Magnetic integrated transformer
By optimizing the core and skeleton structure, integrating the coil and replacing traditional inductive components with leakage magnetic inductance, the heat dissipation and structural stability of traditional magnetic integrated transformers are solved, and the transformer is miniaturized and cost-reduced.
Patent Information
- Application Number
- CN202422288352.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-19
AI Technical Summary
Traditional magnetic integrated transformers have limitations in terms of insufficient heat dissipation performance, insufficient structural design, and excessive volume, which limits their performance improvement and expansion of their application scope.
Design a magnetic integrated transformer. By optimizing the core structure and skeleton structure, enhancing heat dissipation performance, and integrating two coils on the skeleton, adding magnetic blocks to generate leakage magnetic flux, using leakage magnetic inductance to replace traditional inductive components, and improving structural design to save circuit board space and reduce costs.
Improves heat dissipation performance, enhances structural stability, reduces transformer volume, saves circuit board space and reduces overall costs.
Smart Images
Figure CN223180938U_ABST
Abstract
Description
Technical Field
[0001] The utility model is applied to the field of power magnetic devices, and particularly relates to a magnetic integrated transformer. Background Art
[0002] In the field of power magnetic devices, as a key component, magnetic integrated transformers are widely used in various electronic devices, such as computer power supplies, communication power supplies, industrial control power supplies, etc. However, there are often some problems in the design of traditional magnetic integrated transformers, which limit the improvement of their performance and the expansion of their application scope. For example: 1. The traditional design has deficiencies in heat dissipation. With the increase in the power density of electronic devices, transformers generate a large amount of heat during operation, directly affecting the service life and reliability of the transformers. 2. There are also certain limitations in the structural design and manufacturing process of traditional magnetic integrated transformers. The fixing method of the iron core and the skeleton may not be firm enough, and the winding method of the coil components may not be compact enough, both of which result in an overly large volume of the transformer. Based on the above problems, if a magnetic integrated transformer can be designed, with a simple structure, by optimizing the iron core structure, the skeleton structure, enhancing the heat dissipation performance, and improving the structural design, etc., integrating two coils on the skeleton, adding magnetic blocks to generate a leakage magnetic path, and using the leakage inductance as the "inductive element factor" of the integrated transformer to replace the additional inductive elements in the traditional solution, thereby achieving the goal of saving circuit board space and reducing the overall cost, then the above problems can be well solved. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a magnetic integrated transformer with a simple structure. By optimizing the iron core structure, the skeleton structure, enhancing the heat dissipation performance, and improving the structural design, etc., integrating two coils on the skeleton, adding magnetic blocks to generate a leakage magnetic path, and using the leakage inductance as the "inductive element factor" of the integrated transformer to replace the additional inductive elements in the traditional solution, thereby achieving the goal of saving circuit board space and reducing the overall cost.
[0004] The technical solution adopted by the present utility model is as follows: The present utility model includes a skeleton, a coil element, a pair of iron cores and a coil cover. The skeleton is axially provided with a through hole, and annular grooves are provided at both ends of the skeleton. The coil element is wound on the annular groove. A pair of the iron cores are respectively matched with the through hole. The coil cover is in limit cooperation with one end of the skeleton. A semi-circular groove is provided in the middle of the skeleton, and heat dissipation holes communicating with the through hole are provided on the top surface of the semi-circular groove. Pin bases are uniformly arranged on the bottom of the left and right sides of the skeleton. Thus, it can be seen that the skeleton plays a role in supporting and limiting the iron cores, the pin bases and the coil cover. The annular groove plays a role in supporting and limiting the coil element. The iron core passes through the through hole and cooperates with the coil element to form a closed-loop magnetic circuit, making the magnetic flux more concentrated. The heat dissipation holes on the semi-circular groove dissipate heat when the coil element is in cooperation, avoiding heat accumulation. The pin base plays a role in connecting with an external circuit board. The coil cover plays a role in insulating and isolating the coil element.
[0005] Further, a pair of the iron cores are E-shaped iron cores. A pair of the E-shaped iron cores are symmetrically arranged at both ends of the skeleton. The middle part of one E-shaped iron core passes through the through hole and is in contact and cooperation with the middle part of the other E-shaped iron core. The upper and lower protruding parts of one E-shaped iron core are in contact and cooperation with the upper and lower protruding parts of the other E-shaped iron core. A trapezoidal notch is provided at the bottom of the E-shaped iron core, and the trapezoidal notch is in limit cooperation with the skeleton.
[0006] Further, a pin element and a second guide post are provided on the pin base. The pin element is in limit cooperation with an external circuit board. The second guide post is in limit cooperation with the coil element.
[0007] Further, trapezoidal protrusions are provided at both ends of the skeleton. The E-shaped iron core is in limit cooperation with the skeleton through the trapezoidal protrusions.
[0008] Further, a first guide post is provided on one side of the skeleton, and an isolation protrusion is provided on the other side of the skeleton.
[0009] Further, a rectangular hole is formed when the upper and lower protruding parts of the E-shaped iron core cooperate with the semi-circular groove. A magnetic block is provided on the rectangular hole, and the magnetic block is in limit cooperation with the E-shaped iron core and the skeleton.
[0010] Further, a plurality of isolation grooves are provided between the annular groove of the skeleton far from the first guide post and the semi-circular groove. A plurality of the isolation grooves are all in limit cooperation with the coil cover.
[0011] Further, the groove pitch of the semi-circular groove is 6 mm to 8 mm, and the groove pitch of the isolation groove is 0.5 mm to 1.0 mm.
[0012] Further, insertion pieces are arranged on both sides inside the coil cover, and the insertion pieces are limited and matched on the isolation grooves through the trapezoidal convex blocks and the isolation convex blocks.
[0013] Further, reinforcing ribs are arranged on both the left and right sides inside the coil cover. Description of the Drawings
[0014] Figure 1 is the structural view of the present utility model;
[0015] Figure 2 is the exploded structural view of the present utility model;
[0016] Figure 3 is the exploded structural view of the skeleton and the coil cover;
[0017] Figure 4 is the structural view of the skeleton;
[0018] Figure 5 is the structural view of the coil cover;
[0019] Figure 6 is the structural view of the iron core. Detailed Embodiment
[0020] As Figure 1 to Figure 2 shown, in this embodiment, the present utility model includes a skeleton 1, a coil element, a pair of iron cores 2 and a coil cover 3. The skeleton 1 is axially provided with a through hole 10, and annular grooves 11 are provided at both ends of the skeleton 1. The coil element is wound on the annular grooves 11. A pair of the iron cores 2 are respectively matched with the through hole 10. The coil cover 3 is limited and matched with one end of the skeleton 1. A semi-circular groove 12 is provided in the middle of the skeleton 1. A heat dissipation hole 99 communicating with the through hole 10 is provided on the top surface of the semi-circular groove 12. Pin bases 4 are uniformly arranged at the bottoms of the left and right sides of the skeleton 1. It can be seen that the skeleton 1 plays a role in supporting and limiting the iron cores 2, the pin bases 4 and the coil cover 3. The annular grooves 11 play a role in supporting and limiting the coil element. The iron cores 2 pass through the through hole 10 and are matched with the coil element to form a closed-loop magnetic circuit, making the magnetic flux more concentrated. The heat dissipation holes 99 on the semi-circular groove 12 dissipate the heat generated by the iron cores 2 when the coil element is matched with the iron cores 2, avoiding heat accumulation. The pin bases 4 play a role in connecting with an external circuit board, and the coil cover 3 plays a role in insulating and isolating the coil element 5.
[0021] As Figure 1 , Figure 2 and Figure 6As shown, in this embodiment, a pair of the iron cores 2 are E-shaped iron cores. A pair of the E-shaped iron cores are symmetrically arranged at both ends of the bobbin 1. The middle part of one E-shaped iron core passes through the through hole 10 and is in contact and cooperation with the middle part of the other E-shaped iron core. The upper and lower extending parts of one E-shaped iron core are in contact and cooperation with the upper and lower extending parts of the other E-shaped iron core. A trapezoidal notch is provided at the bottom of the E-shaped iron core, and the trapezoidal notch is in limit cooperation with the bobbin 1. It can be seen that the iron core 2 is an E-shaped iron core. The middle of the E-shaped iron core passes through the through hole 10 on the bobbin 1. The iron core 2 forms a closed-loop magnetic circuit both inside and outside the coil element. At the same time, the mutual contact and cooperation of the upper and lower extending parts of the E-shaped iron core can make the magnetic flux more concentrated, which helps to enhance the transmission and storage of energy. Adding the iron core 2 can significantly reduce the magnetic flux leakage and make the magnetic field more concentrated. The E-shaped iron core plays a supporting role for the trapezoidal notch, and the trapezoidal notch plays a role in guiding and limiting the cooperation between the E-shaped iron core and the bobbin.
[0022] As Figure 3 and Figure 4 shown, in this embodiment, a pin element 40 and a second guide post 41 are arranged on the pin base 4. The pin element 40 is in limit cooperation with an external circuit board, and the second guide post 41 is in limit cooperation with the coil element. It can be seen that the pin base 4 plays a role in supporting and fixing the pin element 40 and the second guide post 41. The pin element 40 cooperates with the external circuit board and plays a role in connecting with the external circuit board. The second guide post 41 plays a role in winding and limiting the head end or the tail end of the coil element.
[0023] As Figure 3 and Figure 4 shown, in this embodiment, trapezoidal protrusions 13 are arranged at both ends of the bobbin 1. The E-shaped iron core is in limit cooperation with the bobbin 1 through the trapezoidal protrusions 13. It can be seen that the bobbin 1 plays a role in supporting and fixing the trapezoidal protrusions 13. The trapezoidal protrusions 13 play a role in guiding when the E-shaped iron core is in limit cooperation with the bobbin 1.
[0024] As Figure 3 and Figure 4 shown, in this embodiment, a first guide post 14 is arranged on one side of the bobbin 1, and an isolation protrusion 15 is arranged on the other side of the bobbin 1. It can be seen that the bobbin 1 plays a role in supporting and fixing the first guide post 14 and the isolation protrusion 15. The first guide post 14 plays a role in winding and limiting the head end or the tail end of the coil element. The isolation protrusion 15 plays a role in limiting and guiding when the insertion piece 30 cooperates with the isolation groove 16.
[0025] As Figure 4As shown in the figure, in this embodiment, when the upper and lower protruding parts of the E-shaped iron core are fitted with the semi-circular groove 12, a rectangular hole is formed. A magnetic block 5 is arranged on the rectangular hole, and the magnetic block 5 is in limit fit with the E-shaped iron core and the skeleton 1. It can be seen that the magnetic block 5 plays a role in generating available leakage magnetic flux and guiding the magnetic direction when the E-shaped iron core is fitted with the coil element, and uses the leakage magnetic inductance as one of the "inductive element factors" of the transformer to replace the additional inductive element in the traditional solution, thereby achieving the effect of saving circuit board space and reducing the comprehensive cost.
[0026] As Figure 3 shown in the figure, in this embodiment, a plurality of isolation grooves 16 are arranged between the annular groove 11 of the skeleton 1 away from the first guide post 14 and the semi-circular groove 12, and the plurality of isolation grooves 16 are all in limit fit with the coil cover 3. It can be seen that a plurality of isolation grooves 16 are arranged on the skeleton 1 to further increase the creepage distance and electrical clearance from the iron core 2 to the secondary winding, so as to meet the safety regulations and further improve the safety of the magnetic integrated transformer.
[0027] As Figure 1 and Figure 2 shown in the figure, in this embodiment, the groove pitch of the semi-circular groove 12 is 6 mm to 8 mm, and the groove pitch of the isolation groove 16 is 0.5 mm to 1.0 mm. It can be seen that in order to increase the creepage distance and electrical clearance from the iron core 2 to the secondary winding to more than 6 mm, so as to meet the 300V certification of safety regulations and further improve the safety of the magnetic integrated transformer.
[0028] As Figure 5 shown in the figure, in this embodiment, insertion pieces 30 are arranged on both sides inside the coil cover 3, and the insertion pieces 30 are in limit fit with the isolation grooves 16 through the trapezoidal convex blocks 13 and the isolation convex blocks 15. It can be seen that the coil cover 3 plays a role in supporting and limiting the insertion pieces 30, and both the trapezoidal convex blocks 13 and the isolation convex blocks 15 play a role in limiting and guiding when the insertion pieces 30 are fitted with the isolation grooves 16.
[0029] As Figure 5 shown in the figure, in this embodiment, reinforcing ribs 31 are arranged on both the left and right sides inside the coil cover 3. It can be seen that the coil cover 3 plays a role in supporting the reinforcing ribs 51, and the reinforcing ribs 51 play a role in the strength and rigidity of the coil cover 3, thereby reducing the material consumption and the production cost of the coil cover 3.
[0030] In this embodiment, the working principle of the present invention is as follows:
[0031] As Figure 1 to Figure 6As shown, the present embodiment is limited and fitted on the outer circuit board through the pin base 4. After the present embodiment is powered on, magnetism is generated inside the coil element. Magnetic guidance is carried out through the middle part of the iron core 2, and the magnetic lines of force extend up and down through the iron core 2 to form closed magnetic lines of force. In order to generate available leakage magnetic flux, the magnetic block 5 is placed in the bobbin 1 and the iron core 2 to strengthen the closure of the magnetic lines of force.
[0032] Although the embodiments of the present invention are described with actual solutions, they do not constitute a limitation on the meaning of the present invention. For those skilled in the art, modifications to its implementation solutions according to this specification and combinations with other solutions are obvious.
Claims
1. A magnetic integrated transformer, which comprises a bobbin (1) and a coil element. The bobbin (1) is axially provided with a through hole (10), and annular grooves (11) are provided at both ends of the bobbin (1). The coil element is wound on the annular grooves (11), and is characterized in that: A magnetic integrated transformer further includes a pair of iron cores (2) and a coil cover (3). The pair of iron cores (2) are respectively fitted with the through holes (10). The coil cover (3) is in limiting fit with one end of the skeleton (1). A semi-circular groove (12) is provided in the middle of the skeleton (1). A heat dissipation hole (99) communicating with the through hole (10) is provided on the top surface of the semi-circular groove (12). Pin bases (4) are uniformly arranged on the bottoms of the left and right sides of the skeleton (1).
2. A magnetic integrated transformer according to claim 1, wherein: The pair of iron cores (2) are E-shaped iron cores. The pair of E-shaped iron cores are symmetrically arranged at both ends of the skeleton (1). The middle part of one E-shaped iron core passes through the through hole (10) and is in contact fit with the middle part of the other E-shaped iron core. The upper and lower protruding parts of one E-shaped iron core are in contact fit with the upper and lower protruding parts of the other E-shaped iron core. A trapezoidal notch is provided at the bottom of the E-shaped iron core, and the trapezoidal notch is in limiting fit with the skeleton (1).
3. A magnetic integrated transformer according to claim 1, characterized in that: Pin elements (40) and second guide posts (41) are provided on the pin bases (4). The pin elements (40) are in limiting fit with an external circuit board, and the second guide posts (41) are in limiting fit with the coil elements.
4. A magnetic integrated transformer according to claim 2, wherein: Trapezoidal protrusions (13) are provided at both ends of the skeleton (1). The E-shaped iron cores are in limiting fit on the skeleton (1) through the trapezoidal protrusions (13).
5. A magnetic integrated transformer according to claim 4, wherein: A first guide post (14) is provided on one side of the skeleton (1), and an isolation protrusion (15) is provided on the other side of the skeleton (1).
6. The magnetically integrated transformer according to claim 5, characterized in that: When the upper and lower protruding parts of the E-shaped iron core are fitted with the semi-circular groove (12), a rectangular hole is formed. A magnetic block (5) is provided on the rectangular hole, and the magnetic block (5) is in limiting fit with the E-shaped iron core and the skeleton (1).
7. A magnetic integrated transformer according to claim 5, characterized in that: A plurality of isolation grooves (16) are provided between the annular groove (11) of the skeleton (1) far from the first guide post (14) and the semi-circular groove (12). The plurality of isolation grooves (16) are all in limiting fit with the coil cover (3).
8. A magnetic integrated transformer according to claim 7, characterized in that: The groove pitch of the semi-circular groove (12) is 6 mm to 8 mm, and the groove pitch of the isolation grooves (16) is 0.5 mm to 1.0 mm.
9. The magnetic integrated transformer according to claim 7, wherein: Insert pieces (30) are provided on both inner sides of the coil cover (3). The insert pieces (30) are in limiting fit on the isolation grooves (16) through the trapezoidal protrusions (13) and the isolation protrusions (15).
10. A magnetic integrated transformer according to claim 7, characterized in that: Reinforcing ribs (31) are provided on both the left and right inner sides of the coil cover (3).