Resonant transformer with stable leakage inductance
By opening multiple ring wire grooves and coils on the skeleton winding of the transformer, combined with the barrier barrier coil and pins, solve the problem of unstable leakage and safety hazards of conventional small volume transformers, and realize the stability of the leakage feeling. And security and meet the low height requirements of high -power products.
Patent Information
- Application Number
- CN202411682826.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-01-28
AI Technical Summary
Conventional small-volume transformers are difficult to ensure stable leakage inductance, and the spacing between the internal coil and the pin is small, which makes it easy to have safety hazards such as short circuits.
Design a kind of leakage and stable resonance transformer. By opening multiple ring wire grooves on the winding of the skeleton, and setting a coil in each ring tank to increase the leakage stability; at the same time Set the partition board, block the coil and pins, and prevent short circuit.
The stability and safety of the leakage are achieved, and the short -circuit connection between the coil and the pin is avoided, and at the same time meet the requirements of low height of high -power products, and reduce costs.
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Figure CN119381132A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of transformers, and in particular to a leakage inductance stable resonant transformer. Background Art
[0002] The leakage inductance of a transformer refers to the inductance generated by the part of the magnetic flux that is lost during the coupling process between the primary and secondary coils of the transformer. In a transformer, leakage inductance is caused by the incomplete coupling between the primary and secondary coils, which results in a part of the magnetic flux not passing through the secondary coil, thus generating leakage inductance.
[0003] With the development of electric power supply technology, transformer technology is constantly updated and iterated, the overall requirements for power supply are constantly increasing, and at the same time, the volume requirements for transformers are getting smaller and smaller.
[0004] However, it is difficult for conventional small-volume transformers to ensure the stability of the leakage inductance of the product, and the distance between the internal coil and the pin is small, which is prone to safety hazards such as short circuits. Summary of the invention
[0005] Based on this, it is necessary to provide a leakage inductance stable resonant transformer.
[0006] The technical solution of the present invention to solve the above technical problems is as follows: a leakage inductance stable resonant transformer, comprising: a skeleton, a coil, two magnetic cores and a plurality of pins; the skeleton has a winding part and four mounting parts, and the four mounting parts are respectively connected to the winding part; the winding part is provided with a plurality of annular wire grooves in the horizontal direction, and the winding part is provided with a through hole in the vertical direction, and the horizontal direction and the vertical direction are perpendicular to each other; the coil is respectively wound in each of the annular wire grooves; the cross-sectional shape of each of the magnetic cores is "E"-shaped, and each of the magnetic cores has a first extension part, a second extension part, a third extension part and a connecting part, the first extension part, the second extension part and the extension part are sequentially arranged on the connecting part at intervals, the two magnetic cores are arranged on both sides of the longitudinal direction of the skeleton, and the second extension parts of the two magnetic cores respectively pass through the through hole from both sides of the through hole and then abut; each of the pins is respectively arranged on the four mounting parts, and the number of pins on each mounting part is equal; a partition plate is arranged between the winding part and the mounting part.
[0007] In one embodiment, the first extension portion, the second extension portion, and the third extension portion are equidistantly spaced apart on the connecting portion.
[0008] In one embodiment, ends of the first extension portion, the second extension portion, and the third extension portion away from the connecting portion are flush.
[0009] In one embodiment, the thicknesses of the first extension portion and the third extension portion are equal, and the thickness of the second extension portion is greater than the thicknesses of the first extension portion and the second extension portion.
[0010] In one embodiment, three annular wire grooves are provided.
[0011] In one embodiment, the widths of the annular wire grooves are equal.
[0012] In one embodiment, a connecting groove is provided on the partition plate.
[0013] In one embodiment, a first groove is formed on an end of the mounting portion which is away from the partition plate in the longitudinal direction.
[0014] In one embodiment, a second groove is formed on an end of the mounting portion that is laterally away from the partition plate.
[0015] In one embodiment, an identification block is provided on the skeleton.
[0016] The beneficial effects of the present invention are as follows: a leakage inductance stable resonant transformer provided by the present invention has a plurality of annular wire grooves formed on the winding portion of the skeleton, and a coil is provided in each annular wire groove, so that the leakage inductance of the leakage inductance stable resonant transformer can be increased and the leakage inductance can be made more stable. By providing a partition plate between the winding portion and the mounting portion of the skeleton, the coil and the pin can be effectively blocked to prevent a short circuit connection between the coil and the pin. At the same time, the overall flat design of the leakage inductance stable resonant transformer can meet the low height requirements of high-power products. The multi-slot design of the leakage inductance stable resonant transformer can meet the safety regulations without lengthening the mounting portion. The two magnetic cores on the leakage inductance stable resonant transformer use thickened magnetic cores, which can achieve high power while reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 A schematic diagram of the three-dimensional structure of a leakage inductance stabilized resonant transformer according to an embodiment;
[0019] Figure 2 FIG. 1 is a schematic diagram of a three-dimensional exploded structure of a leakage inductance stabilized resonant transformer according to an embodiment.
[0020] In the accompanying drawings, 10, leakage inductance stabilized resonant transformer; 100, skeleton; 110, winding part; 111, annular wire groove; 112, through hole; 120, mounting part; 121, first groove; 122, second groove; 130, partition plate; 131, connecting groove; 200, coil; 300, magnetic core; 310, first extension part; 320, second extension part; 330, third extension part; 340, connecting part; 400, pin; 500, identification block; 600, insulating tape. DETAILED DESCRIPTION
[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.
[0022] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present invention, it should be understood that if the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0023] In one embodiment, Figure 1 and Figure 2As shown, a leakage inductance stable resonant transformer 10 comprises: a skeleton 100, a coil 200, two magnetic cores 300 and a plurality of pins 400; the skeleton 100 has a winding portion 110 and four mounting portions 120, and the four mounting portions 120 are respectively connected to the winding portion 110; the winding portion 110 is provided with a plurality of annular wire grooves 111 in the horizontal direction, and the winding portion 110 is provided with a through hole 112 in the vertical direction, and the horizontal direction is perpendicular to the vertical direction; the coil 200 is respectively wound in each of the annular wire grooves 111; the cross-sectional shape of each of the magnetic cores 300 is an "E" shape, and each of the magnetic cores 300 has a first extension The first extension part 310, the second extension part 320, the third extension part 330 and the connecting part 340, the first extension part 310, the second extension part 320 and the extension part are arranged on the connecting part 340 in sequence, the two magnetic cores 300 are arranged on the two longitudinal sides of the skeleton 100, and the second extension parts 320 of the two magnetic cores 300 pass through the through hole 112 from both sides of the through hole 112 respectively and then abut against each other; each of the pins 400 is respectively arranged on the four mounting parts 120, and the number of the pins 400 on each mounting part 120 is equal; a partition plate 130 is arranged between the winding part 110 and the mounting part 120.
[0024] Specifically, by opening a plurality of annular wire grooves 111 on the winding portion 110 of the skeleton 100, the coil 200 is arranged in each of the annular wire grooves 111, so that the leakage inductance of the leakage inductance stable resonant transformer 10 can be increased and the leakage inductance can be made more stable. By arranging the partition plate 130 between the winding portion 110 and the mounting portion 120 of the skeleton 100, the coil 200 and the pin 400 can be effectively blocked to prevent a short circuit connection between the coil 200 and the pin 400. At the same time, the overall flat design of the leakage inductance stable resonant transformer 10 can meet the low height requirements of high-power products. With the multi-slot design of the leakage inductance stable resonant transformer 10, the mounting portion 120 does not need to be lengthened to meet the safety regulations. The two magnetic cores 300 on the leakage inductance stable resonant transformer 10 use thickened magnetic cores 300, which achieves high power while reducing costs.
[0025] In order to avoid the short circuit between the coil 200 and the pin 400, in one embodiment, Figure 1 and Figure 2 As shown, the length of the partition plate 130 is greater than or equal to the length of the pin 400 provided on the mounting portion 120. Specifically, by setting the length of the partition plate 130 to be greater than or equal to the length of the pin 400, the short circuit between the pin 400 and the coil 200 can be effectively avoided.
[0026] In one embodiment, Figure 1 and Figure 2 As shown, the cross-section of the partition plate 130 is in the shape of a "7". Specifically, the outer corner of the partition plate 130 is connected to the winding part 110, and the partition plate 130 is arranged to half surround the mounting block. Through the above arrangement, the coil 200 can be separated from both sides of the pin 400, thereby effectively avoiding the short circuit between the pin 400 and the coil 200.
[0027] In order to ensure that the magnetic field of the magnetic core 300 is evenly distributed, in one embodiment, Figure 2 As shown, the first extension portion 310, the second extension portion 320 and the third extension portion are equidistantly arranged on the connecting portion 340. Specifically, the distance between the first extension portion 310 and the second extension portion 320 is equal to the distance between the third extension portion 330 and the second extension portion 320. By configuring the magnetic core 300 in this way, the magnetic field of the magnetic core 300 can be evenly distributed.
[0028] In order to better connect the two magnetic cores 300, in one embodiment, Figure 2 As shown, the ends of the first extension portion 310, the second extension portion 320 and the third extension portion 330 away from the connecting portion 340 are flush. Specifically, when two magnetic cores 300 are connected, the first extension portion 310 of one magnetic core 300 abuts against the third extension portion 330 of the other magnetic core 300, the second extension portion 320 of one magnetic core 300 abuts against the second extension portion 320 of the other magnetic core 300, and the third extension portion 330 of one magnetic core 300 abuts against the first extension portion 310 of the other magnetic core 300. Through the above arrangement, the two magnetic cores 300 can be aligned and connected.
[0029] In order to make the leakage inductance-stabilized resonant transformer have a more stable leakage inductance effect, in one embodiment, Figure 2 As shown, the thickness of the first extension portion 310 and the third extension portion 330 are equal, and the thickness of the second extension portion 320 is greater than the thickness of the first extension portion 310 and the second extension portion 320. Specifically, by setting the thickness of the second extension portion 320 of the magnetic core 300 to be thicker, the magnetic field strength in the middle of the magnetic core 300 is greater than the magnetic field strength on both sides of the magnetic core 300, and this setting can make the resonance transformer with stable leakage inductance have a more stable leakage inductance effect.
[0030] In one embodiment, the thickness of the first extension portion 310 and the third extension portion 330 are equal, and the ratio of the thickness of the first extension portion 310 to the thickness of the second extension portion 320 is 1:2. Specifically, the thickness of the second extension portion 320 is twice the thickness of the first extension portion 310. Through the above arrangement, the leakage inductance of the leakage inductance-stabilized resonant transformer 10 can be effectively reduced and its leakage inductance can be more stable.
[0031] In one embodiment, Figure 1 and Figure 2 As shown, three annular wire grooves 111 are provided. Specifically, two adjacent annular wire grooves 111 are separated by a partition, and the partition is used to separate the coils 200 in the two annular wire grooves 111 to play an insulating role. The coils 200 are arranged in the three annular wire grooves 111. By providing three annular wire grooves 111, the primary and secondary winding coils 200 and the winding coils 200 of each level of the resonance transformer with stable leakage inductance can be effectively separated, thereby strengthening the insulation performance between them, ensuring that the current flows in a predetermined path, and preventing current leakage or short circuit.
[0032] In one embodiment, Figure 1 and Figure 2 As shown, the width of each of the annular wire grooves 111 is equal. Specifically, the width of each of the annular wire grooves 111 is set to be the same, so that the width of the coil 200 wound into each of the annular wire grooves 111 is also equal. Through the above-mentioned setting, the equal width of each of the annular wire grooves 111 helps to achieve standardized production of transformers and reduce manufacturing difficulty and cost. At the same time, the annular wire grooves 111 with the same width make the winding of the coil 200 easier and more uniform, which is conducive to improving the efficiency and quality of winding. The equal width of each of the annular wire grooves 111 can ensure that the distribution of the coil 200 in the transformer is more uniform, thereby avoiding the local imbalance of electromagnetic performance. The moderate and consistent width of each of the annular wire grooves 111 can reduce the mutual influence of the leakage magnetic field between adjacent windings, thereby reducing the noise during the operation of the transformer. The annular wire grooves 111 with the same width help to achieve uniform distribution and dissipation of heat, thereby improving the heat dissipation performance of the resonant transformer with stable leakage inductance. Good heat dissipation performance can effectively reduce the temperature inside the resonant transformer with stable leakage inductance and extend its service life.
[0033] In one embodiment, Figure 1 and Figure 2As shown, in each of the annular wire slots 111, the coil 200 is wound at a right angle at the winding corner. Specifically, the cross-sectional shape of the coil 200 is rectangular, and the coil 200 is closely attached to the inner side wall of the annular wire slot 111 of the frame 100. This arrangement can effectively reduce the leakage inductance of the leakage inductance stable resonant transformer 10 and make its leakage inductance more stable.
[0034] In order to facilitate the coil 200 in the annular wire slot 111 to pass through the partition plate 130, in one embodiment, as shown in FIG. Figure 1 and Figure 2 As shown, a connection groove 131 is provided on the partition plate 130. Specifically, two connection grooves 131 are provided, and the two connection grooves 131 are respectively arranged corresponding to the first groove 121 and the second groove 122. Both of the two connection grooves 131 are used for the copper wire of the coil 200 to pass through, so as to facilitate the electrical connection between the copper wire of the coil 200 and the pin 400.
[0035] In one embodiment, Figure 1 and Figure 2 As shown, two pins 400 are respectively disposed on each of the mounting portions 120. Specifically, the two pins 400 are disposed with equal lengths, and one pin 400 is disposed near the first groove 121, and the other pin 400 is disposed near the second groove 122.
[0036] In order to facilitate the electrical connection between the coil 200 and one of the pins 400 on the mounting portion 120, in one embodiment, Figure 1 and Figure 2 As shown, the mounting portion 120 is provided with a first groove 121 at one end thereof which is longitudinally away from the partition plate 130. Specifically, the first groove 121 is used for passing the copper wire of the coil 200, so as to facilitate electrical connection between the copper wire of the coil 200 and one of the pins 400 on the mounting portion 120.
[0037] In order to facilitate the electrical connection between the coil 200 and another pin 400 on the mounting portion 120, in one embodiment, Figure 1 and Figure 2 As shown, the mounting portion 120 is provided with a second groove 122 at one end thereof which is laterally away from the partition plate 130. Specifically, the second groove 122 is used for passing the copper wire of the coil 200, so as to facilitate electrical connection between the copper wire of the coil 200 and another of the pins 400 on the mounting portion 120.
[0038] In one embodiment, Figure 1 and Figure 2As shown, the two magnetic cores 300 are wound with an insulating tape 600. Specifically, the insulating tape 600 is wound around the two magnetic cores 300, and the insulating tape 600 is used to fix the two magnetic cores 300 on the frame 100, and the insulating tape 600 also plays an insulating role.
[0039] In order to distinguish the polarities of the two ends of the leakage inductance stable resonant transformer 10, in one embodiment, as Figure 1 and Figure 2 As shown, an identification block 500 is provided on the skeleton 100. Specifically, the identification block 500 is provided on the partition plate 130. And the identification block 500 is provided at the end of the leakage inductance stabilized resonant transformer 10 close to the high potential pin 400, so as to facilitate the user to distinguish the high potential end and the low potential end of the leakage inductance stabilized resonant transformer 10.
[0040] Compared with the prior art, the present invention has at least the following advantages: by opening a plurality of annular wire grooves on the winding portion of the skeleton, a coil is arranged in each annular wire groove, so that the leakage inductance of the leakage inductance stable resonant transformer can be increased and the leakage inductance can be made more stable. By providing a partition plate between the winding portion and the mounting portion of the skeleton, the coil and the pin can be effectively blocked to prevent a short circuit connection between the coil and the pin. At the same time, the overall flat design of the leakage inductance stable resonant transformer can meet the low height requirements of high-power products. The multi-slot design of the leakage inductance stable resonant transformer does not require the mounting portion to be lengthened to meet safety regulations. The two magnetic cores on the leakage inductance stable resonant transformer use thickened magnetic cores, which can achieve high power while reducing costs.
[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.
Claims
1. A leakage inductance stabilized resonant transformer, characterized in that: include: The skeleton, the coil, two magnetic cores and several pins; The frame has a winding part and four mounting parts, and the four mounting parts are respectively connected to the winding part; The winding part is provided with a plurality of annular wire grooves in the horizontal direction, and a through hole is provided in the vertical direction, wherein the horizontal direction and the vertical direction are perpendicular to each other; The coil is wound in each of the annular wire slots; The cross-section of each magnetic core is in an "E" shape, and each magnetic core comprises a first extension portion, a second extension portion, a third extension portion and a connecting portion, wherein the first extension portion, the second extension portion and the extension portion are sequentially arranged on the connecting portion at intervals, and the two magnetic cores are arranged on both sides of the longitudinal direction of the skeleton, and the second extension portions of the two magnetic cores respectively pass through the through hole from both sides of the through hole and then abut against each other; Each of the pins is respectively arranged on the four mounting parts, and the number of pins on each mounting part is equal; A partition plate is provided between the winding portion and the mounting portion.
2. The leakage inductance stabilized resonant transformer according to claim 1, characterized in that: The first extension portion, the second extension portion, and the third extension portion are equidistantly arranged on the connecting portion.
3. The leakage inductance stabilized resonant transformer according to claim 1, characterized in that: Ends of the first extension portion, the second extension portion, and the third extension portion away from the connecting portion are flush.
4. The leakage inductance stabilized resonant transformer according to claim 1, characterized in that: The first extension portion and the third extension portion have the same thickness, and the second extension portion has a thickness greater than that of the first extension portion and the second extension portion.
5. The leakage inductance stabilized resonant transformer according to claim 1, characterized in that: The annular wire grooves are provided with three.
6. The leakage inductance stabilized resonant transformer according to claim 1, characterized in that: The widths of the annular wire grooves are equal.
7. The leakage inductance stabilized resonant transformer according to claim 1, characterized in that: The partition plate is provided with a connecting groove.
8. The leakage inductance stabilized resonant transformer according to claim 1, characterized in that: A first groove is formed on one end of the mounting portion which is away from the partition plate in the longitudinal direction.
9. The leakage inductance stabilized resonant transformer according to claim 1, characterized in that: A second groove is formed on one end of the mounting portion which is away from the partition plate in the transverse direction.
10. The leakage inductance stabilized resonant transformer according to any one of claims 1 to 9, characterized in that: An identification block is arranged on the frame.