CN210984481U - SMD transformer of segmentation magnetic core - Google Patents
SMD transformer of segmentation magnetic core Download PDFInfo
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- CN210984481U CN210984481U CN201921895799.XU CN201921895799U CN210984481U CN 210984481 U CN210984481 U CN 210984481U CN 201921895799 U CN201921895799 U CN 201921895799U CN 210984481 U CN210984481 U CN 210984481U
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- 230000011218 segmentation Effects 0.000 title claims abstract description 6
- 239000003292 glue Substances 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of transformers, specifically be a SMD transformer of segmentation magnetic core, including E type magnetic core, including shape body framves and middle part magnetic core body, I type magnetic core, with E type magnetic core cooperation sets up, the base is equipped with the holding the I type magnetic core holding chamber of I type magnetic core, the support is located the base top is equipped with the holding the magnetic core chamber of middle part magnetic core body, middle part magnetic core body includes a plurality of magnetic core sections, adjacent two be equipped with the non-magnetic dielectric layer between the magnetic core section, the magnetic core section with the non-magnetic dielectric layer adopts the bonding of heat conduction glue to connect.
Description
Technical Field
The utility model relates to a transformer technical field specifically is a SMD transformer of segmentation magnetic core.
Background
The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and is composed of an iron core (or a magnetic core) and a coil, wherein the coil is provided with two or more than two windings, the winding connected with a power supply is called a primary coil, and the other windings are called secondary coils. In the transformer with the magnetic core, the structural design of the magnetic core has a significant influence on the performance of the transformer, such as power. In the transformer in the prior art, the magnetic core mostly adopts a design scheme of a single air gap, namely, only one layer of air gap is arranged between two halves of the magnetic core. The rated current of the transformer is correspondingly increased along with the power of the power supply, and in order to prevent the magnetic core from being saturated, the air gap amount of the magnetic core is increased from about 1mm to more than 8mm, so that the leakage flux at the air gap is very large, and the efficiency of the transformer is lowered.
In addition, the miniaturization of transformers is more and more advanced, and the miniaturization of transformers is developed by high-density surface-mounted miniature transformers.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that prior art exists, a SMD transformer of segmentation magnetic core is proposed.
The utility model provides a technical scheme that its technical problem adopted is: a patch type transformer with segmented magnetic core comprises
The E-shaped first magnetic core comprises an -shaped main frame and a middle magnetic core body;
the I-shaped second magnetic core is matched with the E-shaped first magnetic core;
the base is provided with an I-shaped second magnetic core accommodating cavity for accommodating the I-shaped second magnetic core;
the bracket is arranged at the top of the base and is provided with a magnetic core cavity for accommodating the middle magnetic core body;
the middle magnetic core body comprises a plurality of magnetic core sections, a non-magnetic medium layer is arranged between every two adjacent magnetic core sections, and the magnetic core sections and the non-magnetic medium layer are bonded and connected through heat-conducting glue.
Preferably, the thickness of the non-magnetic medium layer is 0.5 to 1 mm.
Preferably, the non-magnetic dielectric layer includes a ceramic layer.
Preferably, the thickness of the magnetic core segment is 8 to 12 mm.
Preferably, the central magnetic core body comprises four magnetic core segments and three non-magnetic medium layers, wherein one of the magnetic core segments is integrally formed with the -shaped main frame.
Preferably, the cross section of the bracket is circular, the -shaped main frame comprises two side magnetic core bodies, and the inner sides of the side magnetic core bodies are arc-shaped.
Preferably, it further comprises
The winding terminal parts are arranged on two sides of the base;
and the pins are connected with the bottom surface of the winding terminal part and are bent in a flat shape.
Preferably, a point colloid is arranged at the connection part of the pin and the winding terminal part.
Preferably, the pin comprises
The connecting section is used for being connected with the winding terminal part;
the welding section is used for welding with the circuit board;
the transition section is used for connecting the connecting section and the welding section, and the projections of the two end parts of the transition section on the horizontal plane are staggered;
the connecting section, the welding section and the transition section are located on the same vertical plane.
Advantageous effects
According to the transformer, the E-shaped first magnetic core and the I-shaped second magnetic core can be isolated in an insulating mode through the base and the support, so that an air gap is formed between the E-shaped first magnetic core and the I-shaped second magnetic core, the saturation current is improved, and the air gap structure is changed in a mode that the magnetic core section and the non-magnetic medium layer are arranged at intervals, so that the edge effect generated by the air gap is reduced, the magnetic path loss caused by magnetic leakage and the air gap is reduced, and the service life of the transformer is prolonged; this application adopts the platykurtic to bend the pin that sets up, has reduced the overall height of transformer on the one hand to improve the space utilization of transformer, on the other hand, improved the connection stability of transformer.
Drawings
Fig. 1 is a schematic diagram of a distributed structure of a patch type transformer of a segmented magnetic core according to the present application;
fig. 2 is an overall side view of the transformer of fig. 1.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1 and 2, a patch transformer with segmented magnetic cores includes an E-type first magnetic core 1, an I-type second magnetic core 2, a base 3 and a support 4, where the E-type first magnetic core 1 includes an -shaped main frame and a middle magnetic core, the I-type second magnetic core 2 is disposed in cooperation with the E-type first magnetic core 1, the base 3 is provided with an I-type second magnetic core accommodating cavity for accommodating the I-type second magnetic core 2, the support 4 is disposed on the top of the base 3 and is provided with a magnetic core cavity 41 for accommodating the middle magnetic core, the support 4 is made of an insulating material, such as resin, the E-type first magnetic core 1 and the I-type second magnetic core 2 may be made of a manganese-zinc ferrite material, and the E-type first magnetic core 1 and the I-type second magnetic core 2 may be insulated and isolated by the base 1 and the support 4, so that an air gap is formed between the E-type first magnetic core 1 and the I-type second magnetic core.
The middle magnetic core body comprises a plurality of magnetic core sections 11, a non-magnetic medium layer 12 is arranged between every two adjacent magnetic core sections 11, and the magnetic core sections 11 and the non-magnetic medium layers 12 are bonded and connected through heat conducting glue. The thickness of the magnetic core segment is 8 to 12 mm, and can be 10 mm. The air gap structure is changed in the mode that the magnetic core section 11 and the non-magnetic medium layer 12 are arranged at intervals, so that the edge effect generated by the air gap is reduced, the magnetic path loss caused by magnetic leakage and the air gap is reduced, and the service life of the transformer is prolonged.
The non-magnetic medium layer 12 includes a ceramic layer, and the thickness of the non-magnetic medium layer 12 is 0.5 to 1mm, and may be 0.6 mm. This application adopts the material of high coefficient of thermal conductivity to insert between magnetic core section 11 as non-magnetic medium layer 12 to bond them each other through heat-conducting glue and form an organic whole, improved the inside temperature of middle part magnetic core body greatly, improved the reliability of product.
The middle magnetic core body comprises four magnetic core sections 11 and three non-magnetic medium layers 12, wherein one magnetic core section 11 and the -shaped main frame are integrally formed, and the effect of reducing magnetic leakage can be optimal by additionally arranging three small air gaps.
The cross section of the support 4 is in a circular ring shape, the -shaped main frame comprises two side magnetic core bodies, the inner sides of the side magnetic core bodies are in an arc shape and are matched with the shape of the winding, and the functions of limiting and improving the service performance of the transformer are achieved.
The winding terminal part 5 is arranged on two sides of the base 3, and the pins 6 are connected with the bottom surface of the winding terminal part 5 and are bent in a flat shape. The pins 6 of the structure can reduce the overall height of the transformer, thereby improving the space utilization rate of the transformer.
The connection part of the pin 6 and the winding terminal part 5 is provided with the point colloid, so that the pin 6 can be prevented from loosening during bending, the stability of the transformer is improved, and the falling resistance of the pin 6 is improved.
The pin 6 includes a connection section, a soldering section and a transition section. The connecting section is used for being connected with the winding terminal part 5, the welding section is used for being welded with a circuit board, the transition section is used for being connected with the connecting section and the welding section, the projections of the two end parts of the transition section on the horizontal plane are staggered, and the connecting section, the welding section and the transition section are located on the same vertical plane. The pin 6 of the structure improves the connection stability of the transformer.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.
Claims (9)
1. The utility model provides a SMD transformer of segmentation magnetic core which characterized in that: comprises that
The E-shaped first magnetic core (1) comprises an -shaped main frame and a middle magnetic core body;
the I-shaped second magnetic core (2) is matched with the E-shaped first magnetic core (1);
the base (3) is provided with an I-shaped magnetic core accommodating cavity for accommodating the I-shaped second magnetic core (2);
the bracket (4) is arranged at the top of the base (3) and is provided with a magnetic core cavity (41) for accommodating the middle magnetic core body;
the middle magnetic core body comprises a plurality of magnetic core sections (11), a non-magnetic medium layer (12) is arranged between every two adjacent magnetic core sections (11), and the magnetic core sections (11) are bonded with the non-magnetic medium layer (12) through heat-conducting glue.
2. The patch transformer of claim 1, wherein: the thickness of the non-magnetic medium layer (12) is 0.5 to 1 mm.
3. The patch transformer of claim 2, wherein: the non-magnetic dielectric layer includes a ceramic layer.
4. The patch transformer of claim 1, wherein: the thickness of the magnetic core segment is 8 to 12 millimeters.
5. The patch transformer of the segmented magnetic core according to claim 1, wherein the central magnetic core body comprises four magnetic core segments (11) and three non-magnetic dielectric layers (12), and one of the magnetic core segments (11) is integrally formed with the -shaped main frame.
6. The patch transformer with the segmented magnetic core according to claim 1, wherein the cross section of the support (4) is circular, the -shaped main frame comprises two side magnetic core bodies, and the inner sides of the side magnetic core bodies are arc-shaped.
7. The patch transformer of claim 1, wherein: also comprises
The winding terminal parts (5) are arranged on two sides of the base (3);
and the pins (6) are connected with the bottom surface of the winding terminal part (5) and are bent in a flat shape.
8. The patch transformer of claim 7, wherein: and point colloid is arranged at the joint of the pin (6) and the winding terminal part (5).
9. The patch transformer of claim 7, wherein: the pin (6) comprises
The connecting section is used for being connected with the winding terminal part (5);
the welding section is used for welding with the circuit board;
the transition section is used for connecting the connecting section and the welding section, and the projections of the two end parts of the transition section on the horizontal plane are staggered;
the connecting section, the welding section and the transition section are located on the same vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921895799.XU CN210984481U (en) | 2019-11-06 | 2019-11-06 | SMD transformer of segmentation magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921895799.XU CN210984481U (en) | 2019-11-06 | 2019-11-06 | SMD transformer of segmentation magnetic core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210984481U true CN210984481U (en) | 2020-07-10 |
Family
ID=71424146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921895799.XU Expired - Fee Related CN210984481U (en) | 2019-11-06 | 2019-11-06 | SMD transformer of segmentation magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210984481U (en) |
-
2019
- 2019-11-06 CN CN201921895799.XU patent/CN210984481U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200710 |