CN209513936U - Direct-current charging post tests circuit and its test device - Google Patents
Direct-current charging post tests circuit and its test device Download PDFInfo
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- CN209513936U CN209513936U CN201822100448.7U CN201822100448U CN209513936U CN 209513936 U CN209513936 U CN 209513936U CN 201822100448 U CN201822100448 U CN 201822100448U CN 209513936 U CN209513936 U CN 209513936U
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Abstract
The utility model relates to a kind of direct-current charging post test circuit and its test devices, including charging positive terminal, charging negative pole end, voltage signal test side, message voltage detection terminal, ground terminal, analog power, the first sampling module, the second sampling module, third sampling module, oscillography recording module, first switch, second switch, third switch, the 4th switch, the 5th switch, the 6th switch, the 7th switch, the 8th switch, the 9th switch and the tenth switch.By opening and closing relevant switch, the corresponding test point of direct-current charging post can be accordingly adjusted, to be tested accordingly, circuit is tested by above-mentioned direct-current charging post, reduce the quantity of test device, so that test device with the circuit has good portability.
Description
Technical field
The utility model relates to charging pile technical fields, test circuit more particularly to direct-current charging post and its test fills
It sets.
Background technique
Direct-current charging post is used to charge for electric car, and the reliability and metering accuracy of charging will have a direct impact on consumption
The use of person.Charging pile test at present is surveyed using equipment such as interface simulator, oscillograph, oscillograph and power analyzers
Examination, the equipment of test is excessive, and wiring is complicated between equipment, causes the test to charging pile extremely inconvenient.
Utility model content
Based on this, it is necessary to provide a kind of direct-current charging post test circuit and its test device.
A kind of direct-current charging post test circuit, including charging positive terminal, charging negative pole end, voltage signal test side, message
Voltage detection terminal, ground terminal, analog power, the first sampling module, the second sampling module, third sampling module, oscillography recording mould
Block, first switch, second switch, third switch, the 4th switch, the 5th switch, the 6th switch, the 7th switch, the 8th switch, the
Nine switches and the tenth switch, the charging positive terminal are connect with the first end of the first switch, and the second of the first switch
End is connect with the analog power, and the charging positive terminal is connect with the first end that the third switchs, the third switch
Second end is used to connect with load, and the charging negative pole end is connect with the first end of the second switch, the second switch
Second end is connect with the analog power, and the charging negative pole end is connect with the first end of the 4th switch, and the described 4th opens
The second end of pass be used for load connect, first sampling module respectively with the charging positive terminal and the charging cathode
End connection, the oscillography recording module are connect with the charging positive terminal and the charging negative pole end respectively, the ground terminal
Connect with the first end of the 5th switch, the second end of the 5th switch for being grounded, the voltage signal test side and
The second end of the first end connection of 6th switch, the 6th switch is connect with second sampling module, the message
Voltage detection terminal is connect with the first end of the 7th switch, and the second end of the 7th switch and the third sampling module connect
It connects, the charging positive terminal is connect with the first end of the 8th switch, and the second end of the 8th switch is described for being grounded
Charging negative pole end is connect with the first end of the 9th switch, and for being grounded, the described 6th opens the second end of the 9th switch
The second end of pass is also connect with the first end of the tenth switch, and the second end of the tenth switch is for being grounded.
Above-mentioned direct-current charging post tests circuit, by opening and closing relevant switch, can accordingly adjust direct current and fill
The corresponding test point of electric stake tests circuit by above-mentioned direct-current charging post, reduces test device to be tested accordingly
Quantity so that test device with the circuit have good portability.
It in one of the embodiments, further include first resistor and second resistance, the charging positive terminal passes through described the
One resistance is connect with the first end of the 8th switch, and the charging negative pole end passes through the second resistance and the 9th switch
First end connection.
It in one of the embodiments, further include the 11st switch, the 12nd switch, 3rd resistor and the 4th resistance, institute
It states charging positive terminal and is connect by the 3rd resistor with the 11st switch with first end, the second of the 11st switch
For being grounded, the charging negative pole end is connect by the first end that the 4th resistance is switched with the described 12nd at end, and described the
The second end of 12 switches is for being grounded.
It in one of the embodiments, further include the 5th resistance, the second end of the tenth switch is used for by described the
Five resistance eutral groundings.
Further include in one of the embodiments, the 13rd switch and the 6th resistance, it is described 6th switch second end with
The second end of the first end connection of 13rd switch, the 13rd switch is connect with the 6th resistance first end, institute
The second end of the 6th resistance is stated for being grounded.
The 6th resistance is adjustable resistance in one of the embodiments,.
It in one of the embodiments, further include the 4th sampling module, power supply positive terminal and power supply negative pole end, the 4th sampling
Module is connect with the power supply positive terminal and the power supply negative pole end respectively.
It in one of the embodiments, further include the 7th resistance and the 14th switch, the power supply positive terminal, the described 7th
Resistance, the 14th switch and power supply negative pole end series connection.
It in one of the embodiments, further include diode, the second end of the first switch is negative with the diode
The anode of pole connection, the diode is connect with the analog power.
A kind of direct-current charging post test device tests electricity including the direct-current charging post as described in above-mentioned any embodiment
Road.
Detailed description of the invention
Fig. 1 is that the direct-current charging post of one embodiment tests the circuit diagram of circuit；
Fig. 2 is the schematic diagram in a direction of the direct-current charging post test device of one embodiment.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
As shown in Figure 1, a kind of direct-current charging post tests circuit 10, including charging positive terminal in one of the embodiments,
S1, charging negative pole end S2, voltage signal test side S3, message voltage detection terminal S4, ground terminal S5, analog power 600, first are adopted
Egf block 100, the second sampling module 200, third sampling module 300, oscillography recording module 500, first switch K1, second switch
K2, third switch K3, the 4th switch K4, the 5th switch K5, the 6th switch K6, the 7th switch K7, the 8th switch K8, the 9th switch
K9 and the tenth switch K10, the charging positive terminal S1 are connect with the first end of the first switch K1, the first switch K1's
Second end is connect with the analog power 600, and the charging positive terminal S1 is connect with the first end of the third switch K3, described
The second end of third switch K3 with load 810 for connecting, the first end of charging the negative pole end S2 and the second switch K2
Connection, the second end of the second switch K2 are connect with the analog power 600, and the charging negative pole end S2 is opened with the described 4th
The first end connection of K4 is closed, the second end of the 4th switch K4 with load 810 for connecting, first sampling module 100
Connect respectively with the charging positive terminal S1 and the charging negative pole end S2, the oscillography recording module 500 respectively with it is described
The first end of charging positive terminal S1 and the charging negative pole end S2 connection, the ground terminal S5 and the 5th switch K5 connect
It connecing, the second end of the 5th switch K5 is for being grounded, and the first of the voltage signal test side S3 and the 6th switch K6
End connection, the second end of the 6th switch K6 connect with second sampling module 200, the message voltage detection terminal S4 and
The first end of the 7th switch K7 connects, and the second end of the 7th switch K7 is connect with the third sampling module 300, institute
It states charging positive terminal S1 to connect with the first end of the 8th switch K8, the second end of the 8th switch K8 is for being grounded, institute
It states charging negative pole end S2 to connect with the first end of the 9th switch K9, the second end of the 9th switch K9 is for being grounded, institute
The second end for stating the 6th switch K6 is also connect with the first end of the tenth switch K10, and the second end of the tenth switch K10 is used
In ground connection.It is noted that the second end of the 5th switch K5, the second end and the described 9th of the 8th switch K8 are opened
The second end for closing K9 is respectively used to be grounded, and the mode of ground connection is either the second end of the 5th switch K5, the described 8th open
The second end and the second end of the 9th switch K9 for closing K8 are connect with ground respectively, are also possible to the of the 5th switch K5
The second end at two ends, the second end of the 8th switch K8 and the 9th switch K9 is connect with ground terminal S5 respectively.This implementation
In example, the second end point of the second end of the 5th switch K5, the second end of the 8th switch K8 and the 9th switch K9
It is not connect with ground terminal S5.
Specifically, as shown in Figure 1, the direct-current charging post includes charging interface 800, charging interface 800 includes the end DC+
Son, DC- terminal, E-GND terminal, CC1 terminal, CC2 terminal, A+ terminal, A- terminal.
In the present embodiment, first sampling module 100, second sampling module 200 and the third sampling module
300 be respectively voltage sampling circuit, and specifically, the charging positive terminal S1 is used for the DC+ with direct-current charging post test circuit 10
Terminal connection, the charging negative pole end S2 are used to connect with the DC- terminal of direct-current charging post test circuit 10, first sampling
Module 100 is used to acquire the voltage of DC+ terminal and DC- terminal, and the oscillography recording module 500 is for acquiring and storing DC+
The electric signal of terminal and DC- terminal, and for being converted into waveform, the voltage signal test side S3 is used to survey with direct-current charging post
The CC1 terminal connection of circuit 10 is tried, second sampling module 200 is used to acquire the voltage of CC1 terminal, the message voltage inspection
It surveys end S4 to be used to connect with the CC2 terminal of direct-current charging post test circuit 10, the third sampling module 300 is for acquiring CC2
The voltage of terminal, the ground terminal S5 are used to connect with the E-GND terminal of direct-current charging post test circuit 10.Pass through acquisition electricity
Pressure, can be converted to other corresponding data, in one embodiment, convert voltages into data-signal by digital analog converter.
In one embodiment, in the voltage sampling circuit, the second sampling module 200 in first sampling module 100
Voltage sampling circuit, the voltage sampling circuit in third sampling module 300, oscillography recording module 500 and digital analog converter are logical
The capture card for crossing NI company realizes (NI, national instruments, American National instrument (NI) Co., Ltd).One reality
It applies in example, the PCIe-7841 of the model NI company of the capture card.In one embodiment, the model NI of the capture card
The USB-7856 of company.It is noted that voltage sampling circuit, the second sampling module in first sampling module 100
Voltage sampling circuit in 200, the voltage sampling circuit in third sampling module 300, oscillography recording module 500 and digital-to-analogue conversion
Device can be implemented by using the prior art, the not burdensome explanation of the present embodiment.
Above-mentioned direct-current charging post tests circuit 10, by opening and closing relevant switch, can accordingly adjust direct current
The corresponding test point of charging pile tests circuit 10 by above-mentioned direct-current charging post, reduces test to be tested accordingly
The quantity of device, so that test device with the circuit has good portability.In addition, direct-current charging post tests circuit 10
The also battery management system of analog electric car can be emulated to timing is charged normal, and can also simulate abnormal charging shape
State, can also can test direct-current charging post stop charging immediately, or can test direct-current charging post start charge protection immediately.
Also it can be adjustable charging output electric current by adjusting external load 810, meet each regulation point calibrating needs of charging pile measurement verification.
To avoid being shorted, as shown in Figure 1, the direct-current charging post test circuit 10 also wraps in one of the embodiments,
It includes first resistor R1 and second resistance R2, the charging positive terminal S1 passes through the first resistor R1's and the 8th switch K8
First end connection, the charging negative pole end S2 are connect by the second resistance R2 with the first end of the 9th switch K9.This
In embodiment, the resistance value of the first resistor R1 is 48k Ω.In the present embodiment, the resistance value of the second resistance R2 is 48k Ω.
As shown in Figure 1, the direct-current charging post test circuit 10 further includes the 11st switch in one of the embodiments,
K11, the 12nd switch K12,3rd resistor R3 and the 4th resistance R4, the charging positive terminal S1 by the 3rd resistor R3 with
The 11st switch K11 is connect with first end, and the second end of the 11st switch K11 is for being grounded, the charging cathode
End S2 is connect by the 4th resistance R4 with the first end of the 12nd switch K12, and the second of the 12nd switch K12
End is for being grounded.In the present embodiment, the resistance value of the 3rd resistor R3 is 240k Ω.In the present embodiment, the 4th resistance R4
Resistance value be 240k Ω.
As shown in Figure 1, the direct-current charging post test circuit 10 further includes the 5th resistance in one of the embodiments,
The second end of R5, the tenth switch K10 are used to be grounded by the 5th resistance R5.In the present embodiment, the 5th resistance
The resistance value of R5 is 1k Ω.
As shown in Figure 1, the direct-current charging post test circuit 10 further includes the 13rd switch in one of the embodiments,
The second end of K13 and the 6th resistance R6, the 6th switch K6 are connect with the first end of the 13rd switch K13, and described
The second end of 13 switch K13 is connect with the 6th resistance R6 first end, and the second end of the 6th resistance R6 is for being grounded.
As shown in Figure 1, the 6th resistance R6 is adjustable resistance in one of the embodiments,.It is described in the present embodiment
The resistance value of 6th resistance R6 is 0.4k Ω~5k Ω.
For detect direct-current charging post power pack situation, as shown in Figure 1, the direct current in one of the embodiments,
Charging pile test circuit 10 further includes the 4th sampling module 400, power supply positive terminal and power supply negative pole end, the 4th sampling module 400
It is connect respectively with the power supply positive terminal and the power supply negative pole end.The power supply positive terminal is for the A+ with direct-current charging post
Terminal connection, the power supply negative pole end with the A- terminal of direct-current charging post for connecting, and the 4th sampling module 400 is for adopting
Collect the voltage of A+ terminal and A- terminal.In the present embodiment, the 4th sampling module 400 is voltage sampling circuit, for acquiring A
The voltage of+terminal and A- terminal, in the present embodiment, existing skill is can be used in the voltage sampling circuit of the 4th sampling module 400
Art realization, the not burdensome explanation of the present embodiment.
As shown in Figure 1, the direct-current charging post test circuit 10 further includes the 7th resistance R7 in one of the embodiments,
With the 14th switch K14, the power supply positive terminal, the 7th resistance R7, the 14th switch K14 and the power supply cathode
End series connection.In the present embodiment, the resistance value of the 7th resistance R7 is 0.1k Ω.
To protect analog power 600, as shown in Figure 1, the direct-current charging post tests circuit in one of the embodiments,
10 further include diode D1, and the second end of the first switch K1 is connect with the cathode of the diode D1, the diode D1
Anode connect with the analog power 600, the diode D1 plays overvoltage protection in circuit.
As shown in Figure 1, a kind of direct-current charging post tests circuit 10, including charging positive terminal in one of the embodiments,
S1, charging negative pole end S2, voltage signal test side S3, message voltage detection terminal S4, ground terminal S5, power supply positive terminal, power supply are negative
Extreme analog power 600, the first sampling module 100, the second sampling module 200, third sampling module 300, oscillography recording module
500, first switch K1, second switch K2, third switch K3, the 4th switch K4, the 5th switch K5, the 6th switch K6, the 7th open
Close K7, the 8th switch K8, the 9th switch K9, the tenth switch K10, the 11st switch K11, the 12nd switch K12, the 13rd switch
K13, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6, it is described to fill
Electric positive terminal S1 is connect with the first end of the first switch K1, the second end of the first switch K1 and the analog power
600 connections, the charging positive terminal S1 are connect with the first end of the third switch K3, and the second end of the third switch K3 is used
It is connect in load 810, the charging negative pole end S2 is connect with the first end of the second switch K2, the second switch K2's
Second end is connect with the analog power 600, and the charging negative pole end S2 is connect with the first end of the 4th switch K4, described
The second end of 4th switch K4 for being connect with load 810, first sampling module 100 respectively with the charging positive terminal S1
And the charging negative pole end S2 connection, the oscillography recording module 500 respectively with the charging positive terminal S1 and described fill
Electric negative pole end S2 connection, the ground terminal S5 are connect with the first end of the 5th switch K5, and the second of the 5th switch K5
End is for being grounded, and the voltage signal test side S3 is connect with the first end of the 6th switch K6, the 6th switch K6's
Second end is connect with second sampling module 200, the first end of the message voltage detection terminal S4 and the 7th switch K7
Connection, the second end of the 7th switch K7 are connect with the third sampling module 300, and the charging positive terminal S1 passes through described
First resistor R1 is connect with the first end of the 8th switch K8, and the second end of the 8th switch K8 is described to fill for being grounded
Electric negative pole end S2 is connect by the second resistance R2 with the first end of the 9th switch K9, and the second of the 9th switch K9
For being grounded, the second end of the 6th switch K6 is connect with the first end of the tenth switch K10 at end, the tenth switch
The second end of K10 is used to be grounded by the 5th resistance R5, the second end of the 6th switch K6 and the 13rd switch
The first end of K13 connects, and the second end of the 13rd switch K13 is connect with the 6th resistance R6 first end, and the described 6th
For the second end of resistance R6 for being grounded, the 6th resistance R6 is adjustable resistance, and the charging positive terminal S1 passes through the third
Resistance R3 is connect with the 11st switch K11 with first end, and the second end of the 11st switch K11 is described for being grounded
Charging negative pole end S2 is connect by the 4th resistance R4 with the first end of the 12nd switch K12, the 12nd switch
The second end of K12 is for being grounded.
Circuit 10 is tested below in conjunction with the direct-current charging post in above-described embodiment, illustrates test method.
A kind of charge control state test method is provided in one of the embodiments, in the present embodiment, by DC charging
The original state of stake test circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 disconnection, the
Four switch K4 are disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 is disconnected, the 12nd switch K12 is disconnected
It opens, the 13rd switch K13 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch K6 closure, the 7th switch
K7 closure, the tenth switch K10 closure.In the present embodiment, test process includes: by direct-current charging post and direct-current charging post test electricity
Road 10 connects.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the direct-current charging post.Starting
After direct-current charging post, direct-current charging post starts CAN (controller local area network, Controller Area Network) communication, with
So that direct-current charging post is shaken hands with direct-current charging post test circuit 10, so that direct-current charging post tests circuit 10 to direct-current charging post
Power supply.Direct-current charging post voluntarily enables Insulation monitoring.It is closed first switch K1 and second switch K2.Direct-current charging post voluntarily detects
Whether simulated battery voltage is normal, and makes direct-current charging post starting charging.First switch K1 and second switch K2 is disconnected, and is closed
Third switch K3 and the 4th switch K4.Direct-current charging post is set to test 10 external load 810 of circuit, the positive terminal S1 that makes to charge is by the
Three switch K3 are connect with load 810, and connect charging negative pole end S2 with load 810 by the 4th switch K4.It is adopted by first
Egf block 100 detection charging positive terminal S1 and charge negative pole end S2 voltage, voltage is compared with predeterminated voltage, if voltage and
The error of predeterminated voltage is then normal within the allowable range, if the error of voltage and predeterminated voltage not within the allowable range if it is abnormal.
A kind of charging connection control sequential test method is provided in one of the embodiments, in the present embodiment, by direct current
The original state that charging pile tests circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 is disconnected
It opens, the 4th switch K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 is disconnected, the 12nd switch
K12 is disconnected, the 13rd switch K13 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 is closed, the 6th switch K6 is closed, the
Seven switch K7 closure, the tenth switch K10 closure.In the present embodiment, test process includes: by direct-current charging post and direct-current charging post
Circuit 10 is tested to connect.It is closed the 5th switch K5, disconnects the 6th switch K6, the 7th switch K7 of closure to simulate plug in rifle.Manually press
Mechanical switch on underthrust rifle.It is closed the 6th switch K6.It is artificial to unclamp the mechanical switch inserted on rifle.Start direct-current charging post, this
In embodiment, swiped the card in direct-current charging post to start the direct-current charging post.After starting direct-current charging post, direct-current charging post starting
CAN communication, so that direct-current charging post and direct-current charging post test circuit 10 are shaken hands, so that direct-current charging post is to direct-current charging post
Circuit 10 is tested to power.Direct-current charging post voluntarily enables Insulation monitoring.It is closed first switch K1 and second switch K2.DC charging
Voluntarily whether detection simulated battery voltage is normal for stake, and makes direct-current charging post starting charging.First switch K1 and second is disconnected to open
Close K2.It is closed third switch K3 and the 4th switch K4.So that direct-current charging post is tested 10 external load 810 of circuit, makes charging anode
End S1 is connect by third switch K3 with load 810, and connect charging negative pole end S2 with load 810 by the 4th switch K4.
Make direct-current charging post terminate to charge, in the present embodiment, is swiped the card in direct-current charging post to terminate the direct-current charging post charging.Manually
By the mechanical switch on underthrust rifle.Disconnect the 6th switch K6.It is artificial to unclamp the mechanical switch inserted on rifle.It checks in test process,
Respectively close the switch or disconnection process in, whether the timing of the voltage detected by the first sampling module meets national standard, if
It is then qualified to meet, if be unsatisfactory for it is unqualified.
A kind of communication disruption test method is provided in one of the embodiments, in the present embodiment, direct-current charging post is surveyed
The original state for trying circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 is disconnected, the 4th opens
Close that K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 disconnection, the 12nd switch K12 disconnection, the
13 switch K13 are disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch K6 closure, the 7th switch K7 are closed
It closes, the tenth switch K10 closure.In the present embodiment, test process includes: that direct-current charging post and direct-current charging post are tested circuit 10
Connection.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the direct-current charging post.Start direct current
After charging pile, direct-current charging post starts CAN communication, so that direct-current charging post is shaken hands with direct-current charging post test circuit 10, with
Direct-current charging post is set to power to direct-current charging post test circuit 10.Direct-current charging post voluntarily enables Insulation monitoring.Closure first is opened
Close K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal, and fills direct-current charging post starting
Electricity.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.Direct-current charging post is set to test circuit
10 external loads 810 connect charging positive terminal S1 with load 810 by third switch K3, and pass through charging negative pole end S2
4th switch K4 is connect with load 810.Direct-current charging post is set to stop paying out message analogue communication interruption.It is logical that CAN is carried out after three seconds again
Believe and restarts direct-current charging post starting charging.Message analogue communication interruption is stopped paying out again.In the present embodiment, it can simulate and stop paying out
Whether message direct-current charging post, which will continue to, is charged, and theoretically direct-current charging post says stopping charging after stopping paying out message three seconds, by stopping
Transmit messages Wen Sanmiao, and checks that the voltage that charge positive terminal S1 and the negative pole end S2 that charges are detected by the first sampling module 100 is
No is 0V, if the voltage of charging positive terminal S1 and the negative pole end S2 that charges are 0V, illustrates to have stopped charging, then normally, if filling
The voltage of electric positive terminal S1 and charging negative pole end S2 are not 0V, then illustrate not stop charging, then abnormal.
A kind of S switch is provided in one of the embodiments, and disconnects test method, in the present embodiment, by direct-current charging post
The original state for testing circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 disconnection, the 4th
Switch K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 is disconnected, the 12nd switch K12 is disconnected,
13rd switch K13 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch K6 closure, the 7th switch K7
Closure, the tenth switch K10 closure.In the present embodiment, test process includes: that direct-current charging post and direct-current charging post are tested circuit
10 connections.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the direct-current charging post.Starting is straight
After current charge stake, direct-current charging post starts CAN communication, so that direct-current charging post is shaken hands with direct-current charging post test circuit 10,
So that direct-current charging post is powered to direct-current charging post test circuit 10.Direct-current charging post voluntarily enables Insulation monitoring.Closure first
Switch K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal, and starts direct-current charging post
Charging.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.Make direct-current charging post test electricity
10 external load 810 of road connect charging positive terminal S1 with load 810 by third switch K3, and keeps charging negative pole end S2 logical
The 4th switch K4 is crossed to connect with load 810.Disconnect the S switch of direct-current charging post.It checks and is detected by the first sampling module 100
Whether the voltage of charging positive terminal S1 and the negative pole end S2 that charges are 0V, if the voltage of charging positive terminal S1 and charging negative pole end S2 are
0V then illustrates to have stopped charging, then normally, if the voltage of charging positive terminal S1 and the negative pole end S2 that charges are not 0V, illustrates
Do not stop charging, then it is abnormal.
A kind of vehicle interface is provided in one of the embodiments, and disconnects test method, in the present embodiment, by DC charging
The original state of stake test circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 disconnection, the
Four switch K4 are disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 is disconnected, the 12nd switch K12 is disconnected
It opens, the 13rd switch K13 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch K6 closure, the 7th switch
K7 closure, the tenth switch K10 closure.In the present embodiment, test process includes: by direct-current charging post and direct-current charging post test electricity
Road 10 connects.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the direct-current charging post.Starting
After direct-current charging post, direct-current charging post starts CAN communication, so that direct-current charging post is held with direct-current charging post test circuit 10
Hand, so that direct-current charging post is powered to direct-current charging post test circuit 10.Direct-current charging post voluntarily enables Insulation monitoring.Closure the
One switch K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal, and opens direct-current charging post
Dynamic charging.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.Test direct-current charging post
10 external load 810 of circuit connect charging positive terminal S1 with load 810 by third switch K3, and makes the negative pole end S2 that charges
It is connect by the 4th switch K4 with load 810.The 6th switch K6 is disconnected, simulating vehicle interface disconnects.It checks through the first sampling
Module 100 detects whether the voltage of charging positive terminal S1 and the negative pole end S2 that charges are 0V, if charging positive terminal S1 and charging are negative
The voltage of extreme S2 is 0V, then illustrates to have stopped charging, then normally, if the voltage of charging positive terminal S1 and the negative pole end S2 that charges
Be not 0V, then illustrate not stop charging, then it is abnormal.
There is provided a kind of output voltage in one of the embodiments, is more than vehicle permissible value test method, in the present embodiment,
The original state of direct-current charging post test circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch
K3 is disconnected, the 4th switch K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 disconnection, the 12nd
Switch K12 is disconnected, the 13rd switch K13 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch K6 are closed
It closes, the 7th switch K7 closure, the tenth switch K10 closure.In the present embodiment, test process includes: by direct-current charging post and direct current
Charging pile is tested circuit 10 and is connected.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the direct current
Charging pile.After starting direct-current charging post, direct-current charging post starts CAN communication, so that direct-current charging post and direct-current charging post are surveyed
Examination circuit 10 is shaken hands, so that direct-current charging post is powered to direct-current charging post test circuit 10.Direct-current charging post voluntarily enables insulation
Detection.It is closed first switch K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal, and makes straight
Current charge stake starting charging.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.Make direct current
Charging pile tests 10 external load 810 of circuit, connect charging positive terminal S1 with load 810 by third switch K3, and make to fill
Electric negative pole end S2 is connect by the 4th switch K4 with load 810.It is more than vehicle permissible value by CAN message regulatory demand voltage.
Check detect whether the voltage of charging positive terminal S1 and the negative pole end S2 that charges are 0V by the first sampling module 100, if charging
The voltage of positive terminal S1 and charging negative pole end S2 are 0V, then illustrate to have stopped charging, then normally, if charging and is filled positive terminal S1
The voltage of electric negative pole end S2 is not 0V, then illustrates not stop charging, then abnormal.
A kind of insulation fault test method is provided in one of the embodiments, in the present embodiment, direct-current charging post is surveyed
The original state for trying circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 is disconnected, the 4th opens
Close that K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 disconnection, the 12nd switch K12 disconnection, the
13 switch K13 are disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch K6 closure, the 7th switch K7 are closed
It closes, the tenth switch K10 closure.In the present embodiment, test process includes: that direct-current charging post and direct-current charging post are tested circuit 10
Connection.If unilateral insulation is closed the 8th switch K8 or the 11st switch K11, selected if bilateral insulation following scheme it
One, it is closed the 8th switch K8 and the 9th switch K9, or closure the 11st switch K11 and the 12nd switch K12.Starting direct current fills
Electric stake in the present embodiment, is swiped the card in direct-current charging post to start the direct-current charging post.Direct-current charging post voluntarily enables insulation inspection
It surveys.Check whether direct-current charging post normally starts, if then abnormal, if otherwise normal.
A kind of grounded continuous loss test method of protection conductor is provided in one of the embodiments, in the present embodiment,
The original state of direct-current charging post test circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch
K3 is disconnected, the 4th switch K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 disconnection, the 12nd
Switch K12 is disconnected, the 13rd switch K13 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch K6 are closed
It closes, the 7th switch K7 closure, the tenth switch K10 closure.In the present embodiment, test process includes: by direct-current charging post and direct current
Charging pile is tested circuit 10 and is connected.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the direct current
Charging pile.After starting direct-current charging post, direct-current charging post starts CAN communication, so that direct-current charging post and direct-current charging post are surveyed
Examination circuit 10 is shaken hands, so that direct-current charging post is powered to direct-current charging post test circuit 10.Direct-current charging post voluntarily enables insulation
Detection.It is closed first switch K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal, and makes straight
Current charge stake starting charging.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.Make direct current
Charging pile tests 10 external load 810 of circuit, connect charging positive terminal S1 with load 810 by third switch K3, and make to fill
Electric negative pole end S2 is connect by the 4th switch K4 with load 810.The 5th switch K5 is disconnected, judges whether to stop charging, check logical
It crosses the first sampling module 100 and detects whether the voltage of charging positive terminal S1 and the negative pole end S2 that charges are 0V, if charging positive terminal
The voltage of S1 and charging negative pole end S2 are 0V, then illustrate to have stopped charging, then normally, if charging positive terminal S1 and charging cathode
The voltage for holding S2 is not 0V, then illustrates not stop charging, then abnormal.
A kind of charge control output test test method is provided in one of the embodiments, in the present embodiment, by direct current
The original state that charging pile tests circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 is disconnected
It opens, the 4th switch K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 is disconnected, the 12nd switch
K12 is disconnected, the 13rd switch K13 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 is closed, the 6th switch K6 is closed, the
Seven switch K7 closure, the tenth switch K10 closure.In the present embodiment, test process includes: by direct-current charging post and direct-current charging post
Circuit 10 is tested to connect.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the DC charging
Stake.After starting direct-current charging post, direct-current charging post starts CAN communication, so that direct-current charging post and direct-current charging post test electricity
Road 10 is shaken hands, so that direct-current charging post is powered to direct-current charging post test circuit 10.Direct-current charging post voluntarily enables Insulation monitoring.
It is closed first switch K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal, and fills direct current
Electric stake starting charging.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.Make DC charging
Stake test 10 external load 810 of circuit, connect charging positive terminal S1 with load 810 by third switch K3, and keeps charging negative
Extreme S2 is connect by the 4th switch K4 with load 810.Charging positive terminal S1 and charging are detected by the first sampling module 100
Voltage value is compared with the voltage value that charging pile is shown, and checks voltage value and fill by the voltage value of negative pole end S2
Whether the error between voltage value that electric stake is shown meets prescribed requirement.
A kind of control steering voltage limit test method (test before charging), this reality are provided in one of the embodiments,
It applies in example, the original state of direct-current charging post test circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected,
Third switch K3 is disconnected, the 4th switch K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the tenth switch K10 is disconnected,
11st switch K11 is disconnected, the 12nd switch K12 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch
K6 closure, the 7th switch K7 closure, the 13rd switch K13 closure.In the present embodiment, test process includes: by direct-current charging post
It is connect with direct-current charging post test circuit 10.Adjusting the 6th resistance R6 resistance value makes the voltage of voltage signal test side S3 to be
It is abnormal to check whether direct-current charging post prompts connection by 3.65V~4.37V, if then normal, if otherwise abnormal.Adjust the 6th electricity
Resistance R6 resistance value make voltage signal test side S3 voltage be greater than 0V and be less than 3.2V, check direct-current charging post whether the company of prompt
Exception is connect, if then abnormal, if otherwise normal.Adjusting the 6th resistance R6 resistance value makes the voltage of voltage signal test side S3 be big
In 4.8V, it is abnormal to check whether direct-current charging post prompts connection, if then abnormal, if otherwise normal.
A kind of control steering voltage limit test method (testing in charging), this reality are provided in one of the embodiments,
It applies in example, the original state of direct-current charging post test circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected,
Third switch K3 is disconnected, the 4th switch K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the tenth switch K10 is disconnected,
11st switch K11 is disconnected, the 12nd switch K12 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch
K6 closure, the 7th switch K7 closure, the 13rd switch K13 closure.In the present embodiment, test process includes: by direct-current charging post
It is connect with direct-current charging post test circuit 10.Start direct-current charging post, in the present embodiment, swipes the card in direct-current charging post to start
State direct-current charging post.After starting direct-current charging post, direct-current charging post starts CAN communication, so that direct-current charging post is filled with direct current
Electric stake test circuit 10 is shaken hands, so that direct-current charging post is powered to direct-current charging post test circuit 10.Direct-current charging post voluntarily opens
Use Insulation monitoring.It is closed first switch K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal,
And make direct-current charging post starting charging.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.
So that direct-current charging post is tested 10 external load 810 of circuit, connect charging positive terminal S1 with load 810 by third switch K3,
And it connect charging negative pole end S2 with load 810 by the 4th switch K4.Adjusting the 6th resistance R6 resistance value examines voltage signal
The voltage for surveying end S3 is 3.65V~4.37V, and it is abnormal to check whether direct-current charging post prompts connection, if then normal, if otherwise different
Often.Adjusting the 6th resistance R6 resistance value makes the voltage of voltage signal test side S3 be greater than 0V and to be less than 3.2V, checks that direct current fills
It is abnormal whether electric stake prompts connection, if then abnormal, if otherwise normal.Adjusting the 6th resistance R6 resistance value detects voltage signal
The voltage for holding S3 is that it is abnormal to check whether direct-current charging post prompts connection greater than 4.8V, if then abnormal, if otherwise normal.
A kind of operating error test method is provided in one of the embodiments, in the present embodiment, direct-current charging post is surveyed
The original state for trying circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 is disconnected, the 4th opens
Close that K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 disconnection, the 12nd switch K12 disconnection, the
13 switch K13 are disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch K6 closure, the 7th switch K7 are closed
It closes, the tenth switch K10 closure.In the present embodiment, test process includes: that direct-current charging post and direct-current charging post are tested circuit 10
Connection.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the direct-current charging post.Start direct current
After charging pile, direct-current charging post starts CAN communication, so that direct-current charging post is shaken hands with direct-current charging post test circuit 10, with
Direct-current charging post is set to power to direct-current charging post test circuit 10.Direct-current charging post voluntarily enables Insulation monitoring.Closure first is opened
Close K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal, and fills direct-current charging post starting
Electricity.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.Direct-current charging post is set to test circuit
10 external loads 810 connect charging positive terminal S1 with load 810 by third switch K3, and pass through charging negative pole end S2
4th switch K4 is connect with load 810.Charging positive terminal S1 is detected by the first sampling module 100 and charges negative pole end S2's
The pulse of voltage is compared with the pulse that direct-current charging post is shown, checks the voltage that the first sampling module detects by voltage
Within the limits prescribed whether the error for the pulse that pulse and charging pile are shown, normal if within the limits prescribed, if not existing
It is then abnormal in the range of regulation.
A kind of error of indication and charging error testing method be provided in one of the embodiments, it, will be straight in the present embodiment
The original state that circuit 10 is tested in current charge stake is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 is disconnected
It opens, the 4th switch K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 is disconnected, the 12nd switch
K12 is disconnected, the 13rd switch K13 is disconnected, the 14th switch K14 is disconnected, the 5th switch K5 is closed, the 6th switch K6 is closed, the
Seven switch K7 closure, the tenth switch K10 closure.In the present embodiment, test process includes: by direct-current charging post and direct-current charging post
Circuit 10 is tested to connect.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the DC charging
Stake.After starting direct-current charging post, direct-current charging post starts CAN communication, so that direct-current charging post and direct-current charging post test electricity
Road 10 is shaken hands, so that direct-current charging post is powered to direct-current charging post test circuit 10.Direct-current charging post voluntarily enables Insulation monitoring.
It is closed first switch K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal, and fills direct current
Electric stake starting charging.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.Make DC charging
Stake test 10 external load 810 of circuit, connect charging positive terminal S1 with load 810 by third switch K3, and keeps charging negative
Extreme S2 is connect by the 4th switch K4 with load 810.By calculating the voltage value and energization that the first sampling module 100 detects
Voltage value is converted into current value by the time, and voltage value, current value are multiplied with conduction time three and Standard clectrical quantity are calculated,
The standard electricity charge are obtained by the unit price that Standard clectrical quantity is multiplied by electricity, direct-current charging post electricity and the electricity charge are read, by direct-current charging post
The electricity and Standard clectrical quantity of calculating compare and calculating difference, and the electricity charge and the standard electricity charge that direct-current charging post calculates relatively and are calculated
Whether in allowed limits difference checks the difference of electricity and Standard clectrical quantity.In the present embodiment, it can be incited somebody to action by digital analog converter
The standard electricity charge are shown with data mode, convenient for the standard electricity charge compare with the electricity charge that direct-current charging post calculates.
A kind of clocking error test method is provided in one of the embodiments, in the present embodiment, direct-current charging post is surveyed
The original state for trying circuit 10 is adjusted are as follows: first switch K1 is disconnected, second switch K2 is disconnected, third switch K3 is disconnected, the 4th opens
Close that K4 is disconnected, the 8th switch K8 is disconnected, the 9th switch K9 is disconnected, the 11st switch K11 disconnection, the 12nd switch K12 disconnection, the
13 switch K13 are disconnected, the 14th switch K14 is disconnected, the 5th switch K5 closure, the 6th switch K6 closure, the 7th switch K7 are closed
It closes, the tenth switch K10 closure.In the present embodiment, test process includes: that direct-current charging post and direct-current charging post are tested circuit 10
Connection.Start direct-current charging post, in the present embodiment, is swiped the card in direct-current charging post to start the direct-current charging post.Start direct current
After charging pile, direct-current charging post starts CAN communication, so that direct-current charging post is shaken hands with direct-current charging post test circuit 10, with
Direct-current charging post is set to power to direct-current charging post test circuit 10.Direct-current charging post voluntarily enables Insulation monitoring.Closure first is opened
Close K1 and second switch K2.Whether direct-current charging post voluntarily detects simulated battery voltage normal, and fills direct-current charging post starting
Electricity.Disconnect first switch K1 and second switch K2.It is closed third switch K3 and the 4th switch K4.Direct-current charging post is set to test circuit
10 external loads 810 connect charging positive terminal S1 with load 810 by third switch K3, and pass through charging negative pole end S2
4th switch K4 is connect with load 810.By standard GPS time (GPS, Global Positioning System, global location
System) compared with the time that direct-current charging post is shown, check the error for the time that standard GPS time and direct-current charging post are shown
Whether in allowed limits.
A kind of direct-current charging post test device, as shown in Fig. 2, including DC charging described in any one of above-described embodiment
Stake test circuit 10, in the present embodiment, direct-current charging post test device includes shell 900, and the direct-current charging post tests circuit
10 are set in the shell 900, the side of the shell 900 be provided with charging anode interface 910, charging cathode interface 920,
Voltage signal detects interface 930, packet check interface 940, power supply anode interface 950, power supply cathode interface 960 and loading interfaces
970, the charging anode interface 910 is connect with the charging positive terminal S1, and the charging cathode interface 920 and the charging are negative
Extreme S2 connection, the voltage signal detection interface 930 are connect with the voltage signal test side S3, the packet check interface
940 connect with the message voltage detection terminal S4, and the power supply anode interface 950 is connect with the power supply anode interface end S6,
The power supply cathode interface 960 is connect with the power supply cathode interface end S7, and the loading interfaces 970 are opened with the third respectively
Close the second end of K3 and the second end connection of the 4th switch K4.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of direct-current charging post tests circuit, which is characterized in that including charging positive terminal, charging negative pole end, voltage signal inspection
It surveys end, message voltage detection terminal, ground terminal, analog power, the first sampling module, the second sampling module, third sampling module, show
Wave recording module, first switch, second switch, third switch, the 4th switch, the 5th switch, the 6th switch, the 7th switch, the
Eight switches, the 9th switch and the tenth switch, the charging positive terminal are connect with the first end of the first switch, and described first opens
The second end of pass is connect with the analog power, and the charging positive terminal is connect with the first end that the third switchs, and described
The second ends of three switches are used for and load connects, and the charging negative pole end connect with the first end of the second switch, and described the
The second end of two switches is connect with the analog power, and the charging negative pole end is connect with the first end of the 4th switch, institute
The second end for stating the 4th switch is used to connect with load, first sampling module respectively with the charging positive terminal and described
The negative pole end that charges connects, and the oscillography recording module is connect with the charging positive terminal and the charging negative pole end respectively, institute
It states ground terminal to connect with the first end of the 5th switch, the second end of the 5th switch is for being grounded, the voltage signal
Test side is connect with the first end of the 6th switch, and the second end of the 6th switch is connect with second sampling module,
The message voltage detection terminal is connect with the first end of the 7th switch, and the second end of the 7th switch is adopted with the third
Egf block connection, the charging positive terminal are connect with the first end of the 8th switch, and the second end of the 8th switch is used for
Ground connection, the charging negative pole end are connect with the first end of the 9th switch, and the second end of the 9th switch is for being grounded, institute
The second end for stating the 6th switch is also connect with the first end of the tenth switch, and the second end of the tenth switch is for being grounded.
2. direct-current charging post according to claim 1 tests circuit, which is characterized in that further include first resistor and the second electricity
Resistance, the charging positive terminal are connect by the first resistor with the first end of the 8th switch, and the charging negative pole end is logical
The second resistance is crossed to connect with the first end of the 9th switch.
3. direct-current charging post according to claim 2 tests circuit, which is characterized in that further include the 11st switch, the tenth
Two switches, 3rd resistor and the 4th resistance, the charging positive terminal are switched and the by the 3rd resistor and the described 11st
One end connection, the second end of the 11st switch for being grounded, the charging negative pole end pass through the 4th resistance with it is described
The first end connection of 12nd switch, the second end of the 12nd switch is for being grounded.
4. direct-current charging post according to claim 1 tests circuit, which is characterized in that it further include the 5th resistance, described the
The second end of ten switches is used to pass through the 5th resistance eutral grounding.
5. direct-current charging post according to claim 4 tests circuit, which is characterized in that further include the 13rd switch and the 6th
Resistance, the second end of the 6th switch are connect with the first end of the 13rd switch, the second end of the 13rd switch
It is connect with the 6th resistance first end, the second end of the 6th resistance is for being grounded.
6. direct-current charging post according to claim 5 tests circuit, which is characterized in that the 6th resistance is adjustable electric
Resistance.
7. direct-current charging post according to claim 1 tests circuit, which is characterized in that further include the 4th sampling module, supply
Electric positive terminal and power supply negative pole end, the 4th sampling module are connect with the power supply positive terminal and the power supply negative pole end respectively.
8. direct-current charging post according to claim 7 tests circuit, which is characterized in that further include the 7th resistance and the 14th
Switch, the power supply positive terminal, the 7th resistance, the 14th switch and power supply negative pole end series connection.
9. direct-current charging post according to claim 1 tests circuit, which is characterized in that it further include diode, described first
The second end of switch is connect with the cathode of the diode, and the anode of the diode is connect with the analog power.
10. a kind of direct-current charging post test device, which is characterized in that including the direct current as described in claim any one of 1-9
Charging pile tests circuit.
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