CN203150362U - High-frequency transformer for switch power supply - Google Patents
High-frequency transformer for switch power supply Download PDFInfo
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- CN203150362U CN203150362U CN 201320159911 CN201320159911U CN203150362U CN 203150362 U CN203150362 U CN 203150362U CN 201320159911 CN201320159911 CN 201320159911 CN 201320159911 U CN201320159911 U CN 201320159911U CN 203150362 U CN203150362 U CN 203150362U
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Abstract
The utility model provides a high-frequency transformer for a switch power supply and relates to switch power supplies. According to the high-frequency transformer for the switch power supply, labor productivity can be improved, cost is saved, and voltage-resistant reliability of varnished wires in electromagnetic wires is improved. The high-frequency transformer is provided with a coil frame, a ferrite magnetic core, a winding and a winding pin. The winding is provided with a primary coil Np and two secondary coils Ns. Electromagnetic wires of the primary coil Np and the two secondary coils Ns are combined into a bundle to be mixed and wound on the coil frame. The ferrite magnetic core is arranged on the coil frame and the winding. The winding pin is arranged on the coil frame and is connected with the winding. The winding can be a copper-clad aluminum varnished wire winding and can be provided with an auxiliary coil NF. An electromagnetic wire of the auxiliary coil NF, the electromagnetic wire of the primary coil Np and the electromagnetic wires of the two secondary coils Ns are combined into a bundle to be mixed and wound on the coil frame.
Description
Technical field
The utility model relates to Switching Power Supply, especially relates to a kind of high frequency transformer for Switching Power Supply.
Background technology
Switching Power Supply is fast, the practical a kind of supply convertor of current development.Because advantages such as its volume is little, economize on electricitys, in extensive uses such as household electrical appliance, communication, traffic and equipment, its effect is obvious.At present novel integrated control chip continues to bring out and the development of led light source, Switching Power Supply is pushed to a new high, particularly extensive application such as the led driver in some illuminating products and electronic transformer, these product majorities relate to transformer, transformer is very important in power circuit, technique for coiling is cumbersome, particularly the terminal point tail circle of coil from the skeleton pin some apart from the time, pin is arrived in the essential centre by two-layer insulating tape of lead-in wire, this is that automaton can't be finished, can only be manual, generally per capita hour less than 100, labour productive forces be very low at present.
Summary of the invention
The purpose of this utility model provides and can improve labour productive forces, saves cost, improves a kind of high frequency transformer for Switching Power Supply of the withstand voltage reliability of enamelled wire in the electromagnetic wire.
The utility model is provided with coil rack, FERRITE CORE, winding and winding pin; Described winding is provided with primary coil Np and two-stage secondary coil Ns, primary coil Np and two-stage secondary coil the Ns electromagnetic wire of totally 3 groups of coils are merged into a branch of mixing and on coil rack, FERRITE CORE is located on coil rack and the winding, and the winding pin is located on the coil rack and with winding and is connected.
Described winding can adopt the copper-in-aluminum enameled wire winding, and described winding can be provided with ancillary coil NF, and the electromagnetic wire of described ancillary coil NF and the electromagnetic wire of primary coil Np and two-stage secondary coil Ns are merged into a branch of mix and on coil rack.
The utility model is proceeded from the reality and is adopted the anti-convention measure: with the electromagnetic wire of the primary coil NP of transformer with the straight merging of the electromagnetic wire of secondary coil NS, mix and around, ancillary coil NF can with primary coil NP and secondary coil NS, or mix with primary coil NP and around, ancillary coil NF also can independently be a winding.Do not establish the isolated insulation adhesive tape between the layer of coil internal layer and the layer.
The utility model is cost-saved, and raising labour productive forces about 50%, and difficult point is the withstand voltage reliability that solves enamelled wire in the electromagnetic wire, single from requirement of withstand voltage, as φ 0.25mm2 level enamelled wire minimum break-down voltage 3900V(effective value), 3 grades of line puncture voltage 5500V(GB6109.1-90), the different requirement of withstand voltage that meet 1500～3750V of transformer, problem is that the every 30m of φ 0.25 line may have 3 defect points (pin hole), bring unreliability to transformer, because safety is up to standard to be 100%, this just must set up effectively full inspection, carries out overall process in the production and monitors automatically.Mixing of the present utility model and around reaching and surpass conventional good " sandwich " winding aspect technical performance comprises leakage inductance, efficiency, temperature rise, ripple etc.
Selecting for use of electromagnetic wire, it is 1500V that general transformer requires withstand voltage, adopt 2 grades of withstand voltage high strength enamelled wires, the employing 3 grade high-strength enamelled wires of requirement of withstand voltage below 3000V, the employing three layer insulation wire of requirement of withstand voltage more than 3000V, some do not need the transformer in the circuit that high pressure isolates can adopt 1 grade of common enamelled wire, and the defective in its 2m line must not be more than 1 place.
The assurance of the withstand voltage reliability of finished product: each line segment of enamelled wire is withstand voltage, and inhomogeneous and needle pore defect is to be difficult to exempt from, and three layer insulation wire also has withstand voltage non-uniform phenomenon, has operation to go up difference again, all might cause the product problem of withstand voltage.The precautionary measures are that the overall process that winds the line is exactly monitored automatically except adopting satisfactory material and accessory, and product is carried out full inspection, withstand voltage defective maximum tolerance rate before the full inspection is 0.1%, if defective is zero, need sneak into ten thousand/ the simulated defect product, to prevent the error of full inspection.
Description of drawings
Fig. 1 is that the structure of the utility model embodiment is formed schematic diagram.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is one of equivalent circuit diagram of the utility model embodiment.
Fig. 4 be the utility model embodiment equivalent circuit diagram two.
Embodiment
Referring to Fig. 1～4, the utility model embodiment is provided with coil rack 11, FERRITE CORE 12, copper-in-aluminum enameled wire winding 13 and winding pin 14; Described copper-in-aluminum enameled wire winding 13 is provided with primary coil Np and two-stage secondary coil Ns, primary coil Np and two-stage secondary coil the Ns electromagnetic wire of totally 3 groups of coils are merged into a branch of mixing and on coil rack 11, FERRITE CORE 12 is located on coil rack 11 and the copper-in-aluminum enameled wire winding 13, and winding pin 14 is located on the coil rack 11 and with copper-in-aluminum enameled wire winding 13 and is connected.Described copper-in-aluminum enameled wire winding 13 can be provided with ancillary coil NF, and the electromagnetic wire of described ancillary coil NF and the electromagnetic wire of primary coil Np and two-stage secondary coil Ns are merged into a branch of mix and on coil rack 11.
Fig. 3 is according to the specification requirement of transformer, selects suitable material and accessory, implements in the process of coiling transformer, and the electromagnetic wire of primary coil NP in the coil and secondary coil NS two-stage is lumped together, mix and around.General elementary is single line, and secondary is 1～3 electromagnetic wire, and the two-stage line is directly identical as far as possible, and the color difference of line is convenient to differentiate primary and secondary.Pin position according to transformer coil requires and pcb board face socket design, the terminus lead-in wire of primary and secondary is connected in the corresponding pin position of skeleton, ancillary coil NF(instead swashs level etc.) coiling can mix with primary coil and secondary coil etc. and around, can independently be a winding also.
When many groups output stage, that output current is bigger 1～2 group mix with primary coil NP and around.
When adopting the high withstand voltage electromagnetic wire of high strength, which kind of winding method no matter, transformer coil internal layer, layer with layer between do not establish the isolated insulation adhesive tape.
The electromagnetic wire that the utility model is used can be selected round copper enamelled wire, three layer insulation wire or copper-in-aluminum enameled wire for use according to the specification requirement of different transformers.
The coiling of 63V300mA power transformer is given an example:
1. main material is selected for use: PC40, EFD25/25 magnetic core and supporting skeleton, Φ 0.25mm2 level enamelled wire, Φ 0.25mm three layer insulation wire, insulating tape etc.
2. part specification requirement:
Primary coil NP Φ 0.25 enamelled wire, around 70 circles, inductance value 820 μ H, leakage inductance＜8 μ H, pin position 3-1;
Secondary coil NS Φ 0.25 * 2 three layer insulation wire, around 54 circles, pin position 10-6;
Ancillary coil NF Φ 0.25 enamelled wire, around 16 circles, pin position 5-4.
3. coiling: as Fig. 2 and 3, the single enamelled wire of primary coil NP and secondary coil NS2 root three layer insulation wire merge, mix and around, primary coil NP starting line connects skeleton 3 pin positions, 2 three layer insulation wires of secondary starting point are empty to be hung, around 3 layers of meter 54 circle, the secondary endpoints line connects 6 pin positions of skeleton, secondary end.Elementaryly count 70 circles again around 16 circles, elementary finishing line connects 1 pin position of skeleton, elementary end.Ancillary coil NF starting line connects 5 pin positions of skeleton, Φ 0.25 enamelled wire is around 16 circles, stop respectively the finishing line of ancillary coil NF is connected around 1 layer of insulating tape of back bag 4 pin positions of skeleton, the empty hanging wire of the starting point of secondary coil NS is connected in 10 pin positions of skeleton, wrap two layers of insulating tape again, coiling finishes.Production overall processes such as immersed solder tin, detection, assembling, vacuum paint dipping subsequently.
The relevant performance of product is as follows for example:
Withstand voltage: AC4250V/1min (3750V+500V);
Leakage inductance: 1.6 μ H (be primary electrical sensibility reciprocal 820 μ H 0.2%);
Temperature: 39 ℃ (20 ℃ of ambient temperatures raise 19 ℃);
Whole efficiency: 0.915 (" sandwich " winding is 0.902 under the equal conditions);
The performance requirement that below all meets general high frequency transformer.
Claims (2)
1. a high frequency transformer that is used for Switching Power Supply is characterized in that being provided with coil rack, FERRITE CORE, winding and winding pin; Described winding is provided with primary coil Np and two-stage secondary coil Ns, primary coil Np and two-stage secondary coil the Ns electromagnetic wire of totally 3 groups of coils are merged into a branch of mixing and on coil rack, FERRITE CORE is located on coil rack and the winding, and the winding pin is located on the coil rack and with winding and is connected.
2. a kind of high frequency transformer for Switching Power Supply according to claim 1, it is characterized in that described winding is provided with ancillary coil NF, the electromagnetic wire of described ancillary coil NF and the electromagnetic wire of primary coil Np and two-stage secondary coil Ns are merged into a branch of mix and on coil rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159911 CN203150362U (en) | 2013-04-02 | 2013-04-02 | High-frequency transformer for switch power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159911 CN203150362U (en) | 2013-04-02 | 2013-04-02 | High-frequency transformer for switch power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150362U true CN203150362U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320159911 Expired - Lifetime CN203150362U (en) | 2013-04-02 | 2013-04-02 | High-frequency transformer for switch power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150362U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103405A (en) * | 2014-07-10 | 2014-10-15 | 深圳市优创展科技有限公司 | High-temperature-resistant and high-pressure-resistant sealed transformer for electric car, production equipment and production method |
| CN105845406A (en) * | 2016-06-20 | 2016-08-10 | 衢州昀睿工业设计有限公司 | Mother-son high-voltage transformer |
| CN107452485A (en) * | 2017-09-08 | 2017-12-08 | 天宝电子（惠州）有限公司 | A kind of assembly type transformer |
-
2013
- 2013-04-02 CN CN 201320159911 patent/CN203150362U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103405A (en) * | 2014-07-10 | 2014-10-15 | 深圳市优创展科技有限公司 | High-temperature-resistant and high-pressure-resistant sealed transformer for electric car, production equipment and production method |
| CN105845406A (en) * | 2016-06-20 | 2016-08-10 | 衢州昀睿工业设计有限公司 | Mother-son high-voltage transformer |
| CN107452485A (en) * | 2017-09-08 | 2017-12-08 | 天宝电子（惠州）有限公司 | A kind of assembly type transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180305 Address after: No. 64 Fenjiang North Road, Chancheng District, Foshan, Guangdong Patentee after: FOSHAN ELECTRICAL AND LIGHTING Co.,Ltd. Address before: Room G, room G, 18 building, Fu Rong garden, Mong Kok, Hongkong, China Patentee before: Ma Wenhao |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |