阅读说明：本技术 一种嵌入式复合陶瓷材料制备的电子变压器及其制作方法 (Electronic transformer prepared from embedded composite ceramic material and manufacturing method thereof ) 是由 董右云 田正强 于 2021-01-22 设计创作，主要内容包括：本发明涉及电子元器件技术领域,且公开了一种嵌入式复合陶瓷材料制备的电子变压器及其制作方法,包括下磁芯,所述下磁芯的顶部设置有若干个高压层基片和低压层基片,所述高压层基片和低压层基片的顶部与底部均嵌入有嵌入式线圈,所述高压层基片和低压层基片的顶部与底部均粘接有绝缘片,所述下磁芯的顶部栓接有上磁芯,所述高压层基片的顶部与底部均开设有与嵌入式线圈相适配的第一嵌入槽；本发明高压层基片和低压层基片采用复合陶瓷材料作为基材,在安装嵌入式线圈,从而有极好的绝缘和散热特性,提高了变压器的散热性能,加强和提升了安全性。(The invention relates to the technical field of electronic components and discloses an electronic transformer prepared from an embedded composite ceramic material and a manufacturing method thereof, wherein the electronic transformer comprises a lower magnetic core, the top of the lower magnetic core is provided with a plurality of high-voltage layer substrates and low-voltage layer substrates, embedded coils are embedded in the tops and the bottoms of the high-voltage layer substrates and the low-voltage layer substrates, insulating sheets are bonded on the tops and the bottoms of the high-voltage layer substrates and the low-voltage layer substrates, the top of the lower magnetic core is connected with an upper magnetic core in a bolted mode, and the tops and the bottoms of the high-voltage layer substrates are provided with first embedded grooves matched with the embedded coils; the high-voltage layer substrate and the low-voltage layer substrate adopt the composite ceramic material as the base material, and the embedded coil is installed, so that the high-voltage layer substrate and the low-voltage layer substrate have excellent insulation and heat dissipation characteristics, the heat dissipation performance of the transformer is improved, and the safety is enhanced and improved.)

1. An electronic transformer made of embedded composite ceramic material, comprising a lower magnetic core (1), characterized in that: the top of lower magnetic core (1) is provided with a plurality of high-pressure layer substrate (2) and low-pressure layer substrate (3), embedded coil (4) have all been embedded into with the bottom in the top of high-pressure layer substrate (2) and low-pressure layer substrate (3), the top and the bottom of high-pressure layer substrate (2) and low-pressure layer substrate (3) all bond insulating piece (5), the top bolt of lower magnetic core (1) has connect magnetic core (6).

2. The electronic transformer made of embedded composite ceramic material according to claim 1, wherein: and insulating coatings (7) are sprayed on the surfaces of the high-pressure layer substrate (2) and the low-pressure layer substrate (3).

3. The electronic transformer made of embedded composite ceramic material according to claim 1, wherein: the top and the bottom of the high-voltage layer substrate (2) are both provided with first embedded grooves matched with the embedded coils (4).

4. The electronic transformer made of embedded composite ceramic material according to claim 1, wherein: and the top and the bottom of the low-voltage layer substrate (3) are both provided with second embedded grooves matched with the embedded coils (4).

5. The electronic transformer made of embedded composite ceramic material according to claim 1, wherein: the high-pressure layer substrate (2) and the low-pressure layer substrate (3) are both made of ceramic materials.

6. A manufacturing method of an electronic transformer prepared by an embedded composite ceramic material is characterized by comprising the following steps: the method comprises the following steps:

step 1: mixing composite ceramic materials into slurry, preparing a green sheet with required thickness by adopting a tape casting process, cutting the sheet, pressing the sheet into a prefabricated mould, pressing the sheet into an embedded groove with the shape matched with that of the coil (4), and sintering and shaping the sheet to form a substrate;

step 2: placing a designed and formed copper foil coil (4) in the formed substrate embedding slot, and then covering a layer of insulating sheet (5) to form a formed circuit board;

and step 3: and sequentially stacking circuit boards with different functions in a layered mode, leading out coil pins, loading the coil pins into a magnetic core, and fixing, packaging and molding.

Technical Field

The invention relates to the technical field of electronic components, in particular to an electronic transformer prepared from an embedded composite ceramic material and a manufacturing method thereof.

Background

An electronic transformer, also called an electronic power transformer, is an electronic device for transferring energy and converting power, and is also a common device in a circuit. The electronic transformer can generate heat due to iron loss and copper loss, and the performance and technical indexes of the transformer are influenced. Conventionally, conduction heat dissipation is adopted. The heat dissipation path is from the inner copper wire to the insulating material, then to the outer copper wire and then to the outer magnetic core, and the heat is continuously increased through the circulation of multiple layers. The electronic transformer has the safety requirements of insulation strength, creepage distance, electrical spacing and the like, and is difficult to balance and completely meet the requirements due to the small space size in the magnetic core and the low window utilization rate. Especially, the design difficulty of creepage distance and insulation strength is large, the traditional electronic transformer is designed by adopting a framework to isolate a magnetic core, insulating adhesive tapes are arranged between layers, and the outside is wrapped by the insulating adhesive tapes. The purpose is exactly in order to lengthen creepage distance, but heat accumulation is difficult to dispel the heat. In order to solve the problems, an electronic transformer prepared from an embedded composite ceramic material and a manufacturing method thereof are provided.

Disclosure of Invention

The invention aims to provide an electronic transformer prepared from an embedded composite ceramic material and a manufacturing method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an electronic transformer of embedded composite ceramic material preparation, includes magnetic core down, the top of magnetic core is provided with a plurality of high-pressure layer substrate and low-pressure layer substrate down, the top and the bottom of high-pressure layer substrate and low-pressure layer substrate all embed there is embedded coil, the top and the bottom of high-pressure layer substrate and low-pressure layer substrate all bond there is the insulating piece, the top bolt joint of magnetic core has last magnetic core down.

Preferably, the surfaces of the high-pressure layer substrate and the low-pressure layer substrate are sprayed with insulating coatings.

Preferably, the top and the bottom of the high-voltage layer substrate are both provided with first embedded grooves matched with the embedded coils.

Preferably, the top and the bottom of the low-voltage layer substrate are both provided with second embedded grooves matched with the embedded coils.

Preferably, the high-pressure layer substrate and the low-pressure layer substrate are both made of ceramic materials.

A manufacturing method of an electronic transformer prepared by an embedded composite ceramic material comprises the following steps:

step 1: mixing composite ceramic materials into slurry, preparing a green sheet with required thickness by adopting a tape casting process, then cutting the sheet, pressing the sheet into a prefabricated mould, pressing the sheet into an embedded groove matched with the shape of the coil, and then sintering and shaping to form a substrate;

step 2: placing a designed and formed copper foil coil in the formed substrate embedding slot, and then covering a layer of insulating sheet to form a formed circuit board;

and step 3: and sequentially stacking circuit boards with different functions in a layered mode, leading out coil pins, loading the coil pins into a magnetic core, and fixing, packaging and molding.

Compared with the prior art, the invention has the following beneficial effects:

the high-voltage layer substrate and the low-voltage layer substrate adopt the composite ceramic material as the base material, and the embedded coil is installed, so that the high-voltage layer substrate and the low-voltage layer substrate have excellent insulation and heat dissipation characteristics, the heat dissipation performance of the transformer is improved, and the safety is enhanced and improved.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded perspective view of the present invention;

fig. 3 is a partial front view of the present invention.

In the figure: 1. a lower magnetic core; 2. a high-pressure layer substrate; 3. a low-pressure layer substrate; 4. an embedded coil; 5. an insulating sheet; 6. an upper magnetic core; 7. and (4) insulating coating.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, an electronic transformer made of an embedded composite ceramic material includes a lower magnetic core 1, a plurality of high-voltage layer substrates 2 and low-voltage layer substrates 3 are disposed on the top of the lower magnetic core 1, embedded coils 4 are embedded in the top and bottom of the high-voltage layer substrates 2 and the low-voltage layer substrates 3, insulating sheets 5 are bonded on the top and bottom of the high-voltage layer substrates 2 and the low-voltage layer substrates 3, and an upper magnetic core 6 is bolted to the top of the lower magnetic core 1.

Preferably, the insulating coating 7 may be sprayed on the surfaces of the high-voltage layer substrate 2 and the low-voltage layer substrate 3 of the present invention, so that the copper coil may be prevented from being oxidized.

Further, the top and the bottom of high-voltage layer substrate 2 are all provided with the first embedded groove that matches embedded coil 4, and through setting up first embedded groove, embedded coil 4 can be effectively cooperated and use.

Further, the top and the bottom of low-voltage layer substrate 3 are all provided with the second embedded groove matched with embedded coil 4, and through the second embedded groove, embedded coil 4 can be effectively matched for use.

Further, the high-voltage layer substrate 2 and the low-voltage layer substrate 3 are both made of a ceramic material, and can have excellent insulating and heat dissipating characteristics.

The invention relates to a method for manufacturing an electronic transformer prepared from an embedded composite ceramic material, which comprises the following steps:

step 1: mixing composite ceramic materials into slurry, preparing a green sheet with required thickness by adopting a tape casting process, cutting the sheet, pressing the sheet into a prefabricated mould, pressing the sheet into an embedded groove with a shape matched with that of the coil 4, and sintering and shaping the sheet to form a substrate;

step 2: placing a designed and formed copper foil coil 4 in the formed substrate embedding slot, and then covering a layer of insulating sheet 5 to form a formed circuit board;

and step 3: and sequentially stacking circuit boards with different functions in a layered mode, leading out coil pins, loading the coil pins into a magnetic core, and fixing, packaging and molding.

The working principle is as follows: the high-voltage layer substrate 2 and the low-voltage layer substrate 3 adopt the composite ceramic material as the substrate, and the embedded coil 4 is installed, so that the high-voltage layer substrate and the low-voltage layer substrate have excellent insulating and heat-radiating characteristics, the heat-radiating performance of the transformer is improved, and the safety is enhanced and improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.