Iron core structure convenient for heat dissipation and transformer using same

Abstract

The utility model relates to the technical field of transformers, in particular to an iron core structure convenient for heat dissipation and a transformer using the same. The iron core structure facilitating heat dissipation comprises a first lamination component, a second lamination component and a first heat dissipation plate, each of the first lamination component and the second lamination component comprises an iron core column section, an upper iron yoke section and a lower iron yoke section, the upper iron yoke section and the lower iron yoke section are located at the upper end and the lower end of the iron core column section, and the first lamination component and the second lamination component are oppositely arranged; the first heat dissipation plate is arranged between the iron core column section of the first lamination component and the iron core column section of the second lamination component, so that a first ventilation cavity is formed between the first lamination component and the second lamination component at an interval; the two ends of the first heat dissipation plate in the height direction extend to the two ends of the iron core structure correspondingly. According to the utility model, the heat dissipation effect of the iron core and the winding is effectively improved, the temperature rise of the iron core and the winding is reduced, and the overall structural strength of the iron core structure is higher. The problem that the heat dissipation effect of the iron core and the winding cannot be further improved due to the limited air passage area of the existing iron core is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an iron core structure which is convenient for heat dissipation and a transformer using the same. Background Art

[0002] The existing energy storage dry-type transformer is affected by the inverter characteristics, DC bias and harmonics, and the core temperature is higher than that of conventional distribution transformers. In addition, the inner winding connected to the inverter is also affected by harmonics, which causes the transformer temperature to rise. The reason for the above situation is that during the operation of the transformer, the heat generated rises to the core yoke and is blocked by the core yoke, causing the hot air flow to swirl, which eventually leads to an increase in the local temperature of the winding, with the middle phase having a higher temperature than the other two phases.

[0003] In order to further improve the heat dissipation effect of the iron core, a method of setting multiple stays on the iron core is currently adopted, and the stays arranged at intervals form air channels inside the iron core to improve the heat dissipation effect. This structure improves the ventilation effect inside the iron core to a certain extent, but because the stays are only added at the position of the iron core yoke, the air channel area formed is limited, and the heat dissipation effect of the iron core and winding cannot be further improved. Utility Model Content

[0004] The main purpose of the utility model is to provide an iron core structure that is easy to dissipate heat, effectively improve the heat dissipation effect of the iron core and the winding, reduce the temperature rise of the iron core and the winding, and solve the problem that the existing iron core airway area is limited and the heat dissipation effect of the iron core and the winding cannot be further improved.

[0005] Another object of the utility model is to provide a transformer using the above-mentioned iron core structure that is easy to dissipate heat, which effectively improves the heat dissipation effect of the iron core and the winding, and solves the current problem of short service life of the transformer due to increased temperature of the iron core and the winding.

[0006] To achieve the above-mentioned purpose, the utility model provides an iron core structure that is convenient for heat dissipation and is applied to a transformer. The iron core structure includes a first laminate component, a second laminate component and a first heat dissipation plate. The first laminate component and the second laminate component both include an iron core column segment, an upper iron yoke segment and a lower iron yoke segment located at the upper and lower ends of the iron core column segment. The first laminate component and the second laminate component are arranged opposite to each other.

[0007] The first heat sink is arranged between the core column section of the first laminate component and the core column section of the second laminate component, so that a first ventilation cavity is formed between the first laminate component and the second laminate component; both ends of the first heat sink in the height direction extend to both ends of the core structure respectively;

[0008] On one side wall of the first heat dissipation plate in its own thickness direction, a plurality of first ventilation grooves are provided, and the first ventilation grooves penetrate through the first heat dissipation plate in the height direction.

[0009] Optionally, the first heat dissipation plate has the same width dimension as the iron core column section.

[0010] Optionally, the iron core structure further includes a second heat dissipation plate, which is arranged between the upper yoke section of the first lamination component and the upper yoke section of the second lamination component, and the second heat dissipation plate is arranged at an interval with the first heat dissipation plate along the yoke length direction; on one side wall of the second heat dissipation plate in its own thickness direction, a plurality of second ventilation grooves are provided, and the second ventilation grooves penetrate through the second heat dissipation plate in the height direction.

[0011] Optionally, the opening directions of the first ventilation grooves and the second ventilation grooves are the same.

[0012] Optionally, the iron core structure further includes a third lamination component and a third heat dissipation plate;

[0013] The third lamination component is arranged on one side of the first lamination component away from the second lamination component, and the third lamination component includes an iron core column section, upper yoke sections and lower yoke sections located at the upper and lower ends of the iron core column section;

[0014] The third heat dissipation plate is arranged between the iron core column section of the third lamination component and the iron core column section of the first lamination component, so that a second ventilation cavity is formed at an interval between the third lamination component and the first lamination component; both ends of the third heat dissipation plate in the height direction extend to both ends of the iron core structure;

[0015] On one side wall of the third heat dissipation plate in its own thickness direction, a plurality of third ventilation grooves are provided, and the third ventilation grooves penetrate through the third heat dissipation plate in the height direction.

[0016] Optionally, the iron core structure further includes a fourth heat dissipation plate, which is arranged between the upper yoke section of the third lamination component and the upper yoke section of the first lamination component, and the fourth heat dissipation plate is arranged at an interval with the third heat dissipation plate along the yoke length direction; on one side wall of the fourth heat dissipation plate in its own thickness direction, a plurality of fourth ventilation grooves are provided, and the fourth ventilation grooves penetrate through the fourth heat dissipation plate in the height direction.

[0017] Optionally, the openings of the third ventilation grooves and the fourth ventilation grooves both face the third lamination component, and the openings of the first ventilation grooves and the second ventilation grooves both face the first lamination component.

[0018] Optionally, the second ventilation grooves and the fourth ventilation grooves have the same width dimension.

[0019] Optionally, the sum of the widths a of the first heat dissipation plates, the sum of the widths b of the second heat dissipation plates, and the length L of the upper yoke section satisfy the following relationship:

[0020] (L - a - b) / L * 100% ≤ 30%.

[0021] The present utility model further provides a transformer, including the iron core structure facilitating heat dissipation according to any one of the above and a coil wound around the iron core structure.

[0022] Compared with the prior art, the embodiments of the present utility model have the following beneficial effects:

[0023] In the present utility model, by providing a first heat dissipation plate between the iron core column sections of the first lamination component and the iron core column sections of the second lamination component, both ends in the height direction of the first heat dissipation plate extend to both ends of the iron core structure respectively, and a first ventilation groove penetrating through it is provided on one side wall in the thickness direction of the first heat dissipation plate, so that an air passage is formed between the iron core column sections of the first lamination component and the iron core column sections of the second lamination component, thereby enabling the heat in the middle of the iron core column of the iron core structure to be released and discharged outward through the air passage formed by the first ventilation groove. In addition, since a first ventilation cavity is formed between the first lamination component and the second lamination component, the heat of the winding is released and discharged outward through the first ventilation cavity. Therefore, the present utility model effectively improves the heat dissipation effect of the iron core and the winding, and reduces the temperature rise of the iron core and the winding. In addition, due to the reduction of the temperature rise of the iron core and the winding, the assembly distance from the iron core to the winding can be further reduced, the size can be made more compact, and the material consumption can be reduced. Since the first heat dissipation plate is plate-shaped and has certain rigidity and strength, the anti-deformation ability of the iron core structure can be enhanced, the overall structural strength of the iron core structure can be improved, and thus the reliability of the product can be improved. The present utility model solves the problem that the existing iron core air passage area is limited and the heat dissipation effect of the iron core and the winding cannot be further improved. The present utility model is applied to a transformer. By adopting the structure of the present utility model, the problem that the service life of the transformer is short due to the high temperature of the iron core at present is solved. Description of the Drawings

[0024] Figure 1 Schematic structural diagram of the iron core structure facilitating heat dissipation and the winding according to an embodiment of the present utility model;

[0025] Figure 2 Right view of the iron core structure facilitating heat dissipation and the winding according to an embodiment of the present utility model;

[0026] Figure 3 Top view of the iron core structure facilitating heat dissipation and the winding according to an embodiment of the present utility model;

[0027] Figure 4Schematic diagram of the first lamination component and the second lamination component of the iron core structure facilitating heat dissipation according to an embodiment of the present utility model;

[0028] Figure 5 Top view of the iron core structure facilitating heat dissipation and the winding according to another embodiment of the present utility model;

[0029] Figure 6 Top view of the iron core structure facilitating heat dissipation and the winding according to still another embodiment of the present utility model;

[0030] Figure 7 Right view of the iron core structure facilitating heat dissipation according to still another embodiment of the present utility model;

[0031] Figure 8 Right view of the iron core structure facilitating heat dissipation and the winding according to still another embodiment of the present utility model;

[0032] Figure 9 Top view of the iron core structure facilitating heat dissipation and the winding according to still another embodiment of the present utility model;

[0033] Figure 10 Top view of the first heat dissipation plate of the iron core structure facilitating heat dissipation according to still another embodiment of the present utility model;

[0034] Figure 11 Top view of the second heat dissipation plate of the iron core structure facilitating heat dissipation according to still another embodiment of the present utility model.

[0035] Wherein: 1. First lamination component; 2. Second lamination component; 3. First heat dissipation plate; 31. First ventilation groove; 4. Iron core column section; 5. Upper yoke section; 6. Lower yoke section; 7. First ventilation cavity; 8. Second heat dissipation plate; 81. Second ventilation groove; 9. Third lamination component; 11. Third heat dissipation plate; 111. Third ventilation groove; 12. Second ventilation cavity; 13. Fourth heat dissipation plate; 131. Fourth ventilation groove. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present utility model belong to the scope protected by the present utility model.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0040] The present utility model provides an iron core structure that is convenient for heat dissipation.

[0041] In the embodiments of the present utility model, as Figures 1 to 4 shown, the iron core structure that is convenient for heat dissipation is applied to a transformer. The iron core structure includes a first lamination component 1, a second lamination component 2, and a first heat dissipation plate 3. Both the first lamination component 1 and the second lamination component 2 include an iron core column section 4, an upper yoke section 5 and a lower yoke section 6 located at the upper and lower ends of the iron core column section 4. The first lamination component 1 and the second lamination component 2 are arranged opposite to each other;

[0042] The first heat dissipation plate 3 is arranged between the iron core column sections 4 of the first lamination component 1 and the second lamination component 2, so that a first ventilation cavity 7 is formed at an interval between the first lamination component 1 and the second lamination component 2; both ends of the first heat dissipation plate 3 in the height direction extend to both ends of the iron core structure;

[0043] On one side wall of the first heat dissipation plate 3 in its own thickness direction, a plurality of first ventilation grooves 31 are provided, and the first ventilation grooves 31 penetrate through the first heat dissipation plate 3 in the height direction.

[0044] In the utility model, by arranging the first heat dissipation plate 3 between the iron core column sections 4 of the first lamination component 1 and the iron core column sections 4 of the second lamination component 2, both ends of the first heat dissipation plate 3 in the height direction extend to both ends of the iron core structure, and on one side wall of the first heat dissipation plate 3 in its own thickness direction, the first ventilation grooves 31 penetrating through it are provided, so that an air duct is formed between the iron core column sections 4 of the first lamination component 1 and the iron core column sections 4 of the second lamination component 2, thereby enabling the heat in the middle of the iron core column of the iron core structure to be released and discharged outward through the air duct formed by the first ventilation grooves 31. In addition, since a first ventilation cavity 7 is formed between the first lamination component 1 and the second lamination component 2, the heat of the winding is released and discharged outward through the first ventilation cavity 7. Therefore, the utility model effectively improves the heat dissipation effect of the iron core and the winding, and reduces the temperature rise of the iron core and the winding. In addition, due to the reduction of the temperature rise of the iron core and the winding, the assembly distance from the iron core to the winding can be further reduced, the size can be made more compact, and the material consumption can be reduced. Since the first heat dissipation plate 3 is plate-shaped and has certain rigidity and strength, the anti-deformation ability of the iron core structure can be enhanced, the overall structural strength of the iron core structure can be improved, and the reliability of the product can be further improved. The utility model solves the problem that the heat dissipation effect of the iron core and the winding cannot be further improved due to the limited air duct area of the existing iron core. The utility model is applied to a transformer, and with the structure of the utility model, the problem that the service life of the transformer is short due to the high temperature of the iron core at present is solved.

[0045] Furthermore, both ends of the first heat dissipation plate 3 in the height direction are flush with both ends of the iron core structure.

[0046] Furthermore, the iron core column sections 4, upper yoke sections 5, and lower yoke sections 6 of the first lamination component 1 and the second lamination component 2 are respectively stacked by a plurality of iron core sheets. Among them, the number of iron core sheets of the iron core column sections 4, upper yoke sections 5, and lower yoke sections 6 in the first lamination component 1 is the same, and the number of iron core sheets of the iron core column sections 4, upper yoke sections 5, and lower yoke sections 6 in the second lamination component 2 is the same. In a specific preferred embodiment, the number of iron core column sections 4 is 3, and the number of the first heat dissipation plates 3 is also 3, and the first heat dissipation plates 3 are arranged corresponding to the iron core column sections 4 one by one.

[0047] During lamination, the first heat dissipation plate 3 is placed between the first lamination component 1 and the second lamination component 2. Relying on the pressing force between the two, the first heat dissipation plate 3 is fixed between the first lamination component 1 and the second lamination component 2, that is, the relative position of the air duct formed by the first ventilation grooves 31 and the iron core sheets remains unchanged.

[0048] Such as Figures 1 to 4As shown, in an embodiment of the present application, the width dimension of the first heat dissipation plate 3 is the same as that of the iron core column section 4.

[0049] The first heat dissipation plate 3 is arranged corresponding to the iron core column section 4, and the two adopt the same width dimension, which can maximize the contact area between the first heat dissipation plate 3 and the iron core column section 4, so that the heat of the iron core column section 4 is transferred to the external environment through the air duct formed by the first ventilation groove 31 provided on the first heat dissipation plate 3, further improving the heat dissipation effect of the iron core structure. Since the width dimensions of the first heat dissipation plate 3 and the iron core column section 4 are the same, at this time, the first heat dissipation plate 3 can fit more closely on the iron core column section 4, thereby improving the stability and rigidity of the entire iron core structure.

[0050] As Figures 4 to 5 shown, in an embodiment of the present application, the iron core structure further includes a second heat dissipation plate 8, and the second heat dissipation plate 8 is arranged between the upper yoke section 5 of the first lamination component 1 and the upper yoke section 5 of the second lamination component 2, and the second heat dissipation plate 8 and the first heat dissipation plate 3 are arranged at intervals along the yoke length direction; a plurality of second ventilation grooves 81 are provided on one side wall of the second heat dissipation plate 8 in its own thickness direction, and the second ventilation grooves 81 penetrate through the second heat dissipation plate 8 along the height direction.

[0051] Arranging the second heat dissipation plate 8 between the upper yoke section 5 of the first lamination component 1 and the upper yoke section 5 of the second lamination component 2 can release the heat at the top of the winding through the second ventilation grooves 81 of the second heat dissipation plate 8. In addition, the second heat dissipation plate 8 is plate-shaped, and the setting of the second heat dissipation plate 8 reduces the span of the first ventilation cavity 7 in the yoke part of the iron core structure, that is, there are more support points between the first lamination component 1 and the second lamination component 2, which can improve the overall structural strength of the iron core structure.

[0052] Specifically, both ends of the second heat dissipation plate 8 are flush with the upper edge and the lower edge of the upper yoke section 5 respectively.

[0053] Similarly, the second heat dissipation plate 8 can be arranged between the lower yoke section 6 of the first lamination component 1 and the lower yoke section 6 of the second lamination component 2, and a plurality of second ventilation grooves 81 are arranged on one side wall of the second heat dissipation plate 8 in its own thickness direction, and the second ventilation grooves 81 penetrate through the second heat dissipation plate 8 along the height direction. At this time, the heat at the bottom of the winding can also pass through the second ventilation grooves 81 of the second heat dissipation plate 8. Preferably, the second heat dissipation plate 8 is arranged corresponding to the coil.

[0054] As Figure 5 shown, in an embodiment of the present application, the opening directions of the first ventilation groove 31 and the second ventilation groove 81 are the same.

[0055] The same opening direction of the first ventilation groove 31 and the second ventilation groove 81 can improve the aesthetics of the present utility model. However, in actual applications, the opening directions of the first ventilation groove 31 and the second ventilation groove 81 can be inconsistent, depending on the actual situation.

[0056] As Figures 6 to 8 shown, in an embodiment of the present application, the iron core structure further includes a third lamination component 9 and a third heat dissipation plate 11;

[0057] The third lamination component 9 is disposed on a side of the first lamination component 1 away from the second lamination component 2. The third lamination component 9 includes an iron core column section 4, an upper yoke section 5 and a lower yoke section 6 located at the upper and lower ends of the iron core column section 4;

[0058] The third heat dissipation plate 11 is disposed between the iron core column section 4 of the third lamination component 9 and the iron core column section 4 of the first lamination component 1, so as to form a second ventilation cavity 12 at intervals between the third lamination component 9 and the first lamination component 1; both ends of the third heat dissipation plate 11 in the height direction extend to both ends of the iron core structure;

[0059] A plurality of third ventilation grooves 111 are provided on one side wall of the third heat dissipation plate 11 in its own thickness direction, and the third ventilation grooves 111 penetrate through the third heat dissipation plate 11 in the height direction.

[0060] In order to further improve the heat dissipation efficiency of the iron core and the winding, the third lamination component 9 is provided. The third lamination component 9 is disposed on a side of the first lamination component 1 away from the second lamination component 2. Through the third ventilation grooves 111 of the third heat dissipation plate 11, the airway area is increased, and combined with the second ventilation cavity 12, the heat dissipation effect of the iron core and the winding is further improved.

[0061] Preferably, the third heat dissipation plate 11 and the first heat dissipation plate 3 are symmetrically arranged. The openings of the third ventilation grooves 111 face the third lamination component 9, and the heat of the iron core column section 4 of the third lamination component 9 can be released through the third ventilation grooves 111; the openings of the first ventilation grooves 31 face the second lamination component 2, and the heat of the iron core column section 4 of the second lamination component 2 can be released through the first ventilation grooves 31.

[0062] Furthermore, the iron core column section 4, the upper yoke section 5 and the lower yoke section 6 of the third lamination component 9 are also stacked by a plurality of iron chips, and the number of iron chip layers of the iron core column section 4, the upper yoke section 5 and the lower yoke section 6 is the same.

[0063] Furthermore, both ends of the third heat dissipation plate 11 in the height direction are flush with both ends of the iron core structure.

[0064] As Figure 8 and Figure 9As shown, in an embodiment of the present application, the iron core structure further includes a fourth heat dissipation plate 13. The fourth heat dissipation plate 13 is disposed between the upper yoke section 5 of the third lamination component 9 and the upper yoke section 5 of the first lamination component 1. The fourth heat dissipation plate 13 and the third heat dissipation plate 11 are spaced apart along the yoke length direction. On one side wall of the fourth heat dissipation plate 13 in its own thickness direction, there are a number of fourth ventilation grooves 131, and the fourth ventilation grooves 131 penetrate through the fourth heat dissipation plate 13 along the height direction.

[0065] The fourth ventilation grooves 131 of the fourth heat dissipation plate 13 can further increase the airway area, enabling the heat at the top of the winding to be released outward through the airway formed by the fourth ventilation grooves 131 of the fourth heat dissipation plate 13, thereby rapidly reducing the winding temperature. In addition, since the fourth heat dissipation plate 13 is plate-shaped, the setting of the fourth heat dissipation plate 13 reduces the span of the second ventilation cavity 12 in the yoke part of the iron core structure, that is, there are more support points between the first lamination component 1 and the third lamination component 9, which can further improve the overall structural strength of the iron core structure.

[0066] Furthermore, both ends of the fourth heat dissipation plate 13 are flush with the upper edge and the lower edge of the upper yoke section 5 respectively.

[0067] Similarly, a fourth heat dissipation plate 13 can be disposed between the lower yoke section 6 of the third lamination component 9 and the lower yoke section 6 of the first lamination component 1.

[0068] As Figure 9 shown, in an embodiment of the present application, the openings of the third ventilation grooves 111 and the fourth ventilation grooves 131 both face the third lamination component 9, and the openings of the first ventilation grooves 31 and the second ventilation grooves 81 both face the first lamination component 1.

[0069] The openings of the third ventilation grooves 111 and the fourth ventilation grooves 131 both face the third lamination component 9, and the openings of the first ventilation grooves 31 and the second ventilation grooves 81 both face the first lamination component 1. Furthermore, this can enable the heat of the first lamination component 1 and the third lamination component 9 to be released, and can also improve the overall aesthetics of the iron core structure.

[0070] As Figure 9 and Figure 10 shown, in an embodiment of the present application, the second ventilation grooves 81 and the fourth ventilation grooves 131 have the same width dimension.

[0071] In actual production, in order to unify the production molds, the second ventilation grooves 81 and the fourth ventilation grooves 131 adopt the same width dimension.

[0072] Further explanation, the first heat dissipation plate 3, the second heat dissipation plate 8, the third heat dissipation plate 11, and the fourth heat dissipation plate 13 are all produced by an extrusion molding process. Preferably, the materials of the first heat dissipation plate 3 and the second heat dissipation plate 8, the third heat dissipation plate 11, and the fourth heat dissipation plate 13 are all reinforced nylon 66. As Figure 10 and 11 shown, in order to unify the production mold and improve production efficiency, in actual production, a heat dissipation plate with a certain length dimension (preferably a length dimension of 3m) and width dimension (preferably a width dimension of 100mm) can be extruded first. A plurality of ventilation grooves are provided on one side wall of the heat dissipation plate in its own thickness direction. Then, the first single plate is cut out according to the length dimension of the first heat dissipation plate 3. In order to meet the width requirement of the first heat dissipation plate 3, the first heat dissipation plate 3 is composed of a plurality of first single plates spliced together. The second heat dissipation plate 8 is cut out according to the length dimension of the second heat dissipation plate 8. In other embodiments, the first heat dissipation plate 3 may not adopt a splicing structure but an integral molding structure. Similarly, in production, the third heat dissipation plate 11 and the fourth heat dissipation plate 13 can also be cut according to their respective length dimensions.

[0073] As Figures 9 - 11 shown, in an embodiment of the present application, the sum of the widths a of the first heat dissipation plates 3, the sum of the widths b of the second heat dissipation plates 8, and the length L of the upper yoke section 5 satisfy the following relationship:

[0074] (L - a - b) / L * 100% ≤ 30%.

[0075] In this preferred embodiment, the sum of the widths a of the first heat dissipation plates 3, the sum of the widths b of the second heat dissipation plates 8, and the length L of the upper yoke section 5 satisfy the above relationship in order to control that the sum of the gaps between the first heat dissipation plates 3 and the second heat dissipation plates 8 and between two second heat dissipation plates 8 in the upper yoke section 5 will not be too large. While ensuring that gaps are formed between the plates to improve the heat dissipation effect, it can also prevent the gaps between the plates from being too large, avoiding deformation of the iron core structure and further improving the structural strength of the iron core structure. The width of the first heat dissipation plate 3 is W1, the sum of the widths a of the first heat dissipation plates 3 is W1 * n1 (n1 is the number of the first heat dissipation plates 3), the width of the second heat dissipation plate 8 is W2, and the sum of the widths b of the second heat dissipation plates 8 is W2 * n2 (n2 is the number of the second heat dissipation plates 8).

[0076] Similarly, the sum of the widths of the third heat dissipation plates 11 and the sum of the widths of the fourth heat dissipation plates 13 and the length L of the upper yoke section 5 can also satisfy the above relationship, ensuring the heat dissipation effect while improving the structural strength of the present utility model.

[0077] The present utility model also proposes a transformer, which includes the above-mentioned iron core structure facilitating heat dissipation and a coil wound around the iron core structure.

[0078] By using an iron core structure that is easy to dissipate heat, the heat dissipation effect of the iron core and the winding can be effectively improved, solving the current problem of short service life of the transformer due to increased core temperature.

[0079] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. An iron core structure facilitating heat dissipation, which is applied to a transformer, and is characterized in that The core structure includes a first laminated component (1), a second laminated component (2), and a first heat dissipation plate (3). The first laminated component (1) and the second laminated component (2) each include a core column section (4), an upper yoke section (5) and a lower yoke section (6) located at the upper and lower ends of the core column section (4). The first laminated component (1) and the second laminated component (2) are arranged opposite to each other. The first heat dissipation plate (3) is arranged between the core column sections (4) of the first laminated component (1) and the second laminated component (2), so as to form a first ventilation cavity (7) at an interval between the first laminated component (1) and the second laminated component (2). Both ends of the first heat dissipation plate (3) in the height direction extend to both ends of the core structure. A plurality of first ventilation grooves (31) are provided on one side wall of the first heat dissipation plate (3) in its own thickness direction, and the first ventilation grooves (31) penetrate through the first heat dissipation plate (3) in the height direction.

2. The iron core structure facilitating heat dissipation according to claim 1, wherein, The first heat dissipation plate (3) has the same width dimension as the core column section (4).

3. The iron core structure facilitating heat dissipation according to claim 1, characterized in that, The core structure further includes a second heat dissipation plate (8). The second heat dissipation plate (8) is arranged between the upper yoke sections (5) of the first laminated component (1) and the second laminated component (2). The second heat dissipation plate (8) and the first heat dissipation plate (3) are arranged at an interval along the yoke length direction. A plurality of second ventilation grooves (81) are provided on one side wall of the second heat dissipation plate (8) in its own thickness direction, and the second ventilation grooves (81) penetrate through the second heat dissipation plate (8) in the height direction.

4. The iron core structure facilitating heat dissipation according to claim 3, characterized in that, The opening directions of the first ventilation grooves (31) and the second ventilation grooves (81) are the same.

5. The iron core structure facilitating heat dissipation according to claim 3, characterized in that, The core structure further includes a third laminated component (9) and a third heat dissipation plate (11). The third laminated component (9) is arranged on the side of the first laminated component (1) away from the second laminated component (2). The third laminated component (9) includes a core column section (4), an upper yoke section (5) and a lower yoke section (6) located at the upper and lower ends of the core column section (4). The third heat dissipation plate (11) is arranged between the core column sections (4) of the third laminated component (9) and the first laminated component (1), so as to form a second ventilation cavity (12) at an interval between the third laminated component (9) and the first laminated component (1). Both ends of the third heat dissipation plate (11) in the height direction extend to both ends of the core structure. A plurality of third ventilation grooves (111) are provided on one side wall of the third heat dissipation plate (11) in its own thickness direction, and the third ventilation grooves (111) penetrate through the third heat dissipation plate (11) in the height direction.

6. The iron core structure facilitating heat dissipation according to claim 5, characterized in that The iron core structure further includes a fourth heat dissipation plate (13), which is disposed between the upper yoke section (5) of the third lamination component (9) and the upper yoke section (5) of the first lamination component (1). The fourth heat dissipation plate (13) is spaced from the third heat dissipation plate (11) along the length direction of the yoke. A plurality of fourth ventilation grooves (131) are provided on one side wall of the fourth heat dissipation plate (13) in its own thickness direction, and the fourth ventilation grooves (131) penetrate through the fourth heat dissipation plate (13) along the height direction.

7. The iron core structure facilitating heat dissipation according to claim 6, wherein, The openings of the third ventilation grooves (111) and the fourth ventilation grooves (131) both face the third lamination component (9), and the openings of the first ventilation grooves (31) and the second ventilation grooves (81) both face the first lamination component (1).

8. The iron core structure facilitating heat dissipation according to claim 6, characterized in that, The second ventilation grooves (81) and the fourth ventilation grooves (131) have the same width dimension.

9. The iron core structure facilitating heat dissipation according to claim 8, wherein, The sum of the widths a of the first heat dissipation plates (3), the sum of the widths b of the second heat dissipation plates (8), and the length L of the upper yoke section (5) satisfy the following relationship: (L - a - b) / L * 100% ≤ 30%.

10. A transformer, characterized in that, It includes an iron core structure facilitating heat dissipation as described in any one of claims 1 to 9 and a coil wound around the iron core structure.

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