CN215897598U

CN215897598U - Vacuum ionization rectangular wave power supply

Info

Publication number: CN215897598U
Application number: CN202121778497.1U
Authority: CN
Inventors: 任锋; 邹学进; 耿博; 任俊; 任浩鑫; 刘刚
Original assignee: Jiangyin Tianma Power Supply Making Co ltd
Current assignee: Jiangyin Tianma Power Supply Making Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-02-22
Anticipated expiration: 2031-08-02

Abstract

The utility model relates to a vacuum ionization rectangular wave power supply.A rectangular wave is output after alternating current passes through a rectifier bridge, a filter circuit, an inverter, a transformer, a rectifier filter circuit and a chopper circuit; the filter circuit comprises a reactor, a filter resistor, a divider resistor and a discharge capacitor, one end of the reactor is connected with the positive output end of the rectifier bridge, the other end of the reactor is connected with an input end of the inverter after passing through the filter resistor, the other input end of the inverter is connected with the negative output end of the rectifier bridge, the filter capacitor is connected between the two input ends of the inverter, the positive output end of the rectifier bridge is connected with the negative output end of the rectifier bridge after passing through the reactor, the filter resistor and the two series-connected divider resistors, and the two divider resistors are connected with the discharge capacitor in parallel. According to the utility model, the generation of ripples is reduced through the charging capacitor, and the chopping function is realized through the IGBT module, so that the waveform quality is improved; meanwhile, the heat dissipation capacity is improved in a water cooling mode.

Description

Vacuum ionization rectangular wave power supply

Technical Field

The utility model relates to a power supply, in particular to a rectangular wave power supply applied to vacuum ion plating, and belongs to the technical field of power supplies.

Background

Vacuum ion plating is a method of heating a metal under a high vacuum condition to melt, evaporate, and cool the metal, thereby forming a metal film on the surface of an object such as plastic. In order to improve the quality of the electroplated layer, a pulse electroplating mode is adopted nowadays, and two ways are available for improving the quality of the electroplated layer by pulse electroplating: the method comprises the following steps of improving the conventional electroplating solution formula, adding additives, adjusting the pH value and the temperature, stirring the electroplating solution (or moving a cathode), and changing the geometric sizes of an electrode and an electroplating tank; however, the improved electroplating solution has the risk of environmental pollution, the improvement cost is higher, and the popularization value is not high; improving the power supply, changing the current waveform generated by the power supply and controlling parameters; the mode is convenient to change, and the conventional equipment is convenient to upgrade and reform the power supply, so that the mode is widely popularized. Therefore, the pulse power supply nowadays becomes one of important devices for purchasing and upgrading in large quantity in the vacuum ion plating industry, but the conventional pulse power supply is not specially developed for the vacuum ion plating industry, so that two defects exist: the ripple interference in the power supply waveform is more, and the response speed of the pulse generating circuit is slower, so that the waveform distortion is easily caused; secondly, the heat dissipation performance is insufficient, the power supply has high heat productivity due to the continuous 24-hour working characteristic of vacuum ion plating and low power, and the heat accumulation during long-time working easily causes component failure and further influences the performance of the power supply. In view of the foregoing, there is a need for a dedicated power supply that can solve the above problems.

Disclosure of Invention

The utility model aims to overcome the defects and provide a vacuum ionization rectangular wave power supply, which reduces the generation of ripples through a charging capacitor and improves the waveform quality by realizing a chopping function through an IGBT module; meanwhile, the heat dissipation capacity is improved in a water cooling mode.

The purpose of the utility model is realized as follows:

a vacuum ionization rectangular wave power supply is characterized in that alternating current outputs rectangular waves after passing through a rectifier bridge, a filter circuit, an inverter, a transformer, a rectification filter circuit and a chopper circuit; the filter circuit comprises a reactor, a filter resistor, a divider resistor and a discharge capacitor, one end of the reactor is connected with the positive output end of the rectifier bridge, the other end of the reactor is connected to an input end of the inverter after passing through the filter resistor, the other input end of the inverter is connected with the negative output end of the rectifier bridge, the filter capacitor is connected between the two input ends of the inverter, the positive output end of the rectifier bridge is connected to the negative output end of the rectifier bridge after passing through the reactor, the filter resistor and the two series-connected divider resistors, and the two divider resistors are connected with the discharge capacitor in parallel.

Further, chopper circuit includes IGBT module one, IGBT module two, IGBT module three and IGBT module four, rectifier filter circuit's positive output end is connected to IGBT module one and IGBT module three's collecting electrode, GBT module one and IGBT module three's emitter is connected to IGBT module two and IGBT module four's collecting electrode respectively, the emitter of IGBT module two and IGBT module four's collecting electrode all is connected to rectifier filter circuit's negative output, IGBT module one's emitter is connected to leading-out terminal's positive pole, IGBT module three's emitter is connected to leading-out terminal's negative pole.

Furthermore, a circuit board for mounting alternating current and an inverter through a rectifier bridge is attached to one water cooling bar, a filter resistor and two divider resistors are arranged on the water cooling bar, a reactor and a transformer are positioned between the two water cooling bars, the circuit board for mounting a rectifier filter circuit and a chopper circuit is attached to the other water cooling bar, and an inlet terminal and an outlet terminal are respectively mounted on two sides of a back plate of the box body; the two water-cooling rows are arranged in the box body, a water inlet joint connected to a water inlet of one water-cooling row penetrates through the back plate of the box body, a water outlet of the water-cooling row is connected to a water inlet of the other water-cooling row through a pipeline, and a water outlet joint connected to a water outlet of the other water-cooling row penetrates through the back plate of the box body.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the high-capacity charging capacitor is added to play a role in peak clipping and valley suppression, so that the generation of ripple waves is avoided, the IGBT module is used as a chopper circuit to operate to form a rectangular wave shape, and the waveform quality is ensured and the overall quality of the power supply is improved based on the quick response of the IGBT module.

Drawings

FIG. 1 is a schematic structural diagram of a vacuum ionization square wave power supply according to the present invention (with side covers and top cover removed).

FIG. 2 is another schematic view of the vacuum ionized rectangular wave power supply of FIG. 1 according to the present invention.

FIG. 3 is a top view of a vacuum ionized rectangular wave power supply of the present invention shown in FIG. 1.

FIG. 4 is a front view of a vacuum ionized square wave power supply of the present invention, FIG. 3.

FIG. 5 is a rear view of a vacuum ionized square wave power supply of the present invention as shown in FIG. 3.

FIG. 6 is a left side view of a vacuum ionized rectangular wave power supply of the present invention shown in FIG. 3.

FIG. 7 is a simplified circuit diagram of a vacuum ionization square wave power supply of the present invention.

Wherein:

the water cooling device comprises a box body 1, a water cooling bar 2, an air switch 3, an incoming line terminal 4 and an outgoing line terminal 5;

a water inlet joint 2.1 and a water outlet joint 2.2;

a rectifier bridge 101, a reactor 102, a filter resistor 103, a voltage dividing resistor 104, a discharge capacitor 105, an inverter 106, a transformer 107, a rectifier filter circuit 108, a chopper circuit 109, and a sampling circuit 110;

relay KM 1.

Detailed Description

Referring to fig. 7, according to the vacuum ionization rectangular wave power supply of the present invention, ac power is guided by the incoming line terminal 4, passes through the air switch 3, and then passes through the rectifier bridge 101, the filter circuit, the inverter 106, the transformer 107, the rectifier filter circuit 108, and the chopper circuit 109, and then is output as a rectangular wave power supply;

the filter circuit comprises a reactor 102, a filter resistor 103, a divider resistor 104 and a discharge capacitor 105, wherein one end of the reactor 102 is connected with the positive output end of the rectifier bridge 101, the other end of the reactor 102 is connected with one input end of the inverter 106 after passing through the filter resistor 103, the other input end of the inverter 106 is connected with the negative output end of the rectifier bridge 101, the filter capacitor is connected between the two input ends of the inverter 106 (the inverter 106 is composed of an IGBT (insulated gate bipolar translator) arranged on a circuit board, and the filter capacitor between the two input ends of the inverter 106 is also arranged on the IGBT circuit board), the positive output end of the rectifier bridge 101 is connected with the negative output end of the rectifier bridge 101 after passing through the reactor 102, the filter resistor 103 and the two series-connected divider resistors 104, and the two divider resistors 104 are respectively connected with the discharge capacitor 105 in parallel; the filter resistor 103 and the two voltage dividing resistors 104 are metal resistors; the metal resistor, namely the metal film resistor, adopts a vacuum evaporation or sputtering method to enable special metal or alloy to form a resistance film layer on the surface of ceramic or glass.

The chopper circuit 109 comprises a first IGBT module Q51, a second IGBT module Q61, a third IGBT module Q71 and a fourth IGBT module Q81, the positive output end of the rectifying and filtering circuit 108 is connected to the collectors of the first IGBT module Q51 and the third IGBT module Q71, the emitters of the first GBT module Q51 and the third IGBT module Q71 are respectively connected to the collectors of the second IGBT module Q61 and the fourth IGBT module Q81, the emitters of the collectors of the second IGBT module Q61 and the fourth IGBT module Q81 are both connected to the negative output end of the rectifying and filtering circuit 108, the emitter of the first IGBT module Q51 is connected to the positive electrode of the outgoing line terminal 5, and the emitter of the third IGBT module Q71 is connected to the negative electrode of the outgoing line terminal 5.

Referring to fig. 1-6, the circuits are all installed in a box body 1, two water cooling rows 2 are inserted into the box body 1, a water inlet connector 2.1 connected to a water inlet of one water cooling row 2 penetrates through a back plate of the box body 1, a water outlet of the water cooling row 2 is connected to a water inlet of the other water cooling row 2 through a pipeline, and a water outlet connector 2.2 connected to a water outlet of the other water cooling row 2 penetrates through the back plate of the box body 1.

The installation alternating current passes through rectifier bridge 101 and inverter 106's circuit board and pastes on a water-cooling row 2, and filter resistance 103 and two divider resistance 104 all set up on this water-cooling row 2, and discharge capacitance 105 is close to this water-cooling row 2 and sets up, and reactor 102 and transformer 107 are located between two water-cooling rows 2, and the circuit board of installation rectification filter circuit 108 and chopper circuit 109 pastes on another water-cooling row 2, inlet wire terminal 4 and outlet wire terminal 5 are installed respectively to the backplate both sides of box 1. The water cooling bar is an aluminum bar structure with a cooling water channel inside, for example, the busbar structure in the chinese patent CN201320865892.2 "fully-enclosed water-cooled high-power high-frequency switching power supply" applied by the company is a typical water cooling bar structure, and the patent includes but is not limited to the water cooling bar structure in the cited patent, and the rest of the water cooling bars capable of realizing the water cooling effect are within the protection scope of the patent.

The input end and the output end of the chopper circuit 109 are respectively sleeved with a sampling circuit 110 formed by a Hall device, and the sampling circuits are used for monitoring input and output waveforms, so that PWM control waveforms of the inverter 106 and the chopper circuit 109 formed by IGBTs can be adjusted in time, more accurate rectangular waveforms can be obtained, and the operation effect of vacuum ion plating is improved. An igbt (insulated Gate Bipolar transistor) is an insulated Gate Bipolar transistor, and is a composite fully-controlled voltage-driven power semiconductor device composed of BJT (Bipolar junction transistor) and MOS (insulated Gate field effect transistor), and has the advantages of both high input impedance of MOSFET and low on-state voltage drop of GTR. Namely, the GTR saturation voltage reduction and the large current carrying density are integrated; and the MOSFET has the advantage of high switching speed; the advantages of the pulse power supply are perfectly matched (the rectangular wave power supply is a special form of the pulse power supply).

The connecting pipeline between the two water cooling rows 2 is arranged in the connecting block, namely, the two water cooling rows 2, the connecting block and the back surface of the box body 1 form a space for accommodating the reactor 102 and the transformer 107, and the heat-conducting insulating glue is poured and cured in the space to form a glue-pouring block, so that the heat dissipation performance of two heat dissipation power devices is guaranteed. Or the opposite surfaces of the two water cooling rows 2 are provided with radiating fins, the reactor 102 and the transformer 107 are not subjected to glue pouring treatment at the moment, but an air draft fan is arranged on the back surface of the box body 1 and is communicated with the space for accommodating the reactor 102 and the transformer 107, so that heat in the space and heat on the radiating fins of the water cooling rows 2 are continuously discharged.

A plurality of control boards of the power supply and accessories of the circuits are attached to the two water cooling rows 2, and PWM driving signals of the inverter 106 and the chopper circuit 109 are generated by PWM controllers on the control boards. The PWM driving signal is a method for digitally coding the level of an analog signal, and the duty ratio of a square wave is modulated to code the level of a specific analog signal by using a high-resolution counter, so that the fast response characteristic of an IGBT is matched, and a perfect square wave waveform (namely a rectangular wave waveform) can be obtained.

And a liquid crystal display screen arranged on a panel of the box body 1 is connected with a microprocessor on the control panel through a display driving circuit on the control panel.

Meanwhile, in order to further reduce ripple interference, a relay KM1 can be connected in parallel to the filter resistor 103, the relay KM1 is controlled by a microcontroller on a control board, the relay KM1 is linked with the charging capacitor 105, when the power supply is started, the relay KM1 is opened, the charging capacitor 105 is in a charging state at the moment, a time threshold is determined according to the capacitance value of the charging capacitor 105 and the resistance value of the filter resistor 103, after the time reaches a preset time threshold, the relay KM1 closes the short-circuit filter resistor 103, an LC filter circuit is formed at the moment, the charging capacitor 105 is charged at the rear in the whole process, and ripple interference caused by surge current during starting is avoided. And the alternating current state of the input end can be judged according to the current signal acquired by the subsequent sampling circuit 110, so that the on-off state and the on-off time of the relay KM1 are determined, and more intelligent power supply management is realized.

In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.

Claims

1. A vacuum ionization rectangular wave power supply is characterized in that alternating current outputs rectangular waves after passing through a rectifier bridge (101), a filter circuit, an inverter (106), a transformer (107), a rectification filter circuit (108) and a chopper circuit (109); the method is characterized in that:

the filter circuit comprises a reactor (102), a filter resistor (103), a divider resistor (104) and a discharge capacitor (105), one end of the reactor (102) is connected with the positive output end of the rectifier bridge (101), the other end of the reactor is connected to one input end of the inverter (106) after passing through the filter resistor (103), the other input end of the inverter (106) is connected with the negative output end of the rectifier bridge (101), the filter capacitor is connected between the two input ends of the inverter (106), the positive output end of the rectifier bridge (101) is connected to the negative output end of the rectifier bridge (101) after passing through the reactor (102), the filter resistor (103) and the two series-connected divider resistors (104), and the two divider resistors (104) are respectively connected with the two discharge capacitors (105) in parallel.

2. The vacuum ionization square wave power supply of claim 1, wherein: chopper circuit (109) includes IGBT module one, IGBT module two, IGBT module three and IGBT module four, the anodal output of rectification filter circuit (108) is connected to IGBT module one and IGBT module three's collecting electrode, GBT module one is connected to IGBT module two and IGBT module four's collecting electrode respectively with IGBT module three's emitting electrode, the emitting electrode of IGBT module two and IGBT module four's collecting electrode all is connected to the negative output of rectification filter circuit (108), IGBT module one's emitting electrode is connected to the anodal of leading-out terminal (5), IGBT module three's emitting electrode is connected to the negative pole of leading-out terminal (5).

3. The vacuum ionization square wave power supply according to claim 1 or 2, wherein: the method comprises the steps that alternating current is installed and attached to one water cooling bar (2) through a rectifier bridge (101) and a circuit board of an inverter (106), a filter resistor (103) and two divider resistors (104) are arranged on the water cooling bar (2), a reactor (102) and a transformer (107) are located between the two water cooling bars (2), the circuit board provided with a rectifier filter circuit (108) and a chopper circuit (109) is attached to the other water cooling bar (2), and an inlet terminal (4) and an outlet terminal (5) are installed on two sides of a back plate of a box body (1) respectively;

the two water-cooling rows (2) are arranged in the box body (1), a water inlet connector (2.1) connected to the water inlet of one water-cooling row (2) penetrates through the back plate of the box body (1), the water outlet of the water-cooling row (2) is connected to the water inlet of the other water-cooling row (2) through a pipeline, and a water outlet connector (2.2) connected to the water outlet of the other water-cooling row (2) penetrates through the back plate of the box body (1).