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A special power supply system for filament micro-connection

A power system and micro-connection technology, applied in welding power sources, welding power sources, etc., can solve the problems of poor discharge current waveform adjustability, difficulty in application, and inability to accurately control the welding heating process.

Inactive Publication Date: 2016-05-25
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The capacitor energy storage welding machine can provide concentrated energy to the welding area in a very short time, but its main disadvantage is that the discharge current waveform during the welding process is poorly adjustable, and the current control cannot be performed, so the welding heating process cannot be precisely controlled. This is difficult to apply to some demanding and precise welding products

Method used

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  • A special power supply system for filament micro-connection
  • A special power supply system for filament micro-connection
  • A special power supply system for filament micro-connection

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing.

[0021] The invention consists of two parts: an inverter high-power switching power supply with adjustable output voltage and an arbitrary current waveform output circuit, see figure 1 , the arbitrary current waveform output circuit is composed of a single chip microcomputer and 9 constant current circuits formed by power transistors ( figure 1 There are 4 concretely shown in ), and the 9 IO ports of the microcontroller control the switching state of the power transistor, which realizes the arbitrary control of the current output waveform within a certain period of time when the micro-connection is energized, making it possible to use the best current waveform filament connection, ensuring It outputs constant current according to a given value, and opens up a new current waveform arbitrary control spot welding method. It is an ideal precision resistance thermal micro-connect...

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Abstract

The invention provides a special power system for filament micro connection. The system comprises an inversion-type high-power switched-mode power source adjustable in output voltage and a current waveform output circuit; the current waveform output circuit comprises a single-chip microcomputer and two or more constant-current circuits; all the constant-current circuits are respectively connected with the inversion-type high-power switched-mode power source and the single-chip microcomputer. The special power system for filament micro connection is a novel power source for resistant heat filament micro connection based on the ATmega8 single-chip microcomputer, the power source system can output micro connection currents with any waveform within a required time range, and the extra-thin filament connection requirement can be fully met; the special power system for filament micro connection can also be used in the field of manufacturing of micro components and other fields, and a new method is created for achievement of precise welding of micro metal parts.

Description

technical field [0001] The invention belongs to the technical field of filament welding, and in particular relates to a special power supply system for filament micro-connection. Background technique [0002] Micro-joint welding is a method of combining the workpieces and applying pressure through the electrodes, using the resistance heat generated by the current passing through the contact surface of the joint and the adjacent area for welding. It is a method to heat it to a molten or plastic state by using the resistance heating effect generated by the current flowing through the contact surface of the workpiece and the adjacent area, and the heating temperature and time are different to form a metal bond. When the resistance welding nugget is formed, it is always surrounded by a plastic ring, the molten metal is isolated from the air, and the metallurgical process is simple. The heating time is short and the heat is concentrated, so the heat-affected zone is small, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K11/24
CPCB23K11/241
Inventor 朱援祥黎桥成正辉
Owner WUHAN UNIV
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