Power supply circuit capable of effectively improving welding effect of ultrasonic mask, and control method thereof
A power circuit and ultrasonic technology, applied in the direction of high-efficiency power electronic conversion, electrical components, output power conversion devices, etc., can solve the problems of inability to achieve frequency tracking, inability to achieve high power, inability to adapt to loads, etc., to facilitate digital control, The effect of high power and withstand power output
Pending Publication Date: 2021-01-15
杭州瑞利超声科技有限公司
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Problems solved by technology
[0003] Transistors work in the non-linear region, with large loss, low frequency, poor working stability, poor start-up ability, unable to achieve frequency tracking, unable to adapt to changes in loads caused by heat and loss, resulting in the transducer no longer in a resonant state. Can not achieve high power, poor efficiency and accuracy
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[0042]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0043] see Figures 1 to 3 , the present invention provides a technical solution: a power circuit that effectively improves the welding effect of ultrasonic masks, including a rectifier circuit, a power control circuit, a power transformer circuit and an ultrasonic transducer,
[0044] The input end of the rectification circuit is connected to an external commercial power supply, a compensation capacitor is connected in parallel to the output end of the rectifi...
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The invention relates to the technical field of ultrasonic driving power supplies, and concretely relates to a power supply circuit capable of effectively improving the welding effect of an ultrasonicmask. The power supply circuit comprises a rectifying circuit, a power control circuit, a power supply voltage transformation circuit and an ultrasonic transducer, the input end of the rectifying circuit is connected with an external electric supply, the output end of the rectifying circuit is connected with a compensation capacitor in parallel, the power input end of the power control circuit isconnected with the output end of the rectifying circuit, the power supply transformation circuit comprises a transformer and an inductance coil, and the power control circuit comprises a controller,a sampling circuit and an inversion control circuit. The power supply circuit can automatically track the frequency when the load resonant frequency changes, and has the advantages of high power, highefficiency, strong anti-interference capability, stable and reliable work and the like.
Description
technical field [0001] The invention relates to the technical field of ultrasonic driving power supply, and the specific field is a power circuit for effectively improving the welding effect of ultrasonic masks. Background technique [0002] The traditional ultrasonic mask welding power supply uses an oscillator to generate high-frequency signals, which are amplified to generate ultrasonic waves. The transducer is regarded as a capacitive load, regardless of the charging and discharging process caused by the expansion and contraction of piezoelectric ceramics during normal operation of the transducer and Adverse effects of other dynamic characteristics on the power supply. [0003] Transistors work in the non-linear region, with large loss, low frequency, poor working stability, poor start-up ability, unable to achieve frequency tracking, unable to adapt to changes in loads caused by heat and loss, resulting in the transducer no longer in a resonant state. Can not achieve h...
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IPC IPC(8): H02M7/5387H02M1/08H02M1/38
CPCH02M1/083H02M1/38H02M7/53871H02M1/0058Y02B70/10
Inventor 余剑云王钊利易向阳黄建强张学鑫
Owner 杭州瑞利超声科技有限公司