CN201020597Y - Inverter welding power source - Google Patents
Inverter welding power source Download PDFInfo
- Publication number
- CN201020597Y CN201020597Y CNU2006201578908U CN200620157890U CN201020597Y CN 201020597 Y CN201020597 Y CN 201020597Y CN U2006201578908 U CNU2006201578908 U CN U2006201578908U CN 200620157890 U CN200620157890 U CN 200620157890U CN 201020597 Y CN201020597 Y CN 201020597Y
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- welding
- pwm generator
- power
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Abstract
The utility model relates to an inversion welding power source, consisting of a control power circuit, a power drive circuit, a welding output circuit, a PWM generator and a current adjusting circuit, wherein an output testing circuit is connected with the welding output circuit to test the output voltage; the output end of the output testing circuit is connected with the PWM generator, and the output voltage signals are replied to the PWM generator circuit. When the output of the welding machine is short-circuited for a certain period of time, frequency of the power switch can be automatically reduced to decrease the output current, which can protect the principal power tube of the welding machine and can improve the reliability of the welding machine.
Description
Technical field
The utility model relates to a kind of inversion welding source, refers to a kind of inversion welding source in order to electric welding machine especially.
Background technology
At present; in mechanical connection work; all to use electric welding work; electric welding is to adopt big electric current; the operating circuit of low-voltage; can produce very high heat when utilizing short circuit and melt metal; thereby connected piece is linked together, and electric welding is to rely on transformer that the voltage transitions of 220V or 380V is become the low-voltage, high-current signal at work; because at work; traditional welding machine is exported the not protection simultaneously of general current/voltage, if the output short circuit duration is longer, driving pulse is compressed to the narrowest; switching frequency is higher; bigger as short circuit current, the temperature rise of welding machine main power tube is at this moment risen very fast, the welding machine job insecurity.(because the switching loss of IGBT switching tube is four times of turn-on consumption) might cause welding machine to damage or the life-span reduces.
The control power unit of the inversion welding source on the open market all is to adopt the Industrial Frequency Transformer step-down, and volume is bigger, and the power utilization rate is low, the circuit complexity.
Summary of the invention
The utility model provides a kind of inversion welding source, at above-mentioned habit the existing defective of technology is arranged, and it is a kind of behind the welding machine output short-circuit that main purpose is to provide, and can fall end power main switch frequency automatically, reduces output current.Guarantee the inversion welding source of welding machine main power tube.
Another purpose of the utility model is to be this inversion welding source, provides that a kind of volume is little, the life-span long, in light weight, control power circuit that utilization rate is high.
For realizing above-mentioned purpose, the following technical scheme of the utility model: inversion welding source, constitute by control power circuit, power driving circuit, welding output circuit, PWM generator, current regulating circuit, the output that is connected to output detection circuit, is used to detect output voltage, output detection circuit that links to each other with welding output circuit is connected to the PWM generator circuit, simultaneously output voltage signal is fed back in the PWM generator circuit.
In described control power circuit, adopted the high frequency electric source integrated circuit in addition, utilization high frequency principle, reduced volume greatly not only, and also power utilization also improves greatly.
In output detection circuit, adopt photoelectricity to be coupled and realized that signal is isolated and conversion, improved security.
The utility model has technology to compare with habit, and its beneficial effect is as follows:
Traditional welding machine output current voltage is not protection simultaneously generally, and during the welding terminal short circuit, driving pulse narrows down, and switching frequency is higher, and is bigger as short circuit current, and the temperature rise of main power tube is at this moment risen very fast, the welding machine job insecurity.So this circuit has added output voltage detecting circuit, between the electric circuit inspection output short-circuit, will control and fall end switching frequency automatically, reduce output current, reduce the output of welding machine main power tube, guarantee the reliability of welding machine.
Adopted the high frequency electric source integrated circuit in the control power circuit of the present utility model, utilization high frequency principle, reduced volume greatly not only, and also power utilization also improves greatly.
In output detection circuit, adopt photoelectricity to be coupled and realized that signal is isolated and conversion, improved security.
Description of drawings
Fig. 1 is the utility model circuit theory diagrams;
1, power driving circuit 2, control power circuit 3, high frequency electric source integrated circuit 4, PWM generator 5, current regulating circuit 6, output detection circuit 7, photoelectrical coupler 8, welding output circuit
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further described.
See also that technical solutions of the utility model are shown in Fig. 1 functional-block diagram: inversion welding source, constitute by control power circuit (2), power driving circuit (1), welding output circuit (8), PWM generator (4), current regulating circuit (5), the output that is connected to output detection circuit (6), is used to detect output voltage, output detection circuit (6) that links to each other with welding output circuit (8) is connected to PWM generator circuit (4), and output voltage signal is fed back in the PWM generator circuit (4).
In described control power circuit, adopted high frequency electric source integrated circuit (3) ISO4, utilization high frequency principle, reduced volume greatly not only, and also power utilization also improves greatly.
In output detection circuit, adopt photoelectrical coupler (7) to realize the signal isolation, improved security.
The above, only be that this practicality imposes any restrictions technical scope of the present utility model, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. inversion welding source, constitute by control power circuit, power driving circuit, welding output circuit, PWM generator, current regulating circuit, it is characterized in that: the output that is connected to output detection circuit, is used to detect output voltage, output detection circuit that links to each other with welding output circuit is connected to the PWM generator circuit, simultaneously output voltage signal is fed back in the PWM generator circuit.
2. according to the described inversion welding source of claim 1, it is characterized in that: described control power circuit comprises the high frequency electric source integrated circuit.
3. according to claim 1 or 2 described inversion welding sources, it is characterized in that: the voltage signal of described output detection circuit is to finish picking up of voltage signal by the photoelectrical coupler that is connected output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201578908U CN201020597Y (en) | 2006-10-31 | 2006-10-31 | Inverter welding power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201578908U CN201020597Y (en) | 2006-10-31 | 2006-10-31 | Inverter welding power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201020597Y true CN201020597Y (en) | 2008-02-13 |
Family
ID=39088004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201578908U Expired - Fee Related CN201020597Y (en) | 2006-10-31 | 2006-10-31 | Inverter welding power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201020597Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954527A (en) * | 2010-09-06 | 2011-01-26 | 广州市花都区劲力源电器配件厂 | Miniature inverter welder circuit |
| CN101791735B (en) * | 2010-01-08 | 2013-09-11 | 杭州凯尔达电焊机有限公司 | Method and device for controlling inverse welding machine without output end feedback |
| CN106374750A (en) * | 2016-09-19 | 2017-02-01 | 宁夏吴忠市好运电焊机有限公司 | Current-limiting pulse width double power supply inverter-type welding and cutting power supply circuit |
-
2006
- 2006-10-31 CN CNU2006201578908U patent/CN201020597Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101791735B (en) * | 2010-01-08 | 2013-09-11 | 杭州凯尔达电焊机有限公司 | Method and device for controlling inverse welding machine without output end feedback |
| CN101954527A (en) * | 2010-09-06 | 2011-01-26 | 广州市花都区劲力源电器配件厂 | Miniature inverter welder circuit |
| CN106374750A (en) * | 2016-09-19 | 2017-02-01 | 宁夏吴忠市好运电焊机有限公司 | Current-limiting pulse width double power supply inverter-type welding and cutting power supply circuit |
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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: ZHEJIANG PROVINCE JUBA WELDING EQUIPMENT MANUFACTU Free format text: FORMER OWNER: CAO ZAIHUA Effective date: 20090731 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090731 Address after: Zhejiang city in Wenling Province, Hangzhou Wen Da Xi Zhen Shan No. 30, zip code: 317525 Patentee after: Zhejiang Juba Welding Equipments Manufacturing Co., Ltd. Address before: Jin Shandong road in Zhejiang province Wenling City Zeguo town No. 7, zip code: 317521 Patentee before: Cao Zaihua |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080213 Termination date: 20101031 |