CN209804422U

CN209804422U - low-cost high-power transformer

Info

Publication number: CN209804422U
Application number: CN201920350937.XU
Authority: CN
Inventors: 张志刚
Original assignee: Xiamen Coster Electronics Industry Co Ltd
Current assignee: Xiamen Kesite Electronics Co ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2019-12-17
Anticipated expiration: 2029-03-19

Abstract

the utility model discloses a low-cost high-power transformer, which comprises a framework, a magnetic core, a primary coil, a PCB (printed circuit board) and two U-shaped secondary copper foils; the magnetic core is arranged in the framework, the primary coil is wound on the framework and the first layer of the magnetic core, the two U-shaped secondary copper foils are arranged in the framework and the second layer of the magnetic core simultaneously, conducting strips extend out of two ends of the two secondary copper foils respectively, the PCB is arranged at the bottom of the framework, the conducting strips of the two secondary copper foils are electrically connected to the PCB after being arranged in the framework, the two U-shaped secondary copper foils are electrically conducted to form a secondary coil structure, and the outer sides of the two secondary copper foils are wrapped with insulating adhesive tapes. The utility model discloses a transformer structure is simple easily to be made, has solved the problem that current high-power vertical power transformer production efficiency is low, the yields is low and with high costs simultaneously.

Description

low-cost high-power transformer

Technical Field

the utility model relates to a transformer, in particular to high-power transformer of low-cost.

Background

The conventional high-power vertical power transformer has the problems that the manufacturing process is very complex, coils need to be welded, the manufacturing speed is very low, the manufacturing efficiency is low, the yield is influenced, and the structural characteristics are unstable due to abnormal winding and welding, so that the production cost is relatively high and the yield is low.

In order to solve the above problems, the present inventors provide a high power transformer with a very simple manufacturing process and a manufacturing method thereof, which change the precise and complicated welding and winding into fool assembly production without worrying about any problems of winding abnormality, poor production process caused by welding abnormality and material scrapping cost caused by poor characteristics.

SUMMERY OF THE UTILITY MODEL

a primary object of the present invention is to provide a low-cost high-power transformer to solve the problems of low production efficiency, low yield and high cost of the existing high-power vertical power transformer.

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

a low-cost high-power transformer comprises a framework, a magnetic core, a primary coil, a PCB and two U-shaped secondary copper foils; the magnetic core is arranged in the framework, the primary coil is wound on the framework and the first layer of the magnetic core, the two U-shaped secondary copper foils are arranged in the framework and the second layer of the magnetic core simultaneously, conducting strips extend out of two ends of the two secondary copper foils respectively, the PCB is arranged at the bottom of the framework, the conducting strips of the two secondary copper foils are electrically connected to the PCB after being arranged in the framework, the two U-shaped secondary copper foils are electrically conducted to form a secondary coil structure, and the outer sides of the two secondary copper foils are wrapped with insulating adhesive tapes.

Furthermore, conductive holes are formed in the PCB corresponding to the conductive sheets of the two secondary copper foils.

Further, the primary coil adopts a single strand copper wire or a multi-strand copper wire.

furthermore, the periphery of the framework is also covered with an insulating tape.

further, the framework and the magnetic core adopt ER series or PQ series.

Furthermore, an ACT isolation sheet is coated at the outgoing line position of one of the secondary copper foils.

The manufacturing method of the low-cost high-power transformer comprises the following steps:

Firstly, fixing a framework on a winding machine, and winding a primary coil on the framework;

After the primary coil is wound, bending two pieces of secondary copper foils into a U shape, wrapping an insulating tape on the secondary copper foils, and assembling the two pieces of secondary copper foils on the framework;

thirdly, installing a PCB base at the bottom of the framework, and electrically connecting the conducting strips at two ends of the two secondary copper foils to the PCB base;

And fourthly, mounting the magnetic core on the framework wound with the wire, fixing the magnetic core by using an insulating adhesive tape, and coating the insulating adhesive tape around the framework.

Furthermore, in the second step, two U-shaped secondary copper foils are inserted into the framework from top to bottom simultaneously, so that the conducting strips at two ends of the secondary copper foils penetrate into the PCB board downwards.

After the technical scheme is adopted, the utility model has the advantages that as follows:

the utility model discloses a secondary coil structure is made to two U type copper foil cooperation PCB boards, has changed fool's equipment production into by accurate complicated welding coiling, has avoided the problem that the production technology that secondary coil coiling is unusual to cause with the welding is bad and the characteristic is bad, and then greatly reduced material scrap probability, has reduced manufacturing cost, saves secondary coil's coiling process simultaneously, and preparation technology and structure are all simplistic, and production efficiency promotes by a wide margin.

Drawings

Fig. 1 is a structural diagram of the transformer of the present invention;

FIG. 2 is a schematic diagram of the electrical structure of the present invention;

Fig. 3 is a top view of the present invention;

Fig. 4 is a bottom view of the present invention;

Fig. 5 is a side view of the present invention;

Fig. 6 is a rear view of the present invention;

fig. 7 is a view showing the expanded state of the secondary copper foil N2 according to the present invention;

Fig. 8 is a development state view of the secondary copper foil N3 of the present invention;

fig. 9 is a view showing a bent state of the secondary copper foil N2 according to the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-6, the present invention discloses a low-cost high-power transformer, which comprises a frame 1, a magnetic core 2, a primary coil N1, a PCB 3, two U-shaped secondary copper foils N2 and N3; the magnetic core 2 is arranged in the framework 1, the primary coil N1 is wound on the first layer of the framework 1 and the magnetic core 2, two U-shaped secondary copper foils N2 and N3 are arranged in the second layer of the framework 1 and the magnetic core 2 at the same time, two conducting strips extend from two ends of the two secondary copper foils N2 and N3 respectively, the PCB board 3 is arranged at the bottom of the framework 1, the two conducting strips 4 of the two secondary copper foils N2 and N3 are electrically connected to the PCB board 3 after being arranged, the two U-shaped secondary copper foil conducting strips 4 are electrically conducted to form a secondary coil structure, and the outer sides of the two secondary copper foil conducting strips 4 are wrapped with insulating tapes 5.

furthermore, the PCB 3 is provided with conductive holes 31 corresponding to the conductive sheets 4 of the two secondary copper foils N2 and N3. The outgoing line position on the secondary copper foil N1 is coated with an ACT isolation sheet 6 to isolate the secondary copper foil N2, so that the adverse effect of high voltage is avoided.

Further, the primary coil N1 is made of a single strand of copper wire or a multi-strand of copper wire.

furthermore, the periphery of the framework 1 is also covered with an insulating tape 5.

Further, ER series or PQ series is used for the bobbin 1 and the magnetic core 2.

The utility model has the structural characteristics that: the secondary coil structure is manufactured by matching the two U-shaped copper foils N2 and N3 with the PCB 3, the accurate and complex welding and winding are changed into fool assembly production, the problems of poor production process and poor characteristics caused by the winding abnormality and the welding abnormality of the secondary coil are avoided, the material scrapping probability is greatly reduced, and the manufacturing cost is reduced.

Firstly, fixing a framework 1 on a winding machine, and winding a primary coil N1 on the framework 1;

Secondly, after the primary coil N1 is wound, referring to fig. 7-9, two pieces of secondary copper foils N2 and N3 are bent into a U shape, then the secondary copper foils N2 and N3 are wrapped with insulating tapes 5, and then the two pieces of secondary copper foils N2 and N3 are sequentially assembled on the framework 1;

Thirdly, installing a PCB base 3 at the bottom of the framework 1, and electrically connecting the conducting strips at two ends of the two secondary copper foils to the PCB base; specifically, two U-shaped secondary copper foils N2 and N3 are inserted into the framework 1 from top to bottom simultaneously, so that the conducting strips 4 at two ends of the secondary copper foils N2 and N3 penetrate into the PCB 3 downwards, the step does not need to be wound, the operation is simple, and the conducting strips 4 are only required to be welded after being inserted into the PCB.

Fourthly, the magnetic core 2 is arranged on the framework 1 which is wound with wires and is provided with secondary copper foils N2 and N3, finally the magnetic core 2 is fixed by an insulating adhesive tape 5, and the periphery of the framework 1 is coated with the insulating adhesive tape 5.

According to the manufacturing method, the utility model discloses a high-power transformer has saved the coiling process of secondary coil, and preparation technology and mechanism are all simplified, and production efficiency can promote by a wide margin.

the basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A low-cost high-power transformer is characterized in that: the transformer comprises a framework, a magnetic core, a primary coil, a PCB and two U-shaped secondary copper foils; the magnetic core is arranged in the framework, the primary coil is wound on the framework and the first layer of the magnetic core, the two U-shaped secondary copper foils are arranged in the framework and the second layer of the magnetic core simultaneously, conducting strips extend out of two ends of the two secondary copper foils respectively, the PCB is arranged at the bottom of the framework, the conducting strips of the two secondary copper foils are electrically connected to the PCB after being arranged in the framework, the two U-shaped secondary copper foils are electrically conducted to form a secondary coil structure, and the outer sides of the two secondary copper foils are wrapped with insulating adhesive tapes.

2. A low cost high power supply transformer according to claim 1, characterized by: and conductive holes are formed in the PCB corresponding to the conductive sheets of the two secondary copper foils.

3. A low cost high power supply transformer according to claim 1, characterized by: the primary coil adopts a single strand copper wire or a multi-strand copper wire.

4. A low cost high power supply transformer according to claim 1, characterized by: the periphery of the framework is also covered with an insulating tape.

5. A low cost high power supply transformer according to claim 1, characterized by: the framework and the magnetic core adopt ER series or PQ series.

6. A low cost high power supply transformer according to claim 1, characterized by: and an ACT isolating sheet is coated at the outgoing line position on one secondary copper foil.