Annular iron core winding transformer

Abstract

The utility model discloses an annular iron core winding transformer which is characterized by comprising a first iron core, a second iron core, an upper-layer coil and a lower-layer coil, the upper-layer coil, the first iron core and the lower-layer coil are all annular and are sequentially overlapped from top to bottom to form a base body, the base body is annular, and the first iron core and the second iron core are arranged on the base body. The upper layer coil and the lower layer coil are both formed by continuously and annularly winding a plurality of layers of copper wires; the second iron core wraps the outer surface of the base body, and the second iron core is formed in the mode that a silicon steel iron wire is continuously and spirally wound on the outer side of the base body and advances in the annular direction of the base body. According to the combined structure of the iron core and the copper coil in the scheme, the magnetic circuit is short, the transient power is large, the response is faster, and the loss of the iron core can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to transformer technical field, concretely relates to a ring direction iron core winding transformer. BACKGROUND

[0002] At present, transformer technology is widely used in power systems, including power plants, transmission lines and distribution networks. It can deliver high voltage to a long distance and convert it into the required low voltage at the target site. This helps to reduce energy loss and provides convenient power distribution. In addition, transformers are also used in electronic devices, such as power adapters, wireless charging devices and audio equipment, etc. They can convert the mains voltage into the appropriate voltage required by the device. In summary, transformer technology plays an important role in energy transmission and electronic devices, and plays a key function in various modern electrical applications.

[0003] Common EI type transformer usually adopts rectangular core, but its core is divided into two equal and mirror symmetric parts. The main winding and secondary winding are alternately wound on the two parts, which has the disadvantage that the magnetic circuit is long, and the advantages of silicon steel cannot be fully utilized, the magnetic density is low, and the leakage magnetic is very serious, resulting in low efficiency. Common ring direction iron core winding transformer, the core is usually a closed ring, the cross section is rectangular or square, the main winding and secondary winding are wound on the core, but due to the closed ring of the core, the heat dissipation performance is relatively poor, and the ring direction iron core winding transformer is composed of ring core and winding, which makes the process requirement higher and the structure more complex.

[0004] Therefore, a new technology is needed to solve the problem of long magnetic circuit and large loss of transformer winding in the prior art. UTILITY MODEL CONTENT

[0005] In order to solve the above problems in the prior art, the utility model provides a ring direction iron core winding transformer, which has the effects of short magnetic circuit distance and low loss.

[0006] The utility model adopts the following technical scheme:

[0007] A ring direction iron core winding transformer, comprising a first iron core, a second iron core, an upper layer coil and a lower layer coil, the upper layer coil, the first iron core and the lower layer coil are annular and stacked in order from top to bottom to form a base body, the base body is annular, and the upper layer coil and the lower layer coil are continuously wound by a plurality of layers of copper wire to form a ring direction.

[0008] The second iron core wraps the outer surface of the base body, and the second iron core is continuously spiral wound by silicon steel wire outside the base body and advances along the ring direction of the base body.

[0009] As a further improvement to the technical solution of this utility model, it also includes a coil frame located inside the second iron core. The coil frame is ring-shaped and has a mounting groove with a C-shaped longitudinal section and an outward opening. The base is embedded in the mounting groove, and the coil frame partially surrounds the base.

[0010] As a further improvement to the technical solution of this utility model, the longitudinal cross-section of the first iron core is approximately H-shaped, the upper end face of the first iron core is provided with a first annular groove opening upward, and the lower end face is provided with a second annular groove opening downward. The upper coil is housed in the first annular groove, and the lower coil is housed in the second annular groove.

[0011] As a further improvement to the technical solution of this utility model, it also includes a heat insulation component, which is included on the outer surface of the second iron core.

[0012] As a further improvement to the technical solution of this utility model, the protective layer is a heat insulation material.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] Both the upper and lower coils are copper coils with multi-pitch winding structures, which increases the mutual inductance between inductors, improving frequency response and bandwidth, and resulting in a shorter magnetic circuit. The base structure formed by stacking the upper coil, the first iron core, and the lower coil from top to bottom improves the transformer's permeability and reduces core losses. Iron wire is wound around the outer surface of the base; this combination of iron core and copper coils results in a short magnetic circuit, high transient power, and faster response. Attached Figure Description

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 This is an isometric view of the overall structure of the second iron core of this utility model when it is in the shape of a ring;

[0017] Figure 2 yes Figure 1 A schematic diagram of the cross-section;

[0018] Figure 3 yes Figure 1 A schematic diagram of the longitudinal section;

[0019] Figure 4 This is an exploded view of the structure of this utility model;

[0020] Figure 5 yes Figure 4 A cross-sectional view of the exploded view.

[0021] Figure label:

[0022] 1-First iron core; 11-First annular groove; 12-Second annular groove;

[0023] 2-Second iron core;

[0024] 3-Upper layer coil;

[0025] 4-Lower layer coil;

[0026] 5-Coil frame; 51-Mounting slot. Detailed Implementation

[0027] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0028] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0029] Reference Figures 1 to 5 A circumferentially wound transformer includes a first core 1, a second core 2, an upper coil 3, and a lower coil 4. The upper coil 3, the first core 1, and the lower coil 4 are all ring-shaped and stacked sequentially from top to bottom to form a base. The base is ring-shaped, and this ring structure can be circular or non-circular. Both the upper coil 3 and the lower coil 4 are formed by continuously winding several layers of copper wire in a circumferential manner. The second core 2 wraps around the outer surface of the base. The second core 2 is formed by continuously spirally winding silicon steel wire around the outside of the base and advancing along the circumferential direction of the base. The base is wrapped by spirally wound silicon steel wire. Both the upper coil 3 and the lower coil 4 are copper coils and are multi-pitch winding structures, which can increase the mutual inductance effect between inductors, improve frequency response and bandwidth, and shorten the magnetic circuit. The base structure formed by the upper coil 3, the first core 1, and the lower coil 4 stacked sequentially from top to bottom can improve the transformer's permeability and reduce core losses. The iron wire is wound around the outer surface of the base. This combination of iron core and copper coil structure makes its magnetic circuit short, its transient power high, and its response faster.

[0030] Specifically, the circumferential core wound transformer of this scheme also includes a coil frame 5 located within the second core 2. The coil frame 5 is ring-shaped, and this ring structure can be circular or non-circular. (Refer to...)Figure 3 As shown, the coil frame 5 is provided with a mounting groove 51 with a C-shaped longitudinal section and an outward opening. The groove opening of the mounting groove 51 is horizontally outward. The substrate is embedded in the mounting groove 51, and the coil frame 5 partially surrounds the substrate.

[0031] Specifically, refer to Figure 3 As shown, the longitudinal cross-section of the first iron core 1 is approximately H-shaped or dumbbell-shaped. The upper end face of the first iron core 1 is provided with a first annular groove 11 opening upwards, and the lower end face is provided with a second annular groove 12 opening downwards. The upper coil 3 is housed in the first annular groove 11, and the lower coil 4 is housed in the second annular groove 12. Both the first annular groove 11 and the second annular groove 12 can be circular or non-circular. The first annular groove 11 and the second annular groove 12 are arranged symmetrically vertically.

[0032] Specifically, the circumferential core wound transformer of this scheme also includes a protective layer, which is included on the outer surface of the second core 2. The protective layer is preferably a heat-insulating material, which can be coated on the outer surface of the second core 2 to form the protective layer.

[0033] Other aspects of the circumferential core wound transformer described in this utility model are found in the prior art and will not be repeated here.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A circumferentially wound transformer, characterized in that: It includes a first iron core, a second iron core, an upper coil, and a lower coil. The upper coil, the first iron core, and the lower coil are all ring-shaped and stacked sequentially from top to bottom to form a base. The base is ring-shaped. The upper coil and the lower coil are both formed by continuously winding several layers of copper wire in a ring direction. The second iron core wraps around the outer surface of the substrate. The second iron core is formed by continuously spirally winding silicon steel wire around the outside of the substrate and advancing along the circumference of the substrate.

2. The circumferential core wound transformer according to claim 1, characterized in that: It also includes a coil frame located inside the second iron core. The coil frame is ring-shaped and has a mounting groove with a C-shaped longitudinal section and an outward opening. The base is embedded in the mounting groove and the coil frame partially surrounds the base.

3. The circumferential core wound transformer according to claim 1, characterized in that: The first iron core has an approximately H-shaped longitudinal cross-section. The upper end face of the first iron core is provided with a first annular groove opening upwards, and the lower end face is provided with a second annular groove opening downwards. The upper coil is housed in the first annular groove, and the lower coil is housed in the second annular groove.

4. The circumferential core wound transformer according to claim 1, characterized in that: It also includes a protective layer, which is included on the outer surface of the second iron core.

5. The circumferential core wound transformer according to claim 4, characterized in that: The protective layer is a heat-insulating material.

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