Transformer

Abstract

The utility model provides a transformer. The transformer comprises a box body; the heat dissipation structure is arranged on the outer wall surface of the box body, the heat dissipation structure comprises a plurality of heat dissipation split bodies, the plurality of heat dissipation split bodies are arranged on the outer wall surface of the box body at intervals, and each heat dissipation split body comprises a first heat dissipation surface and a second heat dissipation surface which are oppositely arranged in the arrangement direction of the heat dissipation split bodies; at least one of the first heat dissipation surface and the second heat dissipation surface is provided with a convex part and / or a concave part, and the convex part and the concave part extend in the length direction of the heat dissipation split body. According to the technical scheme, the transformer can solve the problem that an existing transformer is low in heat dissipation efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, and particularly to a transformer. Background Art

[0002] With the continuous growth of the global demand for renewable energy, solar power generation, as a clean and sustainable energy form, has an increasingly expanding application range. In a solar power generation system, a photovoltaic inverter integrated machine plays a crucial role. It is responsible for converting the direct current generated by solar panels into alternating current for use by the power grid or the user side. The performance of the inverter integrated machine directly affects the efficiency and reliability of the entire solar power generation system. One of the core components of the photovoltaic inverter integrated machine is the transformer, which plays a crucial role in the process of electric energy conversion. The heat dissipation performance of the transformer is a key factor determining the operating stability and service life of the inverter integrated machine.

[0003] Currently, the transformers of traditional photovoltaic inverter integrated machines generally use finned radiators for heat dissipation. However, due to the limited heat dissipation area of the finned radiator and the relatively large heat generated by the solar power generation system under high sunlight conditions, this heat dissipation method is difficult to meet the heat dissipation requirements, resulting in low heat dissipation efficiency of the transformer. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a transformer that can solve the problem of low heat dissipation efficiency of existing transformers.

[0005] To achieve the above purpose, the utility model provides a transformer, including: a box body; and a heat dissipation structure disposed on the outer wall surface of the box body. The heat dissipation structure includes a plurality of heat dissipation sub-bodies, and the plurality of heat dissipation sub-bodies are arranged at intervals on the outer wall surface of the box body. Along the arrangement direction of the heat dissipation sub-bodies, the heat dissipation sub-body includes a first heat dissipation surface and a second heat dissipation surface arranged opposite to each other, and at least one of the first heat dissipation surface and the second heat dissipation surface is provided with protrusions and / or recesses, and both the protrusions and the recesses extend along the length direction of the heat dissipation sub-body.

[0006] Further, for a single heat dissipation sub-body, a plurality of protrusions and a plurality of recesses are provided on both the first heat dissipation surface and the second heat dissipation surface. The plurality of recesses and the plurality of protrusions on the first heat dissipation surface are alternately arranged in a direction away from the outer wall surface of the box body, and the plurality of recesses and the plurality of protrusions on the second heat dissipation surface are alternately arranged in a direction away from the outer wall surface of the box body.

[0007] Furthermore, a plurality of convex portions and a plurality of concave portions are provided on both the first heat dissipation surface and the second heat dissipation surface of each heat dissipation unit. Between two adjacent heat dissipation units, the first heat dissipation surface of one heat dissipation unit faces the second heat dissipation surface of the other heat dissipation unit, and the convex portions on the first heat dissipation surface are correspondingly arranged with the concave portions on the second heat dissipation surface, and the concave portions on the first heat dissipation surface are correspondingly arranged with the convex portions on the second heat dissipation surface.

[0008] Furthermore, a plurality of convex portions and a plurality of concave portions are provided on both the first heat dissipation surface and the second heat dissipation surface of each heat dissipation unit. For a single heat dissipation unit, the convex portions on the first heat dissipation surface are correspondingly arranged with the concave portions on the second heat dissipation surface, and the concave portions on the first heat dissipation surface are correspondingly arranged with the convex portions on the second heat dissipation surface.

[0009] Furthermore, the distance L1 between two adjacent convex portions on the same first heat dissipation surface ranges from 70 mm to 90 mm.

[0010] Furthermore, the distance L2 between two adjacent heat dissipation units ranges from 40 mm to 50 mm.

[0011] Furthermore, the heat dissipation structure further includes an auxiliary heat dissipation structure. The auxiliary heat dissipation structure is arranged on the outer peripheral side of a plurality of heat dissipation units. The auxiliary heat dissipation structure includes a driving structure and a plurality of fan blades. The driving structure is used to drive the plurality of fan blades to rotate, and the air outlet side of the fan blades faces the heat dissipation units.

[0012] Furthermore, the heat dissipation units are made of a heat-conducting material.

[0013] Furthermore, the plurality of heat dissipation units are integrally formed or separately arranged.

[0014] Furthermore, the transformer further includes a chip radiator, and the chip radiator is installed on the outer wall surface of the box body.

[0015] Applying the technical solution of the present utility model, a heat dissipation structure is provided on the outer wall surface of the box body of the transformer, which can increase the surface area of the outer wall surface of the box body and increase the area of contact between the outer wall surface of the box body and the surrounding air. The heat inside the box body is first transferred to the outer wall surface of the box body, then from the outer wall surface of the box body to a plurality of heat dissipation units, and then from the plurality of heat dissipation units to the external environment. Through the above settings, the rate of heat transfer from the inside of the box body to the external environment can be accelerated, and the heat dissipation efficiency can be improved. In addition, at least one of the first heat dissipation surface and the second heat dissipation surface of the heat dissipation unit is provided with convex portions and / or concave portions, which can increase the disturbance of the air and further improve the heat dissipation efficiency of the transformer, and avoid damage to the transformer due to overheating. Description of the Drawings

[0016] The accompanying drawings of the specification, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the attached

[0017] In the figures:

[0018] Figure 1 A side view of a transformer showing an embodiment of the present utility model is shown;

[0019] Figure 2 A top view of a transformer showing an embodiment of the present utility model is shown;

[0020] Figure 3 Shows Figure 2 An enlarged view of part A of

[0021] Among them, the above-mentioned drawings include the following reference numerals:

[0022] 10, heat dissipation split body; 11, first heat dissipation surface; 12, second heat dissipation surface; 13, convex part; 14, concave part; 20, box body; 30, finned radiator. Specific embodiments

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] Referring to Figures 1 to 3 As shown, the present utility model provides a transformer, which includes: a box body 20; and a heat dissipation structure, the heat dissipation structure is arranged on the outer wall surface of the box body 20, the heat dissipation structure includes a plurality of heat dissipation split bodies 10, the plurality of heat dissipation split bodies 10 are arranged at intervals on the outer wall surface of the box body 20, along the arrangement direction of the heat dissipation split bodies 10, the heat dissipation split bodies 10 include a first heat dissipation surface 11 and a second heat dissipation surface 12 which are oppositely arranged, at least one of the first heat dissipation surface 11 and the second heat dissipation surface 12 is provided with a convex part 13 and / or a concave part 14, and both the convex part 13 and the concave part 14 extend along the length direction of the heat dissipation split body 10.

[0025] In this embodiment, a heat dissipation structure is provided on the outer wall surface of the box body 20 of the transformer, which can increase the surface area of the outer wall surface of the box body 20 and the area of contact between the outer wall surface of the box body 20 and the surrounding air. The heat inside the box body 20 is first transferred to the outer wall surface of the box body 20, then from the outer wall surface of the box body 20 to the multiple heat dissipation units 10, and then from the multiple heat dissipation units 10 to the external environment. Through the above arrangement, the rate of heat transfer from the inside of the box body 20 to the external environment can be accelerated, and the heat dissipation efficiency can be improved. In addition, at least one of the first heat dissipation surface 11 and the second heat dissipation surface 12 of the heat dissipation unit 10 is provided with protrusions 13 and / or recesses 14, which can increase the air disturbance and further improve the heat dissipation efficiency of the transformer, avoiding damage to the transformer due to overheating.

[0026] It should be noted that the heat dissipation unit 10 of the present application is a sheet-like structure, with a relatively simple structure, occupying a small installation space, capable of reducing the overall size of the transformer, and without complex manufacturing processes and expensive equipment investment, thus reducing the production cost. In addition, the heat dissipation structure is applicable to transformers of various specifications, with good versatility and practicability. Moreover, the heat dissipation structure of the present application can withstand a positive pressure of 50 kPa after a full vacuum pressure test.

[0027] In one embodiment, the heat dissipation structure is welded to the outer wall surface of the box body 20.

[0028] Referring to Figures 1 to 3 As shown, in one embodiment of the present utility model, for a single heat dissipation unit 10, a plurality of protrusions 13 and a plurality of recesses 14 are provided on both the first heat dissipation surface 11 and the second heat dissipation surface 12. The plurality of recesses 14 and the plurality of protrusions 13 on the first heat dissipation surface 11 are alternately arranged in a direction away from the outer wall surface of the box body 20, and the plurality of recesses 14 and the plurality of protrusions 13 on the second heat dissipation surface 12 are alternately arranged in a direction away from the outer wall surface of the box body 20.

[0029] In this embodiment, a plurality of protrusions 13 and a plurality of recesses 14 are provided on both the first heat dissipation surface 11 and the second heat dissipation surface 12 of the heat dissipation unit 10. On the one hand, it can increase the surface area of the heat dissipation unit 10 and the area of contact between the heat dissipation unit 10 and the air, improving the heat transfer efficiency. On the other hand, both the first heat dissipation surface 11 and the second heat dissipation surface 12 are uneven structures, which can enhance the air disturbance and cause the air to form vortices in the heat dissipation channels formed between adjacent two heat dissipation units 10, further improving the heat dissipation efficiency.

[0030] Referring to Figures 1 to 3As shown in the figure, in an embodiment of the present utility model, a plurality of convex portions 13 and a plurality of concave portions 14 are provided on both the first heat dissipation surface 11 and the second heat dissipation surface 12 of each heat dissipation unit 10. Between two adjacent heat dissipation units 10, the first heat dissipation surface 11 of one heat dissipation unit 10 faces the second heat dissipation surface 12 of the other heat dissipation unit 10, and the convex portions 13 on the first heat dissipation surface 11 are correspondingly arranged with the concave portions 14 on the second heat dissipation surface 12, and the concave portions 14 on the first heat dissipation surface 11 are correspondingly arranged with the convex portions 13 on the second heat dissipation surface 12.

[0031] In this embodiment, a heat dissipation channel is formed between two adjacent heat dissipation units 10. Since a plurality of convex portions 13 and a plurality of concave portions 14 are provided on both the first heat dissipation surface 11 and the second heat dissipation surface 12, the heat dissipation channel has an uneven structure. Moreover, the convex portions 13 on the first heat dissipation surface 11 are correspondingly arranged with the concave portions 14 on the second heat dissipation surface 12, and the concave portions 14 on the first heat dissipation surface 11 are correspondingly arranged with the convex portions 13 on the second heat dissipation surface 12, so that the cross-section of the heat dissipation channel is variable. Through the above settings, the air can be forced to change the flow direction, thereby forming a vortex, and thus improving the heat dissipation efficiency of the transformer.

[0032] Combined with Figures 1 to 3 As shown in the figure, in an embodiment of the present utility model, a plurality of convex portions 13 and a plurality of concave portions 14 are provided on both the first heat dissipation surface 11 and the second heat dissipation surface 12 of each heat dissipation unit 10. For a single heat dissipation unit 10, the convex portions 13 on the first heat dissipation surface 11 are correspondingly arranged with the concave portions 14 on the second heat dissipation surface 12, and the concave portions 14 on the first heat dissipation surface 11 are correspondingly arranged with the convex portions 13 on the second heat dissipation surface 12.

[0033] Through the above settings, the surface area of the heat dissipation unit 10 can be increased, and the heat dissipation efficiency can be improved.

[0034] Combined with Figures 1 to 3 As shown in the figure, in an embodiment of the present utility model, the distance L1 between two adjacent convex portions 13 on the same first heat dissipation surface 11 ranges from 70 mm to 90 mm. The distance L2 between two adjacent heat dissipation units 10 ranges from 40 mm to 50 mm.

[0035] Through the above settings, not only can the air flow in the heat dissipation channel formed between two adjacent heat dissipation units 10 be ensured, but also the air can form a vortex in the heat dissipation channel, thereby improving the heat dissipation efficiency.

[0036] It should be noted that the specific values of L1 and L2 can be set according to the heat dissipation requirements and the size requirements of the transformer.

[0037] In one embodiment of the present utility model, the heat dissipation structure further includes an auxiliary heat dissipation structure. The auxiliary heat dissipation structure is disposed on the outer peripheral side of a plurality of heat dissipation units 10. The auxiliary heat dissipation structure includes a driving structure and a plurality of fan blades. The driving structure is used to drive the plurality of fan blades to rotate, and the air outlet side of the fan blades is arranged facing the heat dissipation unit 10.

[0038] In this embodiment, the driving structure drives the plurality of fan blades to rotate. The rotation of the fan blades can further enhance the air flow, thereby accelerating heat dissipation.

[0039] In one embodiment, the driving structure is a motor.

[0040] In one embodiment of the present utility model, the heat dissipation unit 10 is made of a heat-conducting material.

[0041] In this embodiment, the heat dissipation unit 10 is made of a heat-conducting material, so that the heat dissipation unit 10 has good heat conductivity, so as to quickly conduct heat from the outer wall surface of the box body 20 to the heat dissipation unit 10, and then transfer it from the heat dissipation unit 10 to the external environment, and improve the heat dissipation efficiency of the transformer through natural convection and radiation heat dissipation.

[0042] In one embodiment of the present utility model, the plurality of heat dissipation units 10 are integrally formed or separately arranged.

[0043] In this embodiment, the plurality of heat dissipation units 10 are integrally formed or separately arranged. If the plurality of heat dissipation units 10 are integrally formed, it is convenient to install the heat dissipation structure on the outer wall surface of the box body 20. If the plurality of heat dissipation units 10 are separately arranged, the number of heat dissipation units 10 can be flexibly increased or decreased according to the actual heat dissipation requirements, and the applicability is higher.

[0044] Combined with reference to Figures 1 to 3 As shown, in one embodiment of the present utility model, the transformer further includes a finned heat sink 30, and the finned heat sink 30 is installed on the outer wall surface of the box body 20.

[0045] In this embodiment, the finned heat sink 30 is a finned heat sink 30 of the prior art, and the specific structure will not be described herein. The combination of the finned heat sink 30 and the heat dissipation structure can greatly improve the heat dissipation efficiency of the transformer and extend the service life of the transformer.

[0046] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: A heat dissipation structure is provided on the outer wall surface of the transformer box body, which can increase the surface area of the outer wall surface of the box body and the area of contact between the outer wall surface of the box body and the surrounding air. The heat inside the box body is first transferred to the outer wall surface of the box body, then from the outer wall surface of the box body to multiple heat dissipation units, and then from the multiple heat dissipation units to the external environment. Through the above arrangement, the rate of heat transfer from the inside of the box body to the external environment can be accelerated, and the heat dissipation efficiency can be improved. In addition, at least one of the first heat dissipation surface and the second heat dissipation surface of the heat dissipation unit is provided with protrusions and / or recesses, which can increase the disturbance of the air and further improve the heat dissipation efficiency of the transformer, avoiding damage to the transformer due to overheating.

[0047] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0049] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A transformer, characterized in that: include: Box body (20); as well as A heat dissipation structure, wherein the heat dissipation structure is arranged on the outer wall surface of the box body (20), and the heat dissipation structure comprises a plurality of heat dissipation sub-bodies (10), wherein the plurality of heat dissipation sub-bodies (10) are arranged at intervals on the outer wall surface of the box body (20), and along the arrangement direction of the heat dissipation sub-bodies (10), the heat dissipation sub-bodies (10) comprise a first heat dissipation surface (11) and a second heat dissipation surface (12) arranged opposite to each other, and at least one of the first heat dissipation surface (11) and the second heat dissipation surface (12) is provided with a convex portion (13) and / or a concave portion (14), and the convex portion (13) and the concave portion (14) both extend along the length direction of the heat dissipation sub-bodies (10).

2. The transformer according to claim 1, characterized in that: For a single heat dissipation split body (10), a plurality of convex portions (13) and a plurality of concave portions (14) are provided on both the first heat dissipation surface (11) and the second heat dissipation surface (12); the plurality of concave portions (14) and the plurality of convex portions (13) located on the first heat dissipation surface (11) are alternately arranged in a direction away from the outer wall surface of the box body (20); and the plurality of concave portions (14) and the plurality of convex portions (13) located on the second heat dissipation surface (12) are alternately arranged in a direction away from the outer wall surface of the box body (20).

3. The transformer according to claim 1, characterized in that: The first heat dissipation surface (11) and the second heat dissipation surface (12) of each heat dissipation split body (10) are provided with a plurality of protrusions (13) and a plurality of recesses (14); between two adjacent heat dissipation split bodies (10), the first heat dissipation surface (11) of one heat dissipation split body (10) faces the second heat dissipation surface (12) of the other heat dissipation split body (10), and the protrusions (13) on the first heat dissipation surface (11) and the recesses (14) on the second heat dissipation surface (12) are provided correspondingly, and the recesses (14) on the first heat dissipation surface (11) and the protrusions (13) on the second heat dissipation surface (12) are provided correspondingly.

4. The transformer according to claim 1, characterized in that: The first heat dissipation surface (11) and the second heat dissipation surface (12) of each heat dissipation split body (10) are provided with a plurality of protrusions (13) and a plurality of recesses (14); for a single heat dissipation split body (10), the protrusions (13) on the first heat dissipation surface (11) and the recesses (14) on the second heat dissipation surface (12) are provided correspondingly, and the recesses (14) on the first heat dissipation surface (11) and the protrusions (13) on the second heat dissipation surface (12) are provided correspondingly.

5. The transformer according to claim 1, characterized in that: The distance L1 between two adjacent protrusions (13) located on the same first heat dissipation surface (11) has a value ranging from 70 mm to 90 mm.

6. The transformer according to any one of claims 1 to 5, characterized in that: The distance L2 between two adjacent heat dissipation parts (10) ranges from 40 mm to 50 mm.

7. The transformer according to any one of claims 1 to 5, characterized in that: The heat dissipation structure also includes an auxiliary heat dissipation structure, which is arranged on the outer peripheral side of the plurality of heat dissipation split bodies (10). The auxiliary heat dissipation structure includes a driving structure and a plurality of fan blades, and the driving structure is used to drive the plurality of fan blades to rotate, and the air outlet side of the fan blades is arranged toward the heat dissipation split bodies (10).

8. The transformer according to any one of claims 1 to 5, characterized in that: The heat dissipation split body (10) is made of heat-conducting material.

9. The transformer according to any one of claims 1 to 5, characterized in that: The plurality of heat dissipation sub-bodies (10) are integrally formed or separately arranged.

10. The transformer according to any one of claims 1 to 5, characterized in that: The transformer further comprises a plate-type heat sink (30), and the plate-type heat sink (30) is mounted on the outer wall surface of the box body (20).

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