CN106226610A - A kind of direct-current charging interface of electric automobile test system and method for testing - Google Patents

A kind of direct-current charging interface of electric automobile test system and method for testing Download PDF

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Publication number
CN106226610A
CN106226610A CN201610107075.9A CN201610107075A CN106226610A CN 106226610 A CN106226610 A CN 106226610A CN 201610107075 A CN201610107075 A CN 201610107075A CN 106226610 A CN106226610 A CN 106226610A
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China
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electric automobile
measured
current potential
normally opened
test system
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CN201610107075.9A
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CN106226610B (en
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颜湘武
张波
谷建成
曲伟
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Baoding Shangyuan Power Technology Co Ltd
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Baoding Shangyuan Power Technology Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a kind of direct-current charging interface of electric automobile test system and the method for testing belonging to charging electric vehicle facility applied technical field, this test system includes testing system receptacle and plug, mode switching circuit, CAN test cell, left and right normally opened relay group (k1‑k19), acquisition controlling plate and host computer constitute；In the case of guarantee off-board charger vehicle plug to be measured and electric automobile vehicle socket to be measured connection are intact, can contact judges off-board charger vehicle plug to be measured and whether the electric automobile each contact of vehicle socket to be measured connects normally, whether internal circuit is in normal condition, to charging inlet communication performance overall merit one by one.Direct-current charging interface of electric automobile fault is analyzed by this method, early warning, will be substantially reduced the workload in the maintenance of charging electric vehicle day-to-day operation and electrically-charging equipment delivery receiving acceptance, the beneficially large-scale promotion application of electric automobile.

Description

A kind of direct-current charging interface of electric automobile test system and method for testing
Technical field
The invention belongs to charging electric vehicle facility applied technical field, particularly to a kind of direct-current charging interface of electric automobile Test system and method for testing.
Background technology
The departments such as State General Administration for Quality Supervision, associating National Energy Board of National Standards Commission, Ministry of Industry and Information, the Department of Science and Technology have issued new revision Electric vehicle charge interface and 5 national standards such as communication protocol, and formally perform on January 1st, 2016, including 1.GB 18487.1 2015 " electric car conduction charging system part 1s: General Requirement "；2.GB 20234.1 2015 " electronic vapour Car conduction chargeable connection device part 1: General Requirement "；3.GB 20234.2 2015 " use by electric car conduction charging Attachment means part 2: alternating-current charging interface "；" electric car conduction charging is with connecting dress for 4.GB 20234.3 2015 Put third portion: direct-current charging interface "；5.GB 27,930 2015 " electric automobile off-board conduction-type charger and battery Communication protocol between management system ".The promotion and implementation of new national standard, ask effective compatibility solving charging pile and safety Topic, advances the simultaneously match development of car and stake.
Along with charging electric vehicle facility is built on a large scale and applies, the charging of electric car conduction charging connecting device Interface connectivity problem will become increasingly conspicuous, and is mainly reflected in: 1. electrically-charging equipment posteriority time receiving of having constructed needs to enter charging pile The basic connecting test of row and communication test；2. in the daily charging process of electric automobile, abnormal if there is charging, how to sentence Disconnected is problem or the problem of electric automobile side of charging pile side.If can ensure that off-board charger vehicle plug to be measured (fills Electricity rifle) and electric automobile vehicle socket to be measured intact (not tearing down) in the case of solution two above problem, straight to electric automobile Current charge interface fault is analyzed, early warning, will be substantially reduced charging electric vehicle regular maintenance and electrically-charging equipment construction is tested The large-scale promotion application of the workload in receipts, beneficially electric automobile.
Summary of the invention
The purpose of the present invention is to propose to a kind of direct-current charging interface of electric automobile test system and method for testing, its feature exists In, this direct-current charging interface of electric automobile test system includes that system receptacle, system plug, mode switching circuit, a CAN survey Examination unit the 1, the 2nd CAN test cell 2, left normally opened relay group (k1‐k9), right normally opened relay group (k10‐k18), acquisition controlling Plate and host computer are constituted；Switching logic control module and mode switching circuit connect；
Described acquisition controlling plate includes switching logic control module, sampling resistor R1‐R17, sampled point AD1‐AD14, normally opened open Close S1‐S4With direct voltage source U1‐U5；Wherein R3And R17For high accuracy number potentiometer；This acquisition controlling plate is provided with pin ①‐And and the k of left and right normally opened relay group1‐k18Corresponding connection；Wherein R3And R17For high accuracy number potentiometer, R1=R2 =R3=20k Ω, R15=R16=R17=20k Ω, R4‐‐R14It is respectively 1k Ω, U1‐U5It is 12V；
Described host computer is by virtual BMS (battery management system) module, virtual off-board charger communication module, data acquisition Collection module and data analysis and processing module are constituted, wherein, and virtual BMS module and the k of left normally opened relay group4、k5Connect；Virtual Off-board charger communication module and the k of right normally opened relay group14、k15Connect；Data acquisition module and Data Analysis Services mould Block connects；Data Analysis Services module connects CAN test cell 1 and a 2nd CAN test cell 2 respectively.
The off-board charger vehicle plug of described test system receptacle and correspondence and test system plug and the electricity of correspondence Electrical automobile vehicle socket has identical 9 contact, and 9 contacts are followed successively by DC source just (DC+), DC source from top to bottom Negative (DC-), protective grounding (PE), charging communication CAN_H (S+) and CAN_L (S-), the first charging connection confirmation of communicating of charging (CC1), the second charging connection confirms that (CC2), low pressure accessory power supply just (A+), low pressure accessory power supply are negative (A-).
Described test pattern switching circuit has two groups, left and right switching pin, and 9, left side pin is with left normally opened relay group K1‐k9Corresponding 9 contacts being connected to test system receptacle together；9, the right pin is with the k of right normally opened relay group18‐k10 Corresponding 9 contacts being connected to test system plug together.
1. described acquisition controlling plate is provided with pinSampling resistor R1、R2、R3It is connected in series in pin 1. with pin 2. Between, switch S1One end ground connection, another terminates sampling resistor R1And R2Points of common connection, switch S2One end ground connection, another termination Sampling resistor R2And R3Points of common connection；Sampling resistor R4、R5With direct voltage source U1Be connected to after series connection pin 3. with ground it Between；Sampling resistor R6One end ground connection, another termination pins is 6.；Sampling resistor R7With direct voltage source U2Pin it is connected to after series connection 7. and between ground；Sampling resistor R8、R9Pin it is connected to 8. and between ground after being connected in series；9. pin is connected to the ground and connects；Pin is 10. It is connected to the ground and connects；PinThrough switch S3With sampling resistor R10Parallel-connection structure and direct voltage source U3Ground connection after series connection；Pin Sampled resistance R12With direct voltage source U4Ground connection；Sampling resistor R13、R14With direct voltage source U5Pin it is connected to after series connection And between ground；Sampling resistor R15、R16、R17It is connected in series in pinAnd pinBetween, switch S4One end ground connection, another termination Sampling resistor R15And R17Points of common connection, switch S5One end ground connection, another terminates sampling resistor R16And R17Commonly connected Point.
Specifically comprising the following steps that of described direct-current charging interface of electric automobile method of testing
1) according to off-board charger parameter to be measured: rated output voltage, output-current rating: and electric automobile to be measured is dynamic Power battery parameter: rated voltage, battery capacity, peak power；By host computer to direct-current charging interface of electric automobile test it is Unite and carry out test parameter configuration: off-board charger rated output voltage to be measured and electric automobile power battery group voltage to be measured etc. Level；And Disconnected mode switching circuit, enter the setup test stage；
2) k of left normally opened relay group is closed3, gather AD2Point current potential, if AD2Point current potential is 6V, the most to be measured off-board Charger vehicle plug is connected normally with the protective grounding (PE) of test system receptacle；If AD2Point current potential is 12V, the most to be measured Off-board charger vehicle plug is normal with test system receptacle protective grounding (PE) malunion, disconnects left normally opened after having tested The k of relay group3；
3) k of left normally opened relay group is closed6, gather AD5Point current potential, if AD5Point current potential is 4V, the most to be measured off-board With test system receptacle the first charging connection, charger vehicle plug confirms that (CC1) is connected normally；If AD5Point current potential is 0V, With the first charging connection of test system receptacle, off-board charger vehicle plug the most to be measured confirms that (CC1) malunion is normal, survey The k of left normally opened relay group is kept after having tried6Guan Bi；
4) k of left normally opened relay group is closed8And k9, gather AD7Point current potential, if AD7Point current potential is 6V, the most to be measured non- Vehicle-mounted charge rolling stock plug is just connected with test system receptacle low pressure accessory power supply just (A+) and low pressure accessory power supply negative (A-) Often；If AD5Point current potential is 0V, off-board charger vehicle plug the most to be measured and test system receptacle low pressure accessory power supply just (A +) and negative (A-) malunion of low pressure accessory power supply is often, disconnects the k of left normally opened relay group after having tested8And k9；
5) k of left normally opened relay group is closed7, gather AD6Point current potential, if AD6Point current potential is 6V, the most to be measured off-board With test system receptacle the second charging connection, charger vehicle plug confirms that (CC2) is connected normally；If AD2Point current potential is 12V, With test system receptacle the second charging connection, off-board charger vehicle plug the most to be measured confirms that (CC2) malunion is normal, test The k of left normally opened relay group is disconnected after completing7；
6) k of left normally opened relay group is closed4And k5, the virtual BMS module cycle send communication handshake message, with to be measured After off-board charger controller completes communication handshake, virtual BMS module is by the charge requirement communication report of simulation electric automobile BMS Literary composition is sent to off-board charger controller to be measured, monitors the communication message in CAN by a CAN test cell 1, enters And evaluated communication message concordance and real-time by Data Analysis Services module, simultaneously by sampled point AD3And AD4Point current potential is sentenced Whether fixed its meets above earth potential less than 25V, AD3And AD4Between current potential less than the requirement of 0.5V, keep a left side normally opened after test The k of relay group4And k5Guan Bi；Wherein, off-board charger controller is that GB 18487.1-2015 " charge by electric car conduction System part 1: General Requirement " regulation in scheme B.1 shown in the intrinsic parts of off-board charger；
7) k of left normally opened relay group is closed1And k2, gather AD4Point current potential, if AD4Point current potential is nonzero value, then treat Survey off-board charger vehicle plug to be just connected with DC source just (DC+) and the DC source negative (DC-) of test system receptacle Often；If AD2Point current potential is 0V, off-board charger vehicle plug the most to be measured and the DC source just (DC testing system receptacle +) and negative (DC-) malunion of DC source is often, has tested the k of rear left normally opened relay group1And k2Guan Bi；
8) Guan Bi switch S1And S2, read in off-board charger controller communication message to be measured by virtual BMS module Insulation fault warning message, if Abnormal Insulation is reported to the police, off-board charging locomotive Insulation monitoring the most to be measured is normal；Without absolutely Edge abnormal alarm, off-board charging locomotive Insulation monitoring the most to be measured is abnormal, disconnects switch S after having tested1And S2, disconnect a left side The k of normally opened relay group1、k2、k4And k6；
9) k of right normally opened relay group is closed10And k11, disconnect switch S1, gather AD8Point current potential, if AD8Point current potential is Nonzero value, electric automobile vehicle socket the most to be measured and low pressure accessory power supply just (A+) and the low pressure accessory power supply of testing system plug Negative (A-) connects normal；If AD5Point current potential is 0V, and electric automobile vehicle socket the most to be measured is auxiliary with the low pressure of test system plug Help power supply just (A+) and negative (A-) malunion of low pressure accessory power supply normal, Guan Bi switch S after having tested1, the holding right side is normally opened continues The k of electrical equipment group10And k11Guan Bi；
10) k of right normally opened relay group is closed16, gather AD13Point current potential, if AD2Point current potential is 6V, the most to be measured electronic Automobile socket is connected normally with the protective grounding (PE) of test system plug；If AD2Point current potential is 0V, the most to be measured electronic Automobile socket is normal with protective grounding (PE) malunion of test system plug, disconnects right normally opened relay after having tested The k of group16；
11) k of right normally opened relay group is closed13, gather AD10Point current potential, if AD10Point current potential is 6V, the most to be measured electronic With the first charging connection of test system plug, automobile socket confirms that (CC1) is connected normally；If AD10Point current potential is 0V, With the first charging connection of test system plug, electric automobile vehicle socket the most to be measured confirms that (CC1) malunion is normal, test The k of right normally opened relay group is disconnected after one-tenth13；
12) k of right normally opened relay group is closed12, gather AD9Point current potential, if AD9Point current potential is 6V, the most to be measured electronic With the second charging connection of test system plug, automobile socket confirms that (CC2) is connected normally；If AD9Point current potential is 0V, With the second charging connection of test system plug, electric automobile vehicle socket the most to be measured confirms that (CC2) malunion is normal, test The k of right normally opened relay group is kept after one-tenth12Guan Bi；
13) k of right normally opened relay group is closed14And k15, the virtual off-board charger communication module cycle send communication Handshake message, after completing communication handshake with electric automobile vehicle controller BMS to be measured, simulates off-board charger controller and receives The charge requirement communication message of electric automobile BMS to be measured is sent out, and is monitored the communication message in CAN by CAN test cell 2, And then evaluated communication message concordance and real-time by Data Analysis Services module, simultaneously by sampled point AD11And AD12Point electricity Position judges whether meet the requirements it, and (above earth potential is less than 25V, AD3And AD4Between current potential less than 0.5V), keep right after test The k of normally opened relay group14And k15Guan Bi；Wherein, electric automobile vehicle controller is that " electric automobile passes GB 18487.1-2015 Lead charging system part 1: General Requirement " B.1 regulation is schemed shown in the intrinsic parts of electric automobile；
14) k of right normally opened relay group is closed17And k18, gather AD14Point current potential, if AD14Point current potential is nonzero value, then Electric automobile vehicle socket to be measured is connected normally with DC source just (DC+) and the DC source negative (DC-) of test system plug； If AD2Point current potential is 0V, electric automobile vehicle socket the most to be measured and DC source just (DC+) and the direct current of testing system plug Negative (DC-) malunion of power supply is normal, keeps the k of right normally opened relay group after having tested17And k18Guan Bi；
15) Guan Bi switch S4And S5, read electric automobile vehicle to be measured by virtual off-board charger communication module and control Insulation fault warning message in the BMS communication message of device, if Abnormal Insulation is reported to the police, electric automobile insulation the most to be measured is just detecting Often；Reporting to the police without Abnormal Insulation, electric automobile insulation the most to be measured detection is abnormal, disconnects switch S after having tested4And S5、 Disconnect the k of right normally opened relay group10、k12、k14、k15、k17And k18；
16) if the off-board charger each contact of vehicle plug to be measured and the electric automobile each contact of vehicle socket to be measured connect Test is all normal, then closed mode switching circuit, makes electric automobile to be measured complete normally to charge bootup process, by first CAN test cell 1 and the 2nd CAN test cell 2 monitor the communication message in CAN, gather charging communication CAN_H (S simultaneously +) to ground level, charging communication CAN_L (S-) to ground level, charging communication CAN_H (S+) and the CAN_L (S-) that communicates that charges Between level through the integrated communication performance of Data Analysis Services post-evaluation CAN: total inorganic nitrogen, the message bit error rate, message one Cause property and message real-time performance.
The invention has the beneficial effects as follows when charging inlet connection failure cannot be charged, can be by off-board charging locomotive Plug (charging gun) and electric automobile vehicle socket are attached state verification, confirm to connect problematic contact；It addition, it is right The communication performance of off-board charger controller or electric automobile vehicle controller BMS is tested, and test result can be directly perceived Understand evaluate tested communication system communication performance, to direct-current charging interface of electric automobile run present in potential faults enter Row early warning；Solving direct-current charging interface of electric automobile fault pre-alarming problem in actual applications, tool has significant practical applications.
Accompanying drawing explanation
Fig. 1 is direct-current charging interface of electric automobile test principle figure.
Detailed description of the invention
The present invention proposes a kind of direct-current charging interface of electric automobile test system and method for testing, below in conjunction with Fig. 1 to this Invention is explained.
Fig. 1 show the direct-current charging interface of electric automobile test used by direct-current charging interface of electric automobile method of testing System schematic diagram.In figure, this direct-current charging interface of electric automobile test system includes testing system receptacle, test system plug, mould Formula switching circuit, CAN test cell the 1, a 2nd CAN test cell 2, there is normally open contact k1‐k9Left normally opened relay Group, there is normally open contact k10‐k18Right normally opened relay group, acquisition controlling plate and host computer constitute；Switching logic control module Connect with mode switching circuit；
Described acquisition controlling plate includes switching logic control module, sampling resistor R1‐R17, sampled point AD1‐AD14, normally opened open Close S1‐S4With direct voltage source U1‐U5；Wherein R3And R17For high accuracy number potentiometer；This acquisition controlling plate is provided with pin ①‐), and and left and right normally opened relay group (k1‐k18) corresponding connection；Wherein R3And R17For high accuracy number potentiometer, R1=R2 =R3=20k Ω, R15=R16=R17=20k Ω, R4‐‐R14It is respectively 1k Ω, U1‐U5It is 12V；
Described host computer is by virtual BMS (battery management system) module, virtual off-board charger communication module, data acquisition Collection module and data analysis and processing module are constituted, wherein, and virtual BMS module and the k of left normally opened relay group4、k5Connect；Virtual Off-board charger communication module and the k of right normally opened relay group14、k15Connect；Data acquisition module and Data Analysis Services mould Block connects；Data Analysis Services module connects CAN test cell 1 and a 2nd CAN test cell 2 respectively.
The off-board charger vehicle plug of described test system receptacle and correspondence and test system plug and the electricity of correspondence Electrical automobile vehicle socket has identical 9 contact, and 9 contacts are followed successively by DC source just (DC+), DC source from top to bottom Negative (DC-), protective grounding (PE), charging communication CAN_H (S+) and CAN_L (S-), the first charging connection confirmation of communicating of charging (CC1), the second charging connection confirms that (CC2), low pressure accessory power supply just (A+), low pressure accessory power supply are negative (A-).
Described test pattern switching circuit has two groups, left and right switching pin, and 9, left side pin is with left normally opened relay group K1‐k9Corresponding 9 contacts being connected to test system receptacle together；9, the right pin is with the k of right normally opened relay group18‐k10 Corresponding 9 contacts being connected to test system plug together.
1. described acquisition controlling plate is provided with pinSampling resistor R1、R2、R3It is connected in series in pin 1. with pin 2. Between, switch S1One end ground connection, another terminates sampling resistor R1And R2Points of common connection, switch S2One end ground connection, another termination Sampling resistor R2And R3Points of common connection；Sampling resistor R4、R5With direct voltage source U1Be connected to after series connection pin 3. with ground it Between；Sampling resistor R6One end ground connection, another termination pins is 6.；Sampling resistor R7With direct voltage source U2Pin it is connected to after series connection 7. and between ground；Sampling resistor R8、R9Pin it is connected to 8. and between ground after being connected in series；9. pin is connected to the ground and connects；Pin is 10. It is connected to the ground and connects；PinThrough switch S3With sampling resistor R10Parallel-connection structure and direct voltage source U3Ground connection after series connection；Pin Sampled resistance R12With direct voltage source U4Ground connection；Sampling resistor R13、R14With direct voltage source U5Pin it is connected to after series connection And between ground；Sampling resistor R15、R16、R17It is connected in series in pinAnd pinBetween, switch S4One end ground connection, another termination Sampling resistor R15And R17Points of common connection, switch S5One end ground connection, another terminates sampling resistor R16And R17Commonly connected Point.
Embodiment: specifically comprising the following steps that of direct-current charging interface of electric automobile method of testing
1) according to off-board charger parameter (rated voltage, rated current) to be measured and electric automobile power battery group to be measured Parameter (rated voltage, battery capacity, peak power), is surveyed direct-current charging interface of electric automobile test system by host computer Examination parameter configuration: off-board charger rated output voltage to be measured and electric automobile power battery group electric pressure to be measured；And break On-mode switching circuit, enters the setup test stage；
2) k of left normally opened relay group is closed3, gather AD2Point current potential, if AD2Point current potential is 6V, the most to be measured off-board Charger vehicle plug is connected normally with the protective grounding (PE) of test system receptacle；If AD2Point current potential is 12V, the most to be measured Off-board charger vehicle plug is normal with test system receptacle protective grounding (PE) malunion, disconnects left normally opened after having tested The contact k of relay group3；
3) k of left normally opened relay group is closed6, gather AD5Point current potential, if AD5Point current potential is 4V, the most to be measured off-board With test system receptacle the first charging connection, charger vehicle plug confirms that (CC1) is connected normally；If AD5Point current potential is 0V, With the first charging connection of test system receptacle, off-board charger vehicle plug the most to be measured confirms that (CC1) malunion is normal, survey The k of left normally opened relay group is kept after having tried6Guan Bi；
4) k of left normally opened relay group is closed8And k9, gather AD7Point current potential, if AD7Point current potential is 6V, the most to be measured non- Vehicle-mounted charge rolling stock plug is just connected with test system receptacle low pressure accessory power supply just (A+) and low pressure accessory power supply negative (A-) Often；If AD5Point current potential is 0V, off-board charger vehicle plug the most to be measured and test system receptacle low pressure accessory power supply just (A +) and negative (A-) malunion of low pressure accessory power supply is often, disconnects the k of left normally opened relay group after having tested8And k9；
5) k of left normally opened relay group is closed7, gather AD6Point current potential, if AD6Point current potential is 6V, the most to be measured off-board With test system receptacle the second charging connection, charger vehicle plug confirms that (CC2) is connected normally；If AD2Point current potential is 12V, With test system receptacle the second charging connection, off-board charger vehicle plug the most to be measured confirms that (CC2) malunion is normal, test The k of left normally opened relay group is disconnected after completing7；
6) k of left normally opened relay group is closed4And k5, the virtual BMS module cycle send communication handshake message, with to be measured After off-board charger controller completes communication handshake, virtual BMS module is by the charge requirement communication report of simulation electric automobile BMS Literary composition is sent to off-board charger controller to be measured, monitors the communication message in CAN by a CAN test cell 1, enters And evaluated communication message concordance and real-time by Data Analysis Services module, simultaneously by sampled point AD3And AD4Point current potential is sentenced Whether fixed its meets above earth potential less than 25V, AD3And AD4Between current potential less than the requirement of 0.5V, keep a left side normally opened after test The k of relay group4And k5Guan Bi；
7) k of left normally opened relay group is closed1And k2, gather AD4Point current potential, if AD4Point current potential is nonzero value, then treat Survey off-board charger vehicle plug to be just connected with DC source just (DC+) and the DC source negative (DC-) of test system receptacle Often；If AD2Point current potential is 0V, off-board charger vehicle plug the most to be measured and the DC source just (DC testing system receptacle +) and negative (DC-) malunion of DC source is often, has tested the k of rear left normally opened relay group1And k2Guan Bi；
8) Guan Bi switch S1And S2, read in off-board charger controller communication message to be measured by virtual BMS module Insulation fault warning message, if Abnormal Insulation is reported to the police, off-board charging locomotive Insulation monitoring the most to be measured is normal；Without absolutely Edge abnormal alarm, off-board charging locomotive Insulation monitoring the most to be measured is abnormal, disconnects switch S after having tested1And S2,Disconnect a left side The k of normally opened relay group1、k2、k4And k6；
9) k of right normally opened relay group is closed10And k11, disconnect switch S1, gather AD8Point current potential, if AD8Point current potential is Nonzero value, electric automobile vehicle socket the most to be measured and low pressure accessory power supply just (A+) and the low pressure accessory power supply of testing system plug Negative (A-) connects normal；If AD5Point current potential is 0V, and electric automobile vehicle socket the most to be measured is auxiliary with the low pressure of test system plug Help power supply just (A+) and negative (A-) malunion of low pressure accessory power supply normal, Guan Bi switch S after having tested1, the holding right side is normally opened continues The k of electrical equipment group10And k11Guan Bi；
10) k of right normally opened relay group is closed16, gather AD13Point current potential, if AD2Point current potential is 6V, the most to be measured electronic Automobile socket is connected normally with the protective grounding (PE) of test system plug；If AD2Point current potential is 0V, the most to be measured electronic Automobile socket is normal with protective grounding (PE) malunion of test system plug, disconnects right normally opened relay after having tested The k of group16；
11) k of right normally opened relay group is closed13, gather AD10Point current potential, if AD10Point current potential is 6V, the most to be measured electronic With the first charging connection of test system plug, automobile socket confirms that (CC1) is connected normally；If AD10Point current potential is 0V, With the first charging connection of test system plug, electric automobile vehicle socket the most to be measured confirms that (CC1) malunion is normal, test The k of right normally opened relay group is disconnected after one-tenth13；
12) k of right normally opened relay group is closed12, gather AD9Point current potential, if AD9Point current potential is 6V, the most to be measured electronic With the second charging connection of test system plug, automobile socket confirms that (CC2) is connected normally；If AD9Point current potential is 0V, With the second charging connection of test system plug, electric automobile vehicle socket the most to be measured confirms that (CC2) malunion is normal, test The k of right normally opened relay group is kept after one-tenth12Guan Bi；
13) k of right normally opened relay group is closed14And k15, the virtual off-board charger communication module cycle send communication Handshake message, after completing communication handshake with electric automobile BMS to be measured, simulates off-board charger controller and receives electronic vapour to be measured The charge requirement communication message of car BMS is sent out, and is monitored the communication message in CAN by CAN test cell 2, and then by data Analysis and processing module evaluates communication message concordance and real-time, simultaneously by sampled point AD11And AD12Point current potential judges that it is No meeting the requirements, (above earth potential is less than 25V, AD3And AD4Between current potential less than 0.5V), keep right normally opened relay after having tested The k of group14And k15Guan Bi.
14) k of right normally opened relay group is closed17And k18, gather AD14Point current potential, if AD14Point current potential is nonzero value, then Electric automobile vehicle socket to be measured is connected normally with DC source just (DC+) and the DC source negative (DC-) of test system plug； If AD2Point current potential is 0V, electric automobile vehicle socket the most to be measured and DC source just (DC+) and the direct current of testing system plug Negative (DC-) malunion of power supply is normal, keeps the k of right normally opened relay group after having tested17And k18Guan Bi；
15) Guan Bi switch S4And S5, read electric automobile BMS to be measured by virtual off-board charger communication module and communicate Insulation fault warning message in message, if Abnormal Insulation is reported to the police, electric automobile insulation the most to be measured detection is normal；Without Abnormal Insulation is reported to the police, and electric automobile insulation the most to be measured detection is abnormal, disconnects switch S after having tested4And S5, disconnect right normally opened The k of relay group10、k12、k14、k15、k17And k18；
16) if the off-board charger each contact of vehicle plug to be measured and the electric automobile each contact of vehicle socket to be measured connect Test is all normal, then closed mode switching circuit, makes electric automobile to be measured complete normally to charge bootup process, by first CAN test cell 1 and the 2nd CAN test cell 2 monitor the communication message in CAN, gather charging communication CAN_H (S simultaneously +) to ground level, charging communication CAN_L (S-) to ground level, charging communication CAN_H (S+) and the CAN_L (S-) that communicates that charges Between level through the integrated communication performance of Data Analysis Services post-evaluation CAN: total inorganic nitrogen, the message bit error rate, message one Cause property and message real-time performance.
Summary, the present invention solves direct-current charging interface of electric automobile accident analysis early warning problem in actual applications (include contact connection status judge and communication performance evaluation), its actual application value is: when charging inlet connection failure without During method charging, can survey by off-board charger vehicle plug (charging gun) and electric automobile vehicle socket being attached state Examination, confirms to connect problematic contact；It addition, off-board charger controller or electric automobile vehicle controller BMS are led to Letter performance is tested, communication performance (total inorganic nitrogen, the report of evaluating tested communication system that test result can be simple and clear Literary composition the bit error rate, message concordance, message real-time performance), to direct-current charging interface of electric automobile run present in potential faults enter Row early warning.

Claims (7)

1. a direct-current charging interface of electric automobile test system, it is characterised in that this direct-current charging interface of electric automobile is tested System includes testing system receptacle, test system plug, mode switching circuit, CAN test cell the 1, a 2nd CAN test list Unit 2, left normally opened relay group (k1-k9), right normally opened relay group (k10-k18), acquisition controlling plate and host computer constitute；Switch is patrolled Collect control module and mode switching circuit connects.
Direct-current charging interface of electric automobile test system the most according to claim 1, it is characterised in that described acquisition controlling plate Including switching logic control module, sampling resistor R1-R17, sampled point AD1-AD14, normal open switch S1-S4With direct voltage source U1- U5；Wherein R3And R17For high accuracy number potentiometer；This acquisition controlling plate be provided with pin 1.-), and and the normally opened relay in left and right Device group (k1-k18) corresponding connection；Wherein R3And R17For high accuracy number potentiometer, R1=R2=R3=20k Ω, R15=R16=R17 =20k Ω, R4--R14It is respectively 1k Ω, U1-U5It is 12V.
Direct-current charging interface of electric automobile test system the most according to claim 1, it is characterised in that described host computer is by void Intend BMS module, virtual off-board charger communication module, data acquisition module and data analysis and processing module to constitute, wherein, empty Intend BMS module and the k of left normally opened relay group4、k5Connect；Virtual off-board charger communication module and right normally opened relay group K14、k15Connect；Data acquisition module and data analysis and processing module connect；Data Analysis Services module connects first respectively CAN test cell 1 and the 2nd CAN test cell 2.
Direct-current charging interface of electric automobile test system the most according to claim 1, it is characterised in that described test system is inserted The electric automobile vehicle socket of seat and the off-board charger vehicle plug of correspondence and test system plug and correspondence has identical 9 contacts, 9 contacts be followed successively by from top to bottom DC source just (DC+), DC source negative (DC-), protective grounding (PE), Charging communication CAN_H (S+) and CAN_L (S-), the first charging connection confirmation (CC1), the second charging connection confirmation of communicating of charging (CC2), low pressure accessory power supply just (A+), low pressure accessory power supply bear (A-).
Direct-current charging interface of electric automobile test system the most according to claim 1, it is characterised in that described test pattern is cut Changing circuit and have two groups, left and right switching pin, 9, left side pin is with left normally opened relay group (k1-k9) together correspondence be connected to survey 9 contacts of test system socket；9 pins in the right are with right normally opened relay group (k18-k10) together correspondence be connected to test system 9 contacts of plug.
Direct-current charging interface of electric automobile test system the most according to claim 1, it is characterised in that described acquisition controlling plate It is provided with pinSampling resistor R1、R2、R3Be connected in series in pin 1. and pin 2. between, switch S1One end ground connection, separately One termination sampling resistor R1And R2Points of common connection, switch S2One end ground connection, another terminates sampling resistor R2And R3Public company Contact；Sampling resistor R4、R5With direct voltage source U1Pin it is connected to 3. and between ground after series connection；Sampling resistor R6One end ground connection, Another termination pins is 6.；Sampling resistor R7With direct voltage source U2Pin it is connected to 7. and between ground after series connection；Sampling resistor R8、 R9Pin it is connected to 8. and between ground after being connected in series；9. pin is connected to the ground and connects；10. pin is connected to the ground and connects；PinThrough opening Close S3With sampling resistor R10Parallel-connection structure and direct voltage source U3Ground connection after series connection；PinSampled resistance R12With unidirectional current Potential source U4Ground connection；Sampling resistor R13、R14With direct voltage source U5Pin it is connected to after series connectionAnd between ground；Sampling resistor R15、 R16、R17It is connected in series in pinAnd pinBetween, switch S4One end ground connection, another terminates sampling resistor R15And R17Public Junction point, switchs S5One end ground connection, another terminates sampling resistor R16And R17Points of common connection.
7. the direct-current charging interface of electric automobile test system described in a claim 1 is to direct-current charging interface of electric automobile Method of testing, it is characterised in that this method of testing is the method that direct-current charging interface of electric automobile is carried out accident analysis early warning, Specifically comprise the following steps that
1) according to off-board charger parameter to be measured: rated voltage, rated current；And electric automobile power battery group to be measured ginseng Number: rated voltage, battery capacity, peak power, is tested direct-current charging interface of electric automobile test system by host computer Parameter configuration: off-board charger rated output voltage to be measured and electric automobile power battery group electric pressure to be measured；And disconnect Mode switching circuit, enters the setup test stage；
2) k of left normally opened relay group is closed3, gather AD2Point current potential, if AD2Point current potential is 6V, off-board charging the most to be measured Rolling stock plug is connected normally with the protective grounding (PE) of test system receptacle；If AD2Point current potential is 12V, non-car the most to be measured Carry charger vehicle plug normal with test system receptacle protective grounding (PE) malunion, after having tested, disconnect left normally opened relay The k of device group3；
3) k of left normally opened relay group is closed6, gather AD5Point current potential, if AD5Point current potential is 4V, off-board charging the most to be measured With test system receptacle the first charging connection, rolling stock plug confirms that (CC1) is connected normally；If AD5Point current potential is 0V, then treat Survey off-board charger vehicle plug normal with first charging connection confirmation (CC1) malunion of test system receptacle, test The contact k of left normally opened relay group is kept after one-tenth6Guan Bi；
4) k of left normally opened relay group is closed8And k9, gather AD7Point current potential, if AD7Point current potential is 6V, the most to be measured off-board fills Motor vehicle plug is connected normally with test system receptacle low pressure accessory power supply just (A+) and low pressure accessory power supply negative (A-)；If AD5Point current potential is 0V, off-board charger vehicle plug the most to be measured with test system receptacle low pressure accessory power supply just (A+) and low Negative (A-) malunion of pressure accessory power supply is normal, disconnects the k of left normally opened relay group after having tested8And k9；
5) k of left normally opened relay group is closed7, gather AD6Point current potential, if AD6Point current potential is 6V, off-board charging the most to be measured With test system receptacle the second charging connection, rolling stock plug confirms that (CC2) is connected normally；If AD2Point current potential is 12V, then treat Surveying off-board charger vehicle plug and confirm that (CC2) malunion is normal with test system receptacle the second charging connection, test completes The k of rear disconnection left normally opened relay group7；
6) k of left normally opened relay group is closed4And k5, the virtual BMS module cycle send communication handshake message, with non-car to be measured After load charger controller completes communication handshake, the charge requirement communication message of simulation electric automobile BMS is sent out by virtual BMS module Give off-board charger controller to be measured, monitor the communication message in CAN, Jin Eryou by a CAN test cell 1 Data Analysis Services module evaluates communication message concordance and real-time, simultaneously by sampled point AD3And AD4Point current potential judges it Whether meet above earth potential less than 25V, AD3And AD4Between current potential less than the requirement of 0.5V, keep left normally opened relay after having tested The k of device group4And k5Guan Bi；Wherein, off-board charger controller is GB 18487.1-2015 " electric car conduction Charging System part 1: General Requirement " regulation in scheme B.1 shown in the intrinsic parts of off-board charger；
7) k of left normally opened relay group is closed1And k2, gather AD4Point current potential, if AD4Point current potential is nonzero value, non-car the most to be measured Carry charger vehicle plug to be connected normally with DC source just (DC+) and the DC source negative (DC-) of test system receptacle；If AD2Point current potential is 0V, off-board charger vehicle plug the most to be measured and DC source just (DC+) and the direct current of testing system receptacle Negative (DC-) malunion of power supply is normal, keeps the k of left normally opened relay group after having tested1And k2Guan Bi；
8) Guan Bi switch S1And S2, read the insulation in off-board charger controller communication message to be measured by virtual BMS module Fault alarm message, if Abnormal Insulation is reported to the police, off-board charging locomotive Insulation monitoring the most to be measured is normal；Different without insulation Often reporting to the police, off-board charging locomotive Insulation monitoring the most to be measured is abnormal, disconnects switch S after having tested1And S2, disconnect left normally opened The k of relay group1、k2、k4And k6；
9) k of right normally opened relay group is closed10And k11, disconnect switch S1, gather AD8Point current potential, if AD8Point current potential is non-zero Value, electric automobile vehicle socket the most to be measured is negative with the low pressure accessory power supply just (A+) of test system plug and low pressure accessory power supply (A-) connect normally；If AD5Point current potential is 0V, and electric automobile vehicle socket the most to be measured assists with the low pressure of test system plug Power supply just (A+) and negative (A-) malunion of low pressure accessory power supply are normal, Guan Bi switch S after having tested1, keep right normally opened relay The k of device group10And k11Guan Bi；
10) k of right normally opened relay group is closed16, gather AD13Point current potential, if AD2Point current potential is 6V, electric automobile the most to be measured Vehicle socket is connected normally with the protective grounding (PE) of test system plug；If AD2Point current potential is 0V, electric automobile the most to be measured Vehicle socket is normal with protective grounding (PE) malunion of test system plug, disconnects right normally opened relay group after having tested k16；
11) k of right normally opened relay group is closed13, gather AD10Point current potential, if AD10Point current potential is 6V, electric automobile the most to be measured With the first charging connection of test system plug, vehicle socket confirms that (CC1) is connected normally；If AD10Point current potential is 0V, then treat Survey electric automobile vehicle socket normal, after having tested with first charging connection confirmation (CC1) malunion of test system plug Disconnect the k of right normally opened relay group13；
12) k of right normally opened relay group is closed12, gather AD9Point current potential, if AD9Point current potential is 6V, electric automobile the most to be measured With the second charging connection of test system plug, socket confirms that (CC2) is connected normally；If AD9Point current potential is 0V, the most to be measured With the second charging connection of test system plug, electric automobile vehicle socket confirms that (CC2) malunion is normal, protect after having tested Hold the k of right normally opened relay group12Guan Bi；
13) k of right normally opened relay group is closed14And k15, the virtual off-board charger communication module cycle send communication handshake Message, after completing communication handshake with the BMS of electric automobile vehicle controller to be measured, simulates the reception of off-board charger controller and treats Survey the BMS charge requirement communication message of electric automobile vehicle controller, monitored the communication in CAN by CAN test cell 2 Message, and then evaluated communication message concordance and real-time by Data Analysis Services module, simultaneously by sampled point AD11And AD12 Point current potential judges whether it meets the requirements, and (above earth potential is less than 25V, AD3And AD4Between current potential less than 0.5V), guarantor after test Hold the k of right normally opened relay group14And k15Guan Bi；Wherein, electric automobile vehicle controller is GB 18487.1-2015 " electronic vapour Car conduction charging system part 1: General Requirement " regulation in scheme the intrinsic parts of B.1 electric automobile；
14) k of right normally opened relay group is closed17And k18, gather AD14Point current potential, if AD14Point current potential is nonzero value, the most to be measured Electric automobile vehicle socket is connected normally with DC source just (DC+) and the DC source negative (DC-) of test system plug；If AD2Point current potential is 0V, electric automobile vehicle socket the most to be measured and DC source just (DC+) and the DC source of testing system plug Negative (DC-) malunion is normal, keeps the k of right normally opened relay group after having tested17And k18Guan Bi；
15) Guan Bi switch S4And S5, read electric automobile BMS communication message to be measured by virtual off-board charger communication module In insulation fault warning message, if Abnormal Insulation is reported to the police, electric automobile insulation the most to be measured detection is normal；Without insulation Abnormal alarm, electric automobile insulation the most to be measured detection is abnormal, disconnects switch S after having tested4And S5, disconnect right normally opened relay The k of device group10、k12、k14、k15、k17And k18；
16) if the off-board charger each contact of vehicle plug to be measured and electric automobile vehicle socket to be measured each contact connecting test All normal, then closed mode switching circuit, make electric automobile to be measured complete normally to charge bootup process, surveyed by a CAN Examination unit 1 and the 2nd CAN test cell 2 monitor the communication message in CAN, gather charging communication CAN_H (S+) simultaneously To ground level, the electricity between CAN_L (S-) that ground level, charging communication CAN_H (S+) and charging are communicated of charging communication CAN_L (S-) The integrated communication performance of mean longitude Data Analysis Services post-evaluation CAN: total inorganic nitrogen, the message bit error rate, message concordance And message real-time performance.
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