Transformer, on-board power supply and vehicle

Abstract

This utility model relates to the field of transformer technology, and discloses a transformer, a vehicle power supply, and a vehicle. The transformer includes: a circuit board, comprising a substrate, a first winding, and a second winding, wherein the first winding and the second winding are disposed on the substrate and stacked along the thickness direction of the substrate; the substrate has a through hole, and the first winding and the second winding are both arranged around the through hole; a first magnetic core, comprising a first base plate and a first central column, the first base plate and the first central column being connected, the first central column passing through the through hole; the first magnetic core having a first heat dissipation hole, the first heat dissipation hole penetrating the first base plate and extending into the first central column; and a second magnetic core, disposed on the side of the circuit board facing away from the first base plate, the first central column being connected to the second magnetic core. The transformer of this utility model embodiment, by providing a first heat dissipation hole on the first magnetic core, can improve heat dissipation efficiency and avoid heat concentration.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a transformer, a vehicle power supply, and a vehicle. Background Technology

[0002] Transformers are commonly used in electronic products. Traditional transformers are made by winding coils on an existing frame and assembling them with a magnetic core. However, such transformers are large in size, have poor coupling and heat dissipation, have complex winding structures, and it is difficult to ensure the consistency of the windings. They cannot adapt to the development trend of electronic products.

[0003] Planar transformers are assembled from a PCB (Printed Circuit Board) and a magnetic core. The PCB has windings, so planar transformers have advantages such as small size, simple winding structure and good consistency. They can adapt to the development trend of electronic products becoming smaller and thinner. Although the heat dissipation effect of planar transformers has been improved compared with traditional transformers, the heat concentration of planar transformers is still relatively concentrated, and there is still room for optimization of heat dissipation efficiency. Utility Model Content

[0004] In view of this, the present invention provides a transformer, a vehicle power supply, and a vehicle to solve the problems of concentrated heat and poor heat dissipation in transformers.

[0005] In a first aspect, this utility model provides a transformer, comprising: a circuit board including a substrate, a first winding, and a second winding, wherein the first winding and the second winding are disposed on the substrate and stacked along the thickness direction of the substrate, the substrate is provided with a through hole, and the first winding and the second winding are both arranged around the through hole; a first magnetic core including a first base plate and a first central column, the first base plate and the first central column being connected, the first central column passing through the through hole, the first magnetic core being provided with a first heat dissipation hole, the first heat dissipation hole passing through the first base plate and extending into the first central column; and a second magnetic core disposed on the side of the circuit board opposite to the first base plate, wherein the first central column is connected to the second magnetic core.

[0006] Beneficial effects: The transformer of this utility model, by setting a first heat dissipation hole that penetrates through the first base plate, allows the inner wall of the first heat dissipation hole to exchange heat with the outside air, thereby improving the heat dissipation efficiency of the first magnetic core. It can effectively transfer the heat of the first central column to the air, avoiding heat accumulation in the first central column due to eddy current magnetic loss. Furthermore, since the first magnetic core is connected to the second magnetic core, the heat of the second magnetic core can also be transferred to the air through the first magnetic core, thus improving the heat dissipation efficiency of the second magnetic core as well.

[0007] In one alternative embodiment, the first heat dissipation hole extends through the first central column along its axial direction.

[0008] Beneficial effects: The longer length of the first heat dissipation hole increases the area of ​​the inner wall of the first heat dissipation hole, thereby increasing the heat exchange efficiency between the first central column and the air, effectively reducing the heat of the first central column and preventing heat accumulation.

[0009] In one optional embodiment, the second magnetic core is provided with a second heat dissipation hole, which penetrates the second magnetic core and communicates with the first heat dissipation hole.

[0010] Beneficial effects: By setting a second heat dissipation hole that penetrates the second magnetic core, the inner wall of the second heat dissipation hole can exchange heat with the outside air, improving the heat dissipation efficiency of the second magnetic core. This effectively transfers the heat of the first central column to the air, preventing heat accumulation in the first central column due to eddy current magnetic loss.

[0011] In one alternative embodiment, the transformer further includes a housing, at least partially disposed on the side of the first base plate facing away from the second magnetic core, wherein the first base plate and the housing are connected by a flexible thermally conductive structure.

[0012] Beneficial effects: By providing a flexible heat-conducting structure between the first base plate and the shell, the flexible heat-conducting structure can fill the gap between the first base plate and the shell, improve the heat exchange efficiency between the first base plate and the shell, and use the shell to transfer the heat of the first magnetic core and the second magnetic core to the air, thereby increasing the heat dissipation efficiency of the transformer.

[0013] In one alternative embodiment, the transformer further includes a heat-conducting element connected between the first winding and the housing, and / or connected between the second winding and the housing.

[0014] Beneficial effects: By setting up heat-conducting components, the heat of the first and second windings can be transferred to the housing, improving the heat exchange efficiency between the first and second windings and the housing. The housing is then used to transfer the heat of the first and second windings to the air, thereby increasing the heat dissipation efficiency of the transformer.

[0015] In one optional embodiment, there are multiple heat-conducting elements, which are spaced apart circumferentially along the first magnetic core; or, the heat-conducting elements are constructed as a ring structure, which extends circumferentially along the first magnetic core.

[0016] Beneficial effects: It can further increase the heat exchange efficiency between the first and second windings and the shell, and the heat dissipation effect of the first and second windings is better.

[0017] In one alternative embodiment, the end of the first central column away from the first base plate extends beyond the side of the circuit board away from the first base plate, and the connection point between the first central column and the second magnetic core is spaced apart from the circuit board.

[0018] Beneficial effects: Prevents stress on the circuit board from being transmitted to the connection between the first and second magnetic cores through the sealant, reducing the probability of separation between the first and second magnetic cores.

[0019] In one optional embodiment, the first magnetic core includes a plurality of first central pillars; the plurality of first central pillars are arranged in a column along a preset direction, or the plurality of first central pillars are arranged in an array.

[0020] Beneficial effects: It can integrate multiple transformers into one unit, resulting in a higher degree of transformer integration, reducing the number of transformers, streamlining production processes, and improving assembly efficiency.

[0021] In one optional embodiment, the first magnetic core further includes a first side post, which is connected to the first central post on the same side of the first base plate. The first side post and the first central post are spaced apart. The side of the first side post facing the first central post is constructed as an arc-shaped surface, which extends circumferentially along the first central post. And / or, the thickness of the first magnetic core is greater than the thickness of the second magnetic core.

[0022] Beneficial effect: Increases the window area, thereby increasing the winding width between the first side post and the first middle post.

[0023] Secondly, this utility model also provides a vehicle power supply, including the transformer described in the first aspect.

[0024] Beneficial effects: The vehicle power supply of this utility model embodiment, by utilizing the transformer described in the first aspect, can improve heat dissipation efficiency and avoid heat concentration.

[0025] Thirdly, this utility model also provides a vehicle, including the vehicle power supply described in the second aspect.

[0026] Beneficial effects: The vehicle of this utility model embodiment, utilizing the on-board power supply described in the second aspect, can improve heat dissipation efficiency and avoid heat concentration. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is one of the structural schematic diagrams of the transformer according to an embodiment of the present utility model;

[0029] Figure 2 This is a second schematic diagram of the transformer structure according to an embodiment of the present utility model;

[0030] Figure 3 This is an exploded view of the transformer according to an embodiment of the present invention;

[0031] Figure 4 This is a partial cross-sectional view of the transformer according to an embodiment of the present utility model;

[0032] Figure 5 This is a schematic diagram showing the connection between the first magnetic core and the second magnetic core in an embodiment of this utility model;

[0033] Figure 6 This is an exploded view of the first and second magnetic cores according to an embodiment of the present invention;

[0034] Figure 7 This is one of the structural schematic diagrams of the first magnetic core according to an embodiment of the present utility model;

[0035] Figure 8 This is a second schematic diagram of the structure of the first magnetic core according to an embodiment of the present invention;

[0036] Figure 9 This is the third schematic diagram of the structure of the first magnetic core in this embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Transformer;

[0039] 100. Circuit board; 110. Substrate; 120. First winding; 130. Second winding; 140. Via;

[0040] 200, First magnetic core; 210, First central column; 211, First heat dissipation hole; 220, First side column; 230, First base plate;

[0041] 300. Second magnetic core; 310. Second central post; 311. Second heat dissipation hole; 320. Second side post;

[0042] 400. Housing; 410. Flexible thermally conductive structure; 420. Sealant;

[0043] 500. Thermal conductive components. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are 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 are not intended to 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.

[0046] In the description of this utility model, "a plurality of" means two or more. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] The following is combined with Figures 1 to 9 The following describes embodiments of the present invention.

[0049] According to an embodiment of the present invention, a transformer 1 is provided, including a circuit board 100, a first magnetic core 200, and a second magnetic core 300.

[0050] The circuit board 100 includes a substrate 110, a first winding 120, and a second winding 130. The first winding 120 and the second winding 130 are disposed on the substrate 110 and stacked along the thickness direction of the substrate 110, wherein the first winding 120 and the second winding 130 are insulated from each other.

[0051] The substrate 110 has a through-hole 140, and the first winding 120 and the second winding 130 are both arranged around the through-hole 140. The first magnetic core 200 includes a first base plate 230 and a first central post 210. The first central post 210 passes through the through-hole 140 and has a first heat dissipation hole 211, which passes through the first base plate 230 and extends into the first central post 210. The second magnetic core 300 is disposed on the side of the circuit board 100 facing away from the first base plate 230, and the first central post 210 is connected to the second magnetic core 300.

[0052] For example, the first winding 120 and the second winding 130 can both be integrated into the substrate 110, that is, the substrate 110 forms a multi-layer structure with higher integration and higher production efficiency. Alternatively, the first winding 120 can be integrated into the substrate 110 and the second winding 130 can be located outside the substrate 110. Or, the second winding 130 can be integrated into the substrate 110 and the first winding 120 can be located outside the substrate 110. This reduces the thickness of the substrate 110 to a certain extent and reduces the processing difficulty.

[0053] In addition, the circuit board 100 also includes a third winding, a fourth winding, or more windings. It is understood that the number of windings on the circuit board 100 can be increased or decreased according to the needs of the transformer 1.

[0054] Specifically, the first winding 120 can be used as the primary winding, and the second winding 130 can be used as the secondary winding. That is, when alternating current is applied to the first winding 120, the first magnetic core 200 and the second magnetic core 300 generate alternating magnetic flux, causing the second winding 130 to generate an induced voltage or an induced current; or the second winding 130 can be used as the primary winding, and the first winding 120 can be used as the secondary winding. That is, when alternating current is applied to the second winding 130, the first magnetic core 200 and the second magnetic core 300 generate alternating magnetic flux, causing the first winding 120 to generate an induced voltage or an induced current.

[0055] The circuit board 100 may have multiple pins, and the first winding 120 and the second winding 130 are connected to different pins. The pins are used to conduct electricity with external components.

[0056] By placing the first winding 120 and the second winding 130 on the substrate 110, the gap between the windings in the first winding 120 is smaller, and the gap between the windings in the second winding 130 is smaller, which can reduce parameters such as distributed capacitance and parasitic inductance. Furthermore, the number of turns in the first winding 120 and the second winding 130 can be appropriately reduced, thereby increasing the switching frequency.

[0057] The first magnetic core 200 and the second magnetic core 300 are located on opposite sides of the circuit board 100 and are connected. The first central post 210 of the first magnetic core 200 passes through the through hole 140, which can realize the relative fixation between the circuit board 100, the first magnetic core 200 and the second magnetic core 300. Furthermore, since the circuit board 100, the first magnetic core 200 and the second magnetic core 300 are stacked and arranged in a planar manner, the volume of the transformer 1 can be reduced.

[0058] By setting a first heat dissipation hole 211, which penetrates the first base plate 230, the inner wall of the first heat dissipation hole 211 can exchange heat with the outside air, thereby improving the heat dissipation efficiency of the first magnetic core 200 and reducing the heat concentration caused by the eddy current magnetic loss of the first central column 210. Since the first magnetic core 200 is connected to the second magnetic core 300, the heat of the second magnetic core 300 can also be transferred to the air through the first magnetic core 200, thus improving the heat dissipation efficiency of the second magnetic core 300 and preventing heat accumulation.

[0059] The first magnetic core 200 can be of type "E", and the second magnetic core 300 can be of type "C", "I", or "E". Furthermore, the first central pillar 210 can be cylindrical, polygonal, or other shapes.

[0060] like Figure 1 and Figure 2 , Figure 4 and Figure 5 As shown, in the technical solution of this embodiment, the first heat dissipation hole 211 extends through the first central column 210 along its axial direction. This results in a longer length for the first heat dissipation hole 211, increasing the area of ​​its inner wall and thus increasing the heat exchange efficiency between the first central column 210 and the air. This effectively reduces the heat in the first central column 210 and prevents heat accumulation.

[0061] like Figure 1 and Figure 5 As shown, in the technical solution of this embodiment, the second magnetic core 300 is provided with a second heat dissipation hole 311, which penetrates the second magnetic core 300 and communicates with the first heat dissipation hole 211.

[0062] For example, the second magnetic core 300 may include a second base plate and a second central post 310, the second central post 310 being connected to the first central post 210, the second magnetic core 300 being "E" shaped, and the second central post 310 being cylindrical, polygonal, or other shapes.

[0063] By providing a second heat dissipation hole 311 that penetrates the second magnetic core 300, the inner wall of the second heat dissipation hole 311 can exchange heat with the outside air, thereby improving the heat dissipation efficiency of the second magnetic core 300. Since the first magnetic core 200 is connected to the second magnetic core 300, the heat of the first magnetic core 200 can also be transferred to the air through the second magnetic core 300, thus improving the heat dissipation efficiency of the first magnetic core 200 and effectively transferring the heat of the first central column 210 to the air.

[0064] like Figure 1 As shown, in this embodiment, the transformer 1 further includes a housing 400. At least a portion of the housing 400 is disposed on the side of the first base plate 230 facing away from the second magnetic core 300. The first base plate 230 and the housing 400 are connected by a flexible thermally conductive structure 410. The flexible thermally conductive structure 410 can be made of thermally conductive adhesive, thermally conductive silicone grease, or other flexible thermally conductive materials.

[0065] The housing 400 can be made of metal. The thermal conductivity of the housing 400 is higher than that of air. By providing a flexible heat-conducting structure 410 between the first base plate 230 and the housing 400, the flexible heat-conducting structure 410 can fill the gap between the first base plate 230 and the housing 400, thereby improving the heat exchange efficiency between the first base plate 230 and the housing 400. The housing 400 is used to transfer the heat of the first magnetic core 200 and the second magnetic core 300 to the air, thereby increasing the heat dissipation efficiency of the transformer 1.

[0066] Furthermore, due to the arrangement of the first heat dissipation hole 211 and the second heat dissipation hole 311, the first magnetic core 200 and the second magnetic core 300 have high heat dissipation efficiency. Therefore, only the first magnetic core 200 needs to contact the housing 400, and there is no need to contact the second magnetic core 300 with the housing 400. This can reduce the amount of flexible heat-conducting structure 410 used and reduce the production process.

[0067] In addition, the housing 400 can shield the first magnetic core 200 and the circuit board 100 to a certain extent, reducing the probability of the first magnetic core 200 and the circuit board 100 colliding with the outside world, reducing the probability of damage to the first magnetic core 200 and the circuit board 100, and facilitating the installation of the transformer 1.

[0068] like Figures 1-4 As shown, in this embodiment, the transformer 1 further includes a heat-conducting element 500. The first winding 120 is closer to the housing 400 than the second winding 130, and the heat-conducting element 500 is connected between the first winding 120 and the housing 400. The heat-conducting element 500 can be a thermally conductive silicone pad or made of other materials with insulating and thermally conductive properties.

[0069] For example, the first winding 120 and the second winding 130 can conduct heat to each other.

[0070] By setting the heat-conducting component 500, the heat of the first winding 120 and the second winding 130 can be transferred to the housing 400, thereby improving the heat exchange efficiency between the first winding 120 and the second winding 130 and the housing 400. The housing 400 is then used to transfer the heat of the first winding 120 and the second winding 130 to the air, thereby increasing the heat dissipation efficiency of the transformer 1.

[0071] The heat-conducting component 500 and the housing 400 can be connected by a flexible heat-conducting structure 410, which fills the gap between the heat-conducting component 500 and the housing 400, thereby increasing the heat exchange efficiency between them.

[0072] Furthermore, there are multiple heat-conducting elements 500, which are spaced apart circumferentially along the first magnetic core 200; or, the heat-conducting elements 500 are constructed as a ring structure that extends circumferentially along the first magnetic core 200.

[0073] This further increases the heat exchange efficiency between the first winding 120 and the second winding 130 and the housing 400, resulting in better heat dissipation of the first winding 120 and the second winding 130.

[0074] like Figures 1-2 As shown, in the technical solution of this embodiment, the end of the first central column 210 away from the first base plate 230 extends beyond the side of the circuit board 100 away from the first base plate 230, and the connection between the first central column 210 and the second magnetic core 300 is spaced apart from the circuit board 100. The first central column 210 and the second magnetic core 300 can be bonded together with sealant 420.

[0075] In the thickness direction of the circuit board 100, the size of the first magnetic core 200 is larger than the size of the second magnetic core 300, that is, the thickness of the first magnetic core 200 is greater than the thickness of the second magnetic core 300.

[0076] Since the first central column 210 extends beyond the side of the circuit board 100 away from the first base plate 230, the connection between the first central column 210 and the second magnetic core 300 is misaligned with the circuit board 100 in the thickness direction of the circuit board 100.

[0077] This reduces the probability of the overflowing sealant 420 coming into contact with the circuit board 100, thereby preventing the stress on the circuit board 100 from being transmitted to the connection between the first magnetic core 200 and the second magnetic core 300 through the sealant 420, reducing the probability of the first magnetic core 200 and the second magnetic core 300 separating, and improving the reliability of the connection between the first magnetic core 200 and the second magnetic core 300.

[0078] like Figures 3-9 As shown, in this embodiment, the first magnetic core 200 includes a plurality of first central pillars 210. These first central pillars 210 are arranged in a column along a preset direction, or in an array. The number of first central pillars 210 can be two, three, four, or more. Furthermore, the multiple first central pillars 210 can be connected in series or in parallel.

[0079] For example, there can be multiple second central pillars 310, and multiple second central pillars 310 are connected to multiple first central pillars 210 in a one-to-one correspondence.

[0080] Specifically, each first central column 210 is wound with a first winding 120 and a second winding 130, so that each first central column 210 and its corresponding first winding 120 and second winding 130 form an independent transformer 1. Each independent transformer 1 shares a magnetic circuit, which can increase the power of the transformer 1. In this way, it is equivalent to integrating multiple transformers 1 into one, which can reduce the number of transformers 1, shorten the production process, and improve assembly efficiency.

[0081] like Figures 3-9 As shown, in the technical solution of this embodiment, the first magnetic core 200 further includes a first side post 220. The first side post 220 and the first middle post 210 are connected to the same side of the first base plate 230. The first side post 220 and the first middle post 210 are spaced apart. The side of the first side post 220 facing the first middle post 210 is constructed as an arc surface, which extends along the circumference of the first middle post 210.

[0082] By constructing the side of the first side post 220 facing the first middle post 210 as an arc surface, the minimum distance between the first side post 220 and the first middle post 210 can be increased, that is, the window area can be increased, thereby increasing the winding width between the first side post 220 and the first middle post 210.

[0083] For example, the second magnetic core 300 also includes a second side post 320, which is connected to the second central post 310 on the same side of the second base plate 330. The second side post 320 and the second central post 310 are spaced apart. The side of the second side post 320 facing the second central post 310 is constructed as an arc-shaped surface, which extends circumferentially along the second central post 310. The second side post 320 is connected to the first side post 220, for example, by bonding them together with sealant 420. The connection between the first side post 220 and the second side post 320 is offset from the circuit board 100 in the thickness direction of the circuit board 100.

[0084] By constructing the side of the second side post 320 facing the second middle post 310 as an arc surface, the minimum distance between the second side post 320 and the second middle post 310 can be increased, that is, the window area can be increased, thereby increasing the winding width between the second side post 320 and the second middle post 310.

[0085] According to an embodiment of the present invention, in another aspect, the present invention also provides a vehicle power supply, including the aforementioned transformer 1.

[0086] For example, the first winding 120 and the second winding 130 of transformer 1 can be directly used as inductors in vehicle power supplies, that is, the windings of transformer 1 and the inductors in vehicle power supplies share the same structure, reducing the number of parts.

[0087] The vehicle power supply of this utility model embodiment utilizes the aforementioned transformer 1 to improve heat dissipation efficiency and avoid heat concentration.

[0088] According to an embodiment of the present invention, in another aspect, the present invention also provides a vehicle including the aforementioned on-board power supply. It is understood that the aforementioned transformer and the on-board power supply including the transformer can also be applied to other vehicles capable of carrying passengers or goods, such as low-altitude aircraft.

[0089] The vehicle of this utility model embodiment utilizes the above-mentioned on-board power supply to improve heat dissipation efficiency and avoid heat concentration.

[0090] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A transformer, characterized in that, include: A circuit board (100) includes a substrate (110), a first winding (120), and a second winding (130). The first winding (120) and the second winding (130) are disposed on the substrate (110) and stacked along the thickness direction of the substrate (110). The substrate (110) is provided with a via (140). The first winding (120) and the second winding (130) are both disposed around the via (140). The first magnetic core (200) includes a first base plate (230) and a first central column (210). The first base plate (230) and the first central column (210) are connected. The first central column (210) passes through the through hole (140). The first magnetic core (200) is provided with a first heat dissipation hole (211). The first heat dissipation hole (211) passes through the first base plate (230) and extends into the first central column (210). The second magnetic core (300) is disposed on the side of the circuit board (100) facing away from the first base plate (230), and the first central column (210) is connected to the second magnetic core (300).

2. The transformer according to claim 1, characterized in that, The first heat dissipation hole (211) passes through the first central column (210) along the axial direction of the first central column (210).

3. The transformer according to claim 1, characterized in that, The second magnetic core (300) is provided with a second heat dissipation hole (311), which penetrates the second magnetic core (300) and is connected to the first heat dissipation hole (211).

4. The transformer according to any one of claims 1-3, characterized in that, Also includes: The housing (400) is at least partially disposed on the side of the first base plate (230) facing away from the second magnetic core (300), and the first base plate (230) and the housing (400) are connected by a flexible thermally conductive structure (410).

5. The transformer according to claim 4, characterized in that, Also includes; A heat-conducting element (500) is connected between the first winding (120) and the housing (400), and / or, is connected between the second winding (130) and the housing (400).

6. The transformer according to claim 5, characterized in that, There are multiple heat-conducting elements (500), and the multiple heat-conducting elements (500) are arranged at circumferential intervals along the first magnetic core (200); or, The heat-conducting component (500) is constructed as a ring structure, which extends circumferentially along the first magnetic core (200).

7. The transformer according to any one of claims 1-3, characterized in that, The end of the first central column (210) away from the first base plate (230) extends beyond the side of the circuit board (100) away from the first base plate (230), and the connection between the first central column (210) and the second magnetic core (300) is spaced apart from the circuit board (100).

8. The transformer according to any one of claims 1-3, characterized in that, The first magnetic core (200) includes a plurality of first central pillars (210); The first central pillars (210) are arranged in a column along a preset direction, or the first central pillars (210) are arranged in an array.

9. The transformer according to any one of claims 1-3, characterized in that, The first magnetic core (200) further includes a first side post (220), the first side post (220) and the first middle post (210) are connected on the same side of the first base plate (230), the first side post (220) and the first middle post (210) are spaced apart, and the side of the first side post (220) facing the first middle post (210) is constructed as an arc surface, the arc surface extends along the circumference of the first middle post (210); And / or, the thickness of the first magnetic core (200) is greater than the thickness of the second magnetic core (300).

10. A vehicle-mounted power supply, characterized in that, Includes the transformer (1) according to any one of claims 1-9.

11. A vehicle, characterized in that, Includes the vehicle power supply as described in claim 10.

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