Novel transformer using leakage inductance as resonance

Abstract

The utility model discloses a novel transformer using leakage inductance as resonance, which belongs to the technical field of transformers and comprises a magnetic core body, an I-shaped framework is sleeved on the outer side wall of the magnetic core body, a film-covered wire winding is wound on the outer side wall of the I-shaped framework, a copper sheet winding is sleeved on one side, far away from the I-shaped framework, of the magnetic core body, and the copper sheet winding is wound on the outer side wall of the I-shaped framework. The bottom of the magnetic core body is fixedly connected with a bottom plate. According to the novel transformer using leakage inductance as resonance, the film-covered wire winding is wound on the outer side wall of the I-shaped framework, the I-shaped framework is arranged on the edge pin of the magnetic core body in a sleeving mode, so that a primary winding can be formed, and the copper sheet winding is arranged on the edge pin of the side, away from the film-covered wire winding, of the magnetic core body, so that a secondary winding is formed; a sufficient distance is formed between the primary winding and the secondary winding, so that the leakage inductance requirement is met, the leakage inductance value consistency is good, the primary winding and the secondary winding are in an open state, and the heat dissipation effect of equipment can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to transformer technical field, specifically, relate to a novel transformer using leakage inductance to do resonance. BACKGROUND

[0002] As a key component in power system and electronic equipment, transformer plays a vital role in power transmission, voltage conversion and electrical isolation, etc. With the rapid development of modern science and technology, higher and higher requirements are put forward for the performance and function of transformer.

[0003] In the traditional electronic transformer, when using leakage inductance to do resonance inductance, the primary winding and the secondary winding are usually installed on a magnetic core column respectively, and the primary winding and the secondary winding are pulled apart by a proper distance in order to meet the requirement of leakage inductance, but the two windings are wrapped in the inner cavity of the magnetic core, and the heat generated by the two windings cannot be well dissipated, resulting in the increase of the temperature of the wire package, and further reducing the efficiency of the transformer.

[0004] To solve the above problems, a novel transformer using leakage inductance to do resonance is proposed in the present application. CONTENT OF THE UTILITY MODEL

[0005] In view of the problems in the related art, the utility model proposes a novel transformer using leakage inductance to do resonance to overcome the above technical problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A novel transformer using leakage inductance to do resonance, comprising a magnetic core body, a I-shaped skeleton is sleeved on the outer side wall of the magnetic core body, a film-wrapped wire winding is wound on the outer side wall of the I-shaped skeleton, a copper sheet winding is sleeved on the side of the magnetic core body away from the I-shaped skeleton, and a bottom plate is fixedly connected to the bottom of the magnetic core body.

[0008] Preferably, the magnetic core body comprises a first magnetic core and a second magnetic core, and the first magnetic core and the second magnetic core are symmetrically attached.

[0009] Preferably, the two ends of the film-wrapped wire winding are fixedly connected with first lead-out pins, and the bottom of the copper sheet winding is fixedly connected with a second lead-out pin.

[0010] Preferably, a perforation is formed in the outer side wall of the bottom plate, and the outer side wall of the first lead-out pin and the second lead-out pin is matched with the inner side wall of the perforation.

[0011] Preferably, the first lead-out pin and the second lead-out pin are fixedly welded with the bottom plate.

[0012] Preferably, the copper sheet winding is in the shape of a U.

[0013] In summary, the technical effects and advantages of this utility model are as follows: This novel transformer utilizing leakage inductance for resonance forms a primary winding by winding a film-coated wire around the outer wall of an I-shaped frame and fitting the I-shaped frame onto the edge of the magnetic core body. A secondary winding is formed by placing a copper sheet winding on the edge of the magnetic core body away from the film-coated wire winding. By maintaining a sufficient distance between the primary and secondary windings, the leakage inductance requirement is met, resulting in good consistency of the leakage inductance value. Furthermore, the open state of the primary and secondary windings effectively improves the heat dissipation of the equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the film-coated wire winding and its related structures of this utility model;

[0016] Figure 3 This is a schematic diagram of the exploded structure of this utility model.

[0017] In the diagram: 1. Magnetic core body; 101. First magnetic core; 102. Second magnetic core; 2. I-shaped frame; 3. Film-wrapped wire winding; 4. Copper sheet winding; 5. Base plate; 6. First lead; 7. Second lead; 8. Through hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1-3 A novel transformer utilizing leakage inductance for resonance includes a magnetic core body 1. An I-shaped frame 2 is fitted onto the outer wall of the magnetic core body 1. A film-coated wire winding 3 is wound around the outer wall of the I-shaped frame 2. A copper sheet winding 4 is fitted onto the side of the magnetic core body 1 away from the I-shaped frame 2. A base plate 5 is fixedly connected to the bottom of the magnetic core body 1. By winding the film-coated wire winding 3 around the outer wall of the I-shaped frame 2, the I-shaped frame 2 drives the film-coated wire winding 3 to be fitted onto the edge of the magnetic core body 1. The copper sheet winding 4 is mounted on the side of the magnetic core body 1 away from the film-coated wire winding 3. The distance between the two sides of the magnetic core body 1 is relatively large, which increases the distance between the film-coated wire winding 3 and the copper sheet winding 4. This makes it easier to meet the leakage inductance requirements and ensures good consistency of the leakage inductance value. Since the film-coated wire winding 3 and the copper sheet winding 4 are openly arranged on the outermost layer of the magnetic core body 1, the heat dissipation effect of the film-coated wire winding 3 and the copper sheet winding 4 is improved, thereby ensuring the normal operation of the transformer.

[0020] Reference Figure 3 As shown in Figure 3 , the magnetic core body 1 includes a first magnetic core 101 and a second magnetic core 102. The first magnetic core 101 and the second magnetic core 102 are symmetrically joined. By forming the magnetic core body 1 from the splicing of the first magnetic core 101 and the second magnetic core 102, the first magnetic core 101 and the second magnetic core 102 are made symmetric, the side feet on the outer side walls of the first magnetic core 101 and the second magnetic core 102 are mutually joined, and the first magnetic core 101 and the second magnetic core 102 are adhesively fixed by epoxy resin, facilitating the installation of the windings.

[0021] Reference Figure 2 As shown in Figure 2 , first lead feet 6 are fixedly connected to both ends of the film-insulated wire winding 3, and a second lead foot 7 is fixedly connected to the bottom of the copper sheet winding 4. By providing first lead feet 6 at both ends of the film-insulated wire winding 3 and a second lead foot 7 at the bottom of the copper sheet winding 4, the first lead feet 6 and the second lead foot 7 both face the bottom plate 5, facilitating the connection and fixation of the first lead feet 6 and the second lead foot 7 to the bottom plate 5, and thus facilitating the connection of the transformer.

[0022] Reference Figure 3 As shown in Figure 3 , through holes 8 are formed in the outer side wall of the bottom plate 5, and the outer side walls of the first lead feet 6 and the second lead foot 7 are adapted to the inner side walls of the through holes 8. By providing through holes 8 in the outer side wall of the bottom plate 5 that are adapted to the first lead feet 6 and the second lead foot 7, after the first lead feet 6 and the second lead foot 7 pass through the through holes 8, it is convenient for welding and fixation, and thus it is convenient to fixedly connect the film-insulated wire winding 3 and the copper sheet winding 4 to the bottom plate 5.

[0023] Reference Figure 2 As shown in Figure 2 , the first lead feet 6 and the second lead foot 7 are fixedly welded to the bottom plate 5. By passing the first lead feet 6 and the second lead foot 7 through the bottom plate 5, the parts where the first lead feet 6 and the second lead foot 7 pass through the bottom plate 5 serve as welding foot positions, facilitating the assembly of the film-insulated wire winding 3 and the copper sheet winding 4, and thus the primary winding and the secondary winding can be installed on the outer side wall of the magnetic core body 1.

[0024] Reference Figure 3 As shown in Figure 3 , the copper sheet winding 4 is in a U-shape and is arranged in a U-shape on the side feet of the magnetic core body 1 away from the film-insulated wire winding 3, forming a secondary winding. By increasing the distance between the two side feet of the magnetic core body 1, the leakage inductance requirements between the primary winding and the secondary winding are met, and the leakage inductance values of each product have good consistency.

[0025] Working principle: By winding the membrane-coated wire 3 around the outer wall of the I-shaped frame 2, the first magnetic core 101 and the second magnetic core 102 are inserted into the interior of the I-shaped frame 2, and the I-shaped frame 2 is fitted onto the edges of the first magnetic core 101 and the second magnetic core 102. The first magnetic core 101 and the second magnetic core 102 are bonded and fixed together with epoxy resin, so that the membrane-coated wire winding 3 forms the primary winding. By fitting the copper sheet winding 4 onto the edge of the magnetic core body 1 away from the membrane-coated wire winding 3, the copper sheet winding 4 forms the secondary winding. The membrane-coated wire winding 3 is connected to the base plate 5 through the first lead 6, and the copper sheet winding 4 is connected to the base plate 5 through the second lead 7. The first lead 6 and the second lead 7 pass through the through hole 8 and are welded and fixed to the base plate 5, so that the leakage inductance requirements between the primary winding and the secondary winding can be met. Moreover, the primary winding and the secondary winding are open on the outermost layer, which can effectively improve the heat dissipation of the transformer.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel transformer utilizing leakage inductance for resonance, comprising a magnetic core body (1), characterized in that, An I-shaped skeleton (2) is sleeved on the outer side wall of the magnetic core body (1). A film-covered wire winding (3) is wound around the outer side wall of the I-shaped skeleton (2). A copper sheet winding (4) is sleeved on one side of the magnetic core body (1) away from the I-shaped skeleton (2). A bottom plate (5) is fixedly connected to the bottom of the magnetic core body (1).

2. A novel transformer utilizing leakage inductance for resonance according to claim 1, characterized in that, The magnetic core body (1) includes a first magnetic core (101) and a second magnetic core (102), and the first magnetic core (101) and the second magnetic core (102) are symmetrically fitted together.

3. A novel transformer utilizing leakage inductance for resonance according to claim 1, characterized in that, Both ends of the film-covered wire winding (3) are fixedly connected with first lead-out pins (6), and a second lead-out pin (7) is fixedly connected to the bottom of the copper sheet winding (4).

4. A novel transformer utilizing leakage inductance for resonance according to claim 3, characterized in that, A through hole (8) is formed in the outer side wall of the bottom plate (5), and the outer side walls of the first lead-out pin (6) and the second lead-out pin (7) are adapted to the inner side wall of the through hole (8).

5. A novel transformer utilizing leakage inductance for resonance according to claim 3, characterized in that, The first lead-out pin (6) and the second lead-out pin (7) are fixedly connected to the bottom plate (5) by welding.

6. A novel transformer utilizing leakage inductance for resonance according to claim 1, characterized in that, The copper sheet winding (4) is in a U-shape.

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