CN203219278U

CN203219278U - Electric level converting circuit for solar energy cell ion implantor

Info

Publication number: CN203219278U
Application number: CN 201320058095
Authority: CN
Inventors: 金则军; 钟新华; 罗宏洋; 易文杰
Original assignee: CETC 48 Research Institute
Current assignee: CETC 48 Research Institute
Priority date: 2013-02-01
Filing date: 2013-02-01
Publication date: 2013-09-25
Anticipated expiration: 2023-02-01

Abstract

The utility model discloses an Electric level converting circuit for a solar energy cell ion implantor; the circuit comprises a signal connecting seat and a high speed optical coupler; a first and a third interfaces of the signal connecting seat are respectively connected with a first input terminal and a third input terminal of the high speed optical coupler; a second interface and a fourth interface of the signal connecting seat are respectively connected with a second input terminal and a fourth input terminal of the high speed optical coupler; a fifth interface of the signal connecting seat is connected with the a first output terminal and a fourth output terminal of the high speed optical coupler; a sixth interface and a seventh interface of the signal connecting seat are respectively connected with a second output terminal and a third output terminal of the high speed optical coupler; an eighth interface of the signal connecting seat is connected with the first and the fourth output terminals of the high speed optical coupler; and the first output terminal of the high speed optical coupler is connected with the fourth output terminal of the high speed optical coupler through a filter capacitor. The electric level converting circuit for the solar energy cell ion implantor solves a problem that a motor control panel cannot directly communicate with a digit input panel.

Description

A kind of solar battery sheet ion implantor level shifting circuit

Technical field

The utility model relates to the photovoltaic field, particularly a kind of solar battery sheet ion implantor level shifting circuit.

Background technology

In the solar battery sheet production process, diffusion technology is one of very important technology, consider unpredictability and the uncontrollability of PN junction diffusion in the diffusion technology of former diffusion furnace, and the accuracy of the ion implantation dosage of solar battery sheet ion implantor, therefore use ion implantor to carry out the PN junction diffusion and can improve the solar energy transfer ratio, and can reduce processing steps such as etching, production efficiency is provided.

The solar battery sheet ion implantor is that the battery sheet " is glued " on the target platform by electrostatic attraction, along with the target platform moves up and down together, the ion beam level is injected in the battery sheet uniformly, when injection length inner width line even when constant, the accuracy of implantation dosage is relevant with the time that the target platform moves up and down, therefore must accurately control the target platform motor that moves up and down, the accuracy of motor movement is relevant with coding, the driver control plate that we select can be exported one and set coding and actual coding pulse value relatively, it is position comparison value (Position compare) pulse, this pulse value is 5VTTL level mode, yet be 24V source electrode digital input module digital tablet NI9426(DI plate), position comparison value (Position compare) pulse of Electric Machine Control plate output can not directly output to digital tablet NI9426(DI plate like this) on, need the interface board of a level conversion to come compatible these two kinds of level logics.

Summary of the invention

Technical problem to be solved in the utility model is, at the prior art deficiency, provides a kind of solar battery sheet ion implantor level shifting circuit, solves the problem that the Electric Machine Control plate can not direct and digital tablet carries out communication.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of solar battery sheet ion implantor level shifting circuit, comprise signal Connection Block and high speed photo coupling, first interface of described signal Connection Block, the 3rd interface insert first input end, the 3rd input of described high speed photo coupling respectively; Second interface of described signal Connection Block, the 4th interface are connected with second input, the four-input terminal of described high speed photo coupling respectively; The 5th interface of described signal Connection Block is connected with first output of described high speed photo coupling, the 4th output; The 6th interface of described signal Connection Block, the 7th interface are connected with second output, the 3rd output of described high speed photo coupling respectively; The 8th interface of described signal Connection Block is connected with first output of described high speed photo coupling, the 4th output; First output of described high speed photo coupling is connected with the 4th output of described high speed photo coupling by a filter capacitor.

As preferred version, between described signal Connection Block first interface and the described high speed photo coupling first input end, between described signal Connection Block the 3rd interface and described high speed photo coupling the 3rd input, between first output and the 4th output of described signal Connection Block the 5th interface and described high speed photo coupling, between second output of described signal Connection Block the 6th interface and described high speed photo coupling, respectively be connected to a current-limiting resistance between the 3rd output of the 7th interface of described signal Connection Block and described high speed photo coupling.

Compared with prior art, the beneficial effect that the utility model has is: high speed photo coupling of the present utility model can carry out communication by electrical-optical-electricity conversion back and the digital tablet of 24V source electrode with the Transistor-Transistor Logic level signal of Electric Machine Control plate output, has solved the problem that the Electric Machine Control plate can not direct and digital tablet carries out communication.

Description of drawings

Fig. 1 is the utility model one embodiment circuit theory diagrams;

Fig. 2 uses schematic diagram for the utility model one embodiment.

Embodiment

As shown in Figure 1, the utility model one embodiment comprises signal Connection Block J1 and high speed photo coupling HCPL2531, and first interface of described signal Connection Block J1, the 3rd interface respectively insert first input end, the 3rd input of described high speed photo coupling respectively by current-limiting resistance R1, a R2; Second interface of described signal Connection Block J1, the 4th interface are connected with second input, the four-input terminal of described high speed photo coupling respectively; The 5th interface of described signal Connection Block is connected with first output, the 4th output of described high speed photo coupling by a current-limiting resistance R5; The 6th interface of described signal Connection Block J1, the 7th interface respectively are connected with second output, the 3rd output of described high speed photo coupling respectively by current-limiting resistance R3, a R4; The 8th interface of described signal Connection Block J1 is connected with first output of described high speed photo coupling, the 4th output; First output of described high speed photo coupling is connected with the 4th output of described high speed photo coupling by a filter capacitor C1.

HCPL2531 is the dual channel high speed optocoupler, transmission delay is the nS level between its output and the input, owing to transmit by light signal between the input of optocoupler and the output, thereby on electric, isolate fully between two parts, there are not feedback and the interference of the signal of telecommunication, so stable performance, antijamming capability is strong, the luminous tube of optocoupler and the coupling capacitance between the photosensitive tube little (about 2pF) in addition, withstand voltage height (about 2.5kV) is so common-mode rejection ratio is very high.

Among Fig. 1, the input I of high speed photo coupling HCPL2531 ₀+ be low level, when having drive current to flow through in the light-emitting diode, the photodiode of output will be subjected to photoconduction logical, and the base stage of NPN triode will produce drive current, triode conducting, so the collector electrode O of triode ₀Be converted into low level by high level, the size of base terminal drive current is relevant with the luminous intensity of Light-Emitting Diode, and the output signal of optocoupler is the nS level with respect to input delay, and the output delay of HCPL2531 is 500nS, belong to high speed photo coupling, satisfy the needs of high-speed transfer.

Among Fig. 2, the position comparison signal POSITION COMPARE of Electric Machine Control plate NI9514 is for exporting pulse at a high speed, in ion implantation process, when the traveled distance of scan module and mobile faraday's motor when stroke being set reaching consistent, Transistor-Transistor Logic level pulse that minimum is 100nS of output pin POSITION COMPARE output of Electric Machine Control plate NI9514, the input light-emitting diode conducting of high speed photo coupling HCPL2531 like this, lumination of light emitting diode, photodiode is subjected to the logical drive current that produces of photoconduction, goes to drive the triode conducting.

In digital tablet NI9426, input signal DI1 is connected on the collector electrode of the output triode of high speed photo coupling HCPL2531, when triode drives conducting, the level of collector electrode becomes low level by high level, high speed photo coupling HCPL2531 conducting, its output triode conducting, reach the purpose of signal controlling by the change of triode level, after the host computer of solar battery sheet ion implantor and uniformity controller collect the signal of this change, just can judge whether scan module and mobile faraday's motor put in place.

Five current-limiting resistance R1-R5 are connected on input and the output of high speed photo coupling respectively, when Electric Machine Control plate NI9514 and digital tablet NI9426(DI plate) can play a protective role during short circuit.

High speed photo coupling HCPL2531 has two electrical-opticals-electric isolated loop, and the input circuit in each loop can connect the Transistor-Transistor Logic level signal, and after isolating by photoelectricity, output can connect the loop of 24V.

To the input and output loop, be not limited only to connect Transistor-Transistor Logic level and 24V level circuit, (preferably≤24VDC) signal transmission and isolation also can be carried out in the loop for other level.

Claims

1. a solar battery sheet ion implantor level shifting circuit comprises signal Connection Block and high speed photo coupling, it is characterized in that, first interface of described signal Connection Block, the 3rd interface insert first input end, the 3rd input of described high speed photo coupling respectively; Second interface of described signal Connection Block, the 4th interface are connected with second input, the four-input terminal of described high speed photo coupling respectively; The 5th interface of described signal Connection Block is connected with first output of described high speed photo coupling, the 4th output; The 6th interface of described signal Connection Block, the 7th interface are connected with second output, the 3rd output of described high speed photo coupling respectively; The 8th interface of described signal Connection Block is connected with first output of described high speed photo coupling, the 4th output; First output of described high speed photo coupling is connected with the 4th output of described high speed photo coupling by a filter capacitor.

2. solar battery sheet ion implantor level shifting circuit according to claim 1 is characterized in that, described high speed photo coupling model is HCPL2531.

3. solar battery sheet ion implantor level shifting circuit according to claim 1, it is characterized in that, between described signal Connection Block first interface and the described high speed photo coupling first input end, between described signal Connection Block the 3rd interface and described high speed photo coupling the 3rd input, between first output and the 4th output of described signal Connection Block the 5th interface and described high speed photo coupling, between second output of described signal Connection Block the 6th interface and described high speed photo coupling, respectively be connected to a current-limiting resistance between the 7th interface of described signal Connection Block and the 3rd output of described high speed photo coupling.