High-efficiency multi-air-duct transformer

Abstract

The utility model discloses a high-efficiency multi-duct transformer, which relates to the technical field of transformers, and comprises a magnetic core upper cover and a magnetic core lower cover, a plurality of magnetic cores II are assembled between the magnetic core upper cover and the magnetic core lower cover, each two magnetic cores II are separated by insulation paper, coils are wound outside the plurality of magnetic cores II, and the coils are wound outside the magnetic cores II. The upper magnetic core cover and the lower magnetic core cover jointly form a plurality of air channels, and the air channels can conduct internal heat dissipation on the second magnetic cores and the coils in an all-around mode. According to the combined multi-air-duct transformer, an original integrated magnetic core structure is changed into a plurality of stackable magnetic core structures, so that the flexibility and the performance of the small transformer are remarkably improved. Specifically, the design breaks through the rigid constraint of the length of the magnetic core on the power of the transformer, the number of the magnetic cores is allowed to be flexibly increased or decreased according to actual requirements, the number of winding turns and the length of the coil are easily adjusted, and then accurate regulation and control of the power of the transformer are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a high-efficiency multi-duct transformer. Background Art

[0002] In the field of power electronics, small transformers, as key components for power conversion and transmission, are widely used in various electronic devices, such as automotive charging station power modules, bidirectional energy storage inverters, and portable inverter power electronics. Traditional small transformer designs often employ an integrated structure, where the magnetic core is directly fixed between the upper and lower housings to form a tightly connected unit. While this design simplifies the assembly process to a certain extent, its inherent limitations are becoming increasingly prominent, becoming a bottleneck restricting the performance improvement and cost control of small transformers.

[0003] First, in traditional designs, the length of the magnetic core directly determines the winding space for the coil, which in turn limits the number and length of coil turns. Since the number of coil turns is closely related to the transformer's inductance and power conversion efficiency, the fixed core length effectively limits the power adjustability of small transformers. With increasingly diverse market demands, this "one core, one power" design model clearly cannot meet the flexible transformer power requirements in different application scenarios.

[0004] Secondly, traditional production methods require cores of varying lengths and molds of corresponding sizes for small transformers with varying power requirements. This not only increases production line complexity and management difficulties but also significantly increases mold costs. With the acceleration of product upgrades, the rapid depreciation and reinvestment of molds further exacerbates production costs and reduces companies' market competitiveness. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a high-efficiency multi-duct transformer, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-efficiency multi-duct transformer, including a magnetic core upper cover and a magnetic core lower cover, a plurality of magnetic cores 2 are assembled between the magnetic core upper cover and the magnetic core lower cover, each magnetic core 2 is separated by insulating paper, and a coil is wound around the outside of the plurality of magnetic cores 2. The magnetic core upper cover and the magnetic core lower cover together form a plurality of ducts, and the plurality of ducts can dissipate internal heat for the plurality of magnetic cores 2 and coils in all directions.

[0007] Furthermore, the magnetic core upper cover and the magnetic core lower cover are symmetrically arranged, and both the magnetic core upper cover and the magnetic core lower cover include first vents arranged on the front and back sides, second vents opened at the ends, and third vents opened on both sides.

[0008] Furthermore, the two first ventilation openings, the second ventilation openings, and the third ventilation openings are all symmetrically arranged.

[0009] Furthermore, the interiors of the adjacent ends of the magnetic core upper cover and the magnetic core lower cover are connected to magnetic core 1, and the interiors of magnetic core 1, each magnetic core 2, and the insulating paper are all provided with through holes, which are connected to the second ventilation port.

[0010] Furthermore, the shape of the insulating paper matches the shape of the second magnetic core, and the through holes of the second magnetic core correspond to the through holes of the insulating paper.

[0011] Furthermore, the coil has a double-layer structure, the inner coil is wound around the outside of the plurality of second magnetic cores, and the outer coil is wound around the outside of the inner coil.

[0012] Furthermore, the third ventilation openings (13) opened by the magnetic core upper cover (1) and the magnetic core lower cover (2) are arranged on the outer side edges of the magnetic core upper cover (1) and the magnetic core lower cover (2).

[0013] Furthermore, the magnetic core upper cover (1) and the magnetic core lower cover (2) are provided with a third vent (13), the third vent (13) being arranged on the inner arc edge of the magnetic core upper cover (1) and the magnetic core lower cover (2), and the third vent (13) penetrating the surface of the magnetic core upper cover (1) and the magnetic core lower cover (2).

[0014] The utility model provides a high-efficiency multi-duct transformer. Compared with the existing technology, it has the following advantages:

[0015] This modular multi-duct transformer significantly improves the flexibility and performance of small transformers by replacing the original single-piece magnetic core structure with a stackable multiple core structure. Specifically, this design breaks the rigid constraint of core length on transformer power, allowing the number of cores to be flexibly increased or decreased according to actual needs, thereby easily adjusting the number of coil turns and length, thereby achieving precise control of transformer power. This move not only significantly reduces production costs and avoids the additional expenses associated with mold changes, but also enhances the product's market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the disassembly of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the magnetic core cover in the utility model from the first perspective;

[0018] Figure 3 This is a structural diagram of the magnetic core cover in the utility model from a second perspective;

[0019] Figure 4This is a schematic diagram of the assembly of the utility model;

[0020] Figure 5 This is a half-section view of the utility model after assembly;

[0021] Figure 6 This is a schematic diagram of the multi-air duct path of the utility model.

[0022] Figure 7 This is a schematic diagram of the explosion of the third vent in the second embodiment of the utility model.

[0023] Figure 8 This is a schematic diagram of the third vent structure of the second embodiment of the present utility model;

[0024] Figure 9 This is a cross-sectional view of the third vent in the second embodiment of the present invention.

[0025] In the figure: 1. Magnetic core upper cover; 11. First vent; 12. Second vent; 13. Third vent; 14. Magnetic core 1; 15. Through hole; 2. Magnetic core lower cover; 3. Magnetic core 2; 4. Insulation paper; 5. Coil. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-6 The utility model provides a technical solution: a high-efficiency multi-air duct transformer, which consists of a magnetic core upper cover 1, a magnetic core lower cover 2, multiple magnetic cores 3, multiple insulating papers 4 and a double-layer coil 5. After the magnetic core upper cover 1 and the magnetic core lower cover 2 are connected and fixed, a cavity is formed in the middle. Multiple magnetic cores 3 and multiple insulating papers 4 are alternately stacked in the cavity. The insulating paper 4 can prevent short circuits. The double-layer coil 5 is wound from the inside to the outside (the inner layer is wound around the outside of several magnetic cores 3, and the outer layer is wound around the outside of the inner layer). In addition, three-directional air ducts are set around the magnetic core upper cover 1 and the magnetic core lower cover 2. The airflow flowing into the three-directional air ducts can blow towards the working coils 5 and magnetic cores, thereby achieving the purpose of efficient heat dissipation. Specifically,

[0028] The first air duct is a first vent 11 provided on the front and back sides of the magnetic core upper cover 1 and the magnetic core lower cover 2. Air can enter and exit from the front or back side, passing through the coil 5 and the magnetic core for internal heat dissipation.

[0029] The second air duct is a second vent 12 provided at the ends of the magnetic core upper cover 1 and the magnetic core lower cover 2, as well as a through hole 15 provided inside the magnetic core 14 and each magnetic core 2 3 and the insulating paper 4. After the second vent 12 and the plurality of through holes 15 are connected, air can enter and exit from the ends of the magnetic core upper cover 1 or the magnetic core lower cover 2, and also pass through the coil 5 and the magnetic core for internal heat dissipation; Example 1

[0030] The third air duct is a third vent 13 provided on both sides of the outer portion of the magnetic core upper cover 1 and the magnetic core lower cover 2. Air can flow from the third vent 13 on one side to the third vent 13 on the other side, passing through the coil 5 and the magnetic core for internal heat dissipation.

[0031] In the above air duct structure, the direction of the air flow is not limited thereto. For example, the air flow may enter from the second vent 12 and exit from the third vent 13, or the air flow may enter from the third vent 13 and exit from the second vent 12. Example 2

[0032] Please read the patent Figure 7-9 As shown, the third vent 13 is opened on the magnetic core upper cover 1 and the magnetic core lower cover 2, and the third vent 13 is set on the inner arc edge of the magnetic core upper cover 1 and the magnetic core lower cover 2, and the third vent 13 passes through the surface of the magnetic core upper cover 1 and the magnetic core lower cover 2, so that there is no need to groove the outside of the magnetic core upper cover 1 and the magnetic core lower cover 2, and it is only necessary to punch holes on the inner side of the magnetic core upper cover 1 and the magnetic core lower cover 2, and the third vent 13 passes through the outer surface of the magnetic core upper cover 1 and the magnetic core lower cover 2, so as to achieve a ventilation effect.

[0033] Finally, the original integrated magnetic core structure is changed to a structure in which multiple magnetic cores 2 and 3 are stacked together. Compared with the previous structure, the advantage of this structure is that the power of the entire transformer is no longer constrained by the length of the integrated magnetic core. In other words, a corresponding number of magnetic cores 2 and 3 can be stacked according to demand. The more magnetic cores 2 and 3 are stacked, the greater the number of turns and length of the coil 5, thereby increasing the power of the entire transformer. Similarly, reducing the number of magnetic cores 2 and 3 can reduce the power of the transformer.

Claims

1. A high-efficiency multi-duct transformer, comprising a magnetic core upper cover (1) and a magnetic core lower cover (2), characterized in that: A plurality of magnetic cores (3) are assembled between the magnetic core upper cover (1) and the magnetic core lower cover (2), each magnetic core (3) is separated by insulating paper (4), and coils (5) are wound around the outside of the plurality of magnetic cores (3). The magnetic core upper cover (1) and the magnetic core lower cover (2) together form a plurality of air ducts, and the plurality of air ducts can dissipate internal heat for the plurality of magnetic cores (3) and coils (5) in all directions; The magnetic core upper cover (1) and the magnetic core lower cover (2) are symmetrically arranged, and both the magnetic core upper cover (1) and the magnetic core lower cover (2) comprise first ventilation openings (11) arranged on the front and back sides, second ventilation openings (12) opened at the ends, and third ventilation openings (13) opened on both sides.

2. A high-efficiency multi-duct transformer according to claim 1, characterized in that: The two first ventilation openings (11), the second ventilation opening (12), and the third ventilation opening (13) are all symmetrically arranged.

3. A high-efficiency multi-duct transformer according to claim 2, characterized in that: The interiors of the adjacent ends of the magnetic core upper cover (1) and the magnetic core lower cover (2) are both connected to a magnetic core 1 (14), and the interiors of the magnetic core 1 (14), each magnetic core 2 (3), and the insulating paper (4) are all provided with through holes (15), and the through holes (15) are in communication with the second vent (12).

4. The high-efficiency multi-duct transformer according to claim 3, characterized in that: The shape of the insulating paper (4) is adapted to the shape of the second magnetic core (3), and the through hole (15) of the second magnetic core (3) corresponds to the through hole (15) of the insulating paper (4).

5. The high-efficiency multi-duct transformer according to claim 1, characterized in that: The coil (5) is a double-layer structure, wherein the inner coil (5) is wound around the outside of a plurality of second magnetic cores (3), and the outer coil (5) is wound around the outside of the inner coil (5).

6. The high-efficiency multi-duct transformer according to claim 1, characterized in that: The third ventilation openings (13) opened on the magnetic core upper cover (1) and the magnetic core lower cover (2) are arranged on the outer side edges of the magnetic core upper cover (1) and the magnetic core lower cover (2).

7. The high-efficiency multi-duct transformer according to claim 1, characterized in that: The magnetic core upper cover (1) and the magnetic core lower cover (2) are provided with a third vent (13), the third vent (13) being arranged on the inner arc-shaped edges of the magnetic core upper cover (1) and the magnetic core lower cover (2), and the third vent (13) penetrating the surfaces of the magnetic core upper cover (1) and the magnetic core lower cover (2).

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