WO2016154793A1 - Inverter direct-current resistance welding machine high-frequency transformer - Google Patents

Inverter direct-current resistance welding machine high-frequency transformer Download PDF

Info

Publication number
WO2016154793A1
WO2016154793A1 PCT/CN2015/075216 CN2015075216W WO2016154793A1 WO 2016154793 A1 WO2016154793 A1 WO 2016154793A1 CN 2015075216 W CN2015075216 W CN 2015075216W WO 2016154793 A1 WO2016154793 A1 WO 2016154793A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
frequency transformer
welding machine
inverter
resistance welding
Prior art date
Application number
PCT/CN2015/075216
Other languages
French (fr)
Chinese (zh)
Inventor
韩沛文
陈志伟
王尉
谢文
林国军
Original Assignee
深圳市鸿栢科技实业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市鸿栢科技实业有限公司 filed Critical 深圳市鸿栢科技实业有限公司
Priority to PCT/CN2015/075216 priority Critical patent/WO2016154793A1/en
Priority to CN201580068740.1A priority patent/CN107210121A/en
Publication of WO2016154793A1 publication Critical patent/WO2016154793A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections

Definitions

  • the invention relates to the technical field of welding equipment accessories, and relates to a high-frequency transformer applied to an inverter DC resistance welding machine, which is widely used in the field of automobile and sheet metal welding.
  • Commonly used resistance welding machine power transformer is mainly working in power frequency AC, output power frequency AC or power frequency DC, power frequency refers to the frequency of AC power used in industry, unit Hertz (Hz).
  • the iron core is mainly made of silicon steel sheet, which is bulky and looks very cumbersome. Since the output current is controlled by the conduction angle of the thyristor, its dynamic performance is poor, the control precision is not high, and the conversion efficiency of the transformer with low frequency is low. Low, the transformer needs to be made very large, the frequency is high, the transformer efficiency is high, and its transformer can be small.
  • the intermediate frequency inverter DC resistance welding machine has a working frequency of about 1000HZ, which belongs to the intermediate frequency transformer.
  • the volume is still large, the control precision can not meet the demand of multi-pulse welding, and there is still a transformer secondary water for heat dissipation. Cooling and cooling, the secondary water pipe is easy to scale and difficult to clean. At the same time, the secondary water pipe is difficult to weld, the water seal is difficult, and the transformer production cost is high.
  • the Chinese Patent Publication No. 103366932A the publication specification of the Japanese Patent Publication No. 2013-10-23 discloses a medium and high frequency transformer, the secondary wire package is composed of a copper pipe which is passed through water, and the copper pipe is cooled. Water, the primary line package is close to the copper tube, and part of the heat generated is taken away; all the water passing holes and the copper tube are connected to form a heat dissipating water channel of the rectifying radiator.
  • the high-frequency transformer has a good heat dissipation effect
  • the large space occupied by the copper tube makes the secondary line pack larger in volume, which makes the whole transformer larger in volume; the temperature of the water-passing pipeline is higher during operation, and the tube is easy to scale and It is difficult to clean up.
  • the working frequency of the transformer of the intermediate frequency inverter resistance welding machine is increased from 50HZ to 2000HZ.
  • the volume and weight of the intermediate frequency transformer are reduced compared with the power frequency transformer, but its volume and weight are still significantly larger.
  • the working frequency of the medium and high frequency transformer can be Working between 1000 and 20000HZ, the transformer's working frequency is increased, which reduces the size and weight of the transformer, has better dynamic response and higher control precision, and is more suitable for aluminum welding.
  • the existing intermediate frequency transformer has the following disadvantages: as the frequency and output power increase, the temperature of the transformer rises very high, the output current becomes small, and the rectifier diode is easily damaged, and it is difficult to work at a working frequency above 5000 Hz.
  • the object of the present invention is to overcome the technical problems existing in the prior art, and to provide a high frequency transformer for an inverter DC resistance welding machine, which can work at a high frequency of 5000 Hz, has a good heat dissipation effect of the transformer and a low operating temperature, and is comparable to the volume of the same type of transformer. smaller.
  • the secondary line package of the high-frequency transformer is improved, and a special thin copper plate is used as the coil of the secondary line.
  • the thin copper plate can reduce the space occupied by the secondary, and the surface area is more heat-dissipating.
  • a thin copper plate with a central opening and a side opening is used as a secondary coil, and a plurality of thin copper plates can be used for bonding, which is equivalent to a secondary wire package composed of a plurality of parallel coils.
  • the invention provides a high frequency transformer for an inverter DC resistance welding machine, comprising a main transformer and a rectifying radiator, the main transformer comprising a plurality of primary line packages and a plurality of secondary line packages, and the rectifying heat sink comprises two lead plates And a center tap, wherein the secondary wire package is formed by laminating a plurality of thin copper plates, and an insulating sheet is disposed between the thin copper plates, wherein the thin copper plate has a structure in which an iron core is passed through The through hole has a notch formed at the side; the two ends disconnected from the notch are respectively connected to the lead plate and the center tap.
  • the plurality of secondary line packages are alternately arranged in the forward and reverse directions,
  • the primary line is sandwiched between two secondary packages.
  • the number of the thin copper plates is 1 to 3, and an insulating sheet is sandwiched between each two.
  • the iron core is formed by combining two E-shaped iron cores composed of two CD-type nanocrystalline materials.
  • the number of primary wire packages is selected from 3 to 19, and each primary wire package is a flat electromagnetic wire having a thickness of 0.3 to 1 mm and a width of 1.5 to 6 mm, which is reversed from the inside to the outside.
  • the number of turns is made.
  • the number of the secondary line packages is selected from 4 to 20, and the secondary line packages connected in each of the two forward and reverse directions are connected in series to form a primary line packet group, and the two ends of the secondary line package are respectively connected to two.
  • Block lead plate with intermediate center taps is selected from 4 to 20, and the secondary line packages connected in each of the two forward and reverse directions are connected in series to form a primary line packet group, and the two ends of the secondary line package are respectively connected to two.
  • the two ends of the thin copper plate of the secondary wire package are respectively provided with convex portions, and the lead plates and the center taps are provided with grooves matching with the convex portions of the secondary wire package.
  • the rectifying heat sink comprises a positive electrode plate, a return type plate, a lead plate, a plane diode, a negative plate and a center tap; the positive plate is connected with the back plate, and the negative plate is connected with the center tap;
  • the negative plate is interspersed from the middle of the return type plate and insulated from the return type plate, the lead plate is disposed on both sides of the return type plate, and the planar diode is sandwiched between the return type plate and the lead plate, and the return type plate, The lead plate, the planar diode, and the negative plate are fixedly pressed by a butterfly elastic member.
  • the positive electrode plate, the stencil plate, the lead plate, the center tap and the negative plate are internally provided with a heat dissipating water channel, and two insulating water plates are installed on both sides of the rectifying radiator
  • the water-passing plate is used to connect the water inlet and outlet of each heat-dissipating water channel.
  • a support plate is further disposed between the lead plate and the letter-shaped plate, and a space for accommodating the planar diode is disposed in the middle of the support plate, and the thickness of the support plate is equivalent to the thickness of the planar diode.
  • the technical solution of the present invention has the technical effect that since the secondary wire package adopts a thin copper plate structure and a plurality of sets of two equal-twisted wire packages which are wound from the inside to the outside, and the primary and secondary wire packages are alternately placed, the primary is enhanced.
  • the electromagnetic coupling strength between the wire package and the secondary wire package improves the transmission power and efficiency of the transformer, reduces the heat generation of the transformer, reduces the volume and weight of the high-frequency transformer, simplifies the manufacturing process, and improves the production efficiency. , reducing costs.
  • FIG. 1 is a schematic view showing the overall structure of a high frequency transformer in an embodiment.
  • Fig. 2 is a cross-sectional view showing the structure of the high-frequency transformer in the middle of the embodiment.
  • FIG. 3 is a circuit schematic diagram of a center tapped transformer of the present invention.
  • Fig. 4 is a partial cross-sectional view showing the high frequency transformer in the embodiment.
  • Fig. 5 is a schematic structural view of a thin copper plate constituting a secondary wire package in the embodiment.
  • the high-frequency transformer of this embodiment is used on a DC resistance welding machine, and its frequency can reach 10000HZ.
  • the load duration is 20% (short-circuit current 15000A)
  • the rated power of a single transformer is greater than 100KVA.
  • the high-frequency transformer consists of two main parts: a main transformer and a heat-dissipating rectifier.
  • the main transformer consists of eleven primary line packages, twelve secondary line packages 2 and iron core 3.
  • the primary line package is 0.3 to 1 mm thick and wide. It is a 1.5 to 6 mm flat magnet wire wound. In order to achieve good heat dissipation and smaller volume, the secondary wire package is improved.
  • the secondary wire package is made up of three thin copper plates 21, which is equivalent to the secondary wire package consisting of three one-turn coils connected in parallel. An insulating sheet 22 is disposed between the copper plates,
  • the structure of the thin copper plate is such that a through hole 211 through which the iron core passes is opened.
  • a notch 212 is formed in the side portion, and has a shape similar to the G-shaped structure; the notch breaks the thin copper plate to form both ends, and one end 213 of the notch is connected to the lead plate of the heat dissipation rectifier, and the other end 214 of the notch is connected to the center tap. on.
  • the two ends of the thin copper plate are respectively provided with convex portions 215, and the lead plates 41 and the center taps 47 are provided with grooves 411, 412 which cooperate with the convex portions of the secondary wire package.
  • the convex portion is inserted into the groove, and then welded to prevent deviation during welding and improve the electrical conductivity of the joint.
  • the primary wire package and the secondary wire package are alternately placed in two CD nanocrystalline iron cores, the primary wire is sandwiched between two secondary wire packages, and the connection between the primary wire packages can be in series or parallel manner; Two adjacent secondary line packages are connected in series to form a secondary line packet group, and the secondary line package groups are connected in parallel, and each secondary line package is composed of three one-turn coils connected in parallel, and the transformer E-shaped
  • the iron core is composed of two CD-type nanocrystalline materials.
  • the heat-dissipating rectifier comprises two lead plates 41 provided with heat-dissipating water channels in the board, the output positive plate 43 and the negative plate 44 provided with heat-dissipating water channels in the two plates, a return-shaped plate 42, two planar diodes 45, two sets of plates Spring assembly 46 and gland.
  • the negative plate is connected with the center tap 47, the positive plate is connected to the back plate, the negative plate is inserted through the return plate, and the insulating layer is provided between the negative plate and the return plate, and the lead plate and the back word are Between the stencils is a planar diode and a support plate.
  • the support plate is provided with a space for accommodating a planar diode.
  • the thickness of the support plate is equivalent to the thickness of the planar diode.
  • the lead plate is a copper plate with a thickness of 10 mm, and a water channel is arranged therein, which is respectively connected with the secondary wire package of the high-frequency transformer.
  • each adjacent two secondary wire packages are connected in series to the center tap, as
  • the negative output terminal E of the transformer is connected to C and D at the other ends, and then connected to the lead plate, and then connected to the positive plate through a planar diode.
  • the positive plate is a red-shaped profiled copper plate with a thickness of 10 mm, which is used as the positive electrode of the transformer.
  • a heat dissipating water channel is disposed in the positive electrode plate.
  • the negative plate is a 10 mm thick copper plate with a heat dissipating water channel connected to the center tap and pulled out from the middle of the return type positive plate; the planar diodes are respectively located on both sides of the back plate, and two lead plates Located at the outermost of the two planar diodes, this forms a complete full-wave rectification circuit.
  • the inner side of the positive electrode plate, the lead plate, the center tap and the negative plate are provided with a heat dissipating water channel, and two insulated water passing plates 48 are installed on both sides of the rectifying radiator, and the water inlet and outlet of the heat dissipating water channel are respectively connected to the water passing plate.
  • the cooling rectifier adopts the route of circulating water.
  • the cooling water below 30 °C enters the water channel below the return type positive plate from the positive nozzle of the rectifier and then enters the two lead plates through the support channel of the diode, and finally from both sides of the water cooling rectifier After the water channel of the insulated water board enters the center tap, it flows out from the outlet of the rectifier negative plate, and the water flow rate is 8 liters/min or more.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

An inverter direct-current resistance welding machine high-frequency transformer, comprising a main transformer and a rectifier radiator. The main transformer comprises several primary wire packets (1) and several secondary wire packets (2). The rectifier radiator comprises two lead plates (41) and a centre tap (47). Each of the secondary wire packets is formed by attaching a plurality of thin copper plates (21). An insulating sheet (22) is provided between the thin copper plates. The structure of each of the thin copper plates is that a through hole (211) for an iron core to pass through is provided in the centre thereof, a notch (212) is provided at a side portion, and two ends (213, 214) disconnected at the notch are respectively connected to the lead plates and the centre tap. Thus, the electromagnetic coupling strength between the primary wire packet and the secondary wire packet is enhanced, the transmission power and efficiency of a transformer are improved, the heating quantity of the transformer is reduced, and the volume and weight of a high-frequency transformer are reduced.

Description

逆变直流电阻焊机高频变压器Inverter DC resistance welding machine high frequency transformer 技术领域Technical field
本发明涉属于焊接设备配件技术领域，具本是涉及一种应用于逆变直流电阻焊机的高频变压器，广泛的运用于汽车和板金焊接领域。The invention relates to the technical field of welding equipment accessories, and relates to a high-frequency transformer applied to an inverter DC resistance welding machine, which is widely used in the field of automobile and sheet metal welding.
背景技术Background technique
常用的电阻焊机电源变压器主要是工作于工频交流，输出工频交流或工频直流,工频指工业上用的交流电源的频率，单位赫兹(Hz)。铁芯主要是采用的矽钢片，体积庞大，显得十分笨重,由于输出电流是通过可控硅导通角的大小来控制的，其动态性能差，控制精度不高，频率低的变压器转换效率低,需要将变压器做的体积很大，频率高变压器效率就高,它的变压器可以很小。Commonly used resistance welding machine power transformer is mainly working in power frequency AC, output power frequency AC or power frequency DC, power frequency refers to the frequency of AC power used in industry, unit Hertz (Hz). The iron core is mainly made of silicon steel sheet, which is bulky and looks very cumbersome. Since the output current is controlled by the conduction angle of the thyristor, its dynamic performance is poor, the control precision is not high, and the conversion efficiency of the transformer with low frequency is low. Low, the transformer needs to be made very large, the frequency is high, the transformer efficiency is high, and its transformer can be small.
目前的中频逆变直流电阻焊机，其变压器的工作频率在1000HZ左右，属于中频变压器，体积仍然较大，控制精度不能满足多脉冲焊接的需求，同时为了散热还存在着变压器次级要通水进行冷却散热，次级通水管道易结水垢且难易清理。同时次级通水管焊接困难，水密封难，变压器制作成本高的情况。At present, the intermediate frequency inverter DC resistance welding machine has a working frequency of about 1000HZ, which belongs to the intermediate frequency transformer. The volume is still large, the control precision can not meet the demand of multi-pulse welding, and there is still a transformer secondary water for heat dissipation. Cooling and cooling, the secondary water pipe is easy to scale and difficult to clean. At the same time, the secondary water pipe is difficult to weld, the water seal is difficult, and the transformer production cost is high.
如中国发明专利公开号为103366932A，公开日为2013-10-23的公布说明书公开了一种中高频变压器，所述次级线包由通水的铜管绕制组成，铜管内流过冷却水，初级线包紧靠铜管，将产生的部分热量带走；将所有通水孔和铜管联接起来，组成整流散热器的散热水道。虽然该高频变压器散热效果好，但是由于铜管占用的空间大，使得次级线包变的体积较大，使整个变压器体积较大；工作时通水管道温度较高，管内易结水垢且难易清理。 For example, the Chinese Patent Publication No. 103366932A, the publication specification of the Japanese Patent Publication No. 2013-10-23 discloses a medium and high frequency transformer, the secondary wire package is composed of a copper pipe which is passed through water, and the copper pipe is cooled. Water, the primary line package is close to the copper tube, and part of the heat generated is taken away; all the water passing holes and the copper tube are connected to form a heat dissipating water channel of the rectifying radiator. Although the high-frequency transformer has a good heat dissipation effect, the large space occupied by the copper tube makes the secondary line pack larger in volume, which makes the whole transformer larger in volume; the temperature of the water-passing pipeline is higher during operation, and the tube is easy to scale and It is difficult to clean up.
中频逆变电阻焊机变压器的工作频率由50HZ提升到2000HZ左右，中频变压器比工频变压器的体积和重量都有所减少，但其体积和重量仍然显的偏大，中高频变压器的工作频率可工作在1000到20000HZ之间，由于变压器工作频率的提高，从而降低了变压器的体积和重量，具有更好的动态响应和更高控制精度、更适用于铝材的焊接。但是现有的中频变压器存在如下缺点：随着频率和输出功率的提高，变压器的温度升很高，输出电流变小同时整流二极管极易损坏，很难工作于5000HZ以上的工作频率。The working frequency of the transformer of the intermediate frequency inverter resistance welding machine is increased from 50HZ to 2000HZ. The volume and weight of the intermediate frequency transformer are reduced compared with the power frequency transformer, but its volume and weight are still significantly larger. The working frequency of the medium and high frequency transformer can be Working between 1000 and 20000HZ, the transformer's working frequency is increased, which reduces the size and weight of the transformer, has better dynamic response and higher control precision, and is more suitable for aluminum welding. However, the existing intermediate frequency transformer has the following disadvantages: as the frequency and output power increase, the temperature of the transformer rises very high, the output current becomes small, and the rectifier diode is easily damaged, and it is difficult to work at a working frequency above 5000 Hz.
发明内容Summary of the invention
本发明的目的是克服现在技术中存的技术问题，提供一种逆变直流电阻焊机高频变压器，可工作于5000HZ的高频率，变压器散热效果好且工作温度低，较相同类型变压器其体积更小。The object of the present invention is to overcome the technical problems existing in the prior art, and to provide a high frequency transformer for an inverter DC resistance welding machine, which can work at a high frequency of 5000 Hz, has a good heat dissipation effect of the transformer and a low operating temperature, and is comparable to the volume of the same type of transformer. smaller.
本发明是通过以下的技术方案来实现的：The present invention is achieved by the following technical solutions:
为了达到散热和高频的功能，对高频变压器的次级线包进行改进，采用特制的薄铜板来作为次线的线圈，薄铜板可以减少次级占用的空间，表面积更大散热效果更好；将中心开孔的并且侧面断开的薄铜板作为次级的一匝线圈，同时可以采用多片薄铜板进行贴合，相当于次级线包由多个并联的线圈组成的。In order to achieve the functions of heat dissipation and high frequency, the secondary line package of the high-frequency transformer is improved, and a special thin copper plate is used as the coil of the secondary line. The thin copper plate can reduce the space occupied by the secondary, and the surface area is more heat-dissipating. A thin copper plate with a central opening and a side opening is used as a secondary coil, and a plurality of thin copper plates can be used for bonding, which is equivalent to a secondary wire package composed of a plurality of parallel coils.
本发明提供了一种逆变直流电阻焊机高频变压器，包括主变压器和整流散热器，所述主变压器包括若干个初级线包和若干个次级线包，整流散热器包括两块引线板和中心抽头，其特征在于，所述次级线包由数片薄铜板贴合而成，在薄铜板之间设置绝缘片，所述薄铜板的结构是在其中间开设有供铁芯穿过的通孔，在侧部开设一缺口；从缺口处断开的两端分别连接引线板和中心抽头。The invention provides a high frequency transformer for an inverter DC resistance welding machine, comprising a main transformer and a rectifying radiator, the main transformer comprising a plurality of primary line packages and a plurality of secondary line packages, and the rectifying heat sink comprises two lead plates And a center tap, wherein the secondary wire package is formed by laminating a plurality of thin copper plates, and an insulating sheet is disposed between the thin copper plates, wherein the thin copper plate has a structure in which an iron core is passed through The through hole has a notch formed at the side; the two ends disconnected from the notch are respectively connected to the lead plate and the center tap.
以上所述的技术方案中，所述若干个次级线包以正反方向交替排列，所述 初级线包夹在两个次级线包之间。In the above technical solution, the plurality of secondary line packages are alternately arranged in the forward and reverse directions, The primary line is sandwiched between two secondary packages.
以上所述的技术方案中，所述薄铜板的数量为1至3片，每两片之间夹有绝缘片。In the above technical solution, the number of the thin copper plates is 1 to 3, and an insulating sheet is sandwiched between each two.
以上所述的技术方案中，所述铁芯由两副CD型纳米晶材料构成的E字型铁芯进行组合而成。In the above-described technical solution, the iron core is formed by combining two E-shaped iron cores composed of two CD-type nanocrystalline materials.
以上所述的技术方案中，初级线包的数量选择3至19个，每个初级线包采用厚为0.3至1毫米、宽为1.5至6毫米的扁电磁线，由里向外反向等匝数绕制而成。In the above technical solution, the number of primary wire packages is selected from 3 to 19, and each primary wire package is a flat electromagnetic wire having a thickness of 0.3 to 1 mm and a width of 1.5 to 6 mm, which is reversed from the inside to the outside. The number of turns is made.
以上所述的技术方案中，所述次级线包数量选择4至20个，每两个正反方向连接的次级线包串联组成一次级线包组，次级线包两端分别连接两块引线板，中间连接中心抽头。In the above technical solution, the number of the secondary line packages is selected from 4 to 20, and the secondary line packages connected in each of the two forward and reverse directions are connected in series to form a primary line packet group, and the two ends of the secondary line package are respectively connected to two. Block lead plate with intermediate center taps.
以上所述的技术方案中，所述次级线包的薄铜板两端分别设有凸部，引线板和中心抽头设有与次级线包的凸部相配合的凹槽。In the above technical solution, the two ends of the thin copper plate of the secondary wire package are respectively provided with convex portions, and the lead plates and the center taps are provided with grooves matching with the convex portions of the secondary wire package.
以上所述的技术方案中，所述整流散热器包括正极板、回字型板、引线板、平面二极管、负板板和中心抽头；正极板与回字型板连接，负极板与中心抽头连接，负极板从回字型板中间穿插并且与回字型板之间绝缘，引线板设置在回字型板两侧，平面二极管夹在回字型板与引线板之间，回字型板、引线板、平面二极管和负板板通过蝶形弹性组件进行固定压紧。In the above technical solution, the rectifying heat sink comprises a positive electrode plate, a return type plate, a lead plate, a plane diode, a negative plate and a center tap; the positive plate is connected with the back plate, and the negative plate is connected with the center tap; The negative plate is interspersed from the middle of the return type plate and insulated from the return type plate, the lead plate is disposed on both sides of the return type plate, and the planar diode is sandwiched between the return type plate and the lead plate, and the return type plate, The lead plate, the planar diode, and the negative plate are fixedly pressed by a butterfly elastic member.
以上所述的技术方案中，所述正极板、回字型板、引线板、中心抽头和负板板的内部设置有散热水道，在整流散热器的两侧安装有两块绝缘的过水板，过水板用以连接各散热水道的进出水口。In the above technical solution, the positive electrode plate, the stencil plate, the lead plate, the center tap and the negative plate are internally provided with a heat dissipating water channel, and two insulating water plates are installed on both sides of the rectifying radiator The water-passing plate is used to connect the water inlet and outlet of each heat-dissipating water channel.
以上所述的技术方案中，所述引线板与回字型板之间还设有支撑板，支撑板中间设置容纳平面二极管的空间，支撑板的厚度与平面二极管厚度相当。 In the above technical solution, a support plate is further disposed between the lead plate and the letter-shaped plate, and a space for accommodating the planar diode is disposed in the middle of the support plate, and the thickness of the support plate is equivalent to the thickness of the planar diode.
本发明的技术方案，其技术效果在于，由于次级线包采用薄铜板结构和多组两个等匝反向从内向外绕制的线包，且初次级线包交替放置结构，增强了初级线包与次级线包之间的电磁耦合强度，提高了变压器的传输功率和效率，降低了变压器的发热量，减小了高频变压器的体积和重量，简化了制作工艺，提高了生产效率，降低了成本。The technical solution of the present invention has the technical effect that since the secondary wire package adopts a thin copper plate structure and a plurality of sets of two equal-twisted wire packages which are wound from the inside to the outside, and the primary and secondary wire packages are alternately placed, the primary is enhanced. The electromagnetic coupling strength between the wire package and the secondary wire package improves the transmission power and efficiency of the transformer, reduces the heat generation of the transformer, reduces the volume and weight of the high-frequency transformer, simplifies the manufacturing process, and improves the production efficiency. , reducing costs.
附图说明DRAWINGS
图1是实施例中的高频变压器的整体结构示意图。1 is a schematic view showing the overall structure of a high frequency transformer in an embodiment.
图2是实施例中的高频变压器的沿中间的结构剖视图。Fig. 2 is a cross-sectional view showing the structure of the high-frequency transformer in the middle of the embodiment.
图3是本实用新型的中心抽头变压器的电路原理图。3 is a circuit schematic diagram of a center tapped transformer of the present invention.
图4是实施例中的高频变压器的部分剖视图。Fig. 4 is a partial cross-sectional view showing the high frequency transformer in the embodiment.
图5是实施例中的组成次级线包的薄铜板的结构示意图。Fig. 5 is a schematic structural view of a thin copper plate constituting a secondary wire package in the embodiment.
具体实施方式detailed description
以下结合附图与具体实施例对本发明的技术方案作作详细的说明。The technical solutions of the present invention are described in detail below with reference to the accompanying drawings and specific embodiments.
本实施例的高频变压器用于直流电阻焊机上，其频率可以达到10000HZ，负载持续率在20％(短路电流15000A)时，单只变压器的额定功率大于100KVA。The high-frequency transformer of this embodiment is used on a DC resistance welding machine, and its frequency can reach 10000HZ. When the load duration is 20% (short-circuit current 15000A), the rated power of a single transformer is greater than 100KVA.
高频变压器包括主变压器和散热整流器两大部分，主变压器由十一个初级线包1、十二个次级线包2和铁芯3组成，初级线包采用厚为0.3至1毫米、宽为1.5至6毫米扁电磁线绕制。为了达到散热好，且体积更小，对次级线包进行改进，次级线包由三片薄铜板21贴合而成，相当于次级线包由三个一砸线圈并联组成，在薄铜板之间设置绝缘片22，The high-frequency transformer consists of two main parts: a main transformer and a heat-dissipating rectifier. The main transformer consists of eleven primary line packages, twelve secondary line packages 2 and iron core 3. The primary line package is 0.3 to 1 mm thick and wide. It is a 1.5 to 6 mm flat magnet wire wound. In order to achieve good heat dissipation and smaller volume, the secondary wire package is improved. The secondary wire package is made up of three thin copper plates 21, which is equivalent to the secondary wire package consisting of three one-turn coils connected in parallel. An insulating sheet 22 is disposed between the copper plates,
参见附图5所示，薄铜板的结构是在其中间开设有供铁芯穿过的通孔211， 在侧部开设一缺口212，其形状类似于G型结构；缺口使薄铜板断开形成两端，缺口处的一端213连接在散热整流器的引线板上，缺口处的另一端214连接在中心抽头上。薄铜板两端分别设有凸部215，引线板41和中心抽头47设有与次级线包的凸部相配合的凹槽411，412。在安装时将凸部***到凹槽内，再进行焊接，防止焊接时产生偏差，提高连接处的导电性能。Referring to FIG. 5, the structure of the thin copper plate is such that a through hole 211 through which the iron core passes is opened. A notch 212 is formed in the side portion, and has a shape similar to the G-shaped structure; the notch breaks the thin copper plate to form both ends, and one end 213 of the notch is connected to the lead plate of the heat dissipation rectifier, and the other end 214 of the notch is connected to the center tap. on. The two ends of the thin copper plate are respectively provided with convex portions 215, and the lead plates 41 and the center taps 47 are provided with grooves 411, 412 which cooperate with the convex portions of the secondary wire package. During the installation, the convex portion is inserted into the groove, and then welded to prevent deviation during welding and improve the electrical conductivity of the joint.
初级线包与次级线包交替放置于两付CD纳米晶铁芯里，初级线包夹在两个次级线包之间，初级线包之间的联接方式可采用串联或并联方式；每两个相邻次级线包之间串联组成一个次级线包组，次级线包组之间采用并联方式连接，每个次级线包由三个一匝线圈并联组成，变压器E字型铁芯由两付CD型纳米晶材料组成。The primary wire package and the secondary wire package are alternately placed in two CD nanocrystalline iron cores, the primary wire is sandwiched between two secondary wire packages, and the connection between the primary wire packages can be in series or parallel manner; Two adjacent secondary line packages are connected in series to form a secondary line packet group, and the secondary line package groups are connected in parallel, and each secondary line package is composed of three one-turn coils connected in parallel, and the transformer E-shaped The iron core is composed of two CD-type nanocrystalline materials.
散热整流器包括两个板内设置有散热水道的引线板41，两个板内设置有散热水道的输出正极板43和负电板44，一块回字型板42，两只平面二极管45，两组碟型弹簧组件46及压盖。其中负板板与中心抽头47相接，正极板连接回字型板，负板板从回字型板中穿插过，负极板与回字型板之间设有绝缘层，引线板与回字型板之间为平面二极管和支撑板，支撑板中间设置容纳平面二极管的空间，支撑板的厚度与平面二极管厚度相当。The heat-dissipating rectifier comprises two lead plates 41 provided with heat-dissipating water channels in the board, the output positive plate 43 and the negative plate 44 provided with heat-dissipating water channels in the two plates, a return-shaped plate 42, two planar diodes 45, two sets of plates Spring assembly 46 and gland. The negative plate is connected with the center tap 47, the positive plate is connected to the back plate, the negative plate is inserted through the return plate, and the insulating layer is provided between the negative plate and the return plate, and the lead plate and the back word are Between the stencils is a planar diode and a support plate. The support plate is provided with a space for accommodating a planar diode. The thickness of the support plate is equivalent to the thickness of the planar diode.
引线板为厚10毫米的紫铜板，内设置有水道，分别与高频变压器的次级线包连接，参见附图3所示，每相邻两个次级线包串联连接于中心抽头，作为变压器的负极输出端E，其余两端汇接于C和D，然后连接于引线板，再经平面二极管连接正极板，正极板为厚10毫米的回字型异型材紫铜板，作为变压器的正极输出端F，正极板内设置有散热水道。The lead plate is a copper plate with a thickness of 10 mm, and a water channel is arranged therein, which is respectively connected with the secondary wire package of the high-frequency transformer. Referring to FIG. 3, each adjacent two secondary wire packages are connected in series to the center tap, as The negative output terminal E of the transformer is connected to C and D at the other ends, and then connected to the lead plate, and then connected to the positive plate through a planar diode. The positive plate is a red-shaped profiled copper plate with a thickness of 10 mm, which is used as the positive electrode of the transformer. At the output end F, a heat dissipating water channel is disposed in the positive electrode plate.
负极板为厚10毫米的紫铜板，内设置有散热水道，它与中心抽头连接，并从回字型正极板中间窜出；平面二极管分别位于回字型板的两侧，两块引线板 位于在两个平面二极管的最外面，这样构成了一个完整的全波整流电路。The negative plate is a 10 mm thick copper plate with a heat dissipating water channel connected to the center tap and pulled out from the middle of the return type positive plate; the planar diodes are respectively located on both sides of the back plate, and two lead plates Located at the outermost of the two planar diodes, this forms a complete full-wave rectification circuit.
正极板、引线板、中心抽头和负板板的内部都设置有散热水道，在整流散热器的两侧安装有两块绝缘的过水板48，散热水道的进出水口分别连接过水板。散热整流器采用循环水的路由，低于30℃的冷却水从整流器的正极水口进入回字型正极板上下面的水道再通过二极管的支撑架水道进入两块引线板，最后从水冷散热整流器两侧绝缘过水板的水道进入中心抽头后，再由整流器负极板出水口流出，水流量为8升/分钟以上。 The inner side of the positive electrode plate, the lead plate, the center tap and the negative plate are provided with a heat dissipating water channel, and two insulated water passing plates 48 are installed on both sides of the rectifying radiator, and the water inlet and outlet of the heat dissipating water channel are respectively connected to the water passing plate. The cooling rectifier adopts the route of circulating water. The cooling water below 30 °C enters the water channel below the return type positive plate from the positive nozzle of the rectifier and then enters the two lead plates through the support channel of the diode, and finally from both sides of the water cooling rectifier After the water channel of the insulated water board enters the center tap, it flows out from the outlet of the rectifier negative plate, and the water flow rate is 8 liters/min or more.

Claims (10)

  1. 一种逆变直流电阻焊机高频变压器，包括主变压器和整流散热器，所述主变压器包括若干个初级线包(1)和若干个次级线包(2)，整流散热器包括两块引线板(41)和中心抽头(47)，其特征在于，所述次级线包由数片薄铜板(21)贴合而成，在薄铜板之间设置绝缘片(22)，所述薄铜板的结构是在其中间开设有供铁芯穿过的通孔(211)，在侧部开设一缺口(212)；从缺口处断开的两端(213，214)分别连接引线板和中心抽头。A high frequency transformer for an inverter DC resistance welding machine, comprising a main transformer and a rectifying radiator, the main transformer comprising a plurality of primary line packages (1) and a plurality of secondary line packages (2), and the rectifying radiator comprises two pieces a lead plate (41) and a center tap (47), wherein the secondary wire package is formed by laminating a plurality of thin copper plates (21), and an insulating sheet (22) is disposed between the thin copper plates, the thin The copper plate has a through hole (211) through which the iron core passes, and a notch (212) is formed at the side; the two ends (213, 214) disconnected from the notch are respectively connected to the lead plate and the center. Tap.
  2. 根据权利要求1所述的逆变直流电阻焊机高频变压器，其特征在于，所述若干个次级线包以正反方向交替排列，所述初级线包夹在两个次级线包之间。The high frequency transformer of the inverter DC resistance welding machine according to claim 1, wherein the plurality of secondary wire packages are alternately arranged in a forward and reverse direction, and the primary wire is sandwiched between two secondary wires. between.
  3. 根据权利要求1所述的逆变直流电阻焊机高频变压器，其特征在于，所述薄铜板的数量为1至3片，每两片之间夹有绝缘片。The high-frequency transformer of the inverter DC resistance welding machine according to claim 1, wherein the number of the thin copper plates is 1 to 3, and an insulating sheet is sandwiched between each of the two sheets.
  4. 根据权利要求1所述的逆变直流电阻焊机高频变压器，其特征在于，所述铁芯由两副CD型纳米晶材料构成的E字型铁芯进行组合而成。The high-frequency transformer for an inverter DC resistance welding machine according to claim 1, wherein the iron core is formed by combining two E-shaped iron cores composed of two CD-type nanocrystalline materials.
  5. 根据权利要求1所述的逆变直流电阻焊机高频变压器，其特征在于，初级线包的数量选择3至19个，每个初级线包采用厚为0.3至1毫米、宽为1.5至6毫米的扁电磁线，由里向外反向等匝数绕制而成。The high frequency transformer for an inverter DC resistance welder according to claim 1, wherein the number of primary wire packages is selected from 3 to 19, and each primary wire package has a thickness of 0.3 to 1 mm and a width of 1.5 to 6. The millimeter flat magnet wire is wound from the inside to the outside and is twisted.
  6. 根据权利要求1所述的逆变直流电阻焊机高频变压器，其特征在于，所述次级线包数量选择4至20个，每两个正反方向连接的次级线包串联组成一次级线包组，次级线包两端分别连接两块引线板，中间连接中心抽头。The high-frequency transformer of the inverter DC resistance welding machine according to claim 1, wherein the number of the secondary wire packages is 4 to 20, and the secondary wires connected in the forward and reverse directions are connected in series to form a primary stage. In the wire package group, two lead plates are respectively connected at two ends of the secondary wire package, and the center tap is connected in the middle.
  7. 根据权利要求1所述的逆变直流电阻焊机高频变压器，其特征在于，所述次级线包的薄铜板两端分别设有凸部，引线板和中心抽头设有与次级线包的凸部相配合的凹槽。The high-frequency transformer of the inverter DC resistance welding machine according to claim 1, wherein the two ends of the thin copper plate of the secondary wire package are respectively provided with convex portions, and the lead plates and the center taps are provided with the secondary wire package. The convex portion cooperates with the groove.
  8. 根据权利要求1至6任意项所述的逆变直流电阻焊机高频变压器，其特征在于，所述整流散热器包括正极板、回字型板、引线板、平面二极管、负板 板和中心抽头；正极板与回字型板连接，负极板与中心抽头连接，负极板从回字型板中间穿插并且与回字型板之间绝缘，引线板设置在回字型板两侧，平面二极管夹在回字型板与引线板之间，回字型板、引线板、平面二极管和负板板通过蝶形弹性组件进行固定压紧。The high frequency transformer for an inverter DC resistance welding machine according to any one of claims 1 to 6, wherein the rectifying heat sink comprises a positive electrode plate, a return type plate, a lead plate, a planar diode, and a negative plate. The plate and the center tap; the positive plate is connected to the back plate, the negative plate is connected to the center tap, the negative plate is interposed from the middle of the return plate and insulated from the return plate, and the lead plate is disposed on both sides of the return plate The planar diode is sandwiched between the return type plate and the lead plate, and the return type plate, the lead plate, the planar diode and the negative plate are fixedly pressed by the butterfly elastic component.
  9. 根据权利要求7所述的逆变直流电阻焊机高频变压器，其特征在于，所述正极板、回字型板、引线板、中心抽头和负板板的内部设置有散热水道，在整流散热器的两侧安装有两块绝缘的过水板，过水板用以连接各散热水道的进出水口。The high-frequency transformer of the inverter DC resistance welding machine according to claim 7, wherein the positive electrode plate, the return type plate, the lead plate, the center tap and the negative plate are internally provided with a heat dissipating water channel for rectifying heat dissipation. Two insulated water-passing plates are installed on both sides of the device, and the water-passing plate is used to connect the water inlet and outlet of each heat-dissipating water channel.
  10. 根据权利要求7所述的逆变直流电阻焊机高频变压器，其特征在于，所述引线板与回字型板之间还设有支撑板，支撑板中间设置容纳平面二极管的空间，支撑板的厚度与平面二极管厚度相当。 The high-frequency transformer of the inverter DC resistance welding machine according to claim 7, wherein a support plate is further disposed between the lead plate and the letter-shaped plate, and a space for accommodating the planar diode is arranged in the middle of the support plate, and the support plate is The thickness is comparable to the thickness of the planar diode.
PCT/CN2015/075216 2015-03-27 2015-03-27 Inverter direct-current resistance welding machine high-frequency transformer WO2016154793A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2015/075216 WO2016154793A1 (en) 2015-03-27 2015-03-27 Inverter direct-current resistance welding machine high-frequency transformer
CN201580068740.1A CN107210121A (en) 2015-03-27 2015-03-27 Inversion direct current resistance welder high frequency transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/075216 WO2016154793A1 (en) 2015-03-27 2015-03-27 Inverter direct-current resistance welding machine high-frequency transformer

Publications (1)

Publication Number Publication Date
WO2016154793A1 true WO2016154793A1 (en) 2016-10-06

Family

ID=57003761

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/075216 WO2016154793A1 (en) 2015-03-27 2015-03-27 Inverter direct-current resistance welding machine high-frequency transformer

Country Status (2)

Country Link
CN (1) CN107210121A (en)
WO (1) WO2016154793A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05217771A (en) * 1992-01-31 1993-08-27 Kayaba Ind Co Ltd Transformer
CN101422846A (en) * 2008-08-29 2009-05-06 深圳市鸿栢科技实业有限公司 High-frequency invert direct-current point-welding device
CN103078521A (en) * 2013-01-12 2013-05-01 华南理工大学 Air-cooled high-power high-frequency switching power supply transformation rectification device
CN103366932A (en) * 2013-08-02 2013-10-23 深圳市鸿栢科技实业有限公司 Middle-high-frequency transformer
CN203760299U (en) * 2014-02-28 2014-08-06 上海沪工焊接集团股份有限公司 Transformer of inverter welding machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012174699A (en) * 2011-02-17 2012-09-10 Koyo Giken:Kk Welding transformer
CN202632963U (en) * 2011-06-08 2012-12-26 深圳市鸿栢科技实业有限公司 Water-cooled sub-high frequency transformer and radiation device for same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05217771A (en) * 1992-01-31 1993-08-27 Kayaba Ind Co Ltd Transformer
CN101422846A (en) * 2008-08-29 2009-05-06 深圳市鸿栢科技实业有限公司 High-frequency invert direct-current point-welding device
CN103078521A (en) * 2013-01-12 2013-05-01 华南理工大学 Air-cooled high-power high-frequency switching power supply transformation rectification device
CN103366932A (en) * 2013-08-02 2013-10-23 深圳市鸿栢科技实业有限公司 Middle-high-frequency transformer
CN203760299U (en) * 2014-02-28 2014-08-06 上海沪工焊接集团股份有限公司 Transformer of inverter welding machine

Also Published As

Publication number Publication date
CN107210121A (en) 2017-09-26

Similar Documents

Publication Publication Date Title
CN103779043B (en) Great-power electromagnetic component
KR20130062056A (en) Water-cooled type secondary battery
CN103366932B (en) Medium/high frequency transformer
US8952286B2 (en) Resistance welding high frequency transformer and spot welding machine
CN112820515B (en) Power supply device for low-voltage large current
US20140116651A1 (en) Heat sink applicable for eletromagnetic device
CN213124085U (en) Water-cooling rectifier module and parallel module thereof
CN202889177U (en) Water-cooling high power high frequency switching power supply device
WO2016154793A1 (en) Inverter direct-current resistance welding machine high-frequency transformer
CN201466976U (en) Integrated high-frequency rectifier device
CN215356681U (en) Low-voltage high-current welding power supply device
CN103042290B (en) Miniature heatproof moisture-proof welder
CN202169436U (en) Water-cooling high-frequency transformer and cooling device of high-frequency transformer
CN201233799Y (en) Rectifying transformer
CN101409141B (en) Rectifier transformer and use method thereof
CN202231625U (en) Water-cooling heat dissipation high-frequency rectifier and heat dissipating device thereof
CN205282266U (en) High frequency invertion power supply
CN102957302A (en) Water-cooled high-power high-frequency switching power supply device
CN216388988U (en) Voltage transformation device
CN215377145U (en) Heat dissipation type transformer core
CN221125667U (en) Assembled heat radiator for high-frequency transformer
KR20140002406A (en) Clipon type radiator for transformer
KR101508247B1 (en) Compact type Large Capacity Rectifier System
CN211601660U (en) Scale prevention plate type cooler
CN215955006U (en) Finned radiator for transformer with efficient heat dissipation

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15886780

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15886780

Country of ref document: EP

Kind code of ref document: A1