CN201262876Y - High-frequency transformer of spot welding machine - Google Patents
High-frequency transformer of spot welding machine Download PDFInfo
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- CN201262876Y CN201262876Y CNU2008201466545U CN200820146654U CN201262876Y CN 201262876 Y CN201262876 Y CN 201262876Y CN U2008201466545 U CNU2008201466545 U CN U2008201466545U CN 200820146654 U CN200820146654 U CN 200820146654U CN 201262876 Y CN201262876 Y CN 201262876Y
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- welding machine
- spot welding
- frequency transformer
- transformer
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Abstract
The utility model discloses a spot welder high-frequency transformer comprising a magnetic core, a primary coil and a secondary coil. The primary coil and the secondary coil are coiled layer by layer alternatively and an insulating layer is arranged between two layers; the primary coil layer is clamped between two secondary coil layers, and the inner layer and the outer layer of the primary coil layer are all both provided the secondary coil layer; the secondary coil is formed by coiling thin copper strips layer by layer with one circle for each layer. The structure of the transformer is convenient for the coiling of the transformer; the volume, weight, leakage inductance and copper circuit waste can all be reduced; the structure is also convenient for the radiation of the secondary coil and is good for the high-frequency transformer to output higher current and power.
Description
[technical field]
The utility model relates to transformer, relates in particular to the high frequency transformer that spot welding machine uses.
[background technology]
Traditional resistance welding power source mainly is interchange, direct current frequency spot welding machine, is the control of finishing welding current by the size of adjusting thyristor operating angle, technical comparative maturity, but bulky.Because be single-phase input, the energy consumption height, efficient is low and bad dynamic performance, and the control essence is not high.
To the eight's or nine the medium frequency inverter electric resistance welding has appearred, power supply is a three-phase by original single-phase lifting, the operating frequency of transformer is risen to about 1000HZ by 50HZ.The volume of intermediate frequency resistance welder greatly reduces, and efficient also promotes to some extent.The welding efficiency of direct current intermediate frequency electric resistance welding is significantly improved than ac spot welding machine, and is energy-conservation more than 60%-70%.
The high-frequency inversion spot welding machine has the advantages that dynamic response is good, control precision is high, and it adopts the high frequency switch power technology, uses the electric resistance welding field widely.But owing to electronic device, the material of high frequency transformer, the limitation of manufacture craft, make the distributed constant of high frequency transformer electric capacity, inductance big, loss greatly, especially leakage inductance is big, when low electricity, press output current to be restricted, can't improve the power output of transformer.Though the manufacture craft of the transformer that the appearance of soft switching power makes requires to decrease, still too high to the stress requirement of IGBT, but power output still has limitation under low-voltage.Simultaneously, transformer loss is excessive, high frequency transformer heat radiation difficulty, and along with the increase of power output, the temperature rise of transformer is very high, is difficult to improve power output.Present high-frequency transformer of spot welding machine, volume is big, and power is low, and the following power output of 10KW is only arranged, and can not satisfy the big electric current of the right high-frequency transformer of spot welding machine of spot welding machine, high-power requirement.
[utility model content]
The technical problems to be solved in the utility model provides that a kind of volume is less, and weight is lighter, and output current is bigger, the high-frequency transformer of spot welding machine that power output is higher.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of high-frequency transformer of spot welding machine comprises magnetic core, primary coil, secondary coil, primary coil and secondary coil layering replace coiling, layer with layer between insulating barrier is arranged; The primary coil layer is clipped between the secondary wire ring layer, and the internal layer of primary coil layer and skin all have the secondary wire ring layer; Secondary coil thin copper belt layering coiling, every layer one circle.
Above-described high-frequency transformer of spot welding machine, described internal layer and outer field secondary wire ring layer all are even levels, the secondary wire ring layer of internal layer is connected mutually, the current opposite in direction of adjacent layer; Outer field secondary wire ring layer is series connection mutually also, and the sense of current of adjacent layer is also opposite.
Above-described high-frequency transformer of spot welding machine, described primary coil layer is a multilayer, multilayer primary coil layer is connected mutually.
Above-described high-frequency transformer of spot welding machine, described primary coil layer is 2 layers.Every layer of primary coil layer has 2 layers of internal layer secondary wire ring layer and 2 layers of outer secondary wire ring layer, has 8 hierarchical level coil layer; The serial connection point of secondary coil adjacent layer all connects the centre cap of transformer output, and the end of the same name of each layer of secondary coil also connects, and connects the transformer output.
Above-described high-frequency transformer of spot welding machine, described magnetic core is E type magnetic core preferably, and the magnetic core slit is the 0.2-0.8 millimeter, and the material of magnetic core is the MN-EN Ferrite Material.First no-load voltage ratio is preferably 40-80:1.The stranded use of insulated copper wire of the most handy diameter 0.3-0.6 of primary coil millimeter, the electrolysis copper strips of the most handy thickness 0.3-0.6 of secondary coil millimeter.Preferably 0.05 to 0.1 millimeter of the thickness of insulating material.
Above-described high-frequency transformer of spot welding machine, the pin of secondary coil preferably and the thin copper belt one of secondary coil are folded into after drawing from each secondary wire ring layer on the plane with the transformer axis normal.
The utility model primary coil and secondary coil layering replace coiling, the primary coil layer is clipped between the secondary wire ring layer, the internal layer of primary coil layer and skin all have the secondary wire ring layer, secondary coil thin copper belt layering coiling, every layer one circle, be convenient to like this transformer coiling, can reduce volume, reduce leakage inductance, reduce copper path loss consumption, be convenient to the derivation of secondary heat, help the bigger electric current of high frequency transformer output, export higher power.
[description of drawings]
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model high frequency transformer embodiment transformer winding structure figure.
Fig. 2 is the utility model high frequency transformer embodiment transformer lead connection layout
Fig. 3 is the utility model high frequency transformer embodiment transformer principle figure.
Fig. 4 is the utility model high frequency transformer embodiment transformer outline drawing.
[embodiment]
Guiding theory of the present utility model is: reduce the leakage inductance of transformer, can reduce requirement and raising power output to IGBT stress like this; Reasonably select material, strict manufacture craft is guaranteed the unanimity of transformer parameter, is not more than (0.5-2%) as parameter differences such as the inductance of transformer, leakage inductance, air gaps, accomplishes effective parallel connection of many transformers, thereby reaches the purpose that increases defeated attendance rate.Effectively handle the lead leg heat dissipation problem of transformer well, improve the arcing time factor of transformer.Specific practice of the present utility model is:
1. select suitable magnetic core according to the size of power output, select for use EE type magnetic core to be easy to reduce leakage inductance usually;
2. elementary segmentation and secondary alternately coiling, the flow direction of electric current is opposite between the adjacent two layers, is easy to reduce leakage inductance; Strict transformer manufacture craft has guaranteed the consistency of transformer parameter, can many transformers are effectively in parallel, increase the power output of spot welding machine transformer;
3. elementary employing multiply insulated copper wire, secondary employing thin copper belt is convenient to coiling like this, reduces volume, reduces leakage inductance, is reduced copper path loss consumption raising arcing time factor;
4. adopt thin insulating material to be satisfied with the requirement of withstand voltage of 2500-4000V, reduce the purpose of leakage inductance, reduced volume according to this;
5. secondary pin is linked to each other with rectifier diode with the heating panel of water-cooled, because secondary every layer of thin copper belt only has a circle, lead is very short can to reduce the thermal losses of transformer by carrying out heat exchange between copper strips and the heating panel, improves the purpose of power output and arcing time factor.
The structural principle of the utility model high frequency transformer embodiment and profile are as shown in Figures 1 to 4.
The external form of magnetic core is an E type magnetic core, and material is the MN-EN Ferrite Material of H30, and saturation flux density BM is 390mT; Remanent magnetism Br is 120mT; Initial permeability is 2500.
The design parameter of transformer, promptly first no-load voltage ratio is (40-80): 1; The elementary stranded use of insulated copper wire with diameter 0.3-0.6mm, secondary cathode copper copper strips with thickness 0.3-0.6mm.Insulating material is that the thick 0.05-0.1mm of being mylar, magnetic core slit are 0.2-0.8mm.Power output is between 10-40KW, and during use, transformer combination unit number can be between 1-4.
As shown in Figure 1: the 20th, E type magnetic core, the 42nd, insulating paper, the 21st, the secondary copper strips of ground floor, the 32nd, insulating paper, the 22nd, the secondary copper strips of the second layer, the 33rd, insulating paper, 23 ground floors are elementary multiply copper cash, the 34th, and insulating paper, 24 is tri-layer level copper strips, the 35th, and insulating paper, 25 is the 4th hierarchical level copper strips; The 36th, insulating paper, the 26th, the secondary copper strips of layer 5, the 37th, insulating paper, the 27th, the secondary copper strips of the second layer, the 38th, insulating paper, the 28th, the elementary multiply copper cash of the second layer, the 39th, insulating paper, 28 is tri-layer level copper strips, the 40th, insulating paper, 29 is the 8th hierarchical level copper strips, the 41st, insulating paper.
Wherein, first and second layer is secondary, and the 3rd layer elementary, and fourth, fifth, six, seven layer is secondary, and the 8th layer is elementary; Nine, ten layers is secondary.
Manufacture craft is as follows: elementary segmentation and secondary alternately coiling, and the flow direction of electric current is opposite between the adjacent two layers; Secondary is a circle layering coiling.Elementaryly be clipped in secondary mid line system, the primary and secondary arrangement of conductors is even.Two sections coilings of fraction just separate with insulating paper in the middle of two hierarchical level earlier, again around half is elementary (will be remaining half just do not cut off be put into the there treat nextly to use when elementary) again, and then around four hierarchical level one decks elementary and two hierarchical level.Elementary two-layer being clipped between eight hierarchical level.
The centre tapped mode of connection of transformer adopting, the concrete coiling mode of connection is seen Fig. 2, Fig. 3:
1,5,9,13 is connected to secondary C; 4,8,12,16 be connected to secondary tail E; 2,3,6,7,10,11,14,15 link and be a secondary centre D; 18,19 be connected to the primary center head, elementary head is A, and tail is B;
In secondary, 2 link to each other with 3; 6 link to each other with 7; 10 link to each other with 11; 14 link to each other with 15.Then four groups of secondary centre taps are connected together to finally being the center head D of full-wave rectification.This connected mode, the current opposite in direction of secondary adjacent layer.
End of the same name top is 1,5,9,13,17 (A, C); End end of the same name is 4,8,12,16,20. (B, E); Centre cap D by 2,6,10,14,18 (with E and B be end of the same name) and 3,7,11,15,19 (with C and A be end of the same name) form.
Lead-in wire mode and outward appearance are seen Fig. 4, and the pin of secondary coil and the thin copper belt of secondary coil are integrative-structures, are folded into the plane of transformer axis normal after drawing from each secondary wire ring layer and are convenient to fix with water-cooling plate and rectifier diode.
The fixed form of transformer pin: eight secondary centre tapped pin D are separately fixed on the water-cooling plate; Eight output pin C and E are fixed on the rectifier diode.Can take away the heat that produces on the transformer secondary output lead to heat by diode and water-cooling aluminium sheet like this, improve power output and arcing time factor according to this.
The high frequency transformer of the utility model embodiment has the following advantages:
1. reduced leakage inductance, reduced requirement IGBT stress;
2. guaranteed the consistency of transformer parameter, can many transformers are effectively in parallel, increased the power output of spot welding machine transformer;
3. utilize the pin heat radiation, dwindled the volume of transformer, improved the arcing time factor of transformer;
4. compare with common high-frequency high-power transformer, its volume is little, in light weight, efficient is high.Copper material consumption only be common high frequency transformer about 70%, weight only be Industrial Frequency Transformer about 60%, volume only common high frequency transformer about 50%, energy-conservation about 60%.The power of single transformer can have been accomplished 25KW, and electric current reaches 4000A.
Claims (10)
1. a high-frequency transformer of spot welding machine comprises magnetic core, primary coil, and secondary coil is characterized in that, primary coil and secondary coil layering replace coiling, between layer and the layer insulating barrier are arranged; The primary coil layer is clipped between the secondary wire ring layer, and the internal layer of primary coil layer and skin all have the secondary wire ring layer; Secondary coil thin copper belt layering coiling, every layer one circle.
2. high-frequency transformer of spot welding machine according to claim 1 is characterized in that, described internal layer and outer field secondary wire ring layer all are even levels, and the secondary wire ring layer of internal layer is connected mutually, the current opposite in direction of adjacent layer; Outer field secondary wire ring layer is series connection mutually also, and the sense of current of adjacent layer is also opposite.
3. high-frequency transformer of spot welding machine according to claim 2 is characterized in that, described primary coil layer is a multilayer, and multilayer primary coil layer is connected mutually.
4. high-frequency transformer of spot welding machine according to claim 3 is characterized in that, described primary coil layer is 2 layers.
5. high-frequency transformer of spot welding machine according to claim 4 is characterized in that, every layer of primary coil layer has 2 layers of internal layer secondary wire ring layer and 2 layers of outer secondary wire ring layer, has 8 hierarchical level coil layer; The serial connection point of secondary coil adjacent layer all connects the centre cap of transformer output, and the end of the same name of each layer of secondary coil also connects, and connects the transformer output.
6. according to the described high-frequency transformer of spot welding machine of arbitrary claim in the claim 1 to 5, it is characterized in that described magnetic core is an E type magnetic core, the magnetic core slit is the 0.2-0.8 millimeter, and the material of magnetic core is M
N-E
NFerrite Material.
7. according to the described high-frequency transformer of spot welding machine of arbitrary claim in the claim 1 to 5, it is characterized in that first no-load voltage ratio is 40-80:1.
8. according to the described high-frequency transformer of spot welding machine of arbitrary claim in the claim 1 to 5, it is characterized in that the primary coil stranded use of insulated copper wire of diameter 0.3-0.6 millimeter, the secondary coil electrolysis copper strips of thickness 0.3-0.6 millimeter.
9. according to the described high-frequency transformer of spot welding machine of arbitrary claim in the claim 1 to 5, it is characterized in that the thickness of insulating material is 0.05 to 0.1 millimeter.
10. according to the described high-frequency transformer of spot welding machine of arbitrary claim in the claim 1 to 5, it is characterized in that the thin copper belt one of the pin of secondary coil and secondary coil is folded into after drawing on the plane with the transformer axis normal from each secondary wire ring layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201466545U CN201262876Y (en) | 2008-08-19 | 2008-08-19 | High-frequency transformer of spot welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201466545U CN201262876Y (en) | 2008-08-19 | 2008-08-19 | High-frequency transformer of spot welding machine |
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| CN201262876Y true CN201262876Y (en) | 2009-06-24 |
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| CNU2008201466545U Expired - Fee Related CN201262876Y (en) | 2008-08-19 | 2008-08-19 | High-frequency transformer of spot welding machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430963B (en) * | 2008-08-19 | 2011-03-16 | 深圳市鸿栢科技实业有限公司 | High-frequency transformer of spot welding machine |
| CN102360800A (en) * | 2011-08-01 | 2012-02-22 | 深圳冠顺微电子有限公司 | Winding method and structure for transformer, and transformer |
| CN103489585A (en) * | 2013-09-25 | 2014-01-01 | 苏州康开电气有限公司 | High-radiation environment-friendly transformer |
| CN105513773A (en) * | 2015-12-11 | 2016-04-20 | 深圳市瑞凌实业股份有限公司 | Transformer, integrated transformer circuit and inverter welding machine |
-
2008
- 2008-08-19 CN CNU2008201466545U patent/CN201262876Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430963B (en) * | 2008-08-19 | 2011-03-16 | 深圳市鸿栢科技实业有限公司 | High-frequency transformer of spot welding machine |
| CN102360800A (en) * | 2011-08-01 | 2012-02-22 | 深圳冠顺微电子有限公司 | Winding method and structure for transformer, and transformer |
| CN102360800B (en) * | 2011-08-01 | 2014-04-02 | 朱威 | Winding method and structure for transformer, and transformer |
| CN103489585A (en) * | 2013-09-25 | 2014-01-01 | 苏州康开电气有限公司 | High-radiation environment-friendly transformer |
| CN105513773A (en) * | 2015-12-11 | 2016-04-20 | 深圳市瑞凌实业股份有限公司 | Transformer, integrated transformer circuit and inverter welding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA AUTO (TIANJIN) WELDING EQUIPMENT CO., LTD. Free format text: FORMER OWNER: SHENZHEN HONGBAI TECHNOLOGY INDUSTRIAL CO., LTD. Effective date: 20101216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518051 WEST SIDE, 4/F, HUOLIBAO BUILDING, NO. 5, NORTH ZONE, SCIENCE AND TECHNOLOGY PARK, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 300190 370, HONGQI ROAD, NANKAI DISTRICT 517, INNER OFFICE BUILDING (SCIENCE AND TECHNOLOGY PARK), ROOM |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101216 Address after: 300190 room 517, office building, 370 Hongqi Road, Nankai District (Science and Technology Park) Patentee after: China (Tianjin) welding equipment Co. Ltd. Address before: 518051, Guangdong province Shenzhen Nanshan District science and Technology Park North District 5 vitality treasure building four buildings west side Patentee before: Shenzhen Hongbai Technology Industrial Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 Termination date: 20110819 |