CN109116264A - Device and method for diagnosing charging pile fault - Google Patents
Device and method for diagnosing charging pile fault Download PDFInfo
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- CN109116264A CN109116264A CN201810793736.7A CN201810793736A CN109116264A CN 109116264 A CN109116264 A CN 109116264A CN 201810793736 A CN201810793736 A CN 201810793736A CN 109116264 A CN109116264 A CN 109116264A
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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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Abstract
The invention discloses a charging pile fault detection device, which comprises: the charging port is used for connecting a charging gun of the charging pile; a measuring unit for measuring charging data of the charging port; the main control unit is used for analyzing and processing the charging data to obtain a charging pile fault detection result; the main control unit is electrically connected with the charging port and the measuring unit respectively. In addition, the invention also provides a detection method of the charging pile fault detection device. The invention can solve the technical problem of field detection and diagnosis of the electric vehicle charging pile, thereby ensuring the charging pile to measure and charge accurately and providing reliable and safe charging service for the electric vehicle.
Description
Technical field
The present invention relates to intelligent charge technique fields, and in particular to a kind of device and side for diagnosing charging pile failure
Method.
Background technique
The current energy lack and the dual-pressure that gets worse of environmental pollution under, now each state all greatly develop it is electronic
Automobile.Country actively promotes development new energy in recent years, and electric car industry has obtained quick development.Currently, China is in electricity
Dynamic car, e-bus, electric vehicle system design and development, subsystem and components development, are shown energy storage device
Model operation and the various aspects such as standard formulation and research in policy all achieve many achievements.Charging pile is set as the charging of electric car
Standby, metering and billing accuracy, safety and reliability are directly related to reliability service and the development in an all-round way of electric car.Cause
This, how to ensure that charging pile metering and billing is accurate and provides reliable, safe charging service for electric car becomes currently
A great problem.In electric automobile charging pile on-site test problem, existing part company proposes the detection method of oneself, but
It is that effect is not ideal enough, technical solution is immature, and detection project is not comprehensive enough, lacks the detection to charging pile metering and billing, only
By the metering of electric energy meter, and detection device volume is also huger, not readily portable.
Summary of the invention
In view of this, the present invention is intended to provide a kind of charging pile fault detection means and method, are filled with solving electric car
The on-site test diagnostic techniques problem of electric stake, so that it is guaranteed that charging pile metering and billing it is accurate and for electric car provide reliably,
The charging service of safety.
For this purpose, first aspect present invention provides a kind of charging pile fault detection means, comprising:
Charge port, for connecting the charging gun of charging pile；
Measuring unit, for measuring the charge data of the charge port；
Main control unit handles the charge data for analyzing to obtain charging pile failure detection result；
The main control unit is electrically connected with the charge port, measuring unit respectively.
In some embodiments, the charge data includes current data and voltage data, the measuring unit include with
The current sensor and voltage sensor of charge cable electrical connection.
In some embodiments, described device further includes the communication interface for communicating to connect with charging pile electric energy meter, institute
State the energy data that device obtains electric energy meter by the communication interface；The main control unit is to electric energy meter number described in comparative analysis
According to the charge data, judge the accuracy of charging pile metering and billing.
In some embodiments, the electric energy of charging pile output is negative when the detection device further includes for consuming detection
It carries, the load is connect with the measuring unit, the electric energy that charging pile exports when being used to consume detection.
In some embodiments, the detection device further includes the display unit for showing analysis and processing result, described
Display unit is electrically connected with the main control unit.
Second aspect of the present invention provides a kind of detection method of charging pile fault detection means as described in relation to the first aspect, institute
The method of stating includes the following steps:
The charging gun of S100 charge port connection charging pile；
S200 measuring unit measures the charge data of the charge port；
S300 main control unit obtains the charge data, and analyzes the processing charge data and obtain charging pile fault detection
As a result.
In some embodiments, the step S200 further includes following sub-step:
Plug rifle detection；Pass through CC2 signal voltage value in detection charging gun cable；
Insulation monitoring；After charging gun connection, the voltage whether measurement charging gun issues is greater than 100V, the duration is greater than
1s is less than the pulse voltage of 30s；
It is connected under charging gun state and before not receiving CAN message BCL in charge port, detection charging pile relay is closed wink
Between be greater than 20A and duration with the presence or absence of electric current and greater than 1ms charge into dash current signal；
Charge rest-current fall rate detection；Detect charge port CC1 voltage value signal；
Charge rest-voltage decreasing rate detection；Detect charge port CC1 voltage value signal；
In some embodiments, the step S300 specifically further includes following sub-step:
According to CC2 signal voltage value 4V, determine that charging gun is otherwise the state of drawing guns for even gun shape state；
After charging gun connection, if the voltage that charging gun issues is greater than 100V, the duration is greater than the pulse that 1s is less than 30s
Voltage, main control unit determine that charging pile has Insulation monitoring, and on the contrary then naked detects, and reports failure；
It connects under charging gun state and before not receiving CAN message BCL in charge port, believes if there is dash current is charged into
Number, then determine that there are dash currents for the charging pile, and report failure；
In charging process, if detecting that CC1 changing value is greater than 0.7V, the detection of detection trigger electric current decrease speed determines,
If current value drops to 5A or less and the time is spent to be less than or equal to 100ms, determine that the charging pile current fall rate is normal,
Otherwise failure is reported.
In charging process, if detecting that CC1 changing value is greater than 0.7V, the detection of detection trigger voltage decrease speed determines,
If voltage value drops to 60V or less and the time is spent to be less than or equal to 200ms, the charging pile voltage decreasing rate is being determined just
Often, failure is otherwise reported.
In some embodiments, the step S300 further include: the main control unit obtains the electricity of the electric energy meter of charging pile
Can data and measuring unit measurement charge data, electric energy meter data and the charge data, utilization described in comparative analysis are differential
Protection philosophy judges the accuracy of metering and billing, and charging result is shown by display unit.
In some embodiments, the detection device further includes the display unit for showing analysis and processing result, described
Method is further comprising the steps of: display unit described in S400 obtains the charging pile failure detection result and is shown.
By above technical scheme, implements present invention method and its device has the following beneficial effects:
The detection device of the embodiment of the present invention is essentially an analogue battery equipment, is substituted using the analogue battery equipment
Electric car load, which, which had not only been able to achieve, allows charging pile to start charging process, but also can record the various skills in charging process
Art parameter, while the fault point in charging process is recorded during the charging process, facilitate the simulation test of charging pile, detection charging
Whether worked normally in stake charging process.It is this to integrate charging load simulation and the detection device of test process and can be used as
A kind of production test equipment of charging pile enterprise, its appearance can provide the production test efficiency of charging pile significantly.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is charging pile fault detection means structural schematic diagram described in the embodiment of the present invention；
Fig. 2 is charge port contact arrangement figure described in the embodiment of the present invention；
Fig. 3 is charging pile fault detection method flow chart described in the embodiment of the present invention；
Fig. 4 is the schematic diagram that charging pile detection device described in the embodiment of the present invention tests charging pile.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as specific device structure, technology etc is proposed
Body details understands the embodiment of the present invention to cut thoroughly.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known device, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, it is illustrated below by specific embodiment combination attached drawing.
A kind of charging pile fault detection means provided as shown in Figure 1 for first aspect present invention embodiment, comprising:
Charge port 1, for connecting the charging gun of charging pile；
Measuring unit 2, for measuring the charge data of the charge port 1；
Main control unit 3 handles the charge data for analyzing to obtain charging pile failure detection result；
The main control unit 3 is electrically connected with the charge port 1, measuring unit 2 respectively.
The present embodiment is using direct-current charging post as test object, specifically, the contact cloth of charge port 1 used in the present embodiment
It sets specific as shown in Fig. 2, using " GB/T20234.3 electric car conduction chargeable connection device third portion: DC charging connects
Mouthful " unified standard, the charge port 1 be a charging socket, the charging plug (i.e. charging gun) with charging pile being capable of complete coupling
It closes.Charging pile plug and socket during the connection process contact coupling sequence are as follows: protective grounding, DC power supply just, DC power supply
Negative, vehicle end connection confirmation, low pressure accessory power supply is just negative with low pressure accessory power supply, and charging communication connect confirmation with feeder ear；?
Then sequence is opposite during disengagement.
Specifically, the electrical parameters and its functional meaning of each contact of the charge port 1 are referring to table 1；
1 contact explanation of table 1- charge port
| DC+ | DC power supply+ | CC2 | Charging connection confirmation |
| DC- | DC power supply+ | CC1 | Charging connection confirmation |
| GND | Protecting field PE | ||
| S+ | CAN_H | A- | Low pressure accessory power supply- |
| S- | CAN_L | A+ | Low pressure accessory power supply+ |
The charging pile detection device based on electric car that the present embodiment proposes, by the battery management for simulating electric car
System (BMS) realizes connection and intelligence communication with charging pile system, and the charging for simulating live different Rechargeable vehicles needs
It asks, to detect the function and ability of charging pile, finds that charging pile scene uses defect early.
In some embodiments, the charge data includes current data and voltage data, the measuring unit 2 include with
The current sensor and voltage sensor of charge cable electrical connection.It, will be in charging process by current sensor, voltage sensor
Electric current, voltage signal are sent to high-speed collection card；It is acquired in charging process between charger and detection device by CAN communication card
Interaction CAN message；High-speed controller realizes that Current Voltage and CAN message information automatically analyze, automatically record and save data
Etc. functions.
In some embodiments, described device further includes the communication interface for communicating to connect with charging pile electric energy meter, institute
State the energy data that device obtains electric energy meter by the communication interface；The main control unit 3 is to electric energy meter described in comparative analysis
Data and the charge data, judge the accuracy of charging pile metering and billing.Specifically, the present embodiment detection device passes through
RS485 line is communicated with the electric energy meter of charging pile, reading power meters data, is carried out pair with the data of detection device self-metering
Than, the accuracy of metering and billing is judged using Differential Protection Theory, it further can also be single by display by charging result
Member 5 is shown.
In some embodiments, the load of the electric energy of charging pile output when the detection device further includes for consuming detection
4, the load 4 is connect with the measuring unit 2, the electric energy that charging pile exports when being used to consume detection.It fills currently on the market
The power of electric stake can reach 300KW, therefore the present embodiment detection device carries for the ease of field maintenance person, to institute's bringing onto load
4 are limited, and are achieved the purpose that reduce by 4 power of load by the way of current limliting, be filled when consuming detection with low power load 4
The electric energy of electric stake output, reduces equipment volume and weight to realize.
In some embodiments, the detection device further includes the display unit 5 for showing analysis and processing result, described
Display unit 5 is electrically connected with the main control unit 3.
Be illustrated in figure 3 second aspect of the present invention embodiment provides a kind of charging pile failure inspection as described in relation to the first aspect
The detection method of device is surveyed, described method includes following steps:
The charging gun of the connection charging pile of S100 charge port 1；
S200 measuring unit 2 measures the charge data of the charge port 1；
S300 main control unit 3 obtains the charge data, and analyzes the processing charge data and obtain the inspection of charging pile failure
Survey result.
Specifically, the present embodiment step S200-S300 includes following detection project:
(1) plug rifle detection: by CC2 signal voltage value in detection charging gun cable, if CC2 voltage value is sentenced in 4V
Charging gun is determined for even gun shape state, is otherwise the state of drawing guns.
(2) it voltage detecting: is coupled from the high direct voltage in charge cable by certain conversion proportion by voltage sensor
Output is less than the low pressure of 10V, to realize the detection to high pressure；
(3) current detecting: the cathode power supply line of charging cable is passed through into current sensor and is coupled by certain conversion proportion
Output is less than the low pressure of 4V, then electric current can be obtained by Ohm's law, to realize the detection to high current.
(4) Insulation monitoring: after rifle connection, charger should send a voltage greater than 100V, and the duration is greater than
1s is less than the pulse voltage of 30s, the Insulation monitoring voltage signal connecting as charging gun with electric vehicle.If there is the pulse voltage,
Then judge that charging pile has Insulation monitoring, on the contrary then naked detects, and reports failure.
(5) dash current detects: charging gun connects OK, before not receiving CAN message (charge requirement message) BCL, detection
Charging pile relay closure moment is greater than 20A and duration with the presence or absence of electric current and greater than 1ms charges into dash current signal, such as
Fruit then determines that there are dash currents for the charging pile there are this abnormal current signal, and reports failure.
(6) current following detects: charging gun connects OK, and after receiving CAN message BCL, actual current will be with 20A/s's
Speed responsive BCL demand, otherwise reports error code.
(7) charge rest-current fall rate detection: in charging process, if detecting that CC1 changing value is greater than 0.7V,
The detection of detection trigger electric current decrease speed determines, if current value drops to 5A or less and the time is spent to be less than or equal to 100ms,
Determine that the charging pile current fall rate is normal.Otherwise failure is reported.
(8) charge rest-voltage decreasing rate detection: in charging process, if detecting that CC1 changing value is greater than 0.7V,
The detection of detection trigger voltage decrease speed determines, if voltage value drops to 60V or less and the time is spent to be less than or equal to 200ms,
Then determine that the charging pile voltage decreasing rate is normal.Otherwise failure is reported.
(9) normal termination-current fall rate detection: normal termination charging, after receiving BST or CST end message, if
Electric current drops to 5A hereinafter, then determining that the charging pile current fall rate is normal with the rate of 50A/s.Otherwise failure is reported.
(10) normal termination-voltage decreasing rate detection: normal termination charging, after receiving BST or CST end message,
Drop to 60V in 3s if voltage hereinafter, if determine that the charging pile voltage decreasing rate is normal.Otherwise failure is reported.
In some embodiments, the step S300 further include: the main control unit 3 obtains the electricity of the electric energy meter of charging pile
Can the charge data that measures of data and measuring unit 2, electric energy meter data and the charge data, utilization described in comparative analysis are differential
Protection philosophy is shown charging result by display unit 5 to judge the accuracy of metering and billing.
In some embodiments, the detection device further includes the display unit 5 for showing analysis and processing result, described
Method is further comprising the steps of: display unit 5 described in S400 obtains the charging pile failure detection result and is shown.
Fig. 4 is the principle that charging pile detection device tests charging pile, in Fig. 4 right part generally to electric vehicle etc.
Effect replacement, the whole process of simulation electric car charging, to achieve the purpose that charging pile performance detection, below based on Fig. 4
The detection process of the embodiment of the present invention is described further:
(1) it first ensures that being reliably connected for detection device and charging pile, when debugging test, charging is carried out to charging pile and is set
It postpones, charging pile control device then judges that charging interface connects completely if CC1 voltage value is 4V by the voltage value of measurement CC1
It connects.
(2) after interface is fully connected, it is closed contactor K1 and K2, carries out Insulation monitoring；It is disconnected after the completion of Insulation monitoring
K1 and K2 separates IMD in a manner of physics from forceful electric power circuit, and puts into bleed-off circuit and let out to charging output voltage
It puts, after charging pile completes self-test, is closed contactor K3 and K4, low pressure auxiliary power supply circuit is connected, start simultaneously at period transmission
Communication handshake message.After obtaining the low pressure accessory power supply power supply of charging pile offer, detection device passes through the voltage value of measurement CC2
Judge whether charging interface has been fully connected.If the voltage value of CC2 is 6V, then control device starts period transmission communication handshake report
Text.
(3) detection device communicate that completion is shaken hands and with postponing, charging pile, which controls, to be filled with live charging pile control device
Closure contactor K5 and K6 are set, charge circuit is connected；Detection device judges detection dress by the voltage of detection institute's bringing onto load 4
Set whether inside contactor K5, K6 are closed.Charging pile control device detects that 4 voltage of detection device institute bringing onto load is normally closed afterwards
Contactor K1 and K2, are connected direct current power supply loop.
(4) in the charging stage, detection device sends charge requirement parameter, charging pile control to charging pile control device in real time
Parameter adjusts charging voltage and charging current to device in real time according to demand.After five minutes to be charged, charging pile charging is normal and examines
Survey device can real-time detection when arriving the parameters such as the output voltage of charging pile and electric current, the completion of entire detection process.Detection device
It is whether qualified that the charging pile is analyzed according to the data being collected into, and can be shown relevant information on display unit 5 if unqualified, be mentioned
The field adjustable maintenance personnel that wakes up carries out detection maintenance to charging pile.
(5) Each performs its own functions for modules inside detection device, and measuring unit 2 is connected with the power positive cathode in charge port 1,
The output voltage and electric current of direct-current charging post are measured, and gives measurement data to main control unit 3.The low pressure of charge port 1 assists electricity
Source is connected with measuring unit 2, provides low-voltage power supply, detects the stability of low-voltage power supply.The two of main control unit 3 and charge port 1
A charging communication interface communication, voltage, electric current and energy value are sent to main control unit 3 by charging pile CPU, with measuring unit 2
Data are compared, by data output on display unit 5.
It should be noted that the Installation practice of specific embodiment part is corresponding with embodiment of the method, therefore device is real
Explanation can be complementary to one another by applying example and embodiment of the method.
There is following beneficial effect it is found that implementing present invention method and its device by the description of above embodiments
Fruit:
The detection device of the embodiment of the present invention is adapted to charging pile field adjustable and detection, and it is existing to efficiently solve charging pile
Field debugging problem, while staff's later maintenance work can effectively be simplified by this detection device, it is the day of charging pile
Normal operation and maintenance and breakdown repair provide important detection device and support, reduce because ageing equipment brings failure in charging process
Loss, improve work efficiency and charge reliability.
The detection device of the embodiment of the present invention is essentially an analogue battery equipment, is substituted using the analogue battery equipment
Electric car load 4, which, which had not only been able to achieve, allows charging pile to start charging process, but also can record the various skills in charging process
Art parameter, while the fault point in charging process is recorded during the charging process, facilitate the simulation test of charging pile, detection charging
Whether worked normally in stake charging process.It is this to integrate the simulation of charging load 4 and the detection device of test process and make
For a kind of production test equipment of charging pile enterprise, its appearance can provide the production test efficiency of charging pile significantly.
Part undeployed in method and device in the embodiment of the present invention, can refer to the method and device of above embodiments
Corresponding part is no longer developed in details herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", specific examples or " some examples " etc. mean in conjunction with the embodiment or example describe specific features,
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Feature can be combined in any suitable manner in any one or more of the embodiments or examples.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein sequence shown or discussed can not be pressed,
Including according to related function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be by of the invention
Embodiment person of ordinary skill in the field is understood.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of charging pile fault detection means characterized by comprising
Charge port, for connecting the charging gun of charging pile；
Measuring unit, for measuring the charge data of the charge port；
Main control unit handles the charge data for analyzing to obtain charging pile failure detection result；
The main control unit is electrically connected with the charge port, measuring unit respectively.
2. charging pile fault detection means as described in claim 1, which is characterized in that the charge data includes current data
And voltage data, the measuring unit include the current sensor and voltage sensor being electrically connected with charge cable.
3. charging pile fault detection means as described in claim 1, which is characterized in that described device further include for charging
The communication interface of stake electric energy meter communication connection, described device obtain the energy data of electric energy meter by the communication interface；The master
Unit is controlled to electric energy meter data described in comparative analysis and the charge data, judges the accuracy of charging pile metering and billing.
4. charging pile fault detection means as described in claim 1, which is characterized in that the detection device further includes for disappearing
The load of the electric energy of charging pile output, the load connect with the measuring unit, fill when being used to consume detection when consumption detection
The electric energy of electric stake output.
5. charging pile fault detection means as described in claim 1, which is characterized in that the detection device further includes for showing
Show that the display unit of analysis and processing result, the display unit are electrically connected with the main control unit.
6. a kind of detection method of charging pile fault detection means as described in claim 1, which is characterized in that the method packet
Include following steps:
The charging gun of S100 charge port connection charging pile；
S200 measuring unit measures the charge data of the charge port；
S300 main control unit obtains the charge data, and analyzes the processing charge data and obtain charging pile fault detection knot
Fruit.
7. the detection method of charging pile fault detection means as claimed in claim 6, which is characterized in that the step S200 is also
Including following sub-step:
Plug rifle detection；Pass through CC2 signal voltage value in detection charging gun cable；
Insulation monitoring；After charging gun connection, the voltage whether measurement charging gun issues is small greater than 1s greater than 100V, duration
In the pulse voltage of 30s；
Under charge port connection charging gun state and before not receiving CAN message BCL, detection charging pile relay closure moment is
It is no to be greater than 20A and duration there are electric current and greater than 1ms charge into dash current signal；
Charge rest-current fall rate detection: detection charge port CC1 voltage value signal；
Charge rest-voltage decreasing rate detection: detection charge port CC1 voltage value signal.
8. the detection method of charging pile fault detection means as claimed in claim 7, which is characterized in that the step S300 tool
Body further includes following sub-step:
According to CC2 signal voltage value 4V, determine that charging gun is otherwise the state of drawing guns for even gun shape state；
After charging gun connection, if the voltage that charging gun issues is greater than 100V, the duration is greater than pulse electricity of the 1s less than 30s
Pressure, main control unit determine that charging pile has Insulation monitoring, and on the contrary then naked detects, and reports failure；
It is connected under charging gun state and before not receiving CAN message BCL in charge port, if there is charging into dash current signal,
Then determine that there are dash currents for the charging pile, and reports failure；
In charging process, if detecting that CC1 changing value is greater than 0.7V, the detection of detection trigger electric current decrease speed determines, if
Current value drops to 5A or less and the time is spent to be less than or equal to 100ms, then determines that the charging pile current fall rate is normal, otherwise
Report failure；
In charging process, if detecting that CC1 changing value is greater than 0.7V, the detection of detection trigger voltage decrease speed determines, if
Voltage value drops to 60V or less and the time is spent to be less than or equal to 200ms, then determines that the charging pile voltage decreasing rate is normal, no
Then report failure.
9. the detection method of charging pile fault detection means as claimed in claim 6, which is characterized in that the step S300 is also
It include: the energy data for the electric energy meter that the main control unit obtains charging pile and the charge data of measuring unit measurement, to score
The electric energy meter data and the charge data are analysed, the accuracy of metering and billing is judged using Differential Protection Theory, and will meter
Take result to show by display unit.
10. the detection method of charging pile fault detection means as claimed in claim 6, which is characterized in that the detection device
It further include the display unit for showing analysis and processing result, the method also includes following steps: display unit described in S400
It obtains the charging pile failure detection result and is shown.
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| CN201810793736.7A CN109116264A (en) | 2018-07-19 | 2018-07-19 | Device and method for diagnosing charging pile fault |
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| CN201810793736.7A CN109116264A (en) | 2018-07-19 | 2018-07-19 | Device and method for diagnosing charging pile fault |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109969020A (en) * | 2019-05-10 | 2019-07-05 | 四川蔚宇电气有限责任公司 | DC charging rifle and its charging pile with monitoring module |
| CN111505430A (en) * | 2020-06-09 | 2020-08-07 | 云南电网有限责任公司电力科学研究院 | Charging data recording method and recorder for electric vehicle charging pile |
| CN111722021A (en) * | 2019-03-19 | 2020-09-29 | 深圳市星恒通设备有限公司 | Electric motor car electromagnetic radiation and charging seat insulation resistance detecting system |
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|---|---|---|---|---|
| CN111722021A (en) * | 2019-03-19 | 2020-09-29 | 深圳市星恒通设备有限公司 | Electric motor car electromagnetic radiation and charging seat insulation resistance detecting system |
| CN109969020A (en) * | 2019-05-10 | 2019-07-05 | 四川蔚宇电气有限责任公司 | DC charging rifle and its charging pile with monitoring module |
| JP2021082585A (en) * | 2019-11-14 | 2021-05-27 | ノイトリーク・アクティエンゲゼルシャフト | Contact carrier for electrical plug connector and plug connector thereof |
| JP7478081B2 (en) | 2019-11-14 | 2024-05-02 | ノイトリーク・アクティエンゲゼルシャフト | Contact carrier for electrical plug connector and plug connector thereof |
| CN113759183B (en) * | 2020-06-02 | 2024-05-28 | 浙江安吉智电控股有限公司 | Self-checking method, device and computer storage medium |
| CN113759183A (en) * | 2020-06-02 | 2021-12-07 | 车主邦（北京）科技有限公司 | Self-checking method, device and computer storage medium |
| CN111505430B (en) * | 2020-06-09 | 2022-06-07 | 云南电网有限责任公司电力科学研究院 | Charging data recording method and recorder for electric vehicle charging pile |
| CN111505430A (en) * | 2020-06-09 | 2020-08-07 | 云南电网有限责任公司电力科学研究院 | Charging data recording method and recorder for electric vehicle charging pile |
| CN111751686B (en) * | 2020-07-08 | 2022-11-18 | 中国第一汽车股份有限公司 | Method and device for detecting insulation fault of electric automobile |
| CN111751686A (en) * | 2020-07-08 | 2020-10-09 | 中国第一汽车股份有限公司 | Method and device for detecting insulation fault of electric automobile |
| CN111823920A (en) * | 2020-07-31 | 2020-10-27 | 中国汽车工程研究院股份有限公司 | Method for monitoring health state of charging pile by using vehicle charging data |
| CN112810475A (en) * | 2021-02-03 | 2021-05-18 | 阳光电源股份有限公司 | Charging gun interface equipment and charging pile control method |
| CN115207994A (en) * | 2021-04-12 | 2022-10-18 | 北汽福田汽车股份有限公司 | Safety fault identification method and device, storage medium and battery management system |
| CN114394006A (en) * | 2022-02-11 | 2022-04-26 | 湖北德普电气股份有限公司 | New energy automobile charging fault rapid diagnosis method |
| CN114394006B (en) * | 2022-02-11 | 2024-01-30 | 湖北德普电气股份有限公司 | New energy automobile charging fault rapid diagnosis method |
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