Transformer and electronic device

Abstract

The present application provides a transformer and an electronic device, relating to the technical field of transformers, to solve the problem that in the related art, the assembly method cannot well adjust the magnitude of leakage magnetic flux. The transformer includes a primary-side skeleton, a secondary-side skeleton, a first magnetic core, and a second magnetic core; the second magnetic core is arranged at an interval from the first magnetic core, and the primary-side skeleton is sleeved outside the first magnetic core; the secondary-side skeleton is sleeved outside the primary-side skeleton, a cavity is formed between the secondary-side skeleton and the primary-side skeleton, the second magnetic core is located in the cavity, the secondary-side skeleton has an edge, the edge is perpendicular to the direction from the first magnetic core to the second magnetic core, the edge is used as a reference edge, and the distances from the first magnetic core to the reference edge and from the second magnetic core to the reference edge are both adjustable. The present application can adjust the leakage inductance area by adjusting the primary-side skeleton or the distances from the first magnetic core and the second magnetic core to the reference edge respectively.

Description

Technical Field

[0001] This application relates to the technical field of transformers, and in particular, to a transformer and an electronic device. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are a magnetic core or iron core, a primary winding, a secondary winding, and a transformer skeleton, etc. Among them, the winding connected to the power supply is called the primary winding, and the rest of the windings are called secondary windings. The role of the transformer skeleton is to wind the wire and fix the magnetic core, which is an indispensable part of the transformer.

[0003] When an alternating voltage is applied to the primary winding, an alternating current will be generated. Under the action of the alternating current, an alternating magnetic flux will be generated in the magnetic core, and then a voltage or current will be induced in the secondary winding. Usually, most of the magnetic flux will pass through the magnetic core. Similarly, a small part of the magnetic flux cannot pass through. This part of the magnetic flux that cannot pass through is called leakage magnetic flux. In the design and modulation of actual solutions, it is necessary to continuously adjust the magnitude of the leakage magnetic flux to optimize the performance of the transformer. In the related art, the transformer skeleton is sleeved on the magnetic core, and the coil is wound on the transformer skeleton.

[0004] However, the assembly method in the related art cannot well adjust the magnitude of the leakage magnetic flux. Summary of the Invention

[0005] In order to solve the problems mentioned in the background art, this application provides a transformer and an electronic device, which can adjust the leakage inductance area by adjusting the distances of the primary skeleton and the secondary skeleton from the reference edge respectively, or by adjusting the distances of the first magnetic core and the second magnetic core from the reference edge respectively.

[0006] To achieve the above object, a first aspect of an embodiment of this application provides a transformer, including a primary skeleton, a secondary skeleton, a first magnetic core, and a second magnetic core. The second magnetic core is arranged at an interval from the first magnetic core, and the primary skeleton is sleeved outside the first magnetic core;

[0007] The secondary skeleton is sleeved outside the primary skeleton, a cavity is formed between the secondary skeleton and the primary skeleton, the second magnetic core is located in the cavity, and at least part of the primary skeleton is located between the first magnetic core and the second magnetic core;

[0008] The secondary skeleton has an edge, and the edge is used as the reference edge, and the distances of the primary skeleton from the reference edge, the first magnetic core from the reference edge, and the second magnetic core from the reference edge are all adjustable.

[0009] The transformer as described above, optionally, further includes a primary winding and a secondary winding. The primary winding is wound around the primary skeleton, and the secondary winding is wound around the secondary skeleton. The primary winding and the secondary winding are electrically connected.

[0010] The transformer as described above, optionally, the primary skeleton is a cylindrical part, and / or the secondary skeleton is a cylindrical part;

[0011] The edge includes a first edge, and the first edge serves as a first reference edge;

[0012] The primary skeleton has a skeleton center. The distance from the edge on the side of the primary skeleton close to the first reference edge to the skeleton center is a first distance, and the distance from one edge of the secondary skeleton to the skeleton center is a second distance. The first edge forms one edge of the secondary skeleton;

[0013] And both the first distance and the second distance are adjustable.

[0014] The transformer as described above, optionally, there is a spacing between the edge on the side of the primary skeleton close to the first reference edge and the first reference edge;

[0015] The spacing is not less than 1 mm.

[0016] The transformer as described above, optionally, the edge includes a second edge, and the second edge is connected to the first edge. The second edge forms another edge of the secondary skeleton;

[0017] The second edge serves as a second reference edge. The distance from the edge on the side of the first magnetic core close to the second reference edge to the second reference edge is a third distance, and the distance from the edge on the side of the second magnetic core close to the second reference edge to the second reference edge is a fourth distance;

[0018] And both the third distance and the fourth distance are adjustable.

[0019] The transformer as described above, optionally, a primary wire inlet groove and a primary wire outlet groove are provided on the primary skeleton. The primary wire inlet groove and the primary wire outlet groove are opened at different positions on the primary skeleton, and at least part of the primary winding is wound around the primary skeleton;

[0020] One end of the primary winding passes through the primary wire outlet groove and is electrically connected to the secondary winding, and the other end of the primary winding passes through the primary wire inlet groove and is electrically connected to the primary skeleton.

[0021] For the transformer as described above, optionally, a secondary side wire inlet groove and a secondary side wire outlet groove are provided on the secondary side skeleton, the secondary side wire inlet groove and the secondary side wire outlet groove are provided at different positions on the secondary side skeleton, and at least a part of the secondary side winding is wound around the secondary side skeleton;

[0022] One end of the secondary side winding passes through the secondary side wire outlet groove and is electrically connected to the primary side winding, and the other end of the secondary side winding passes through the secondary side wire inlet groove and is electrically connected to the secondary side skeleton.

[0023] For the transformer as described above, optionally, it further includes a base, a first mounting portion is provided on the base, and the secondary side skeleton is connected to the base through the first mounting portion;

[0024] And / or, a second mounting portion is provided on the secondary side skeleton, the second mounting portion is located in the cavity, and the primary side skeleton is connected to the secondary side skeleton through the second mounting portion;

[0025] A sliding groove is provided on one of the base and the secondary side skeleton, a sliding block is provided on the other of the base and the secondary side skeleton, the sliding block and the sliding groove are correspondingly arranged, and the sliding block can slide reciprocally in the sliding groove;

[0026] It further includes a driving member, the driving member is provided between the base and the secondary side skeleton, and the driving member is configured to drive the sliding block to slide in the sliding groove so as to adjust the primary side skeleton, the secondary side skeleton, the first magnetic core and the second magnetic core to a preset position.

[0027] For the transformer as described above, optionally, it further includes a connecting component, and the connecting component includes a connecting member and a connecting hole;

[0028] One of the connecting member and the connecting hole is provided on the primary side skeleton, and the other of the connecting member and the connecting hole is provided on the first magnetic core;

[0029] And / or, one of the connecting member and the connecting hole is provided on the secondary side skeleton, and the other of the connecting member and the connecting hole is provided on the first magnetic core and / or the second magnetic core;

[0030] The connecting member and the connecting hole are correspondingly arranged, and the connecting member is assembled in the connecting hole.

[0031] A second aspect of the embodiments of the present application provides an electronic device, including a device body and a transformer, the transformer is arranged in the device body; the transformer is electrically connected to the device body.

[0032] The transformer and electronic device provided by the embodiments of the present application are configured by arranging a first magnetic core and a second magnetic core with a gap therebetween. In this way, by adjusting the distances of the first magnetic core and the second magnetic core from a reference edge, the leakage inductance of the transformer can be adjusted. Additionally, by providing a primary skeleton and a secondary skeleton, the leakage inductance of the transformer can also be adjusted by varying the distance of the primary skeleton from the reference edge. Moreover, by sleeving the primary skeleton around the outside of the first magnetic core and the secondary skeleton around the outside of the primary skeleton, the above arrangement ensures that the primary skeleton only sleeves the first magnetic core, and the secondary skeleton sleeves both the first magnetic core and the second magnetic core. Thus, the leakage inductance of the transformer can also be adjusted by varying the area ratio of the first magnetic core and the second magnetic core.

[0033] In addition to the technical problems solved by the embodiments of the present application, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features of the technical solutions described above, other technical problems that can be solved by the transformer and electronic device provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a schematic structural diagram of the primary skeleton, secondary skeleton, first magnetic core, and second magnetic core provided by the embodiments of the present application;

[0036] Figure 2 It is a schematic structural diagram of the primary skeleton, secondary skeleton, first magnetic core, second magnetic core, primary winding, and secondary winding provided by the embodiments of the present application;

[0037] Figure 3 It is a schematic structural diagram of the primary skeleton and secondary skeleton provided by the embodiments of the present application;

[0038] Figure 4 It is a schematic structural diagram of the base, first magnetic core, and second magnetic core provided by the embodiments of the present application.

[0039] DESCRIPTION OF THE REFERENCE NUMERALS

[0040] 100 - Primary skeleton; 110 - Skeleton center; 200 - Secondary skeleton;

[0041] 210 - Edge; 211 - First edge; 212 - Second edge;

[0042] 300 - First magnetic core; 400 - Second magnetic core; 500 - Cavity;

[0043] 600 - Primary winding; 700 - Secondary winding; 800 - Base. Detailed implementation mode

[0044] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are magnetic cores or iron cores, coils, and transformer skeletons, etc. The coil has two or more windings. Among them, the winding connected to the power supply is called the primary winding, and the remaining windings are called secondary windings. The function of the transformer skeleton is to wind the wire and fix the magnetic core, which is an indispensable part of the transformer. The main functions of the transformer are: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), etc.

[0045] When the transformer is working: when an alternating voltage is applied to the primary winding, an alternating current will be generated. Under the action of the alternating current, an alternating magnetic flux will be generated in the magnetic core, and then a voltage or current will be induced in the secondary winding. Usually, most of the magnetic flux will pass through the magnetic core. Similarly, there is also a small part of the magnetic flux that cannot pass through. This part of the magnetic flux that cannot pass through is called leakage magnetic flux. In other words, the magnetic lines of force generated by the coil cannot all pass through the secondary winding, and this part of the magnetic flux that cannot pass through is the leakage magnetic flux.

[0046] Among them, the magnitude of the leakage magnetic flux has a certain relationship with the density, number of turns, material, voltage, current, etc. of the coil. In the design and modulation of the actual scheme, it is necessary to continuously adjust the magnitude of the leakage magnetic flux to optimize the performance of the transformer. In addition, the magnitude of the leakage magnetic flux is also related to the distance between the primary skeleton and the secondary skeleton. The greater the distance between the primary skeleton and the secondary skeleton, the greater the leakage magnetic flux; conversely, the smaller the distance between the primary skeleton and the secondary skeleton, the smaller the leakage magnetic flux.

[0047] In the related art, the transformer includes a first magnetic core and a second magnetic core. The first magnetic core and the second magnetic core are stacked on top of each other to form an integral magnetic core. The transformer skeleton is sleeved outside the integral magnetic core. The transformer skeleton includes two skeletons arranged opposite to each other, and the coils are respectively wound on the transformer skeleton. After the number of turns of the coil is determined, the leakage inductance of the transformer is also determined. Among them, in the assembly method in the related art, in order to make full use of the winding space of the transformer skeleton, the distance between the two skeletons will be set relatively close, resulting in a smaller leakage inductance of the transformer. However, too small a leakage inductance will cause the working frequency of the transformer to be higher and the frequency range to be wider, thereby resulting in a decline in the overall performance of the transformer. And if the distance between the two skeletons is set relatively far, the winding space will be sacrificed, and the distance between the two skeletons cannot be accurately controlled.

[0048] Based on the above technical problems, the present application provides a transformer and an electronic device. By providing a first magnetic core and a second magnetic core and arranging them at intervals, in this way, by adjusting the distance between the first magnetic core and the reference edge and the distance value between the second magnetic core and the reference edge, the leakage inductance of the transformer can be adjusted. In addition, by providing a primary skeleton and a secondary skeleton, in this way, by adjusting the distance between the primary skeleton and the reference edge, the leakage inductance of the transformer can also be adjusted. In addition, by sleeving the primary skeleton outside the first magnetic core and sleeving the secondary skeleton outside the primary skeleton, the above arrangement makes the primary skeleton only sleeve the first magnetic core, and the secondary skeleton sleeves the first magnetic core and the second magnetic core. In this way, the leakage inductance of the transformer can also be adjusted by adjusting the area ratio of the first magnetic core and the second magnetic core.

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0050] Figure 1 It is a schematic structural diagram of the primary skeleton, secondary skeleton, first magnetic core, and second magnetic core provided by the embodiment of the present application. Figure 2 It is a schematic structural diagram of the primary skeleton, secondary skeleton, first magnetic core, second magnetic core, primary winding, and secondary winding provided by the embodiment of the present application. Figure 3 It is a schematic structural diagram of the primary skeleton and secondary skeleton provided by the embodiment of the present application. Figure 4 It is a schematic structural diagram of the base, first magnetic core, and second magnetic core provided by the embodiment of the present application.

[0051] See Figure 1 As shown, the embodiment of the present application provides a transformer, including a primary skeleton 100, a secondary skeleton 200, a first magnetic core 300, and a second magnetic core 400. The second magnetic core 400 is arranged at intervals with the first magnetic core 300. Among them, the distance between the second magnetic core 400 and the first magnetic core 300 is not further limited and can be specifically set according to the actual situation.

[0052] During assembly, the primary skeleton 100 is sleeved outside the first magnetic core 300. A cavity 500 is formed between the secondary skeleton 200 and the primary skeleton 100. The second magnetic core 400 is located in the cavity 500, and at least part of the primary skeleton 100 is located between the first magnetic core 300 and the second magnetic core 400.

[0053] The secondary-side skeleton 200 has an edge 210, which serves as a reference edge, and the distances from the primary-side skeleton 100 to the reference edge, from the first magnetic core 300 to the reference edge, and from the second magnetic core 400 to the reference edge are all adjustable.

[0054] Specific description: First, by setting the first magnetic core 300 and the second magnetic core 400 and arranging them at intervals, in this way, by adjusting the distances from the first magnetic core 300 to the reference edge and from the second magnetic core 400 to the reference edge, the leakage inductance of the transformer can be adjusted. Among them, the distances from the first magnetic core 300 to the reference edge and from the second magnetic core 400 to the reference edge can be set according to actual needs.

[0055] In addition, by setting the primary-side skeleton 100 and the secondary-side skeleton 200, in this way, by adjusting the distance from the primary-side skeleton 100 to the reference edge, the leakage inductance of the transformer can also be adjusted. Among them, the distance from the primary-side skeleton 100 to the reference edge can also be set according to actual needs.

[0056] In addition, by sleeving the primary-side skeleton 100 outside the first magnetic core 300 and sleeving the secondary-side skeleton 200 outside the primary-side skeleton 100, the above settings make the primary-side skeleton 100 only sleeve the first magnetic core 300, and the secondary-side skeleton 200 sleeves the first magnetic core 300 and the second magnetic core 400. In this way, the leakage inductance of the transformer can also be adjusted by adjusting the area ratio of the first magnetic core 300 and the second magnetic core 400, and the area ratio is also adjusted by the distance ratio.

[0057] In a feasible implementation manner, refer to Figure 2 As shown, it further includes a primary winding 600 and a secondary winding 700. The primary winding 600 is wound around the primary-side skeleton 100, the secondary winding 700 is wound around the secondary-side skeleton 200, and the primary winding 600 and the secondary winding 700 are electrically connected.

[0058] During operation, when an alternating voltage is applied to the primary winding 600 on the primary-side skeleton 100, an alternating current will be generated. Under the action of the alternating current, an alternating magnetic flux will be generated in the magnetic core of the transformer, and then an induced electromotive force will be generated in the secondary winding 700, thereby realizing the change of voltage.

[0059] In a feasible implementation manner, refer to Figure 3 As shown, the primary-side skeleton 100 is a cylindrical part, and the secondary-side skeleton 200 is also a cylindrical part. Or, one of the primary-side skeleton 100 and the secondary-side skeleton 200 is a cylindrical part. In this embodiment, the shapes of the primary-side skeleton 100 and the secondary-side skeleton 200 are not specifically limited.

[0060] Refer to Figure 1 and Figure 2As shown, the edge 210 includes a first edge 211. The first edge 211 serves as the first reference edge. The original edge skeleton 100 has a skeleton center. The distance from the edge 210 on the side of the original edge skeleton 100 close to the first reference edge to the skeleton center is the first distance, and the distance from one of the edges of the secondary edge skeleton 200 to the skeleton center is the second distance. Among them, see Figure 1 As shown, the first edge 211 forms one of the edges of the secondary edge skeleton 200; and both the first distance and the second distance are adjustable.

[0061] Specifically, see Figure 1 As shown, the first distance can be set to d1, and the second distance can be set to d2. In this way, by adjusting the values of the first distance and the second distance, the leakage inductance of the transformer can be adjusted; of course, the ratio of the first distance to the sum of the two distances can also be adjusted, or the ratio of the second distance to the sum of the two distances can be adjusted. It should be noted that no specific limitation is made in this embodiment.

[0062] In addition, taking the first edge 211 as the first reference edge is conducive to improving the accuracy of judgment.

[0063] In a feasible implementation manner, see Figure 1 As shown, there is a spacing between the edge 210 on the side of the original edge skeleton 100 close to the first reference edge and the first reference edge. Such a setting can reserve the assembly space for the second magnetic core 400 and ensure the assembly stability of the second magnetic core 400, thereby ensuring the accuracy of judgment to the greatest extent.

[0064] Specifically, the distance between the edge 210 on the side of the original edge skeleton 100 close to the first reference edge and the first reference edge can be set to B, and the spacing can be not less than 1 mm. Exemplarily, the spacing can be 1 mm, 5 mm, 8 mm, etc. No further limitation is made in this embodiment.

[0065] In a feasible implementation manner, continue to see Figure 1 and Figure 2 As shown, the edge 210 includes a second edge 212. The second edge 212 is connected to the first edge 211. Among them, see Figure 1 As shown, the second edge 212 forms another edge of the secondary edge skeleton 200.

[0066] Specifically, in this embodiment, the extending direction of the first edge 211 is perpendicularly connected to the extending direction of the second edge 212; the second edge 212 serves as the second reference edge. The distance from the edge 210 on the side of the first magnetic core 300 close to the second reference edge to the second reference edge is the third distance, and the distance from the edge 210 on the side of the second magnetic core 400 close to the second reference edge to the second reference edge is the fourth distance; and both the third distance and the fourth distance are adjustable.

[0067] See specifically Figure 1 As shown, the third distance can be set as d3, and the fourth distance can be set as d4. In this way, by adjusting the values of the third distance and the fourth distance, the leakage inductance of the transformer can be adjusted. Of course, the ratio of the third distance to the sum of the two distances can also be adjusted, or the ratio of the fourth distance to the sum of the two distances can be adjusted. It should be noted that no specific limitation is made in this embodiment.

[0068] In addition, taking the second edge 212 as the second reference edge can also maximize the accuracy of judgment.

[0069] In a realizable manner, a primary side slot for incoming wire and a primary side slot for outgoing wire can be provided on the primary side skeleton 100. The primary side slot for incoming wire and the primary side slot for outgoing wire are opened at different positions on the primary side skeleton 100. At least part of the primary side winding 600 is wound around the primary side skeleton 100. Such a setting makes it possible that the primary side winding 600 will not be wound together during winding, ensuring the safety and stability of the primary side winding 600, and thus improving the safety performance of the transformer.

[0070] Specifically in implementation, one end of the primary side winding 600 passes through the primary side slot for outgoing wire and is electrically connected to the secondary side winding 700. The other end of the primary side winding 600 passes through the primary side slot for incoming wire and is electrically connected to the primary side skeleton 100, thereby realizing the electrical connection between the primary side skeleton 100 and the secondary side skeleton 200.

[0071] In a realizable manner, a secondary side slot for incoming wire and a secondary side slot for outgoing wire can be provided on the secondary side skeleton 200. The secondary side slot for incoming wire and the secondary side slot for outgoing wire are opened at different positions on the secondary side skeleton 200. At least part of the secondary side winding 700 is wound around the secondary side skeleton 200. Such a setting makes it possible that the secondary side winding 700 will not be wound together during winding, ensuring the safety and stability of the secondary side winding 700, and thus improving the safety performance of the transformer.

[0072] Specifically in implementation, one end of the secondary side winding 700 passes through the secondary side slot for outgoing wire and is electrically connected to the primary side winding 600. The other end of the secondary side winding 700 passes through the secondary side slot for incoming wire and is electrically connected to the secondary side skeleton 200, thereby realizing the electrical connection between the primary side winding 600 and the secondary side winding 700.

[0073] In a realizable manner, see Figure 4 As shown, it can further include a base 800. A first mounting portion is provided on the base 800, and the secondary side skeleton 200 is connected to the base 800 through the first mounting portion.

[0074] A second mounting portion is opened on the secondary side skeleton 200. The second mounting portion is located in the cavity 500, and the primary side skeleton 100 is connected to the secondary side skeleton 200 through the second mounting portion.

[0075] By providing the base 800, it is convenient for assembling the secondary side framework 200, and the base 800 can be a flat plate member, which can improve the stability of assembly. By providing the first mounting portion, it is convenient to connect the secondary side framework 200 to the base 800 and can improve the connection stability of the secondary side framework 200.

[0076] Similarly, by providing the second mounting portion, it is convenient to connect the primary side framework 100 to the secondary side framework 200 and can improve the connection stability between the primary side framework 100 and the secondary side framework 200.

[0077] It should be noted that the structure, specific shape, quantity, etc. of the first mounting portion and the second mounting portion are not limited. For example, it can be a snap connection, a threaded connection or other connection methods.

[0078] In addition, in this embodiment, a sliding groove can be provided on one of the base 800 and the secondary side framework 200, and a sliding block can be provided on the other of the base 800 and the secondary side framework 200. The sliding block and the sliding groove are correspondingly arranged, and the sliding block can slide reciprocally in the sliding groove.

[0079] During the working process, a driving member can also be included. The driving member is arranged between the base 800 and the secondary side framework 200 and is configured to drive the sliding block to slide in the sliding groove so as to adjust the primary side framework 100, the secondary side framework 200, the first magnetic core 300 and the second magnetic core 400 to preset positions, which is convenient for the user to operate and helps to improve the user experience.

[0080] In a realizable manner, a connecting component can also be included. The connecting component includes a connecting piece and a connecting hole. One of the connecting piece and the connecting hole can be provided on the primary side framework 100, and the other of the connecting piece and the connecting hole can be provided on the first magnetic core 300. The connecting piece and the connecting hole are correspondingly arranged, and the connecting piece is assembled in the connecting hole. By providing the connecting component, the connection between the primary side framework 100 and the first magnetic core 300 can be realized, thereby improving the stability of assembly.

[0081] Similarly, one of the connecting piece and the connecting hole can be provided on the secondary side framework 200, and the other of the connecting piece and the connecting hole can be provided on the first magnetic core 300 or the second magnetic core 400. In this way, the connection between the secondary side framework 200 and the first magnetic core 300 or the second magnetic core 400 can be realized, thereby improving the stability of assembly.

[0082] Embodiment 2

[0083] Based on the above-mentioned first embodiment, the second embodiment of the present application further provides an electronic device, which includes a device body and the above-mentioned transformer. The transformer is located in the device body. Herein, the device body in this embodiment can be a housing.

[0084] It should be noted that in this embodiment, the specific type of the electronic device is not limited. Since the transformer is a basic device for power transmission and distribution, the transformer can be applied in different fields. For example: it can be applied in electronic devices in the industrial field, electronic devices in the agricultural field, electronic devices in the transportation field, etc.

[0085] Other technical features are the same as those in the first embodiment and can achieve the same technical effects, which will not be elaborated one by one here.

[0086] For the electronic device provided by the embodiment of the present application, by setting the first magnetic core 300 and the second magnetic core 400 and arranging the first magnetic core 300 and the second magnetic core 400 at intervals, in this way, by adjusting the distance between the first magnetic core 300 from the reference edge and the distance value of the second magnetic core 400 from the reference edge, the leakage inductance of the transformer can be adjusted; in addition, by setting the primary skeleton 100 and the secondary skeleton 200, in this way, by adjusting the distance between the primary skeleton 100 from the reference edge, the leakage inductance of the transformer can also be adjusted; in addition, by sleeving the primary skeleton 100 outside the first magnetic core 300 and sleeving the secondary skeleton 200 outside the primary skeleton 100, the above settings make the primary skeleton 100 only sleeve the first magnetic core 300, and the secondary skeleton 200 sleeves the first magnetic core 300 and the second magnetic core 400. In this way, the leakage inductance of the transformer can also be adjusted by adjusting the area ratio of the first magnetic core 300 and the second magnetic core 400.

[0087] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "top end", "bottom end", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated position or component must have a specific orientation, be constructed and operated in a specific manner, and therefore cannot be understood as a limitation to the present application.

[0088] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0089] In this application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, which may be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0090] In this application, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A transformer, characterized in that, It includes a primary-side skeleton, a secondary-side skeleton, a first magnetic core, and a second magnetic core. The second magnetic core is arranged at an interval from the first magnetic core, and the primary-side skeleton is sleeved outside the first magnetic core; The secondary-side skeleton is sleeved outside the primary-side skeleton. A cavity is formed between the secondary-side skeleton and the primary-side skeleton. The second magnetic core is located in the cavity, and at least part of the primary-side skeleton is located between the first magnetic core and the second magnetic core; The secondary-side skeleton has an edge, which serves as a reference edge. The distance between the primary-side skeleton and the reference edge, the distance between the first magnetic core and the reference edge, and the distance between the second magnetic core and the reference edge are all adjustable.

2. The transformer according to claim 1, characterized in that, It further includes a primary-side winding and a secondary-side winding. The primary-side winding is wound around the primary-side skeleton, and the secondary-side winding is wound around the secondary-side skeleton. The primary-side winding and the secondary-side winding are electrically connected.

3. The transformer according to claim 2, characterized in that, The primary-side skeleton is a cylindrical part, and / or the secondary-side skeleton is a cylindrical part; The edge includes a first edge, and the first edge serves as a first reference edge; The primary-side skeleton has a skeleton center. The distance from the edge of the primary-side skeleton on the side close to the first reference edge to the skeleton center is a first distance. The distance from one edge of the secondary-side skeleton to the skeleton center is a second distance. The first edge forms one edge of the secondary-side skeleton; And both the first distance and the second distance are adjustable.

4. The transformer according to claim 3, characterized in that, There is a spacing between the edge of the primary-side skeleton on the side close to the first reference edge and the first reference edge; The spacing is not less than 1 mm.

5. The transformer according to claim 4, characterized in that, The edge includes a second edge, and the second edge is connected to the first edge. The second edge forms another edge of the secondary-side skeleton; The second edge serves as a second reference edge. The distance from the edge of the first magnetic core on the side close to the second reference edge to the second reference edge is a third distance. The distance from the edge of the second magnetic core on the side close to the second reference edge to the second reference edge is a fourth distance; And both the third distance and the fourth distance are adjustable.

6. The transformer according to any one of claims 2-5, characterized in that, The primary-side skeleton is provided with a primary-side wire inlet groove and a primary-side wire outlet groove. The primary-side wire inlet groove and the primary-side wire outlet groove are opened at different positions on the primary-side skeleton. At least part of the primary-side winding is wound around the primary-side skeleton; One end of the primary-side winding passes through the primary-side wire outlet groove and is electrically connected to the secondary-side winding. The other end of the primary-side winding passes through the primary-side wire inlet groove and is electrically connected to the primary-side skeleton.

7. The transformer according to claim 6, wherein, The secondary-side skeleton is provided with a secondary-side wire inlet groove and a secondary-side wire outlet groove. The secondary-side wire inlet groove and the secondary-side wire outlet groove are opened at different positions on the secondary-side skeleton. At least part of the secondary-side winding is wound around the secondary-side skeleton; One end of the secondary-side winding passes through the secondary-side wire outlet groove and is electrically connected to the primary-side winding. The other end of the secondary-side winding passes through the secondary-side wire inlet groove and is electrically connected to the secondary-side skeleton.

8. The transformer according to any one of claims 1-5, characterized in that, It further includes a base. The base is provided with a first mounting part. The secondary-side skeleton is connected to the base through the first mounting part; And / or, a second mounting portion is formed on the secondary side skeleton, the second mounting portion is located in the cavity, and the primary side skeleton is connected to the secondary side skeleton through the second mounting portion; A sliding groove is provided on one of the base and the secondary side skeleton, a sliding block is provided on the other of the base and the secondary side skeleton, the sliding block and the sliding groove are correspondingly arranged, and the sliding block can reciprocate in the sliding groove; The device further includes a driving member, the driving member is arranged between the base and the secondary side skeleton, and the driving member is configured to drive the sliding block to slide in the sliding groove so as to adjust the primary side skeleton, the secondary side skeleton, the first magnetic core and the second magnetic core to a preset position.

9. The transformer according to any one of claims 1-5, characterized in that, The device further includes a connecting component, and the connecting component includes a connecting member and a connecting hole; One of the connecting member and the connecting hole is arranged on the primary side skeleton, and the other of the connecting member and the connecting hole is arranged on the first magnetic core; And / or, one of the connecting member and the connecting hole is arranged on the secondary side skeleton, and the other of the connecting member and the connecting hole is arranged on the first magnetic core and / or the second magnetic core; The connecting member and the connecting hole are correspondingly arranged, and the connecting member is assembled in the connecting hole.

10. An electronic device, characterized in that, The device includes a device body and a transformer according to any one of claims 1-9, and the transformer is arranged in the device body; The transformer is electrically connected to the device body.

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