CN207067288U - A kind of charging pile test device - Google Patents
A kind of charging pile test device Download PDFInfo
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- CN207067288U CN207067288U CN201721026018.4U CN201721026018U CN207067288U CN 207067288 U CN207067288 U CN 207067288U CN 201721026018 U CN201721026018 U CN 201721026018U CN 207067288 U CN207067288 U CN 207067288U
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Abstract
Embodiment of the present utility model discloses a kind of charging pile test device, and the device includes CP circuitry for signal measurement and CC resistance measuring circuits；Wherein, during testing charging pile to be tested, the CP circuitry for signal measurement is connected with the CP control leads of the charging pile to be tested, peak value, valley, frequency and the dutycycle of the CP signals for measuring the charging pile to be tested；During testing charging pile to be tested, the CC resistance measuring circuits are connected with the CC control leads of the charging pile to be tested, for measuring the CC resistance values of the charging pile to be tested.The device is measured by both circuit realirations tested to the electric parameter of charging pile to be tested, so as to carry out more test comprehensively to charging pile to be tested, avoid due to charging pile is tested it is not in place caused by existing charging safety problem.
Description
Technical field
Electric vehicle charging technical field is the utility model is related to, more particularly, to a kind of charging pile test device.
Background technology
With the quick popularization and popularization of charging pile, charging pile needs to carry out Function detection after production or installation, due to
It is cumbersome using automobile real steering vectors, and then need specific test device to be tested.Usual test device is filled by exchanging
Electrical socket, voltmeter, S2 switch analogue means compositions.Attachment means of the AC charging socket as charging pile, voltmeter are carried out
Voltage measurement, S2 switches carry out charge mode simulation.Existing test device can only be tested charge function, can not be to control
The detailed electrical parameter of guidance circuit processed measures.
During the utility model embodiment is realized, inventor has found that existing test device can only be to charge function
Tested, the detailed electrical parameter for controlling guidance circuit can not be measured.
Utility model content
Technical problem to be solved in the utility model is that how to solve existing test device to enter charge function
Row test, can not be to the problem of controlling the detailed electrical parameter of guidance circuit to measure.
For above technical problem, embodiment of the present utility model provides a kind of charging pile test device, including CP letters
Number measuring circuit and CC resistance measuring circuits；
Wherein, during testing charging pile to be tested, the CP circuitry for signal measurement with it is described to be tested
The CP control lead connections of charging pile, peak value, valley, frequency and the duty of the CP signals for measuring the charging pile to be tested
Than；
During testing charging pile to be tested, the CC resistance measuring circuits and the charging pile to be tested
CC control lead connection, for measuring the CC resistance values of the charging pile to be tested.
Alternatively, in addition to display module；
The display module connects the CC resistance measuring circuits and the CP circuitry for signal measurement, for showing the CC
The CC resistance values of resistance measuring circuit measurement, and the frequency of the CP signals of the display CP circuitry for signal measurement measurement
Rate, dutycycle, valley and peak value.
Alternatively, the CP circuitry for signal measurement include be used for measure the CP signals peak value the first measuring circuit,
For measuring the frequency of the CP signals and the second measuring circuit of dutycycle, and for measuring the valley of the CP signals
Three measuring circuits；
Wherein, first measuring circuit includes the first diode, the second diode, the first electric capacity, first resistor, second
Resistance and analog-to-digital conversion module；
Input of the first end of first diode as first measuring circuit, the of first diode
Two ends connect the first end of first electric capacity, the second end connection common port of first electric capacity；
The first end of the first resistor connects the first end of first electric capacity, the second end connection of the first resistor
The first end of the second resistance, the second end connection common port of the second resistance；
The first end of the second resistance connects the input of the analog-to-digital conversion module, the analog-to-digital conversion module it is defeated
Go out end and connect the display module；
Second diode is as clamp diode, the first end connection high level of second diode, the second end
Connect the analog-to-digital conversion module；
During testing the charging pile to be tested, the CP signals pass through the first diode pair institute
The charging of the first electric capacity is stated, first electric capacity is discharged by the first resistor and the second resistance and transmitted to the modulus
Modular converter, the analog-to-digital conversion module is by the digital data transmission related to the peak value of the CP signals to the display module
Shown.
Alternatively, second measuring circuit includes the 3rd diode, 3rd resistor, the 4th resistance, the 4th diode, the
Five resistance and single-chip microcomputer；
Input of the first end of 3rd diode as second measuring circuit, the of the 3rd diode
Two ends connect the first end of the 3rd resistor, the second end connection common port of the 3rd resistor；
The first end of the 3rd resistor connects the first end of the 4th diode, and the first of the 4th diode
End connects the first end of the 4th resistance, the second end connection charging control switch of the 4th resistance；
Second end of the 4th diode connects the first end of the 5th resistance and the impulse sampling of the single-chip microcomputer
Passage, the second end connection high level of the 5th resistance；The first output end corresponding with the impulse sampling passage connects institute
State display module；
During testing the charging pile to be tested, the single-chip microcomputer determines to pass by timed capture function
Transport to the frequency and dutycycle of the signal of the impulse sampling passage, and the frequency and described is shown by the display module
Dutycycle.
Alternatively, the 3rd measuring circuit includes the 5th diode, the second electric capacity, add circuit and the single-chip microcomputer；
Input of the first end of 5th diode as the 3rd measuring circuit, the of the 5th diode
Two ends connect the first end of second electric capacity, the second end connection common port of second electric capacity；
The first end of second electric capacity connects the first end of the add circuit, the second end connection of the add circuit
First ADC sampling channels of the single-chip microcomputer, the second output end connection corresponding with the first ADC sampling channels are described aobvious
Show module；
During testing the charging pile to be tested, the single-chip microcomputer will be transmitted to the first ADC and adopt
The analog signal of sample passage is converted into data signal, and the valley of the CP signals is calculated according to the add circuit, and passes through institute
State the valley that display module shows the CP signals.
Alternatively, the add circuit follows amplification including the 6th resistance, the 7th resistance, the first follow-up amplifier and second
Device；
The first end of second electric capacity connects the first end of the 6th resistance, the second end connection of the 6th resistance
The first end of 7th resistance and the input of first follow-up amplifier, the output end of first follow-up amplifier connect
Connect the first ADC sampling channels of the single-chip microcomputer；
The input connection reference voltage of second follow-up amplifier, the output end connection of second follow-up amplifier
7th resistance, second end.
Alternatively, the CC resistance measuring circuits include the 8th resistance, the 3rd follow-up amplifier, the 4th follow-up amplifier and
The single-chip microcomputer；
During testing the charging pile to be tested, the first end of the 8th resistance connects the CC controls
The input of lead processed and the 3rd follow-up amplifier；
The input connection reference voltage of 4th follow-up amplifier, the output end connection of the 4th follow-up amplifier
Second end of the 8th resistance；
The output end of 3rd follow-up amplifier connects the 2nd ADC sampling channels of the single-chip microcomputer, with described second
3rd output end corresponding to ADC sampling channels connects the display module；
During testing the charging pile to be tested, the single-chip microcomputer will be transmitted to the 2nd ADC and adopt
The analog signal of sample passage is converted into data signal, according to the resistance value of CC resistance described in the 8th resistance calculations, and passes through
The display module shows the resistance value of the CC resistance.
Alternatively, in addition to be arranged on the 3rd follow-up amplifier output end and the 2nd ADC sampling channels it
Between the 9th resistance and the 3rd electric capacity；
The first end of output end connection the 9th resistance of 3rd follow-up amplifier, the second of the 9th resistance
End connects the first end of the 2nd ADC sampling channels and the 3rd electric capacity, and the second end connection of the 3rd electric capacity is public
End；
The simulation of 9th resistance and the 3rd electric capacity to the output end output from the 3rd follow-up amplifier is believed
Number it is filtered processing, and by the analog signal transmission after filtering process to the 2nd ADC sampling channels.
Alternatively, in addition to voltmeter；
During testing charging pile to be tested, the voltmeter shows the voltage to charging pile output
The magnitude of voltage measured.
Alternatively, in addition to load extends mouth.
Embodiment of the present utility model provides a kind of charging pile test device, and the device is included to charging pile to be tested
The circuit that peak value, valley, frequency and the dutycycle of CP signals are tested, and the CC resistance of charging pile to be tested is surveyed
The circuit of amount.The electric parameter of charging pile to be tested is measured by the circuit realirations of both tests, so as to right
Charging pile to be tested carries out more test comprehensively, avoid due to charging pile is tested it is not in place caused by existing charging peace
Full problem.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the charging pile test device that the utility model one embodiment provides；
Fig. 2 is the outline structural diagram of the charging pile test device of the utility model another embodiment offer；
Fig. 3 is the circuit diagram of the CP circuitry for signal measurement of the utility model another embodiment offer；
Fig. 4 is the circuit diagram of the CC resistance measuring circuits of the utility model another embodiment offer.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Fig. 1 is the structural representation for the charging pile test device that the present embodiment provides.Referring to Fig. 1, the device includes：
CP circuitry for signal measurement 101 and CC resistance measuring circuits 102；
Wherein, during testing charging pile to be tested, the CP circuitry for signal measurement 101 with it is described to be measured
The CP control leads connection of trial charging stake is (as shown in figure 1, pass through the AC charging socket 107 of charging pile to be tested and to be tested
The CP control leads connection of charging pile), the peak values of the CP signals for measuring the charging pile to be tested, valley, frequency and account for
Empty ratio；
During testing charging pile to be tested, the CC resistance measuring circuits 102 to be tested fill with described
The CC control leads of electric stake are connected (as shown in figure 1, AC charging socket 107 and trial charging to be measured by charging pile to be tested
The CC control leads connection of stake), for measuring the CC resistance values of the charging pile to be tested.
It should be noted that the charging pile test device that the present embodiment provides is used to test the charging pile of vehicle.
The voltage swing that traditional device tested charging pile can only export to charging pile is tested, and test event is single,
The exception of charging pile can not be found in time, evade some security risks.The charging pile test device of the offer of the present embodiment is passing
On the basis of the charging pile test device of system, the circuit measured to the CC resistance and CP signals of charging pile is additionally arranged, it is perfect
The test event tested charging pile, realize to carrying out more test comprehensively to charging pile to be tested, avoid by
In charging pile is tested it is not in place caused by existing charging safety problem.
It will be appreciated that as shown in figure 1, the charging pile test equipment that the present embodiment provides can only include above-mentioned CP and believe
Number measuring circuit 101 and CC resistance measuring circuits 102, power supply circuit 103, A.C. voltmeter 105, charge control can also be included
Switch 104, load expansion interface 106.As shown in figure 1, during testing charging pile to be tested, AC charging is inserted
Seat 107 connects power supply circuit 103 (zero line L, live wire N and ground wire PE are connected respectively), and A.C. voltmeter 105 is to zero line L and live wire N
Between voltage measure, i.e., to charging pile output voltage measure.Charging control switch 104 is used to control charging pile
Connecting and disconnecting of the circuit between charging pile test device.Load expansion interface 106 is used to connect other loads.
A kind of charging pile test device is present embodiments provided, the device includes the peak to the CP signals of charging pile to be tested
The circuit that value, valley, frequency and dutycycle are tested, and the circuit measured to the CC resistance of charging pile to be tested.
The electric parameter of charging pile to be tested is measured by the circuit realirations of both tests, so as to to charging to be tested
Stake carry out more comprehensively test, avoid due to charging pile is tested it is not in place caused by existing charging safety problem.
Further, on the basis of above-described embodiment, Fig. 2 shows the charging pile test device that the present embodiment provides
Outline structural diagram, referring to Fig. 2, the charging pile test device also includes display module 201；
The display module 201 connects the CC resistance measuring circuits 102 and the CP circuitry for signal measurement 101, is used for
Show that the CC resistance values that the CC resistance measuring circuits 102 measure, and the display measuring circuit of CP signals 101 are surveyed
Frequency, dutycycle, valley and the peak value of the CP signals of amount.
Load expansion interface 106 is specifically located at the side of charging pile test device, as shown in 203 in Fig. 2, charging control
System switch 104 is specifically located at the front of charging pile test device, as shown in 204 in Fig. 2.Need, display dress
It can be display screen to put, for example, LED display, the present embodiment is not specifically limited to this.
The charging pile test device that the present embodiment provides, in addition to display module, display module show CC resistance measurements electricity
Road and the electric parameter of CP circuitry for signal measurement measurement, tester can be appreciated that the electricity of charging pile to be tested by display module
Gas parameter, so as to judge the performance of charging pile, pinpoint the problems early.
Further, on the basis of above-mentioned each embodiment, Fig. 3 shows the circuit diagram of CP circuitry for signal measurement,
Referring to Fig. 3, the CP circuitry for signal measurement includes being used to measure the first measuring circuit 301 of the peak value of the CP signals, is used for
The frequency of the CP signals and the second measuring circuit 302 of dutycycle are measured, and for measuring the valley of the CP signals
Three measuring circuits 303；
Wherein, first measuring circuit 301 includes the first diode D1, the second diode D2, the first electric capacity C1, the
One resistance R1, second resistance R2 and analog-to-digital conversion module；
The first end of the first diode D1 as first measuring circuit input (as shown in figure 3, right
During charging pile to be tested is tested, the first diode D1 first end connection CP signals), first diode
D1 the second end connects the first end of the first electric capacity C1, the second end connection common port DGND of the first electric capacity C1；
First end connection the first electric capacity C1 of first resistor R1 first end, the second of the first resistor R1
End connects the first end of the second resistance R2, the second end connection common port DGND of the second resistance R2；
The first end of the second resistance R2 connects the input of the analog-to-digital conversion module, the analog-to-digital conversion module
Output end connects the display module；
The second diode D2 connects high level VCC as clamp diode, the first end of the second diode D2,
Second end connects the analog-to-digital conversion module；
During testing the charging pile to be tested, the CP signals pass through D1 pairs of first diode
The first electric capacity C1 chargings, the first electric capacity C1 are discharged and transmitted by the first resistor R1 and the second resistance R2
To the analog-to-digital conversion module, the analog-to-digital conversion module is by the digital data transmission related to the peak value of the CP signals to institute
Display module is stated to be shown.
Wherein, analog-to-digital conversion module can be the circuit, chip or list that can convert analog signals into data signal
The passage that can realize analog-to-digital conversion in piece machine, the present embodiment are not specifically limited to this.
During testing charging pile to be tested, the peak value of CP signals is electric to first by the first diode D1
Hold C1 to be charged, the first electric capacity C1 possesses voltage and keeps function.It is defeated that first resistor R1 and second resistance R2 forms bleeder circuit
Enter to analog-to-digital conversion module.Wherein, first resistor R1 and second resistance R2 discharges the first electric capacity C1, at the peak of CP signals
When value reduces, measurement response speed can be improved, the first diode D1 is clamp diode, protection input to analog-to-digital conversion module
Voltage be not higher than VCC.
The charging pile test device that the present embodiment provides, passes through the first diode D1, the second diode D2, the first electric capacity
The signal that C1, first resistor R1, second resistance R2 and analog-to-digital conversion module include CP signals peak value is converted to data signal
It has been shown that, so that tester determines by peak signal the peak value of CP signals.
Further, on the basis of above-mentioned each embodiment, as shown in figure 3, second measuring circuit 302 includes
3rd diode D3,3rd resistor R3, the 4th resistance R4, the 4th diode D4, the 5th resistance R5 and single-chip microcomputer；
Input of the first end of the 3rd diode D3 as second measuring circuit, the 3rd diode D3
The second end connect the first end of the 3rd resistor R3, the second end connection common port DGND of the 3rd resistor R3；
The first end of the 3rd resistor R3 connects the first end of the 4th diode D4, and the 4th diode D4
First end connect the first end of the 4th resistance R4, the second end connection charging control switch of the 4th resistance R4；
The second end of the 4th diode D4 connects the first end of the 5th resistance R5 and the pulse of the single-chip microcomputer
Sampling channel, the second end connection high level VCC of the 5th resistance R5；Corresponding with the impulse sampling passage first is defeated
Go out end and connect the display module；
During testing the charging pile to be tested, the single-chip microcomputer determines to pass by timed capture function
Transport to the frequency and dutycycle of the signal of the impulse sampling passage, and the frequency and described is shown by the display module
Dutycycle.
It should be noted that the diode D3 of the second measuring circuit 302 the 3rd, 3rd resistor R3, the 4th resistance R4, the four or two
Pole pipe D4, the 5th resistance R5 and single-chip microcomputer.Wherein, the 3rd diode D3,3rd resistor R3 and the 4th resistance R4 are GB/T
18487.1-2015 guidance circuit is controlled to fix composition specified in.4th diode D4 and the 5th resistance R5 forms pulses switch
Circuit, 9V square waves or 6V square waves are converted into 5V square waves, the impulse sampling passage of single-chip microcomputer are output to, inside single-chip microcomputer
Timed capture function, the frequency and dutycycle of pulse are measured, and the frequency and dutycycle of measurement are shown by display module.
After single-chip microcomputer receives square wave, the cycle of square wave, the inverse of calculating cycle are measured by timed capture functional measurement
Obtain the frequency of the CP signals.Meanwhile pass through the timed capture functional measurement significant level time shared within a cycle
Ratio, obtain the dutycycle of the CP signals.
The present embodiment provide charging pile test device, by the 3rd diode D3,3rd resistor R3, the 4th resistance R4,
4th diode D4, the 5th resistance R5 and single-chip microcomputer measure to the frequency and dutycycle of CP signals, and pass through display module
The frequency and dutycycle are shown, so that tester determines by display module the frequency and dutycycle of CP signals.
Further, on the basis of above-mentioned each embodiment, as shown in figure 3, the 3rd measuring circuit 303 includes
5th diode D5, the second electric capacity C2, add circuit are (for example, the 6th resistance R6, the 7th resistance R7 in Fig. 3, first following and putting
Big device U1 and the second follow-up amplifier U2) and the single-chip microcomputer；
Input of the first end of the 5th diode D5 as the 3rd measuring circuit 303, the five or two pole
Pipe D5 the second end connects the first end of the second electric capacity C2, the second end connection common port DGND of the second electric capacity C2；
The first end of the second electric capacity C2 connects the first end of the add circuit, and the second end of the add circuit connects
The first ADC sampling channels of the single-chip microcomputer are connect, described in the second output end connection corresponding with the first ADC sampling channels
Display module；
During testing the charging pile to be tested, the single-chip microcomputer will be transmitted to the first ADC and adopt
The analog signal of sample passage is converted into data signal, and the valley of the CP signals is calculated according to the add circuit, and passes through institute
State the valley that display module shows the CP signals.
The add circuit includes the 6th resistance R6, the 7th resistance R7, the first follow-up amplifier U1 and second and follows amplification
Device U2；
First end connection the 6th resistance R6 of second electric capacity C2 first end, the second of the 6th resistance R6
End connects the first end of the 7th resistance R7 and the input of the first follow-up amplifier U1, first follow-up amplifier
U1 output end connects the first ADC sampling channels of the single-chip microcomputer；
The input connection reference voltage V of the second follow-up amplifier U2ref, the second follow-up amplifier U2's is defeated
Go out end and connect second ends of the 7th resistance R7.
Further, the second follow-up amplifier U2 and the reference voltage VrefBetween also include resistance R10.Wherein,
Resistance R10 is used for current limliting, and circuit is played a protective role.
It should be noted that wherein the valley of CP signals is charged by the 5th diode D5 to the second electric capacity C2, C2
Possesses voltage holding effect.Because the second electric capacity C2 voltage is negative value, single-chip microcomputer can not be directly entered and measured, thus it is logical
Cross the second follow-up amplifier U2, the 6th resistance R6 and the 7th resistance R7 forms add circuit, negative pressure is raised, then inputs
To the first ADC input channels of single-chip microcomputer, sampling calculating is carried out.Wherein, VrefOn the basis of voltage, followed and put by R10 and second
Big device U2, which is formed, follows amplifying circuit to be output to the 7th resistance R7, to provide the positive voltage in add circuit.
Specifically, according to circuit connecting relation, if the voltage of the second electric capacity C2 first end is V1, input to the first ADC
The voltage of input channel is V0, the 6th resistance R6 resistance is R6, the 7th resistance R7 resistance is R7, then：
According to above formula, the valley point voltage of CP signals
Thus, single-chip microcomputer collection is inputted to the magnitude of voltage V of the single-chip microcomputer0, according toI.e.
The valley of CP signals can be calculated, is then shown the valley of CP signals by display module.
The charging pile test device that the present embodiment provides, the 5th diode D5, second are included by the 3rd measuring circuit 303
Electric capacity C2, add circuit and single-chip microcomputer are that can be achieved to measure the valley of the CP signals of charging pile, and pass through display module
The valley of CP signals is shown, so that tester determines by display module the valley of CP signals.
Further, on the basis of above-mentioned each embodiment, as shown in figure 4, the CC resistance measuring circuits include
8th resistance R8, the 3rd follow-up amplifier U3, the 4th follow-up amplifier U4 and the single-chip microcomputer；
During testing the charging pile to be tested, the first end of the 8th resistance R8 connects the CC
Control lead (equivalent to connection CC resistance) and the input of the 3rd follow-up amplifier U3；
The input connection reference voltage V of the 4th follow-up amplifier U4ref, the 4th follow-up amplifier VrefIt is defeated
Go out the second end that end connects the 8th resistance R8；
The output end of the 3rd follow-up amplifier U3 connects the 2nd ADC sampling channels of the single-chip microcomputer, with described the
3rd output end corresponding to two ADC sampling channels connects the display module；
During testing the charging pile to be tested, the single-chip microcomputer will be transmitted to the 2nd ADC and adopt
The analog signal of sample passage is converted into data signal, and the resistance value of the CC resistance is calculated according to the 8th resistance R8, and leads to
Cross the resistance value that the display module shows the CC resistance.
Further, in addition to be arranged on the 3rd follow-up amplifier U3 output end and the 2nd ADC sampling
The 9th resistance R9 and the 3rd electric capacity C3 between passage；
The output end of the 3rd follow-up amplifier U3 connects the first end of the 9th resistance R9, the 9th resistance R9
The second end connect the 2nd ADC sampling channels and the 3rd electric capacity C3 first end, the second of the 3rd electric capacity C3
End connection common port DGND；
The 9th resistance R9 and the 3rd electric capacity C3 is to the output end output from the 3rd follow-up amplifier U3
Analog signal is filtered processing, and by the analog signal transmission after filtering process to the 2nd ADC sampling channels.
Further, the 4th follow-up amplifier U4 and the reference voltage VrefBetween also include resistance R11.Its
In, resistance R11 is used for current limliting, and circuit is played a protective role.
It should be noted that in the CC resistance measuring circuits that the present embodiment provides, the 8th resistance R8 and CC resistance forms one
Component volt circuit, it is filtered after the 3rd follow-up amplifier U3 follows amplification, then through the 9th resistance R9 and the 3rd electric capacity C3,
Into the 2nd ADC sampling channels of single-chip microcomputer, the resistance that CC is calculated in sampling is carried out.
Specifically, according to circuit connecting relation, if the voltage at CC resistance and the 8th resistance R8 tie points is V2, input is extremely
The voltage of 2nd ADC input channels is Va, the resistance of CC resistance is Rcc, the 8th resistance R8 resistance is R8, then：
According to above formula, the resistance of CC resistance
Thus, single-chip microcomputer collection is inputted to the magnitude of voltage V of the single-chip microcomputera, according toCC electricity can be calculated
The resistance of resistance, then the resistance of CC resistance is shown by display module.
The charging pile test device that the present embodiment provides, is followed by the 8th resistance R8, the 3rd follow-up amplifier U3, the 4th
Amplifier U4 and single-chip microcomputer are measured to the resistance of CC resistance, and the resistance of CC resistance is shown by display module, to survey
Examination personnel determine the resistance of the CC resistance of charging pile to be tested by display module.
Further, on the basis of above-mentioned each embodiment, in addition to voltmeter；
During testing charging pile to be tested, the voltmeter shows the voltage to charging pile output
The magnitude of voltage measured.
Further, on the basis of above-mentioned each embodiment, in addition to load extension mouth.
Further, on the basis of above-mentioned each embodiment, in addition to CP indicator lamps and CC indicator lamps, the CP
Indicator lamp and the CC indicator lamps are all connected with the single-chip microcomputer；
Wherein, the single-chip microcomputer judges whether the frequency of the CP signals is in predeterminated frequency scope and the dutycycle and is
It is no in default duty cycle range, if the frequency of the CP signals is not in the range of the predeterminated frequency or the CP signals
Dutycycle then controls the CP indicator lamps to send and is unsatisfactory for wanting corresponding to the CP signals not in the default duty cycle range
The first prompt message asked；
The single-chip microcomputer judges the resistance value of the CC resistance whether in default CC Standard resistance ranges, if the CC resistance
Resistance value then controls the CC indicator lamps to send and is unsatisfactory for wanting corresponding to the CC resistance not in the default CC Standard resistance ranges
The second prompt message asked.
The charging pile test device that the present embodiment provides, charging pile controlling switch is by the connection status of convert resistance come mould
Intend guiding rule specified in national standard, charging pile output voltage can just be made by switching control switch, A.C. voltmeter is to defeated
Go out voltage to measure and show by liquid crystal display.It is electric in detection plate after power supply, resistance is measured to pipette tips CC resistance by CC
Measure, and peak value, valley, frequency and dutycycle by display module to the CP signals of measurement, and the CC electricity of measurement
The resistance of resistance is shown, realizes comprehensive measurement to the electric parameter of charging pile.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (10)
1. a kind of charging pile test device, it is characterised in that including CP circuitry for signal measurement and CC resistance measuring circuits；
Wherein, during testing charging pile to be tested, the CP circuitry for signal measurement and the trial charging to be measured
The CP control lead connections of stake, peak value, valley, frequency and the dutycycle of the CP signals for measuring the charging pile to be tested；
During testing charging pile to be tested, the CC of the CC resistance measuring circuits and the charging pile to be tested
Lead connection is controlled, for measuring the CC resistance values of the charging pile to be tested.
2. according to the test device described in claim 1, it is characterised in that also including display module；
The display module connects the CC resistance measuring circuits and the CP circuitry for signal measurement, for showing the CC resistance
The CC resistance values of measuring circuit measurement, and the frequency of the CP signals of the display CP circuitry for signal measurement measurement,
Dutycycle, valley and peak value.
3. according to the test device described in claim 2, it is characterised in that the CP circuitry for signal measurement includes being used to measure
Second measurement electricity of the first measuring circuit of the peak value of the CP signals, the frequency for measuring the CP signals and dutycycle
Road, and for measuring the measuring circuit of valley the 3rd of the CP signals；
Wherein, first measuring circuit includes the first diode, the second diode, the first electric capacity, first resistor, second resistance
And analog-to-digital conversion module；
Input of the first end of first diode as first measuring circuit, the second end of first diode
Connect the first end of first electric capacity, the second end connection common port of first electric capacity；
The first end of the first resistor connects the first end of first electric capacity, described in the second end connection of the first resistor
The first end of second resistance, the second end connection common port of the second resistance；
The first end of the second resistance connects the input of the analog-to-digital conversion module, the output end of the analog-to-digital conversion module
Connect the display module；
Second diode is as clamp diode, the first end connection high level of second diode, the connection of the second end
The analog-to-digital conversion module；
During testing the charging pile to be tested, the CP signals pass through described in first diode pair
One electric capacity is charged, and first electric capacity is discharged by the first resistor and the second resistance and transmitted to the analog-to-digital conversion
Module, the analog-to-digital conversion module carry out the digital data transmission related to the peak value of the CP signals to the display module
Display.
4. according to the test device described in claim 3, it is characterised in that second measuring circuit includes the three or two pole
Pipe, 3rd resistor, the 4th resistance, the 4th diode, the 5th resistance and single-chip microcomputer；
Input of the first end of 3rd diode as second measuring circuit, the second end of the 3rd diode
Connect the first end of the 3rd resistor, the second end connection common port of the 3rd resistor；
The first end of the 3rd resistor connects the first end of the 4th diode, and the first end of the 4th diode connects
Connect the first end of the 4th resistance, the second end connection charging control switch of the 4th resistance；
Second end of the 4th diode connects the first end of the 5th resistance and the impulse sampling passage of the single-chip microcomputer,
The second end connection high level of 5th resistance；The first output end corresponding with the impulse sampling passage connects the display
Module；
During testing the charging pile to be tested, the single-chip microcomputer by timed capture function determine transmit to
The frequency and dutycycle of the signal of the impulse sampling passage, and the frequency and the duty are shown by the display module
Than.
5. according to the test device described in claim 4, it is characterised in that the 3rd measuring circuit includes the five or two pole
Pipe, the second electric capacity, add circuit and the single-chip microcomputer；
Input of the first end of 5th diode as the 3rd measuring circuit, the second end of the 5th diode
Connect the first end of second electric capacity, the second end connection common port of second electric capacity；
The first end of second electric capacity connects the first end of the add circuit, described in the second end connection of the add circuit
First ADC sampling channels of single-chip microcomputer, the second output end corresponding with the first ADC sampling channels connect the display mould
Block；
During testing the charging pile to be tested, it is logical that the single-chip microcomputer will be transmitted to the first ADC samplings
The analog signal in road is converted into data signal, and the valley of the CP signals is calculated according to the add circuit, and by described aobvious
Show that module shows the valley of the CP signals.
6. according to the test device described in claim 5, it is characterised in that the add circuit includes the 6th resistance, the 7th
Resistance, the first follow-up amplifier and the second follow-up amplifier；
The first end of second electric capacity connects the first end of the 6th resistance, described in the second end connection of the 6th resistance
The input of the first end of 7th resistance and first follow-up amplifier, the output end connection institute of first follow-up amplifier
State the first ADC sampling channels of single-chip microcomputer；
Second follow-up amplifier input connection reference voltage, second follow-up amplifier output end connection described in
7th the second end of resistance.
7. according to the test device described in claim 4, it is characterised in that the CC resistance measuring circuits include the 8th electricity
Resistance, the 3rd follow-up amplifier, the 4th follow-up amplifier and the single-chip microcomputer；
During testing the charging pile to be tested, the first end of the 8th resistance connects the CC controls and drawn
The input of line and the 3rd follow-up amplifier；
4th follow-up amplifier input connection reference voltage, the 4th follow-up amplifier output end connection described in
Second end of the 8th resistance；
The output end of 3rd follow-up amplifier connects the 2nd ADC sampling channels of the single-chip microcomputer, is adopted with the 2nd ADC
3rd output end corresponding to sample passage connects the display module；
During testing the charging pile to be tested, it is logical that the single-chip microcomputer will be transmitted to the 2nd ADC samplings
The analog signal in road is converted into data signal, according to the resistance value of CC resistance described in the 8th resistance calculations, and by described
Display module shows the resistance value of the CC resistance.
8. according to the device described in claim 7, it is characterised in that also include being arranged on the defeated of the 3rd follow-up amplifier
The 9th resistance and the 3rd electric capacity gone out between end and the 2nd ADC sampling channels；
The output end of 3rd follow-up amplifier connects the first end of the 9th resistance, and the second end of the 9th resistance connects
Connect the first end of the 2nd ADC sampling channels and the 3rd electric capacity, the second end connection common port of the 3rd electric capacity；
9th resistance and the 3rd electric capacity enter to the analog signal of the output end output from the 3rd follow-up amplifier
Row filtering process, and by the analog signal transmission after filtering process to the 2nd ADC sampling channels.
9. according to the device described in claim 1, it is characterised in that also including voltmeter；
During testing charging pile to be tested, the voltmeter is shown to be carried out to the voltage of charging pile output
The magnitude of voltage of measurement.
10. according to the device described in claim 1, it is characterised in that also include load extension mouth.
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|---|---|---|---|
| CN201721026018.4U CN207067288U (en) | 2017-08-16 | 2017-08-16 | A kind of charging pile test device |
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| CN201721026018.4U CN207067288U (en) | 2017-08-16 | 2017-08-16 | A kind of charging pile test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737589A (en) * | 2021-04-02 | 2021-04-30 | 杭州富特科技股份有限公司 | CP signal amplitude sampling algorithm based on electric automobile OBC |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737589A (en) * | 2021-04-02 | 2021-04-30 | 杭州富特科技股份有限公司 | CP signal amplitude sampling algorithm based on electric automobile OBC |
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