CN217768088U

CN217768088U - Miniature transformer for photovoltaic

Info

Publication number: CN217768088U
Application number: CN202221871082.3U
Authority: CN
Inventors: 王志敏; 牛其福; 金潇锋; 王伟锋; 许哲凯
Original assignee: Haining Ruisi Technology Co ltd
Current assignee: Haining Ruisi Technology Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-11-08
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a miniature transformer for photovoltaic, including magnetic core, primary side and secondary side, the magnetic core includes upper magnetic core and lower magnetic core, upper magnetic core and lower magnetic core correspond the position and are equipped with the fluting respectively, the fluting position matches the installation base, the base is used for fixing and drawing forth the winding wire of primary side and secondary side; a leakage inductance section between the primary side and the secondary side is arranged in the middle of the lower magnetic core; and a plurality of glue dispensing grooves are correspondingly arranged on the connecting end surfaces of the upper magnetic core and the lower magnetic core respectively. The utility model discloses a no skeleton texture, the integrated inductance design of magnetism, magnetic core set up the fluting and place the base fixed and draw forth former limit and secondary winding, set up the point on the magnetic core and glue the recess, glue the back glue and glue totally in the recess, do not have the influence to the inductance value of transformer, and need not to install the inductor alone, reduce spare part, just overall structure is compacter, more miniaturized.

Description

Miniature transformer for photovoltaic

Technical Field

The utility model relates to a transformer field, concretely relates to transformer for miniature photovoltaic.

Background

At present, a transformer is a common device for isolation and coupling transmission in electrical and signal conversion technologies, and a conventional wire-wound transformer is usually formed by winding a ferrite core, a transformer bobbin, and a conductor. The utilization rate of a magnetic core window wound by the transformer framework is low, and the inductance of the existing transformer after glue dispensing is obviously reduced, so that the inductance of the whole transformer is influenced. With the development of modernization becoming faster and faster, the requirements of the photovoltaic field on transformers are higher, and miniaturization, magnetic integration and the like become urgent requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a miniature transformer for photovoltaic is provided, adopt no skeleton texture, the integrated inductance design of magnetism, the magnetic core sets up the fluting and places the base fixed and draw forth former limit and secondary winding, sets up the point on the magnetic core and glues the recess, glues entirely in the recess after the point, does not have the influence to the inductance value of transformer, and need not to install the inductor alone, reduces spare part, and just overall structure is compacter, more miniaturized.

The utility model provides a technical scheme that technical problem adopted is: a micro photovoltaic transformer comprises a magnetic core, a primary side and a secondary side, wherein the magnetic core comprises an upper magnetic core and a lower magnetic core, the corresponding positions of the upper magnetic core and the lower magnetic core are respectively provided with a slot, the slot positions are matched with a mounting base, and the base is used for fixing and leading out winding wires of the primary side and the secondary side; a leakage inductance section between the primary side and the secondary side is arranged in the middle of the lower magnetic core; and a plurality of glue dispensing grooves are correspondingly arranged on the connecting end surfaces of the upper magnetic core and the lower magnetic core respectively.

Preferably, a fixing pin is arranged below the base, and a fixing groove matched with the fixing pin for positioning is formed in the lower magnetic core.

Preferably, the depth of the dispensing groove is 0.05-0.3 mm, and the length of the dispensing groove is 1-3 mm.

Preferably, the base is provided with two through holes matched with the outgoing lines of the primary winding wire, and the end part of the base is provided with an outgoing line groove matched with the outgoing lines of the secondary winding wire.

Preferably, the number of the dispensing grooves is 3.

Preferably, the primary side is covered by a hot-melt wire, and the secondary side is a hot-melt three-layer insulated wire.

The utility model discloses the height of leaking the sense section in the middle of the primary side and the secondary side through the adjustment, the volume of feeling that leaks of adjustment primary side, secondary side, primary side, secondary side leak the sense volume and can regard as the output inductance to use, can reach magnetic element and parts integration and cost control.

Adopt no skeleton texture, magnetism integrated inductance design scheme sets up the fluting at upper and lower magnetic core and places the base and be used for fixed and draw forth former limit and vice limit winding, set up the point on the magnetic core is connected the face and is glued the recess, glue the back and glue in the recess entirely, do not have the influence to the inductance value of transformer, be equipped with the leakage inductance section between former limit and the vice limit in the middle of the magnetic core down, can regard as the inductor to use, need not to install the inductor alone promptly, spare part has been reduced, make overall structure compacter, it is more miniaturized.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is an exploded view of embodiment 1 of the present invention.

Fig. 3 is a schematic structural diagram of the magnetic core according to embodiment 1 of the present invention.

Fig. 4 is a schematic structural diagram of the base according to embodiment 1 of the present invention.

Fig. 5 is a schematic structural diagram of a primary side according to embodiment 1 of the present invention.

Fig. 6 is a schematic structural diagram of a secondary side according to embodiment 1 of the present invention.

Wherein, 1, an upper magnetic core; 2. a lower magnetic core; 3. a primary side; 4. a secondary side; 5. a base; 6. dispensing a groove; 7. a fixing leg; 8. fixing grooves; 9. a through hole; 10. a leakage inductance section; 11. and (4) an outlet groove.

The present invention will be further explained with reference to the accompanying drawings.

Detailed Description

Example 1: the miniature photovoltaic transformer comprises a magnetic core, a primary side 3 and a secondary side 4, wherein the magnetic core comprises an upper magnetic core 1 and a lower magnetic core 2, and the types of the magnetic cores are P52/18.5 and P53/31.0. The primary side 3 is wrapped by a hot melt wire, the secondary side 4 is a hot melt three-layer insulated wire and is wound by an automatic winding machine, and the consistency and the production efficiency of products are improved. The positions of the upper magnetic core 1 and the lower magnetic core 2 corresponding to each other are respectively provided with a groove, the positions of the grooves are matched with a base 5, and the base 5 is used for fixing and leading out winding wires of the primary side 3 and the secondary side 4; two through holes 9 are formed in the base 5 and matched with outgoing lines of winding wires of the primary side 3, and an outgoing line groove 11 matched with outgoing lines of winding wires of the secondary side 4 is formed in the end portion of the base 5. The base 5 below is equipped with fixed foot 7, be equipped with down on the magnetic core 2 and match the fixed slot 8 of location with fixed foot 7, fix through the point glue between fixed foot 7 and the fixed slot 8 and fix. The middle of the lower magnetic core 2 is provided with a leakage inductance section 10 between the primary side 3 and the secondary side 4, which can be used as an inductor, and the primary side and the secondary side can adjust the leakage inductance of the primary side and the secondary side by grinding the height (such as a hatching area in fig. 3) of the middle leakage inductance section. Go up and correspond on the connection terminal surface of magnetic core 1 and lower magnetic core 2 respectively and be equipped with 3 point and

glue recess

6, 6 degree of depth of gluing recess is 0.2mm, and length is 3mm.

Example 2: in the second micro photovoltaic transformer, the depth of the dispensing groove 6 is 0.1mm, and the length is 2mm. The rest is the same as in example 1.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalent changes and modifications may be made to some of the technical features of the embodiments, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principles of the present invention are all within the scope of the present invention.

Claims

1. The utility model provides a miniature transformer for photovoltaic, includes magnetic core, primary (3) and secondary (4), its characterized in that: the magnetic cores comprise an upper magnetic core (1) and a lower magnetic core (2), slots are respectively arranged at corresponding positions of the upper magnetic core (1) and the lower magnetic core (2), the slots are matched with a base (5), and the base (5) is used for fixing and leading out winding wires of the primary side (3) and the secondary side (4); a leakage inductance section (10) between the primary side (3) and the secondary side (4) is arranged in the middle of the lower magnetic core (2); a plurality of glue dispensing grooves (6) are correspondingly formed in the connecting end faces of the upper magnetic core (1) and the lower magnetic core (2) respectively.

2. A miniature photovoltaic transformer as recited by claim 1, wherein: base (5) below is equipped with fixed foot (7), be equipped with down fixed slot (8) that match the location with fixed foot (7) on magnetic core (2).

3. A miniature photovoltaic transformer as recited by claim 1, wherein: the depth of the dispensing groove (6) is 0.05-0.3 mm, and the length is 1-3 mm.

4. A miniature photovoltaic transformer as claimed in claim 1, wherein: two through holes (9) are formed in the base (5) and are matched with winding wire outgoing lines of the primary side (3), and wire outgoing grooves (11) matched with winding wire outgoing lines of the secondary side (4) are formed in the end portion of the base (5).

5. A miniature photovoltaic transformer as recited by claim 1, wherein: the number of the dispensing grooves (6) is 3.

6. A miniature photovoltaic transformer as recited by claim 1, wherein: the primary side (3) adopts a hot-melt covered wire, and the secondary side (4) adopts a hot-melt three-layer insulated wire.