CN110441625A - A kind of analog charge method in electric car EMC AC charging test - Google Patents
A kind of analog charge method in electric car EMC AC charging test Download PDFInfo
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- CN110441625A CN110441625A CN201910628049.4A CN201910628049A CN110441625A CN 110441625 A CN110441625 A CN 110441625A CN 201910628049 A CN201910628049 A CN 201910628049A CN 110441625 A CN110441625 A CN 110441625A
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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
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to the analog charge methods in a kind of electric car EMC AC charging test, it include: directly to connect the zero curve for the pipette tips that charge, firewire with the zero curve firewire of network voltage, and guarantee with power grid altogether, the CP signal of square-wave signal analog charge stake identical with CP signal dutyfactor is generated using signal generator, and the normal work of the firewire, zero curve, ground wire, CC, CP when CC signal pins ground connection can be realized electric vehicle alternating-current charging, guarantee that electric car can charge normal；When carrying out dark indoor charge test, in view of signal generator equally will affect test result as electrical equipment, signal generator is placed in outside darkroom, signal is small by photoelectric conversion decaying, the optical signal of no electromagnetic disturbance is transmitted, and is converted optical signals to electric signal transmission again using EMC special photoelectric converter at charging gun end and given vehicle control charging process.
Description
Technical field
The invention belongs to automotive EMC testing fields, and in particular to a kind of electric car charging EMC test survey
Method for testing.
Background technique
With the rapid development of electric car, electric car charging technique is also become increasingly popular.Electric car charging process is
A kind of power conversion process, should during can there are problems that many electromagnetic compatibilities (EMC), therefore in order to preferably assess electronic vapour
Electromagnetic disturbance and anti-electromagnetic interference capability during vehicle AC charging are needed using EMI (electromagnetic interference) measurement antenna and people
Work electric power network radiated, the test of conduction test and the anti-interference carried out using antenna or coupling device is to Vehicular charging process
In electromagnetic disturbance situation assessed.However it charges in current automobile charging electromagnetic compatibility test standard for charging pile etc.
Whether equipment participates in test, and there is no detailed requirements, when charging equipment is carried out together due to the switching tube and electricity in charging equipment
The presence of gas device can have many electromagnetism when charging carries out EMC test in alternating-current charging pile and in relevant charge cable
Noise is the emission source of very strong electromagnetic harassing and wrecking.Therefore it causes in many charging measurements due to alternating-current charging pile placement position
The phenomenon that reason causes harassing and wrecking source indefinite, and different placement position test results differ greatly.Simultaneously to charging equipment and electronic
When vehicle carries out immunity test together, there is a problem of that subjects are not unique, is lost when AC charging anti-interference test occurs
When losing, can not determine that vehicle end anti-interference ability is weak or charging equipment anti-interference ability is weak, easily to Vehicular charging when reality
Electromagnetic Compatibility causes the assessment of mistake.
Summary of the invention
The present invention is in view of the above problems, charge to electric vehicle when EMC is tested using a kind of analog charge system
Method.The present invention is simulated by the control signal that will be generated in charging equipment and analog machine is placed in experimental enviroment
Outside, keep test target unique, accurately to electric vehicle charging when Electro Magnetic Compatibility can be carried out assessment.Technical solution is as follows:
A kind of analog charge method in electric car EMC AC charging test, comprising:
The zero curve for the pipette tips that charge, firewire are directly connect with the zero curve firewire of network voltage, and guaranteed with power grid altogether, benefit
Generate the CP signal of identical with CP signal dutyfactor square-wave signal analog charge stake with signal generator, and by CC signal pins
The normal work of firewire, zero curve, ground wire, CC, CP when ground connection can be realized electric vehicle alternating-current charging, guarantees electric car energy
It charges normal；
When carrying out dark indoor charge test, it is contemplated that signal generator equally will affect test knot as electrical equipment
Signal generator is placed in outside darkroom by fruit, and signal is small by photoelectric conversion decaying, and the optical signal of no electromagnetic disturbance is passed
It is defeated, and convert optical signals to electric signal transmission again using EMC special photoelectric converter at charging gun end and charge to vehicle control
Process.
Charging current can be controlled by adjusting the CP signal dutyfactor that waveform generator issues, realize charging current
It is any to adjust, to meet the requirement under different charging current test conditions.
Beneficial effects of the present invention are as follows:
1) charging equipment has effectively been isolated when to electric vehicle alternating-current charging EMC test to Electromagnetic Interference Test
As a result influence, it is unique to realize measurand, only electric car.
2) it ensure that only have tested vehicle in experimental enviroment in vehicle AC charging electromagnetism anti-interference test, realize to vehicle
The reasonable assessment of AC charging electromagnetism anti-interference ability.
3) this method rationally effective simulating vehicle charged state can guarantee that vehicle is carried out with using AC charging equipment
State consistency when charging.
4) reduce because converting electrical signals to the optical signal test method because cable coupling reason signal wire ties test
Error caused by fruit.
5) the big minor adjustment to charging current in electric vehicle alternating-current charging test may be implemented in this method, improves test examination
The freedom tested.
Detailed description of the invention
Fig. 1 is the schematic diagram of analog charge method.
In figure, the firewire, zero curve and the ground wire that are connect when L, N, PE are AC charging respectively with power grid；CC is that charging connection is true
Recognize line with power grid to connect；CP is charge control line, and the signal of transmission is generated by the signal generation apparatus after photoelectric conversion
PWM wave；LISN is the artificial mains network needed when test；Darkroom is the dedicated semi-anechoic chamber of automotive EMC, can be with
For Electromagnetic Interference Test and the anti-interference test of electromagnetism.
Fig. 2 is the implementation flow chart of analog charge method.
Specific embodiment
Given vehicle alternating voltage is only needed when electric vehicle alternating-current charging state, has reconnected PE and connects CC (connection
Detection), CP (charge control) signal wire, guaranteeing that vehicle end and stake end are charged unimpeded can be such that electric car connect with power grid to be handed over
Current charge, wherein CC signal be only one be placed in charging pipette tips ohmically voltage value, for confirm charging gun whether with electricity
Electrical automobile connection, and its resistance and connection switch are arranged at charging pipette tips, therefore while testing, only needs will to charge the zero of pipette tips
Line, firewire are directly connect with the zero curve firewire of network voltage, and guarantee with power grid altogether, to generate using signal generator and believe with CP
The CP signal of number identical square-wave signal analog charge stake of duty ratio, and electric car is can be realized into CC signal pins ground connection and is handed over
The normal work of L (firewire), N (zero curve), PE (ground wire), CC, CP when current charge guarantee that electric car can charge normal.
When for dark indoor charge test, it is contemplated that signal generator equally will affect test knot as electrical equipment
Fruit needs for signal generator to be placed in outside darkroom, but if directly needing longer lines to exist using electric wiring transmission CP signal
Darkroom internal transmission signal, the too long signal circuit that will cause of cable is big, will form stronger electromagnetic radiation in darkroom.Therefore it selects
Select by signal by photoelectric conversion decay it is small, the optical signal of no electromagnetic disturbance is transmitted, and charging gun end use EMC it is special
It converts optical signals to electric signal transmission again with photoelectric converter and gives vehicle control charging process.Meanwhile the charging method can lead to
The CP signal dutyfactor control charging current for overregulating waveform generator sending, realizes any adjusting of charging current, comes
Meet the requirement under different charging current test conditions, so that the charging method, which has, is more widely applied range.
Test arrangement as shown in Figure 1, pass through artificial power net for the firewire L, zero curve N and ground wire PE of AC charging rifle respectively
Network (LISN) is connect with L, N and PE of the single-phase electricity of power grid afterwards.Then it is the port CC of pipette tips is hanging, it is to note that it is recommended that selection is exhausted
Edge object is blocked that electrical accidentally touching occurs.The end charging control signal line CP of pipette tips is connected to the output of photoelectric converter
Mouthful, while ensuring the PE of the ground terminal of the CP signal and power grid connection after photoelectric conversion, it is ensured that signal forming circuit recycles light
Fibre connects the input port of the photoelectric converter and the delivery outlet of another photoelectric converter, by the input of another photoelectric conversion and signal
Occurrence of equipment connection, it is to note that ensure that two photoelectric converter models match, guarantee that signal is undistorted；Ensure that photoelectric converter is symbol
EMC test requirements document is closed, with certain anti-interference ability simultaneously on the electromagnetic environment in test darkroom without influence.According to electronic vapour
Vehicle communications protocol, it is the PWM wave that+12V minimum voltage is -12V that wherein CP signal, which is the peak value of duty ratio 0.1 to 0.9, therefore is set
It sets signal generation apparatus and exports identical pwm signal.First charging pipette tips are carried out with electric car charging interface after CP signal is provided
Then connection is powered with power grid to vehicle, while the duty ratio of CP signal is according to needed for test again after the actuation of interior relay
Electric current is adjusted, such as using testing current equipment: current clamp, and carrying out observation in real time to charging current ensures to charge normally.
Confirmation vehicle can test arrangement after charging normal according to electromagnetic compatibility test and carry out charging electromagnetic performance test to vehicle, due to
The equipment such as signal source are not in test darkroom, can effectively ensure that measured target is only vehicle.
Claims (2)
1. a kind of analog charge method in electric car EMC AC charging test, comprising:
The zero curve for the pipette tips that charge, firewire are directly connect with the zero curve firewire of network voltage, and guarantee with power grid altogether, to utilize letter
Number generator generates the CP signal of square-wave signal analog charge stake identical with CP signal dutyfactor, and CC signal pins are grounded
The normal work of firewire, zero curve, ground wire, CC, CP when can be realized electric vehicle alternating-current charging guarantees that electric car can be normal
Charging.
When carrying out dark indoor charge test, it is contemplated that signal generator equally will affect test result as electrical equipment, will
Signal generator is placed in outside darkroom, and signal is small by photoelectric conversion decaying, and the optical signal of no electromagnetic disturbance is transmitted, and
Electric signal transmission is converted optical signals to again using EMC special photoelectric converter at charging gun end gives vehicle control charging process.
2. the analog charge method belonging to according to claim 1, which is characterized in that believed by adjusting the CP that waveform generator issues
Number duty ratio controls charging current, any adjusting of charging current is realized, to meet under different charging current test conditions
Requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910628049.4A CN110441625A (en) | 2019-07-12 | 2019-07-12 | A kind of analog charge method in electric car EMC AC charging test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910628049.4A CN110441625A (en) | 2019-07-12 | 2019-07-12 | A kind of analog charge method in electric car EMC AC charging test |
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| CN201910628049.4A Pending CN110441625A (en) | 2019-07-12 | 2019-07-12 | A kind of analog charge method in electric car EMC AC charging test |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474435A (en) * | 2020-04-28 | 2020-07-31 | 中国汽车技术研究中心有限公司 | System and method for testing alternating current charging electromagnetic interference of electric vehicle |
| CN113589069A (en) * | 2021-07-05 | 2021-11-02 | 一汽奔腾轿车有限公司 | Electromagnetic compatibility test system and test method for DC-DC (direct Current-direct Current) for automobile |
| CN114248644A (en) * | 2021-12-14 | 2022-03-29 | 奥尔托射频科技(上海)有限公司 | Charging pile intelligent interface device, installation method thereof and charging pile |
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| CN108646105A (en) * | 2018-02-11 | 2018-10-12 | 威凯检测技术有限公司 | Analog AC charging pile, Vehicular charger interact the equipment for realizing charging process test with BMS |
| CN108918993A (en) * | 2018-05-18 | 2018-11-30 | 上海埃德电子股份有限公司 | A kind of construction is novel and meets the Motor Measuring System of electromagnetic compatibility test index |
| CN209028143U (en) * | 2018-08-15 | 2019-06-25 | 东风汽车有限公司 | Electric vehicle alternating current charging test system |
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- 2019-07-12 CN CN201910628049.4A patent/CN110441625A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| CN105974236A (en) * | 2016-06-03 | 2016-09-28 | 广州市诚臻电子科技有限公司 | Motor loading and driving system used for electromagnetic compatibility test |
| CN108646105A (en) * | 2018-02-11 | 2018-10-12 | 威凯检测技术有限公司 | Analog AC charging pile, Vehicular charger interact the equipment for realizing charging process test with BMS |
| CN108918993A (en) * | 2018-05-18 | 2018-11-30 | 上海埃德电子股份有限公司 | A kind of construction is novel and meets the Motor Measuring System of electromagnetic compatibility test index |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474435A (en) * | 2020-04-28 | 2020-07-31 | 中国汽车技术研究中心有限公司 | System and method for testing alternating current charging electromagnetic interference of electric vehicle |
| CN111474435B (en) * | 2020-04-28 | 2024-07-12 | 中国汽车技术研究中心有限公司 | System and method for testing alternating-current charging electromagnetic interference of electric automobile |
| CN113589069A (en) * | 2021-07-05 | 2021-11-02 | 一汽奔腾轿车有限公司 | Electromagnetic compatibility test system and test method for DC-DC (direct Current-direct Current) for automobile |
| CN114248644A (en) * | 2021-12-14 | 2022-03-29 | 奥尔托射频科技(上海)有限公司 | Charging pile intelligent interface device, installation method thereof and charging pile |
| CN114248644B (en) * | 2021-12-14 | 2023-08-11 | 奥尔托射频科技(上海)有限公司 | Intelligent interface device of charging pile, mounting method of intelligent interface device and charging pile |
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Application publication date: 20191112 |