CN207869104U - A kind of alternating-current charging pile pwm signal R-T unit - Google Patents
A kind of alternating-current charging pile pwm signal R-T unit Download PDFInfo
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- CN207869104U CN207869104U CN201820353793.9U CN201820353793U CN207869104U CN 207869104 U CN207869104 U CN 207869104U CN 201820353793 U CN201820353793 U CN 201820353793U CN 207869104 U CN207869104 U CN 207869104U
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Abstract
The utility model provides a kind of alternating-current charging pile pwm signal R-T unit, including pwm signal transmitting-receiving control unit, voltage magnitude adjustment unit, signal conversion unit；The pwm signal transmitting-receiving control unit includes the first input/output terminal, the second input/output terminal, also includes several control output ends；The signal conversion unit includes the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, hysteresis loop comparator, latch and logic circuit, and not circuit, ground resistance R2 and ground resistance R3；The voltage magnitude adjustment unit includes switching switch S1, current-limiting resistance R1, NPN triode, base resistance R4, collector resistance R5, third metal-oxide-semiconductor and the mutually different zener diode D1 of voltage stabilizing parameter, zener diode D2；The beneficial effects of the utility model are：The pwm signal of different voltages amplitude can be sent while be included, the pwm signal of different voltages amplitude can be also received and differentiate while including, increases the transmission capacity of pwm signal.
Description
Technical field
The utility model is related to Vehicular charging technical fields, and in particular to a kind of alternating-current charging pile pwm signal R-T unit.
Background technology
According to national standard, the interface of alternating-current charging pile only has CP lines in Vehicular charging line and PE lines for communicating；It is existing
There is alternating-current charging pile more single in the communication device function of sending out pwm signal, pwm signal can only be sent, and send the letter of PWM
Number capacity is smaller, while the signal of existing charging confirms and mostly realized by way of " switch, contact ", and PWM transmitting terminals are usually not
Have the function of receiving signal, can not identify in the data string signal of transmission, while including such as 12V, 9V, 6V multiple
The signal of voltage magnitude；Data communication capacity is promoted, more data, such as the battery charge situation of transmission electric vehicle are transmitted,
There is also rooms for improvement for existing alternating-current charging pile structure design, it is necessary to be furtherd investigate.
Utility model content
For the deficiency in the presence of the prior art, the utility model provides a kind of alternating-current charging pile pwm signal transmitting-receiving
Device its object is to facilitate the pwm signal for generating different voltages amplitude, and is realized to including different voltages amplitude signal
The processing of pwm signal, to realize the capacity for promoting data communication.
To achieve the above object, the utility model uses the following technical solution：
A kind of alternating-current charging pile pwm signal R-T unit, including the adjustment of pwm signal transmitting-receiving control unit, voltage magnitude is single
Member, signal conversion unit；The pwm signal transmitting-receiving control unit includes the first input/output terminal, the second input/output terminal, is also wrapped
Containing several control output ends；
The signal conversion unit include the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, hysteresis loop comparator, latch, with logic circuit,
And not circuit, ground resistance R2 and ground resistance R3；
The voltage magnitude adjustment unit includes switching switch S1, current-limiting resistance R1, NPN triode, base resistance R4, collection
Electrode resistance R5, third metal-oxide-semiconductor and the mutually different zener diode D1 of voltage stabilizing parameter, zener diode D2；
The base stage of the NPN triode controls defeated through one of base resistance R4 and pwm signal transmitting-receiving control unit
Outlet is individually connected；The emitter of NPN triode is connected with the DC reference ground terminal of alternating-current charging pile pwm signal R-T unit,
The collector of NPN triode is connected through collector resistance R5 with the DC power supply terminal of pwm signal transmitting-receiving control unit, and NPN tri-
The collector of pole pipe is connected with the grid of third metal-oxide-semiconductor；The cathode of the zener diode D1, the cathode of zener diode D2,
The source electrode of third metal-oxide-semiconductor, the drain electrode of the second metal-oxide-semiconductor, the drain electrode of the first metal-oxide-semiconductor, the input terminal of hysteresis loop comparator are connected with each other；Surely
The anode of the anode, zener diode D2 of pressing diode D1 is corresponding with the switching end of switching switch respectively to be connected, and switching is opened
The switch common end of pass is connected with the drain electrode of third metal-oxide-semiconductor, and is connected to the transmitting-receiving of alternating-current charging pile pwm signal through current-limiting resistance R1
The DC reference ground terminal of device；
The source electrode of first metal-oxide-semiconductor, the second metal-oxide-semiconductor source electrode respectively with the first input/output terminal, the second input/output terminal one
One correspondence is connected；The grid of first metal-oxide-semiconductor is connected to the output end of and not circuit；The grid of second metal-oxide-semiconductor be connected to
The output end of logic circuit；It is connected to hysteresis after one of and not circuit and logic circuit input terminal are connected with each other
The output end of comparator；It is independently connected after the latched device in two of which control output end of pwm signal transmitting-receiving control unit
Input terminal to and not circuit, with logic circuit；It is first input/output terminal of pwm signal transmitting-receiving control unit, second defeated
Enter output end and distinguish grounded resistance R3, ground resistance R2 is connected to the DC reference of alternating-current charging pile pwm signal R-T unit
Ground terminal.
The utility model sends signal when sending PWM waveform, by pwm signal transmitting-receiving control unit, after latched device,
Determine only the first metal-oxide-semiconductor of selection or the conducting of the second metal-oxide-semiconductor, when third metal-oxide-semiconductor is connected, zener diode D1, zener diode
D2 and switching switch are short-circuited, and the signal amplitude voltage that pwm signal transmitting-receiving control unit is sent out is constant；When third metal-oxide-semiconductor is obstructed,
Then signal amplitude can be restricted to correspond to accordingly after switching switch S1 selection connections zener diode D1 or zener diode D2
Voltage；The antilogical of NPN triode is controlled by pwm signal transmitting-receiving control unit, realizes the fast quick-action of third metal-oxide-semiconductor
Make, you can the appearance of pwm signal can be promoted comprising different voltages amplitude pwm signal using this characteristic simultaneously by sending out
The pwm signal of two or three of amplitude, i.e., be simultaneously emitted by by amount；
When preparing reception while comprising the pwm signal of two kinds of amplitudes, pwm signal transmitting-receiving control unit sends out letter in advance
Number so that it is 1 that latch, which is output to the input of logic circuit, and not circuit, and the component parameters of hysteresis loop comparator are set
Meter makes the high side voltage of its turnover voltage be more than the smaller voltage of amplitude in pwm signal, thus only maximum amplitude in the signal
The output switching activity of hysteresis loop comparator or variation when voltage arrives.When PWM count is according to transmission, the voltage of highest amplitude signal comes interim,
Hysteresis loop comparator exports high level, then by with after logic circuit, and not circuit, the second metal-oxide-semiconductor is connected, the first metal-oxide-semiconductor
It disconnects, the second input/output terminal of pwm signal transmitting-receiving control unit receives the high level of pwm signal；When PWM count is according to transmission
The voltage of weak amplitude signal comes temporarily, and due to the turnover voltage less than hysteresis loop comparator, hysteresis loop comparator exports low-voltage, passes through
After logic circuit, and not circuit, the second metal-oxide-semiconductor disconnects, the conducting of the first metal-oxide-semiconductor；At this point, pwm signal transmitting-receiving control is single
Second input/output terminal of member is low level due to resistance grounded, and the first input/output terminal can then be normally received and be identified
The pwm signal of weak amplitude.
Compared with the prior art, the utility model has the advantages that：
(1) the pwm signal of different voltages amplitude, can be sent while be included, can also receive and differentiates while including different electricity
The pwm signal of pressure amplitude value increases the transmission capacity of pwm signal；
(2), by the control of pwm signal transmitting-receiving control unit and latch, it can realize the selection of data path and cut
It changes, flexibility higher, also increases the redundancy of data transmission path, use reliability and replaceability are all strengthened；
(3), kept for the while of communicating have protective effect, traditional protective circuit of diode cannot achieve two-way communication.
Description of the drawings
Fig. 1 is the schematic diagram of embodiment.
Specific implementation mode
The technical solution in the utility model is further illustrated with reference to the accompanying drawings and embodiments.
A kind of alternating-current charging pile pwm signal R-T unit, as shown in Figure 1, including pwm signal transmitting-receiving control unit, voltage
Range-adjusting unit, signal conversion unit；The pwm signal transmitting-receiving control unit includes the first input/output terminal t1, second defeated
Enter output end t2, also includes control output end t3-t5；The pwm signal transmitting-receiving control unit include ARM embeded processors,
One of which in FPGA；One side pin is more, extends and realizes convenient for scheme, on the other hand, the crystal oscillator frequency being correspondingly connected with
Height is conducive to the data capacity for promoting transmission；
The signal conversion unit include the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, hysteresis loop comparator A1, latch La1, with
Logic circuit U2, and not circuit U3, ground resistance R2 and ground resistance R3；
The voltage magnitude adjustment unit include switching switch S1, current-limiting resistance R1, NPN triode Q4, base resistance R4,
Collector resistance R5, third metal-oxide-semiconductor Q3 and the mutually different zener diode D1 of voltage stabilizing parameter, zener diode D2；
Control output end t5 of the base stage of the NPN triode Q4 through base resistance R4 Yu pwm signal transmitting-receiving control unit
Individually it is connected；The emitter of NPN triode Q4 is connected with the DC reference ground terminal of alternating-current charging pile pwm signal R-T unit, NPN
The collector of triode Q4 is connected through collector resistance R5 with the DC power supply terminal of pwm signal transmitting-receiving control unit, and tri- poles NPN
The collector of pipe Q4 is connected with the grid of third metal-oxide-semiconductor Q3；The cathode of the zener diode D1, the moon of zener diode D2
Pole, the source electrode of third metal-oxide-semiconductor Q3, the drain electrode of the second metal-oxide-semiconductor Q2, the drain electrode of the first metal-oxide-semiconductor Q1, hysteresis loop comparator A1 input terminal
It is connected with each other；The anode of zener diode D1, the anode of zener diode D2 respectively with switching switch S1 switching end pair
It should be connected, the switch common end of switching switch S1 is connected with the drain electrode of third metal-oxide-semiconductor Q3, and is connected to exchange through current-limiting resistance R1
The DC reference ground terminal of charging pile pwm signal R-T unit；The switching switch S1 comprising analog switch, relay wherein one
Kind, in order to control, control terminal can also be connected with the control output end of pwm signal transmitting-receiving control unit.
The source electrode of first metal-oxide-semiconductor Q1, the source electrode Q2 of the second metal-oxide-semiconductor are defeated with the first input/output terminal t1, the second input respectively
Outlet t2, which is corresponded, to be connected；The grid of first metal-oxide-semiconductor Q1 is connected to the output end of and not circuit U2；Second metal-oxide-semiconductor
Grid is connected to the output end with logic circuit；It is and not circuit U2, mutual with one of logic circuit U3 input terminal
And the output end of hysteresis loop comparator A1 is connected to after connecing；Two of which control output end t3, t4 of pwm signal transmitting-receiving control unit
And not circuit U2, the input terminal with logic circuit U3 are independently connected to after latched device La1；Pwm signal transmitting-receiving control
First input/output terminal t1 of unit processed, the second input/output terminal t2 distinguish grounded resistance R3, ground resistance R2 connection best friends
The DC reference ground terminal of current charge stake pwm signal R-T unit.
Above-mentioned alternating-current charging pile pwm signal R-T unit also sends driving unit comprising signal, signal receives pressure regulation unit,
Driving power, the first transmitting-receiving control switch, the second transmitting-receiving control switch；Wherein, it includes amplification factor that signal, which sends driving unit,
Linear amplifier more than 1, can be used in-phase amplifier and emitter follower, and the input terminal of in-phase amplifier is sent as signal
The input terminal of driving unit, the output end of in-phase amplifier are connected with the input terminal of emitter follower, the output of emitter follower
Hold the output end that driving unit is sent as signal；In-phase amplifier, emitter follower feeder ear by first transmitting-receiving control
Switch is connected with driving power；It includes the linear amplification unit that amplification factor is less than 1 that signal, which receives pressure regulation unit, and reverse phase can be used
Amplifier, the input terminal of inverting amplifier receive the input terminal of pressure regulation unit as signal, and the output of inverting amplifier is as letter
Number receive pressure regulation unit output end；The feeder ear of inverting amplifier is connected by the second transmitting-receiving control switch with driving power；
It is that inverted logic is closed on the whole that signal, which sends the signal that driving unit is sent out and receives the signal that pressure regulation unit receives with signal, as a result,
The signal identification and correction process of control unit are convenient in system；It is selected by the parameter designing of amplification factor and the size of driving power
It selects, the voltage logic of data communication can be easily provided in wider range, the driving capability of data communication is also increased；Letter
The feeder ear for number sending driving unit is connected through the first transmitting-receiving control switch with driving power, the power supply of signal reception pressure regulation unit
End is connected through the second transmitting-receiving control switch with driving power；Signal sends the input of driving unit, signal receives pressure regulation unit
Output is mutual and is connected to the input terminal of hysteresis loop comparator；Signal sends the output of driving unit, signal receives the defeated of pressure regulation unit
Enter the CP lines in the line connected with each other to Vehicular charging；The control terminal difference of first transmitting-receiving control switch, the second transmitting-receiving control switch
It is correspondingly connected with the input terminal for being connected to latch with logic circuit, and not circuit；Pass through pwm signal transmitting-receiving control unit
Output, may make the first transmitting-receiving control switch, second transmitting-receiving control switch simultaneously only one of which switch conduction, to keep away
Exempt to tie up communication line when pwm signal transmission is received with pwm signal；On the other hand, pass through the first transmitting-receiving control switch, the
The switch conduction control of two transmitting-receiving control switches so that any time only has signal transmission driving unit or signal to receive pressure regulation list
Member can work normally, and to kept for the while of communicating have protective effect, and traditional protective circuit of diode then can not
Realize two-way communication.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the right of the utility model.
Claims (4)
1. a kind of alternating-current charging pile pwm signal R-T unit, it is characterised in that：Including pwm signal transmitting-receiving control unit, voltage amplitude
It is worth adjustment unit, signal conversion unit；The pwm signal transmitting-receiving control unit is defeated comprising the first input/output terminal, the second input
Outlet also includes several control output ends；
The signal conversion unit include the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, hysteresis loop comparator, latch, with logic circuit, with it is non-
Logic circuit, ground resistance R2 and ground resistance R3；
The voltage magnitude adjustment unit includes switching switch S1, current-limiting resistance R1, NPN triode, base resistance R4, collector
Resistance R5, third metal-oxide-semiconductor and the mutually different zener diode D1 of voltage stabilizing parameter, zener diode D2；
The base stage of the NPN triode is through the control output end one of base resistance R4 and pwm signal transmitting-receiving control unit
Individually it is connected；The emitter of NPN triode is connected with the DC reference ground terminal of alternating-current charging pile pwm signal R-T unit, NPN tri-
The collector of pole pipe is connected through collector resistance R5 with the DC power supply terminal of pwm signal transmitting-receiving control unit, and NPN triode
Collector is connected with the grid of third metal-oxide-semiconductor；The cathode of the zener diode D1, the cathode of zener diode D2, the 3rd MOS
The source electrode of pipe, the drain electrode of the second metal-oxide-semiconductor, the drain electrode of the first metal-oxide-semiconductor, the input terminal of hysteresis loop comparator are connected with each other；Two pole of voltage stabilizing
The anode of pipe D1, the anode of zener diode D2 are corresponding with the switching end of switching switch respectively to be connected, and switches opening for switch
It closes common end with the drain electrode of third metal-oxide-semiconductor to be connected, and alternating-current charging pile pwm signal R-T unit is connected to through current-limiting resistance R1
DC reference ground terminal；
The source electrode of first metal-oxide-semiconductor, the source electrode of the second metal-oxide-semiconductor are a pair of with the first input/output terminal, the second input/output terminal one respectively
It should be connected；The grid of first metal-oxide-semiconductor is connected to the output end of and not circuit；The grid of second metal-oxide-semiconductor is connected to and logic
The output end of circuit；And not circuit, it is connected with each other with one of logic circuit input terminal after be connected to hysteresis compared with
The output end of device；Independently be connected to after the latched device in two of which control output end of pwm signal transmitting-receiving control unit with
Logical not component, the input terminal with logic circuit；First input/output terminal of pwm signal transmitting-receiving control unit, the second input are defeated
Outlet distinguishes grounded resistance R3, and ground resistance R2 is connected to the DC reference ground terminal of alternating-current charging pile pwm signal R-T unit.
2. a kind of alternating-current charging pile pwm signal R-T unit as described in claim 1, it is characterised in that：The switching switch
Include the one of which of analog switch, relay.
3. a kind of alternating-current charging pile pwm signal R-T unit as described in claim 1, it is characterised in that：The pwm signal is received
It includes the one of which in ARM embeded processors, FPGA to send out control unit.
4. a kind of alternating-current charging pile pwm signal R-T unit as described in claim 1, it is characterised in that：Also include that signal is sent out
Driving unit, signal is sent to receive pressure regulation unit, driving power, the first transmitting-receiving control switch, the second transmitting-receiving control switch；Wherein,
It includes the linear amplifier that amplification factor is more than 1 that signal, which sends driving unit, and it includes that amplification factor is small that signal, which receives pressure regulation unit,
In 1 linear amplification unit, the feeder ear that signal sends driving unit is connected through the first transmitting-receiving control switch with driving power, believes
The feeder ear for number receiving pressure regulation unit is connected through the second transmitting-receiving control switch with driving power；Signal sends the defeated of driving unit
Enter, signal receives the output of pressure regulation unit mutually and is connected to the input terminal of hysteresis loop comparator；The output of signal transmission driving unit,
The CP lines that signal receives the input of pressure regulation unit mutually and is connected in Vehicular charging line；First transmitting-receiving control switch, the second transmitting-receiving
The control terminal of control switch is correspondingly connected to the output end of latch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353793.9U CN207869104U (en) | 2018-03-15 | 2018-03-15 | A kind of alternating-current charging pile pwm signal R-T unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353793.9U CN207869104U (en) | 2018-03-15 | 2018-03-15 | A kind of alternating-current charging pile pwm signal R-T unit |
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| Publication Number | Publication Date |
|---|---|
| CN207869104U true CN207869104U (en) | 2018-09-14 |
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| CN201820353793.9U Active CN207869104U (en) | 2018-03-15 | 2018-03-15 | A kind of alternating-current charging pile pwm signal R-T unit |
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