CN219936822U - Transformer structure for improving withstand voltage - Google Patents
Transformer structure for improving withstand voltage Download PDFInfo
- Publication number
- CN219936822U CN219936822U CN202321423376.4U CN202321423376U CN219936822U CN 219936822 U CN219936822 U CN 219936822U CN 202321423376 U CN202321423376 U CN 202321423376U CN 219936822 U CN219936822 U CN 219936822U
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- magnetic core
- zinc ferrite
- withstand voltage
- shell
- transformer
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- 229920001342 Bakelite® Polymers 0.000 claims abstract description 29
- 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 claims abstract description 29
- 239000004637 bakelite Substances 0.000 claims abstract description 29
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000002390 adhesive tape Substances 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011701 zinc Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Soft Magnetic Materials (AREA)
Abstract
The utility model discloses a transformer structure for improving withstand voltage, which comprises a transformer body, wherein manganese zinc ferrite is arranged at two side ends of the body, radiating fins are arranged at two sides of the manganese zinc ferrite, a bakelite skeleton shell is arranged on the outer wall of the bottom of the manganese zinc ferrite, a bakelite skeleton is arranged below the bakelite skeleton shell, a metal pin is fixedly connected to the lower end of the bakelite skeleton, a magnetic core groove is formed in the body, a magnetic core is arranged in the magnetic core groove, a coil is arranged on the outer wall of the magnetic core, an insulating adhesive tape is arranged on the outer wall of the magnetic core groove, and a Hall sensor is arranged on the outer wall of the magnetic core groove; according to the utility model, under the condition of not increasing the volume of the product, the very thin insulating shell, the radiating fins and the Hall sensor are adopted, so that the improvement of the voltage resistance is realized, the temperature of the transformer is effectively reduced, the magnetic leakage condition of the transformer is timely monitored, the material cost is low, the assembly is simple, the production efficiency is improved, and the voltage resistance of the product is improved, so that the utility model has good market prospect.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to a transformer structure for improving withstand voltage.
Background
The high-frequency transformer is mainly used for medium-frequency and high-frequency operation and also used for medium-frequency and high-frequency operation of high-frequency inversion power supply transformers, and the working frequency of the high-frequency transformer exceeds the intermediate frequency (10 kHz).
In order to ensure the safety of electricity, the high-frequency transformer has strict safety requirements, and the primary and the secondary are effectively isolated from the coil and the magnetic core. When alternating current is input, the transformer must have a safe distance to isolate the primary winding from the secondary winding and the magnetic core, and the primary winding and the secondary winding of the transformer are isolated by using insulating adhesive tapes. If there is no good isolation, the ac may pass through the secondary output, and when the human body contacts the electronic product (e.g., the output of a mobile phone charger), the primary ac passes through the human body and forms a loop with the earth, causing an electric shock.
The transformer product is light, thin, short and small, and the flattening can realize the ultrathin requirement. The traditional ultrathin transformer product has lower general voltage withstand requirement, the voltage withstand problem is rarely considered, and when a few products need high voltage withstand, the following methods can be adopted: (1) The L-shaped adhesive tape is stuck on the surface of the magnetic core, which is close to the framework, and the magnetic core needs manual operation and is easy to be stuck in a skew way; (2) Glue is dispensed at the joint of the magnetic core and the framework, so that the pressure resistance can be improved, but the glue can generate bubbles, so that part of products are unqualified; (3) The skeleton is prolonged, so that the pins are far away from the magnetic core and the skeleton, but the height and the volume of the product are increased, and the power density is lower.
Besides, the transformer has the magnetic leakage phenomenon, when the magnetic leakage is too large, the problems of excessively high temperature rise, increased loss, insulation aging and the like of the transformer are caused, and the damage to circuit elements and performance is caused by the excessive temperature rise.
Therefore, in order to solve the problems of poor withstand voltage and excessive magnetic leakage in the transformer, the utility model provides a transformer structure for improving withstand voltage.
Disclosure of Invention
The utility model aims to provide a transformer structure for improving withstand voltage.
The technical scheme of the utility model is realized as follows:
the utility model provides a promote withstand voltage transformer structure which characterized in that: including the body, body both sides end is provided with manganese zinc ferrite, manganese zinc ferrite's both sides are provided with a plurality of groups fin, manganese zinc ferrite's bottom outer wall is provided with bakelite skeleton shell, bakelite skeleton shell and manganese zinc ferrite bolted connection, bakelite skeleton shell below fixedly connected with bakelite skeleton, bakelite skeleton lower extreme fixedly connected with metal pin, the inside magnetic core groove that is provided with of body, magnetic core groove internally mounted has the magnetic core, the magnetic core center is the iron core, the winding of iron core outer wall has the coil, the winding of magnetic core groove outer wall has insulating tape, a plurality of groups hall sensor are installed to magnetic core groove outer wall.
Preferably, the shape of the radiating fin is in a dense tooth shape which is uniformly distributed, a radiating fin base is arranged at the bottom of the radiating fin, the radiating fin is integrated with the radiating fin base, and the radiating fin base is fixedly connected with the manganese zinc ferrite.
Preferably, a magnetostrictive sensor is mounted on the magnetic core, and the magnetostrictive sensor is a displacement sensor based on magnetostrictive materials.
Preferably, the bakelite skeleton housing is an insulating housing with a thickness of 0.5mm.
Preferably, the bakelite framework shell is a concave frame with a hollowed-out middle part, and the concave frame is positioned in a gap between the magnetic core and the bakelite framework.
Preferably, the outer wall of the manganese-zinc ferrite is wound with an insulating tape, and the insulating tape is wound on two side surfaces and the upper surface and the lower surface of the manganese-zinc ferrite for one circle.
Preferably, the metal pins are arranged in the pin seat, twelve groups of pin seats are arranged, six groups of pin seats are uniformly arranged on the front surface and the back surface of the body respectively, and at most one group of metal pins are arranged in the pin seat.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, the insulating shell is added and assembled on the magnetic core and positioned between the bakelite framework and the magnetic core, so that the creepage distance between the metal pins and the magnetic core is greatly increased under the condition of not increasing the volume of the product, the creepage distances of the finished products are overlapped when the creepage distance of the finished products is calculated, and the pressure resistance of the product can be improved by increasing the creepage distance, so that the pressure resistance is improved;
(2) The utility model has the functions of heat dissipation and magnetic leakage monitoring, can effectively reduce the temperature of the transformer and timely monitor the magnetic leakage condition of the transformer, and provides convenience for subsequent fault early warning and maintenance;
(3) The utility model has low material cost, simple assembly, improved production efficiency, improved pressure resistance, and improved power density of transformer product under specific conditions, thereby reducing reject ratio, and improving product reliability and market competitiveness 。
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a semi-sectional view of the present utility model.
Fig. 3 is a schematic structural view of the bakelite skeleton case according to the present utility model.
1. A body; 2. a heat sink base; 3. manganese zinc ferrite; 4. an insulating tape; 5. an bakelite skeleton; 6. a pin base; 7. a metal pin; 8. an bakelite skeleton case; 9. a heat sink; 10. a magnetic core; 11. an iron core; 12. a coil; 13. a hall sensor; 14. a magnetic core slot.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 3, the utility model is a transformer structure for improving withstand voltage, comprising a body 1 for supporting and fixing the whole structure, manganese zinc ferrite 3 is arranged at two side ends of the body 1 for increasing withstand voltage capability of the transformer, a plurality of groups of cooling fins 9 are arranged at two sides of the manganese zinc ferrite 3 for cooling down operation temperature of the transformer, a bakelite framework housing 8 is arranged at the outer wall of the bottom of the manganese zinc ferrite 3 for greatly improving creepage distance between a metal pin 7 and a magnetic core 10 under the condition of not increasing the volume of the transformer, thereby improving withstand voltage capability, the bakelite framework housing 8 is connected with the manganese zinc ferrite 3 by bolts, improving stability of the device, the bakelite skeleton 5 of bakelite skeleton shell 8 below fixedly connected with for support manganese zinc ferrite 3, bakelite skeleton 5 lower extreme fixedly connected with metal pin 7 is used for connecting circuit, the inside magnetic core groove 14 that is provided with of body 1, magnetic core groove 14 internally mounted has magnetic core 10 for the electric energy conversion of transformer, magnetic core 10 center is iron core 11, and the iron core 11 outer wall winding has coil 12 for produce the magnetic field, and magnetic core groove 14 outer wall winding has insulating tape 4 for insulating coil 12, and a plurality of groups of hall sensor 13 are installed to magnetic core groove 14 outer wall, can direct perception magnetic field change to turn into electric signal output with it, thereby realize the magnetic leakage detection.
The shape of the radiating fins 9 is in a dense tooth shape which is uniformly distributed, the radiating fin base 2 is arranged at the bottom of the radiating fins 9, the radiating fins 9 are integrated with the radiating fin base 2, the radiating fin base 2 is fixedly connected with the Mn-Zn ferrite 3, and the radiating fins 9 are accessories for accelerating heat radiation so as to enhance heat conduction and disperse heat to ensure that the transformer operates in a good working state, so that the radiating fins 9 can rapidly transfer the generated heat to the external environment and avoid damage to circuit elements and performance due to excessive temperature rise; the heat sink 9 may be considered to be a more efficient material such as a thermally conductive plastic to help lower the temperature of the transformer, or may be a temperature sensor to monitor the temperature of the transformer.
The magnetostrictive sensor is a displacement sensor based on magnetostrictive materials and can sense the change of a magnetic field and convert the change into displacement output, and the magnetic field change generated by the transformer can be monitored by installing a certain amount of magnetostrictive materials on the magnetic core 10 in the transformer so as to realize magnetic leakage detection; when the magnetic leakage is detected to exceed the threshold value, a user can be timely reminded to take relevant measures to avoid faults.
Wherein, bakelite skeleton shell 8 is insulating shell, and thickness is 0.5mm, through adopting very thin insulating shell, can satisfy power output requirement and safety rule requirement under the state that does not increase product size to realize bigger power output with less volume, under the little circumstances of cost increase, promoted the power density, realize bigger power output with less volume promptly.
The electric wood framework shell 8 is a concave frame with a hollowed middle part, and is located in a gap between the magnetic core 10 and the electric wood framework 5, so that the creepage distance between the metal pins 7 and the magnetic core 10 is greatly improved, and the pressure resistance of a product is improved.
Wherein, the outer wall of the Mn-Zn ferrite 3 is wound with an insulating tape 4, and the insulating tape 4 is wound around the two sides and the upper and lower surfaces of the Mn-Zn ferrite 3.
Wherein, metal pin 7 installs in the pin seat 6, and pin seat 6 is provided with twelve groups, is provided with six groups respectively evenly in front and the back of body 1, is provided with at most a set of metal pin 7 in the pin seat 6.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. The utility model provides a promote withstand voltage transformer structure which characterized in that: including body (1), body (1) both sides end is provided with manganese zinc ferrite (3), the both sides of manganese zinc ferrite (3) are provided with a plurality of groups fin (9), the bottom outer wall of manganese zinc ferrite (3) is provided with bakelite skeleton shell (8), bakelite skeleton shell (8) and manganese zinc ferrite (3) bolted connection, bakelite skeleton shell (8) below fixedly connected with bakelite skeleton (5), bakelite skeleton (5) lower extreme fixedly connected with metal pin (7), body (1) inside is provided with magnetic core groove (14), magnetic core groove (14) internally mounted has magnetic core (10), magnetic core (10) center is iron core (11), iron core (11) outer wall winding has coil (12), magnetic core groove (14) outer wall winding has insulating tape (4), a plurality of group hall sensor (13) are installed to magnetic core groove (14) outer wall.
2. The transformer structure for improving withstand voltage according to claim 1, wherein: the appearance of fin (9) is evenly distributed's close cusp, fin (9) bottom is provided with fin base (2), fin (9) and fin base (2) integration, fin base (2) and manganese zinc ferrite (3) fixed connection.
3. The transformer structure for improving withstand voltage according to claim 1, wherein: and a magnetostrictive sensor is arranged on the magnetic core (10), and the magnetostrictive sensor is a displacement sensor based on magnetostrictive materials.
4. The transformer structure for improving withstand voltage according to claim 1, wherein: the bakelite framework shell (8) is an insulating shell, and the thickness of the bakelite framework shell is 0.5mm.
5. The transformer structure for improving withstand voltage according to claim 1, wherein: the electric wood framework shell (8) is a concave frame with a hollowed middle part, and is positioned in a gap between the magnetic core (10) and the electric wood framework (5).
6. The transformer structure for improving withstand voltage according to claim 1, wherein: the outer wall of the manganese-zinc ferrite (3) is wound with an insulating adhesive tape (4), and the insulating adhesive tape (4) is wound on the two side surfaces, the upper surface and the lower surface of the manganese-zinc ferrite (3) for one circle.
7. The transformer structure for improving withstand voltage according to claim 1, wherein: the metal pins (7) are arranged in the pin seat (6), twelve groups of pin seats (6) are arranged, six groups of metal pins (7) are uniformly arranged on the front surface and the back surface of the body (1) respectively, and at most one group of metal pins (7) are arranged in the pin seat (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321423376.4U CN219936822U (en) | 2023-06-06 | 2023-06-06 | Transformer structure for improving withstand voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321423376.4U CN219936822U (en) | 2023-06-06 | 2023-06-06 | Transformer structure for improving withstand voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219936822U true CN219936822U (en) | 2023-10-31 |
Family
ID=88492503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321423376.4U Active CN219936822U (en) | 2023-06-06 | 2023-06-06 | Transformer structure for improving withstand voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219936822U (en) |
-
2023
- 2023-06-06 CN CN202321423376.4U patent/CN219936822U/en active Active
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