Transformer good in temperature characteristic and beneficial to passing of large current

Abstract

The transformer comprises a base, a slot is formed in the upper surface of the base, a magnetic core is fixedly connected to the inner wall of the slot, a primary copper foil winding is fixedly connected to the outer surface of the magnetic core, and a secondary copper foil winding is fixedly connected to the outer surface of the primary copper foil winding. According to the transformer good in temperature characteristic and beneficial to passing of the large current, the manufacturing method of the transformer comprises the steps that the magnetic core is fixed in the base, then 0.3 mm * 30 mm gum copper foil is used for closely winding the magnetic core for four circles to form the primary copper foil winding, then 0.1 mm * 200 P silk-covered wires are used for tightly winding the primary copper foil winding, and the secondary silk-covered wire winding is used for tightly winding the primary copper foil winding for four circles to form the transformer good in temperature characteristic and beneficial to passing of the large current. The primary winding is divided into two groups, each group is densely wound with a primary copper foil winding for 15 circles to form a secondary silk-covered wire winding, and the secondary silk-covered wire winding is covered with a shell to form the power supply boosting transformer, so that the primary winding is made of flat copper foil instead of conventional single or multiple copper wires, the temperature characteristic of the transformer is improved, and large current can conveniently pass through; therefore, the conversion efficiency of the transformer in the power supply equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer with good temperature characteristics which is conducive to the passage of large currents. Background Art

[0002] Transformer is an electrical device that can change the size of AC voltage and is widely used in various fields. As a key component in inverter power supply equipment, transformer directly affects the conversion efficiency of the inverter.

[0003] Most existing transformers use single or multiple copper wires to make the primary winding. Since copper wires are relatively thin, they are not conducive to the passage of large currents and have poor temperature characteristics. At the same time, transformers using copper wires have large leakage inductance, which will cause dissipation of AC magnetic flux, increase the iron loss and copper loss of the transformer, and thus reduce the efficiency of the transformer. Utility Model Content

[0004] The main purpose of the utility model is to provide a transformer with good temperature characteristics that is conducive to the passage of large currents, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A transformer with good temperature characteristics that is conducive to the passage of large currents comprises a base, a slot is provided on the upper surface of the base, a magnetic core is fixedly connected to the inner wall of the slot, a primary copper foil winding is fixedly connected to the outer surface of the magnetic core, and a secondary silk-wrapped wire winding is fixedly connected to the outer surface of the primary copper foil winding.

[0007] In order to achieve the effect of connecting the transformer to the line, as a transformer with good temperature characteristics that is conducive to the passage of large currents in the utility model, the lower surface of the base is fixedly connected with a wire pin, and the lower surface of the wire pin is fixedly connected with a lead wire.

[0008] In order to facilitate the connection of the top cover and the top of the magnetic core, as a transformer with good temperature characteristics that is conducive to the passage of large currents in the utility model, the upper surface of the magnetic core is fixedly connected with the top cover, and the lower surface of the top cover is provided with a central groove.

[0009] In order to achieve the effect of clamping the middle part of the clamping rod, as a transformer with good temperature characteristics that is conducive to the passage of large currents in the utility model, the lower surface of the top cover is provided with side grooves, and the upper surface of the top cover is fixedly connected with a middle clamping seat.

[0010] In order to facilitate the connection of the side frame and the top cover, as a transformer with good temperature characteristics that is conducive to the passage of large currents in the utility model, the side of the top cover is fixedly connected to the side frame, and one side of the side frame is fixedly connected to the insertion strip.

[0011] In order to achieve the effect of fixing the clamp rod, as a transformer with good temperature characteristics that is conducive to the passage of large currents in the utility model, a socket is fixedly connected to the other side of the side frame, and a side clamp seat is fixedly connected to the upper surface of the side frame.

[0012] In order to achieve the effect of strengthening the connection between the top cover and the side frame, as a transformer with good temperature characteristics that is conducive to the passage of large currents in the utility model, a clamping rod is provided on the inner wall of the socket.

[0013] In order to protect the primary copper foil winding and facilitate the heat dissipation, as a transformer with good temperature characteristics that is conducive to the passage of large currents, the inner wall of the side frame is provided with a mounting groove, and the inner wall of the mounting groove is fixedly connected with a protective mesh plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. This temperature characteristic is good for the transformer with large current passing through. Through the arrangement of the base, slots, magnetic core, primary copper foil winding and secondary silk-wrapped winding, the transformer is manufactured by first fixing the magnetic core in the base, and then using 0.3x30mm adhesive-backed copper foil to tightly wind the magnetic core four times to form the primary copper foil winding, and then using silk-wrapped wire 0.1mmx200P, divided into two groups, each tightly winding the primary copper foil winding fifteen times to form the secondary silk-wrapped winding, and then covering the outer shell to form a power step-up transformer. Therefore, the primary winding is made of flat copper foil instead of conventional single or multiple copper wires, which improves the temperature characteristics of the transformer and facilitates the passage of large current, thereby improving the leakage inductance to less than 1%, reducing the dissipation of AC magnetic flux and the iron and copper losses of the transformer, thereby improving the conversion efficiency of the transformer in the power supply equipment.

[0016] 2. This temperature characteristic is good for transformers with large currents passing through. Through the arrangement of the top cover, side grooves, side frames, inserts, sockets, middle card seats, side card seats and card rods, the transformer shell is composed of a top cover, two side frames and two protective mesh plates. The two side frames are inserted into the side grooves of the top cover through the inserts for a preliminary connection, and then the two ends of the card rod are respectively inserted into the sockets of the two side frames, and the card rod body is clamped by the middle card seat and the side card seat, thereby strengthening the connection between the top cover and the side frame, and also facilitating the disassembly and assembly of the transformer and subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a transformer with good temperature characteristics that is conducive to the passage of large currents in Example 1 of the utility model;

[0018] Figure 2 This is a schematic diagram of the axonometric structure of a transformer with good temperature characteristics and good for large current flow in the rear view of the embodiment 1 of the utility model;

[0019] Figure 3 This is a schematic cross-sectional structure diagram of a transformer with good temperature characteristics and good for large current flow, as viewed from the right side of the embodiment 1 of the utility model;

[0020] Figure 4 This is a schematic cross-sectional view of a transformer with good temperature characteristics and good for large current flow in Example 1 of the utility model;

[0021] Figure 5 This is a schematic diagram of the axonometric structure of a transformer with good temperature characteristics and good for large current flow in Example 1 of the utility model, in which the top cover and the side frame are removed;

[0022] Figure 6 This is a schematic diagram of the explosion structure of a magnetic core in a transformer with good temperature characteristics and conducive to the passage of large current in Example 1 of the utility model;

[0023] Figure 7 This is a schematic diagram of the explosion structure of a protective screen in a transformer with good temperature characteristics and good for large current passing through in Example 1 of the utility model;

[0024] Figure 8 This is a schematic diagram of the exploded structure of a side frame in a transformer with good temperature characteristics and conducive to the passage of large current in Example 1 of the utility model.

[0025] In the figure: 1. base; 2. slot; 3. magnetic core; 4. primary copper foil winding; 5. secondary silk-covered wire winding; 6. wire pin; 7. lead wire; 8. top cover; 9. center slot; 10. side slot; 11. side frame; 12. insert strip; 13. socket; 14. middle card seat; 15. side card seat; 16. card rod; 17. installation slot; 18. protective mesh plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] like Figure 1-8 As shown, a transformer with good temperature characteristics that is conducive to the passage of large current includes a base 1, a slot 2 is opened on the upper surface of the base 1, a magnetic core 3 is fixedly connected to the inner wall of the slot 2, a primary copper foil winding 4 is fixedly connected to the outer surface of the magnetic core 3, and a secondary silk-wrapped wire winding 5 is fixedly connected to the outer surface of the primary copper foil winding 4.

[0029] During specific use, through the arrangement of the base 1, the slot 2, the magnetic core 3, the primary copper foil winding 4 and the secondary silk-wrapped winding 5, the material used for the primary copper foil winding 4 is copper foil, and the material used for the secondary silk-wrapped winding 5 is silk-wrapped wire. The transformer is manufactured by first fixing the magnetic core 3 in the base 1, and then using 0.3x30mm adhesive-backed copper foil to densely wind the magnetic core 3 four times to form the primary copper foil winding 4, and then using silk-wrapped wire 0.1mmx200P, divided into two groups, each densely winding fifteen times on the primary copper foil winding 4, to form the secondary silk-wrapped winding 5, and then covering the outer shell to form a power step-up transformer. Therefore, the primary winding is made of flat copper foil instead of conventional single or multiple copper wires, which improves the temperature characteristics of the transformer, facilitates the passage of large current, and then improves the leakage inductance to less than 1%, reduces the dissipation of AC magnetic flux and the iron and copper losses of the transformer, thereby improving the conversion efficiency of the transformer in the power supply equipment.

[0030] In this embodiment, a wire pin 6 is fixedly connected to the lower surface of the base 1 , and a lead wire 7 is fixedly connected to the lower surface of the wire pin 6 .

[0031] When in use, the transformer is connected to the line through the arrangement of the pin 6 and the lead 7 .

[0032] In this embodiment, a top cover 8 is fixedly connected to the upper surface of the magnetic core 3 , and a central groove 9 is formed on the lower surface of the top cover 8 .

[0033] During specific use, the central groove 9 is provided to facilitate the connection between the top cover 8 and the top of the magnetic core 3 .

[0034] In this embodiment, a side groove 10 is formed on the lower surface of the top cover 8 , and a middle card seat 14 is fixedly connected to the upper surface of the top cover 8 .

[0035] During specific use, the middle portion of the clamping rod 16 is clamped by the setting of the middle clamping seat 14 .

[0036] In this embodiment, a side frame 11 is fixedly connected to a side of the top cover 8 , and an insert strip 12 is fixedly connected to one side of the side frame 11 .

[0037] During specific use, the insert strip 12 is provided to facilitate the connection of the side frame 11 and the top cover 8 together.

[0038] In this embodiment, a socket 13 is fixedly connected to the other side of the side frame 11 , and a side socket 15 is fixedly connected to the upper surface of the side frame 11 .

[0039] During specific use, the clamping rod 16 is fixed by setting the socket 13 and the side clamping seat 15.

[0040] In this embodiment, a clamping rod 16 is disposed on the inner wall of the socket 13 .

[0041] During specific use, the connection between the top cover 8 and the side frame 11 is strengthened by setting the clamping rod 16 .

[0042] In this embodiment, a mounting groove 17 is formed on the inner wall of the side frame 11 , and a protective mesh plate 18 is fixedly connected to the inner wall of the mounting groove 17 .

[0043] During specific use, the protection mesh plate 18 is provided to protect the primary copper foil winding 4 and facilitate heat dissipation.

[0044] Working principle: first fix the magnetic core 3 in the base 1, then use 0.3x30mm adhesive-backed copper foil to tightly wind the magnetic core 3 four times to form the primary copper foil winding 4, and then use silk-covered wire 0.1mmx200P, divided into two groups, each tightly wind fifteen turns on the primary copper foil winding 4, to form a secondary silk-covered wire winding 5, and then cover the outer shell to form a power boost transformer.

[0045] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A transformer having good temperature characteristics and being conducive to the passage of large currents, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a slot (2), the inner wall of the slot (2) is fixedly connected to a magnetic core (3), the outer surface of the magnetic core (3) is fixedly connected to a primary copper foil winding (4), and the outer surface of the primary copper foil winding (4) is fixedly connected to a secondary silk-covered wire winding (5).

2. A transformer having good temperature characteristics and being conducive to the passage of large current according to claim 1, characterized in that: A wire foot (6) is fixedly connected to the lower surface of the base (1), and a lead wire (7) is fixedly connected to the lower surface of the wire foot (6).

3. A transformer having good temperature characteristics and being conducive to the passage of large current according to claim 1, characterized in that: A top cover (8) is fixedly connected to the upper surface of the magnetic core (3), and a central groove (9) is provided on the lower surface of the top cover (8).

4. A transformer having good temperature characteristics and being conducive to the passage of large current according to claim 3, characterized in that: The lower surface of the top cover (8) is provided with a side groove (10), and the upper surface of the top cover (8) is fixedly connected with a middle card seat (14).

5. A transformer having good temperature characteristics and being conducive to the passage of large current according to claim 3, characterized in that: A side frame (11) is fixedly connected to the side of the top cover (8), and an insert strip (12) is fixedly connected to one side of the side frame (11).

6. A transformer having good temperature characteristics that is conducive to the passage of large current according to claim 5, characterized in that: A socket (13) is fixedly connected to the other side of the side frame (11), and a side clamping seat (15) is fixedly connected to the upper surface of the side frame (11).

7. A transformer having good temperature characteristics that is conducive to the passage of large current according to claim 6, characterized in that: The inner wall of the socket (13) is provided with a clamping rod (16).

8. A transformer with good temperature characteristics that is conducive to the passage of large current according to claim 5, characterized in that: The inner wall of the side frame (11) is provided with a mounting groove (17), and the inner wall of the mounting groove (17) is fixedly connected with a protective mesh plate (18).

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