facing away from the magnetic core. The first separator is located between the first layer of winding and the second layer of winding, creating a gap between them. This structure solves the technical problem in the prior art where the conductor located in the middle of the coil has difficulty contacting external airflow, resulting in poor heat dissipation of the conductor in the middle of the coil.

Description

Technical Field

[0001] This utility model relates to the field of charging pile technology, and in particular to a transformer and a charging pile. Background Technology

[0002] Currently, new energy vehicles are more environmentally friendly than ordinary vehicles, and as a result, they are gradually entering people's lives. Charging piles are electrical integrated devices used to charge new energy vehicles.

[0003] In related technologies, a charging pile may include a main body, a charging gun, and a charging cable, with the charging cable positioned between the main body and the charging gun. Users can connect the charging gun to a new energy vehicle to charge it. The main body may include multiple charging modules, each of which may include a transformer. The transformer may include a magnetic core and a coil, with the coil wound around the periphery of the magnetic core.

[0004] Transformers generate a lot of heat during operation. Under normal circumstances, transformers use fans to generate airflow for heat dissipation. However, due to the large number of coils, the wires located in the middle of the coils have difficulty contacting the external airflow, resulting in poor heat dissipation for the wires located in the middle of the coils. Utility Model Content

[0005] The present invention aims to provide a transformer and charging pile to solve the technical problem in the prior art where the conductor located in the middle of the coil is difficult to contact with the external airflow, resulting in poor heat dissipation of the conductor located in the middle of the coil.

[0006] The technical problem solved by this utility model embodiment is addressed by the following technical solution: One embodiment of this utility model provides a transformer, comprising: magnetic core; A coil, the coil including a first layer of winding and a second layer of winding, both the first layer of winding and the second layer of winding are wound on the magnetic core, and the second layer of winding is located on the side of the first layer of winding away from the magnetic core; A first separator is located between the first layer winding and the second layer winding, such that there is a gap between the first layer winding and the second layer winding.

[0007] In some embodiments, the transformer further includes a second separator; The coil further includes a third layer of winding, which is wound around the magnetic core and located on the side of the second layer of winding facing away from the magnetic core; the second separator is located between the second layer of winding and the third layer of winding, so that there is a gap between the second layer of winding and the third layer of winding.

[0008] In some embodiments, the transformer further includes a connector, one end of the first separator extending out of the gap between the first layer winding and the second layer winding, one end of the second separator extending out of the gap between the second layer winding and the third layer winding, and the connector being connected between the first separator and the second separator.

[0009] In some embodiments, the first separator and the second separator are strip-shaped, and the extension directions of the first separator, the extension directions of the second separator, and the central axis of the magnetic core are parallel to each other; the connector is arc-shaped; one end of the connector is connected to the end of the first separator that extends out of the gap between the first layer winding and the second layer winding, and the other opposite end of the connector is connected to the end of the second separator that extends out of the gap between the first separator and the second separator.

[0010] In some embodiments, the transformer further includes a mounting frame having a receiving cavity, in which the magnetic core and the coil portion are located, the receiving cavity extending through opposite sides of the mounting frame; one end of the magnetic core is connected to one wall of the receiving cavity, and the other opposite end of the magnetic core is connected to the other wall of the receiving cavity.

[0011] In some embodiments, the mounting bracket includes a first side plate, a second side plate, a top plate, and a bottom plate. One end of the magnetic core is connected to the first side plate, and the other opposite end of the magnetic core is connected to the second side plate. The top plate is located above the coil, with one side of the top plate connected to the upper side of the first side plate and the other opposite side of the top plate connected to the upper side of the second side plate. The bottom plate is located below the coil, with one side of the bottom plate connected to the lower side of the first side plate and the other opposite side of the bottom plate connected to the lower side of the second side plate.

[0012] In some embodiments, the first side panel has two first clearance grooves, one of which is located on one side of the first side panel and the other is located on the opposite side of the first side panel; the second side panel has two second clearance grooves, one of which is located on one side of the first side panel and the other is located on the opposite side of the first side panel. In the direction of extension of the central axis of the magnetic core, the first clearance slot, the interval between the first layer winding and the second layer winding, and the second clearance slot are connected in sequence.

[0013] In some embodiments, the top plate includes a first connecting plate and a second connecting plate that are detachably connected to each other, wherein the side of the first connecting plate facing away from the second connecting plate is connected to the upper side of the first side plate, and the side of the second connecting plate facing away from the first connecting plate is connected to the upper side of the second side plate. The base plate includes a third connecting plate and a fourth connecting plate that are detachably connected to each other. The side of the third connecting plate facing away from the fourth connecting plate is connected to the lower side of the first side plate, and the side of the fourth connecting plate facing away from the third connecting plate is connected to the lower side of the second side plate. The magnetic core includes a first connecting segment and a second connecting segment that are detachably connected to each other. The side of the first connecting segment facing away from the second connecting segment is connected to the first side plate, and the side of the second connecting segment facing away from the first connecting segment is connected to the second side plate.

[0014] In some embodiments, the first layer winding includes a plurality of annular conductor segments, all of which are arranged sequentially along the extension direction of the central axis of the magnetic core, with adjacent annular conductor segments electrically connected to each other and spaced apart.

[0015] Compared with the prior art, the first separator is located between the first layer winding and the second layer winding, so that there is a gap between the first layer winding and the second layer winding. Therefore, when air flows through the transformer, the air flow can pass through the gap between the first layer winding and the second layer winding and contact the surface of the first layer winding. The air flow can directly carry away the heat from the surface of the first layer winding, thereby improving the heat dissipation efficiency of the first layer winding and avoiding the accumulation of heat due to poor local heat dissipation of the coil, so as to improve the overall heat dissipation efficiency of the coil. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0017] Figure 1 This is a perspective view of the transformer in one embodiment of the present invention; Figure 2 yes Figure 1 Exploded view of the transformer in the image; Figure 3 yes Figure 1 Exploded view of the transformer core and mounting bracket; Figure 4 yes Figure 1 A structural view of the transformer's magnetic core and mounting bracket; Figure 5 yes Figure 1A three-dimensional diagram of the transformer coils.

[0018] Figure label: 100. Transformer; 10. Magnetic core; 12. First connecting section; 14. Second connecting section; 20. Coil; 22. First layer winding; 222. Annular conductor segment; 24. Second layer winding; 26. Third layer winding; 30. First separator; 40. Second separator; 50. Connector; 60. Mounting bracket; 602. Receiving cavity; 62. First side plate; 6202. First clearance slot; 64. Second side plate; 6402. Second clearance slot; 66. Top plate; 662. First connecting plate; 664. Second connecting plate; 68. Bottom plate; 682. Third connecting plate; 684. Fourth connecting plate; 70. Mounting plate. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements can exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[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 invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0021] The following detailed description, in conjunction with all the accompanying drawings, illustrates a transformer 100 and a charging pile provided in this application through specific embodiments.

[0022] Please refer to Figure 1 and Figure 2One embodiment of this utility model discloses a charging pile, which may include a main body, a charging gun, and a charging cable, with the charging cable disposed between the main body and the charging gun. A user can connect the charging gun to a new energy vehicle to charge it. The main body may include a charging module, which may include multiple transformers 100 and a fan structure. The fan structure can generate airflow passing through the transformers 100, and the airflow can carry away heat from the surface of the transformers 100.

[0023] The transformer 100 includes a magnetic core 10, a coil 20, and a first separator 30. The coil 20 includes a first layer winding 22 and a second layer winding 24, both of which are wound on the magnetic core 10. The second layer winding 24 is located on the side of the first layer winding 22 facing away from the magnetic core 10. The first separator 30 is located between the first layer winding 22 and the second layer winding 24, so that there is a gap between the first layer winding 22 and the second layer winding 24.

[0024] With the above structure, the first separator 30 is located between the first layer winding 22 and the second layer winding 24, so that there is a gap between the first layer winding 22 and the second layer winding 24; then when airflow passes through the transformer 100, the airflow can pass through the gap between the first layer winding 22 and the second layer winding 24 and contact the surface of the first layer winding 22. The airflow can directly carry away the heat on the surface of the first layer winding 22, thereby improving the heat dissipation efficiency of the first layer winding 22 and avoiding the accumulation of heat due to poor local heat dissipation of the coil 20, so as to improve the overall heat dissipation efficiency of the coil 20.

[0025] Specifically, in this embodiment, the magnetic core 10 may include a columnar structure with a waist-shaped cross-section, and the central axis of the magnetic core 10 may be set parallel to the horizontal plane; the coil 20 may include a wire made of materials such as copper or aluminum with a circular cross-section, and the first layer winding 22 may be arranged around the magnetic core 10 in multiple turns, and the inner side of the first layer winding 22 may be attached to the surface of the magnetic core 10; the structure of the second layer winding 24 may be the same as the structure of the first layer winding 22.

[0026] The first separator 30 may include a rectangular bar-shaped columnar structure. The extension direction of the first separator 30 may be parallel to the central axis of the magnetic core 10. There may be multiple first separators 30. All first separators 30 may be evenly distributed around the magnetic core 10, thereby enabling the first separators 30 to more stably separate the first layer winding 22 from the second layer winding 24.

[0027] In other embodiments, the magnetic core 10 may also include other shapes, such as a cylinder or a cuboid; the cross-section of the coil 20 may also be other, such as an oblong shape, so that the coil 20 is flat overall; the inner side of the first layer winding 22 and the magnetic core 10 may also be separated from each other by other parts; the first separator 30 may also include other structures, such as a flat plate structure.

[0028] In some embodiments, the transformer 100 further includes a second separator 40; the coil 20 further includes a third layer winding 26, which is wound on the magnetic core 10 and is located on the side of the second layer winding 24 facing away from the magnetic core 10; the second separator 40 is located between the second layer winding 24 and the third layer winding 26, such that there is a gap between the second layer winding 24 and the third layer winding 26.

[0029] With the above structure, the second separator 40 is located between the second layer winding 24 and the third layer winding 26, so that there is a gap between the second layer winding 24 and the third layer winding 26; then when airflow passes through the transformer 100, the airflow can pass through the gap between the second layer winding 24 and the third layer winding 26 and contact the surface of the second layer winding 24. The airflow can directly carry away the heat on the surface of the second layer winding 24, thereby improving the heat dissipation efficiency of the second layer winding 24 and avoiding the accumulation of heat due to poor local heat dissipation of the coil 20, so as to improve the overall heat dissipation efficiency of the coil 20.

[0030] Specifically, in this embodiment, the structure of the third layer winding 26 can be the same as that of the first layer winding 22; the second separator 40 can include a strip-shaped columnar structure with a rectangular cross-section, the extension direction of the second separator 40 can be parallel to the central axis of the magnetic core 10, and there can be multiple second separators 40. All the second separators 40 can be evenly distributed around the magnetic core 10, so that the second separators 40 can more stably separate the second layer winding 24 and the third layer winding 26; the first separator 30 and the second separator 40 can also be connected to each other by an arc-shaped connecting segment.

[0031] In other embodiments, the transformer 100 may also include more layers of windings, and correspondingly, a separator may be provided between every two adjacent layers of windings to separate the two adjacent layers of windings so that there is a gap between the two adjacent layers of windings for airflow to pass through.

[0032] In some embodiments, the transformer 100 further includes a connector 50, one end of the first separator 30 extends out of the gap between the first layer winding 22 and the second layer winding 24, one end of the second separator 40 extends out of the gap between the second layer winding 24 and the third layer winding 26, and the connector 50 is connected between the first separator 30 and the second separator 40.

[0033] With the above structure, the connector 50 is connected between the first separator 30 and the second separator 40, so that the first separator 30 and the second separator 40 are relatively fixed, and the connector 50 can simultaneously support the first separator 30 and the second separator 40, so that the first separator 30 can more stably separate the first layer winding 22 and the second layer winding 24, and the first separator 30 can more stably separate the second layer winding 24 and the third layer winding 26.

[0034] Specifically, in this embodiment, the connector 50 may include a semi-circular arc-shaped structure, and the first separator 30, the second separator 40 and the connector 50 are integrally formed to form a U-shaped structure.

[0035] In other embodiments, the connector 50 may also include other structures, such as a cuboid or a cylinder; the first partition 30 and the connector 50, and the second partition 40 and the connector 50 may also be connected to each other in other ways, such as by welding or threaded connection.

[0036] In some embodiments, the first separator 30 and the second separator 40 are strip-shaped, and the extension direction of the first separator 30, the extension direction of the second separator 40, and the central axis of the magnetic core 10 are parallel to each other; the connector 50 is arc-shaped; one end of the connector 50 is connected to the end of the first separator 30 that extends out of the gap between the first layer winding 22 and the second layer winding 24, and the other opposite end of the connector 50 is connected to the end of the second separator 40 that extends out of the gap between the first separator 30 and the second separator 40.

[0037] With the above structure, the first separator 30 and the second separator 40 are strip-shaped. One end of the connector 50 is connected to the end of the first separator 30 that extends out of the gap between the first layer winding 22 and the second layer winding 24. The other end of the connector 50 is connected to the end of the second separator 40 that extends out of the gap between the first separator 30 and the second separator 40. This makes the whole consisting of the first separator 30, the second separator 40 and the connector 50 easier to manufacture, and the first separator 30, the second separator 40 and the connector 50 can form a whole. As a result, the transformer 100 has fewer parts and is easier to assemble.

[0038] Specifically, the first layer winding 22 and the second layer winding 24 can be evenly provided with multiple first separators 30, and the second layer winding 24 and the third layer winding 26 can be evenly provided with multiple second separators 40; all the first separators 30 are located at the same end of the magnetic core 10.

[0039] In some other embodiments, of two adjacent first separators 30, one connector 50 connected to the first separator 30 may be located at one end of the magnetic core 10, and the other connector 50 connected to the first separator 30 may be located at the other opposite end of the magnetic core 10.

[0040] Please refer to Figure 3 and Figure 4 In some embodiments, the mounting bracket 60 is also included, which has a receiving cavity 602. The magnetic core 10 and the coil 20 are partially located in the receiving cavity 602, which extends through opposite sides of the mounting bracket 60. One end of the magnetic core 10 is connected to one cavity wall of the receiving cavity 602, and the other opposite end of the magnetic core 10 is connected to the other cavity wall of the receiving cavity 602.

[0041] With the above structure, the mounting bracket 60 can be used to mount the magnetic core 10, and the mounting bracket 60 can also fix the coil 20 so that the transformer 100 can be fixed inside the charging pile. The receiving cavity 602 extends through the opposite sides of the mounting bracket 60, so that external airflow can enter the receiving cavity 602 through the two sides of the receiving cavity 602 and enter the gap between the first layer winding 22 and the second layer winding 24.

[0042] Specifically, in this embodiment, the mounting frame 60 may include a hollow structure formed by splicing together multiple plate-like structures, and the receiving cavity 602 may include a cavity similar to a cuboid.

[0043] In other embodiments, the mounting bracket 60 may also include other structures, such as a hollow structure formed by splicing multiple strip structures; the receiving cavity 602 may also include cavities of other shapes, such as circular or elliptical.

[0044] In some embodiments, the mounting bracket 60 includes a first side plate 62, a second side plate 64, a top plate 66, and a bottom plate 68. One end of the magnetic core 10 is connected to the first side plate 62, and the other opposite end of the magnetic core 10 is connected to the second side plate 64. The top plate 66 is located above the coil 20, with one side of the top plate 66 connected to the upper side of the first side plate 62 and the other opposite side of the top plate 66 connected to the upper side of the second side plate 64. The bottom plate 68 is located below the coil 20, with one side of the bottom plate 68 connected to the lower side of the first side plate 62 and the other opposite side of the bottom plate 68 connected to the lower side of the second side plate 64.

[0045] With the above structure, the first side plate 62 can fix one end of the magnetic core 10, and the second side plate 64 can fix the other end of the magnetic core 10; the top plate 66 can limit the upper side of the coil 20, and the bottom plate 68 can limit the lower side of the coil 20; at the same time, both the top plate 66 and the bottom plate 68 can connect the first side plate 62 and the second side plate 64, making the structure of the transformer 100 more stable.

[0046] Specifically, in this embodiment, both the top plate 66 and the bottom plate 68 can be parallel to the horizontal plane. The top plate 66 can include a plate-like structure that is rectangular in shape. The first side plate 62 can include two rectangular plates that are spliced ​​together. The structure of the bottom plate 68 can be the same as the structure of the first side plate 62. Both the first side plate 62 and the second side plate 64 can be perpendicular to the horizontal plane. The first side plate 62 can include a rectangular plate-like structure with relief grooves on both sides. The second side plate 64 can be the same as the structure of the first side plate 62.

[0047] The transformer 100 may also include a mounting plate 70, which has a rectangular plate structure. The base plate 68 can be fixed to the upper surface of the mounting plate 70 by welding or threaded connection. The length of the mounting plate 70 may be greater than the length of the base plate 68, and the width of the mounting plate 70 may also be greater than the width of the base plate 68. The side of the mounting plate 70 may be provided with clearance holes, and the pins of the coil 20 can pass through the clearance holes to be electrically connected to other electronic components of the charging pile.

[0048] In other embodiments, the top plate 66 and the bottom plate 68 may also include other structures, such as a monolithic plate structure; the first side plate 62 and the second side plate 64 may also include other structures, such as a rectangular plate structure.

[0049] In some embodiments, the first side plate 62 has two first clearance grooves 6202, one first clearance groove 6202 is formed on one side of the first side plate 62, and the other first clearance groove 6202 is formed on the other opposite side of the first side plate 62; the second side plate 64 has two second clearance grooves 6402, one second clearance groove 6402 is formed on one side of the first side plate 62, and the other second clearance groove 6402 is formed on the other opposite side of the first side plate 62.

[0050] In the direction of extension of the central axis of the magnetic core 10, the first clearance slot 6202, the interval between the first layer winding 22 and the second layer winding 24, and the second clearance slot 6402 are connected in sequence.

[0051] Through the above structure, the first clearance slot 6202, the gap between the first layer winding 22 and the second layer winding 24, and the second clearance slot 6402 are connected in sequence; the airflow can directly enter the gap between the first layer winding 22 and the second layer winding 24 through the first clearance slot 6202. After absorbing heat in the gap between the first layer winding 22 and the second layer winding 24 through the first clearance slot 6202, the airflow can directly flow out through the second clearance slot 6402. In this embodiment, the transformer 100 has less obstruction to the airflow, and the airflow velocity between the first layer winding 22 and the second layer winding 24 can be faster, further improving the heat dissipation efficiency of the transformer 100.

[0052] Specifically, in this embodiment, the first clearance groove 6202 can be in the shape of an isosceles trapezoid, with the bottom edge of the first clearance groove 6202 located at the groove opening, and the groove opening of the first clearance groove 6202 facing away from the magnetic core 10; the shape of the second clearance groove 6402 can be the same as the shape of the first clearance groove 6202.

[0053] In other embodiments, the first clearance groove 6202 may also include grooves of other shapes, such as elliptical or rectangular; the shape of the second clearance groove 6402 may also be different from the shape of the first clearance groove 6202.

[0054] In some embodiments, the top plate 66 includes a first connecting plate 662 and a second connecting plate 664 that are detachably connected to each other. The side of the first connecting plate 662 facing away from the second connecting plate 664 is connected to the upper side of the first side plate 62, and the side of the second connecting plate 664 facing away from the first connecting plate 662 is connected to the upper side of the second side plate 64.

[0055] The base plate 68 includes a third connecting plate 682 and a fourth connecting plate 684 that are detachably connected to each other. The side of the third connecting plate 682 facing away from the fourth connecting plate 684 is connected to the lower side of the first side plate 62, and the side of the fourth connecting plate 684 facing away from the third connecting plate 682 is connected to the lower side of the second side plate 64.

[0056] The magnetic core 10 includes a first connecting section 12 and a second connecting section 14 that are detachably connected to each other. The side of the first connecting section 12 facing away from the second connecting section 14 is connected to the first side plate 62, and the side of the second connecting section 14 facing away from the first connecting section 12 is connected to the second side plate 64.

[0057] With the above structure, during the assembly of the transformer 100, the whole formed by the first side plate 62, the first connecting plate 662, the third connecting plate 682 and the first connecting section 12 can be disassembled relative to the whole formed by the second side plate 64, the second connecting plate 664, the fourth connecting plate 684 and the second connecting section 14. Then, the coil 20 is sleeved on the first connecting section 12 or the second connecting section 14. Finally, the whole formed by the first side plate 62, the first connecting plate 662, the third connecting plate 682 and the first connecting section 12 is installed on the whole formed by the second side plate 64, the second connecting plate 664, the fourth connecting plate 684 and the second connecting section 14, so as to make the assembly of the transformer 100 more convenient.

[0058] Specifically, the first side plate 62, the first connecting plate 662, the third connecting plate 682 and the first connecting segment 12 can be integrally formed, and the second side plate 64, the second connecting plate 664, the fourth connecting plate 684 and the second connecting segment 14 can also be integrally formed; the first connecting plate 662 and the second connecting plate 664, the third connecting plate 682 and the fourth connecting plate 684, and the first connecting segment 12 and the second connecting segment 14 can be connected to each other by dispensing or threaded connection.

[0059] Please refer to Figure 5 In some embodiments, the first layer winding 22 includes a plurality of annular conductor segments 222, all of which are arranged sequentially in the direction of extension of the central axis of the magnetic core 10, and adjacent annular conductor segments 222 are electrically connected to each other and have a gap.

[0060] With the above structure, two adjacent annular conductor segments 222 are electrically connected to each other and have a gap, so that when the airflow passes through the coil 20, the airflow can contact the periphery of each annular conductor segment 222, avoiding poor local heat dissipation of the coil 20 and heat accumulation, so as to further improve the overall heat dissipation efficiency of the coil 20.

[0061] Specifically, the first layer of winding 22 may include a spiral structure formed by winding a single wire. The spiral structure may include multiple loop wire segments 222, with a gap between adjacent loop wire segments 222.

[0062] The structures of the second winding 24 and the third winding 26 can be the same as those of the first winding 22.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A transformer, characterized by include: magnetic core; A coil, the coil including a first layer of winding and a second layer of winding, both the first layer of winding and the second layer of winding are wound on the magnetic core, and the second layer of winding is located on the side of the first layer of winding away from the magnetic core; A first separator is located between the first layer winding and the second layer winding, such that there is a gap between the first layer winding and the second layer winding.

2. The transformer of claim 1, wherein, It also includes a second separator; The coil further includes a third layer of winding, which is wound around the magnetic core and located on the side of the second layer of winding facing away from the magnetic core; the second separator is located between the second layer of winding and the third layer of winding, so that there is a gap between the second layer of winding and the third layer of winding.

3. The transformer according to claim 2, characterized in that, It also includes a connector, one end of the first separator extends out of the gap between the first layer winding and the second layer winding, one end of the second separator extends out of the gap between the second layer winding and the third layer winding, and the connector is connected between the first separator and the second separator.

4. The transformer according to claim 3, characterized in that, The first separator and the second separator are strip-shaped, and the extension directions of the first separator, the second separator, and the central axis of the magnetic core are parallel to each other; the connector is arc-shaped; one end of the connector is connected to the end of the first separator that extends out of the gap between the first layer winding and the second layer winding, and the other opposite end of the connector is connected to the end of the second separator that extends out of the gap between the first separator and the second separator.

5. The transformer according to claim 1, characterized in that, It also includes a mounting bracket with a receiving cavity, in which the magnetic core and the coil portion are located, and the receiving cavity extends through opposite sides of the mounting bracket; one end of the magnetic core is connected to one cavity wall of the receiving cavity, and the other opposite end of the magnetic core is connected to the other cavity wall of the receiving cavity.

6. The transformer according to claim 5, characterized in that, The mounting bracket includes a first side plate, a second side plate, a top plate, and a bottom plate. One end of the magnetic core is connected to the first side plate, and the other opposite end of the magnetic core is connected to the second side plate. The top plate is located above the coil, with one side of the top plate connected to the upper side of the first side plate and the other opposite side of the top plate connected to the upper side of the second side plate. The bottom plate is located below the coil, with one side of the bottom plate connected to the lower side of the first side plate and the other opposite side of the bottom plate connected to the lower side of the second side plate.

7. The transformer according to claim 6, characterized in that, The first side plate has two first clearance grooves, one of which is located on one side of the first side plate and the other is located on the opposite side of the first side plate; the second side plate has two second clearance grooves, one of which is located on one side of the first side plate and the other is located on the opposite side of the first side plate. In the direction of extension of the central axis of the magnetic core, the first clearance slot, the interval between the first layer winding and the second layer winding, and the second clearance slot are connected in sequence.

8. The transformer according to claim 6, characterized in that, The top plate includes a first connecting plate and a second connecting plate that are detachably connected to each other. The side of the first connecting plate facing away from the second connecting plate is connected to the upper side of the first side plate, and the side of the second connecting plate facing away from the first connecting plate is connected to the upper side of the second side plate. The base plate includes a third connecting plate and a fourth connecting plate that are detachably connected to each other. The side of the third connecting plate facing away from the fourth connecting plate is connected to the lower side of the first side plate, and the side of the fourth connecting plate facing away from the third connecting plate is connected to the lower side of the second side plate. The magnetic core includes a first connecting segment and a second connecting segment that are detachably connected to each other. The side of the first connecting segment facing away from the second connecting segment is connected to the first side plate, and the side of the second connecting segment facing away from the first connecting segment is connected to the second side plate.

9. The transformer according to claim 1, characterized in that, The first layer of winding includes multiple ring-shaped conductor segments. All the ring-shaped conductor segments are arranged sequentially along the extension direction of the central axis of the magnetic core, and adjacent ring-shaped conductor segments are electrically connected to each other and have a gap.

10. A charging pile, characterized in that, The transformer includes the transformer as described in any one of claims 1-9.

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