Integrated high-power transformer for photovoltaic new energy

Abstract

An integrated high-power transformer for photovoltaic new energy relates to the technical field of transformers, and adopts the technical scheme that the integrated high-power transformer comprises a framework, a magnetic core and a winding, the framework is provided with an inner limiting plate and an outer limiting plate, the inner limiting plate, the outer limiting plate and the framework define a magnetic core mounting groove, and the framework, the inner limiting plate and the outer limiting plate are insulated; the magnetic core is provided with a window, the magnetic core is arranged in the magnetic core mounting groove, and the axial direction of the magnetic core is perpendicular to the upper surface of the framework; the winding comprises a primary winding and at least one single-turn secondary winding, the primary winding penetrates through the window to be wound on the magnetic core, the single-turn secondary winding is in an inverted U shape, one end of the single-turn secondary winding is arranged on the side, away from the magnetic core, of the inner limiting plate, and the other end of the single-turn secondary winding is arranged on the side, away from the magnetic core, of the outer limiting plate. The power supply has the advantages of high output power and small volume, and is more favorable for automatic production.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an integrated high-power transformer for photovoltaic new energy. Background Art

[0002] The photovoltaic new energy industry is developing faster and faster, and the requirements for components are getting higher and higher. High current, high power output, high reliability, and small size have become the development trend of the electronic component industry. The existing typical transformers can achieve relatively low power, generally around a few hundred watts. In order to meet the same output effect, the existing technology requires a large number of devices, a large volume for installation, complex installation steps, and poor heat dissipation of the product. In order to solve the above problems, the patent with publication number CN211507362U discloses an integrated high-power toroidal transformer, which increases the output power and reduces the volume, but there are still problems such as complex processing technology, many winding and assembly processes, and unsuitability for automated processing. Utility Model Content

[0003] In view of the problems in the existing technical solutions such as complex processing technology, many winding and assembly processes, and unsuitability for automated processing, the utility model provides an integrated high-power transformer for photovoltaic new energy.

[0004] The utility model provides the following technical solution: an integrated high-power transformer for photovoltaic new energy, comprising:

[0005] A frame, wherein the frame is provided with an inner limit plate and an outer limit plate, wherein the inner limit plate, the outer limit plate and the frame form a magnetic core installation slot, and the frame, the inner limit plate and the outer limit plate are all insulated;

[0006] A magnetic core, wherein the magnetic core is provided with a window, the magnetic core is arranged in the magnetic core installation groove, and the axial direction of the magnetic core is perpendicular to the upper surface of the skeleton;

[0007] The winding comprises a primary winding and at least one single-turn secondary winding, the primary winding passes through the window and is wound around the magnetic core, the single-turn secondary winding is an inverted U-shape, one end of the single-turn secondary winding is arranged on the side of the inner limit plate away from the magnetic core, and the other end is arranged on the side of the outer limit plate away from the magnetic core.

[0008] Preferably, the inner limiting plate, the outer limiting plate and the magnetic core are all annular.

[0009] The integrated high-power transformer for photovoltaic new energy according to claim 1 is characterized in that the manufacturing material of the magnetic core is cobalt-based amorphous material Co2714A.

[0010] Preferably, a plurality of primary winding pins are further provided on one side of the frame, and a wire notch is provided on the side of the outer limiting plate facing the primary winding pins.

[0011] Preferably, the single-turn secondary winding comprises two secondary winding pins and a connecting portion arranged between the two secondary winding pins, the secondary winding pins are provided with a limiting groove, and the connecting portion is provided with a plug connector plugged into the limiting groove.

[0012] Preferably, the secondary winding pin has the same cross-section as the connecting portion.

[0013] Preferably, the secondary winding pins are plugged into the frame.

[0014] Preferably, an insulating partition is further provided on the side of the inner limit plate facing away from the magnetic core, and the insulating partition is provided between each of the plurality of secondary winding pins.

[0015] The beneficial effects of the utility model are: under the premise of ensuring high power output, the installation method of the magnetic core on the frame is changed, the transformer is flattened to reduce the volume, and the magnetic core is positioned by internal and external limit plates, the structure of the secondary winding is optimized, the processing and assembly of each component are convenient, and it is more conducive to automated production; protective measures such as insulating partitions and internal and external limit plates also improve the safety of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional schematic diagram of an embodiment of a transformer.

[0017] Figure 2 A top view of an embodiment of a transformer.

[0018] Figure 3 A side view of an embodiment of a transformer.

[0019] Figure numerals: 10, frame; 11, inner limit plate; 12, outer limit plate; 121, wire gap; 13, insulating partition; 20, magnetic core; 31, single-turn secondary winding; 311, secondary winding pin; 312, connecting part; 32, primary winding pin. DETAILED DESCRIPTION

[0020] The following is a more detailed description of the implementation of the utility model in conjunction with the drawings and the figure marks, so that those skilled in the art can implement it after reading this specification. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0021] The utility model provides Figure 1-3An integrated high-power transformer for photovoltaic new energy shown in the figure comprises a frame 10 , a magnetic core 20 arranged on the frame 10 , and a winding surrounding the magnetic core 20 .

[0022] The skeleton 10 is provided with an inner limit plate 11 and an outer limit plate 12, and the skeleton 10, the inner limit plate 11, and the outer limit plate 12 are all insulated. The inner limit plate and the outer limit plate can be in a ring, a square frame, or other structures, and the utility model does not limit this; in this embodiment, the inner limit plate and the outer limit plate are both in a ring shape. The inner limit plate 11, the outer limit plate 12, and the skeleton 10 form a magnetic core installation groove, which is convenient for positioning the magnetic core and facilitating assembly.

[0023] The magnetic core 20 is provided with a window; the utility model does not limit the shape of the magnetic core, and any ring, square frame or other form with a window structure can be adopted; in this embodiment, the magnetic core 20 adopts a ring structure. Figure 2 The magnetic core 20 is arranged in the magnetic core installation groove, and the axial direction x1 of the magnetic core 20 is perpendicular to the upper surface of the skeleton 10, so that the magnetic core is placed flat on the skeleton, the transformer is flattened, and the height is reduced compared with the prior art, which is conducive to reducing the volume. Preferably, the manufacturing material of the magnetic core 20 is a cobalt-based amorphous material Co2714A, which has the advantages of high magnetic permeability, low coercive force, extremely low magnetic loss, and extremely insensitive to mechanical stress. It can work in harsh environments for a long time, greatly improving the stability and reliability of the product.

[0024] The winding includes a primary winding and at least one single-turn secondary winding 31. The primary winding (not shown in the figure) can be made of round enameled wire, which passes through the window and is wound on the magnetic core 20 and is located in the magnetic core mounting groove. A plurality of pairs of primary winding pins 32 are provided on one side of the skeleton 10, and the two ends of the plurality of primary windings are respectively connected to a pin; for the convenience of wiring, a wire notch 121 is also provided on the side of the outer limit plate 12 facing the primary winding pin 32.

[0025] The single-turn secondary winding 31 can be made of wire with a much larger cross-sectional area than the primary winding, such as a flat wire, whose cross-sectional area is at least 5 times the cross-sectional area of ​​the primary winding wire, which is conducive to passing a larger current, so that multiple single-turn secondary windings can increase the output power of the transformer to several kilowatts. At the same time, the single-turn secondary winding 31 has only one turn of coil, and is an inverted U-shaped structure surrounding the magnetic core 20, and its two ends are plugged into the skeleton 10 and protrude from the side of the skeleton 10 away from the magnetic core 20 to form a pin, which is conducive to improving the efficiency of assembly. For details, please refer to Figure 1 , 2The single-turn secondary winding 31 includes two secondary winding pins 311 and a connecting portion 312 disposed between the two secondary winding pins 311. The secondary winding pins 311 are provided with a limiting groove, and the connecting portion 312 is provided with a plug connector plugged into the limiting groove. The three are plugged in sequence to form an inverted U-shaped structure, and are processed by automatic soldering, which is convenient for processing. Preferably, the secondary winding pins 311 and the connecting portion 312 have the same cross section.

[0026] Furthermore, the secondary winding pin 311 at one end of the single-turn secondary winding 31 is arranged on the side of the inner limit plate 11 away from the magnetic core 20, and is separated from the primary winding by the inner limit plate 11; the secondary winding pin 311 at the other end of the single-turn secondary winding 31 is arranged on the side of the outer limit plate 12 away from the magnetic core 20, and is separated from the primary winding by the outer limit plate 12, thereby increasing the creepage distance. The inner limit plate 11 is also provided with an insulating partition 13 on the side away from the magnetic core 20, and the insulating partition 13 is provided between each of the plurality of secondary winding pins 311, such as Figure 2 As shown, in this embodiment, the insulating partition 13 is cross-shaped, which separates the four secondary winding pins 311, increases the creepage distance, and improves safety.

[0027] The above are one or more embodiments of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An integrated high-power transformer for photovoltaic new energy, characterized in that: include A frame, wherein the frame is provided with an inner limit plate and an outer limit plate, wherein the inner limit plate, the outer limit plate and the frame form a magnetic core installation slot, and the frame, the inner limit plate and the outer limit plate are all insulated; A magnetic core, wherein the magnetic core is provided with a window, the magnetic core is arranged in the magnetic core installation groove, and the axial direction of the magnetic core is perpendicular to the upper surface of the skeleton; The winding comprises a primary winding and at least one single-turn secondary winding, the primary winding passes through the window and is wound around the magnetic core, the single-turn secondary winding is an inverted U-shape, one end of the single-turn secondary winding is arranged on the side of the inner limit plate away from the magnetic core, and the other end is arranged on the side of the outer limit plate away from the magnetic core.

2. The integrated high-power transformer for photovoltaic new energy according to claim 1, characterized in that: The inner limiting plate, the outer limiting plate and the magnetic core are all ring-shaped.

3. The integrated high-power transformer for photovoltaic new energy according to claim 1, characterized in that: The magnetic core is made of cobalt-based amorphous material Co2714A.

4. The integrated high-power transformer for photovoltaic new energy according to claim 1, characterized in that: A plurality of primary winding pins are also arranged on one side of the frame, and a wire notch is arranged on the side of the outer limiting plate facing the primary winding pins.

5. The integrated high-power transformer for photovoltaic new energy according to claim 1, characterized in that: The single-turn secondary winding comprises two secondary winding pins and a connecting portion arranged between the two secondary winding pins, the secondary winding pins are provided with a limiting groove, and the connecting portion is provided with a plug connector plugged into the limiting groove.

6. The integrated high-power transformer for photovoltaic new energy according to claim 5, characterized in that: The secondary winding pin has the same cross section as the connecting portion.

7. The integrated high-power transformer for photovoltaic new energy according to claim 5, characterized in that: The secondary winding pins are plugged into the frame.

8. The integrated high-power transformer for photovoltaic new energy according to claim 5, characterized in that: An insulating partition is also provided on the side of the inner limit plate facing away from the magnetic core, and the insulating partition is provided between each of the plurality of secondary winding pins.

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