CN112782636A - Charging pile online metering calibration verification method and system - Google Patents
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Abstract
A charging pile on-line metering calibration verification method and a system belong to the technical field of on-line metering calibration, and solve the problems of long detection time, low efficiency, more required detection equipment and high cost of a charging pile in the prior art.
Description
Technical Field
The invention belongs to the technical field of online metering calibration, and relates to a charging pile online metering calibration verification method and system.
Background
With the gradual popularization of electric automobiles, China has become the largest electric automobile-holding country all over the world, and the charging requirements of electric automobiles are greatly improved. Except that a part of electric public transport buses are provided with a special charging station and a part of private cars with private charging potentials, most private electric cars, net appointment cars using pure electric vehicles and taxies in the very big cities of the north, the wide and deep cities, all need to be charged to an open public charging station, a large number of charging transaction behaviors exist, and charging piles are used as metering basis functions of charging transactions and are amplified to a very important position.
The charging pile is rapidly developed in China, but the charging pile lacks related product technical specifications, the measurement requirement is relatively few, a plurality of charging pile manufacturing enterprises and operators do not understand or intentionally do hands and feet on the measurement, and a plurality of electric losses which are not born by consumers are calculated to the consumers, or the crisp measurement is the expense of a plurality of consumers with problems. At present, because the number of charging electricity measured by a charging pile is different from the number of charging electricity rushed into a vehicle logo, the processing and intervention of a quality inspection department are searched.
For the situations, the national quality control administration issues JJJG 1048-2018 verification rules of electric vehicle alternating current charging piles and JJG1049-2018 verification rules of electric vehicle off-board chargers in 2018 respectively, provides basis for metering requirements of the electric vehicle charging piles, and also provides that the metering calibration verification period of the charging piles is one year.
At present, according to above-mentioned metrological verification regulation, each local quality control department has begun to develop the metrological calibration verification work that the stake was filled in public operation, but at present most verification work all adopts on-vehicle external power supply and load, fills the mode that the stake detected the measurement accuracy of filling the stake through the cluster, implements and gets up a lot of problems: on the one hand, the equipment purchase amount of the mobile detection vehicle is huge, the detection time of a single equipment is often more than one hour and two hours, and if the detection number of coverage is guaranteed, the equipment purchase is extremely huge. On the other hand, because single detection is offline, only one station can be used for testing one station, the consumption of personnel and vehicles is high, and the efficiency is difficult to have a space for improving. Finally, since the certification period is set to one year in order to guarantee the consumer's consumption rights, the consumption of social resources will be continuous from cycle to cycle.
In the prior art, a document "charging facility remote measurement management system" (a scientific research institute of metering, anhui, and the like) published in 8 months in 2018 discloses a charging facility remote measurement system, and although the technical scheme claims to realize high automation of the remote calibration process and reduce calibration time and cost, the above problems still exist.
Disclosure of Invention
The invention aims to solve the problems of long detection time, low efficiency, more detection equipment and high cost of the charging pile in the prior art.
The invention solves the technical problems through the following technical scheme:
an online metering, calibrating and calibrating method for a charging pile comprises the following steps:
step 1: a charging calibration module is configured, and the configuration process comprises calibration and code generation;
step 2: installing the configured charging calibration module in the charging pile, connecting the charging calibration module with an online metering calibration verification system platform, enabling the charging calibration module to be online, and pasting a two-dimensional code picture corresponding to the charging calibration module at the man-machine interaction position outside the charging pile after the charging calibration module is successfully online;
and step 3: the charging calibration module sends a link maintenance heartbeat message according to a period and keeps the online metering calibration system platform in a connected online state;
and 4, step 4: when the user electric automobile is charged, the charging calibration module detects voltage and current signals of the charging gun side, and starts to record and accumulate charging electric quantity;
and 5: after the user finishes primary charging, the charging calibration module detects that the voltage and current signals disappear simultaneously, a primary charging order is finished, and charging record information is uploaded to an online metering calibration verification system platform;
step 6: after receiving the charging record information, the online metrological calibration verification system platform generates a charging order and stores the charging order in a database system;
and 7: and the user opens the WeChat applet client, scans the two-dimensional code pasted on the outer side of the charging pile, inquires the latest charging order, compares the latest charging order with the actual settlement information of the charging pile to determine whether an error exists or not, and realizes public supervision.
According to the technical scheme, the corresponding charging calibration module is installed in the direct current charging pile or the alternating current charging pile, the online metering calibration verification system platform is installed in the remote system, and the charging quantity is safely and transparently charged to achieve the purpose of public supervision, the working pressure of metering law enforcement departments is reduced, meanwhile, the purchase of related equipment can be reduced, and social resources are saved.
As a further improvement of the technical solution of the present invention, the method for configuring the charging calibration module in step 1 includes:
1) detecting whether the metering precision of the charging calibration module meets a set precision threshold value or not;
2) if the metering precision of the charging calibration module does not meet the precision requirement, calibrating the metering precision of the charging calibration module until the metering precision meets the precision requirement;
3) if the metering precision of the charging calibration module meets the precision requirement, the charging calibration module generates a unique code, a two-dimensional code is correspondingly generated according to the unique code, and the two-dimensional code information is recorded into the online metering calibration verification system platform.
As a further improvement of the technical solution of the present invention, the method for connecting the online metrological calibration verification system platform in step 2 to enable the charging calibration module to be online includes:
a) after a sim card is installed on a charging calibration module, network parameters are configured, and a connection request is sent;
b) after the online metrological calibration verification system platform receives the connection request, checking whether the two-dimensional code coding information of the charging calibration module in the connection request exists, if so, replying confirmation to enable the charging calibration module to be online, and if not, refusing to enable the charging calibration module to be online.
As a further improvement of the technical solution of the present invention, the format of the charging order in step 6 includes: order serial number, module code, charging electric quantity, charging starting time and charging ending time.
The charging calibration module is installed in the charging pile as a Client, the online metering calibration system platform is realized by adopting a C/S (Client/Server) -based framework, online metering calibration verification software is installed in a main Server in the online metering calibration system platform as a Server, and the wechat applet Client is used for sending a request for inquiring metering watt-hour data and receiving corresponding metering watt-hour data.
As a further improvement of the technical scheme of the invention, the charging calibration module comprises a 4G wireless transmission module, a main control CPU module, a metering chip module, a power supply, a current transformer and a voltage sampling unit; the power supply is respectively connected with the 4G wireless transmission module, the master control CPU module and the metering chip module, the G wireless transmission module, the master control CPU module and the metering chip module are sequentially connected in series, and the current transformer and the voltage sampling unit are respectively connected with the metering chip module.
As a further improvement of the technical solution of the present invention, the platform of the online metrological calibration verification system comprises: the system comprises a communication front-end module, a database system module and a WeChat small program server; the communication preposition module is used for processing the connection request, link maintenance and active reporting of charging record data of the charging calibration module; the database system module is matched with the communication preposed thread to record the charging order information of the corresponding charging calibration module; the wechat small program server is used for inquiring the metering electric power data uploaded by the corresponding charging calibration module according to the service request of the wechat small program client, and sending the inquired metering electric power data to the wechat small program client.
As a further improvement of the technical scheme of the invention, a sim card is installed in the 4G wireless transmission module, and the sim card adopts an N720-100PIN-LGA chip.
As a further improvement of the technical scheme of the invention, the main control CPU module adopts an STM32F207-LQFP100 chip.
As a further improvement of the technical scheme of the invention, the metering chip module adopts a metering chip CS5480 which can collect alternating current signals and direct current signals.
The invention has the advantages that:
according to the technical scheme, the corresponding charging calibration module is installed in the direct current charging pile or the alternating current charging pile, the online metering calibration verification system platform is installed in the remote system, and the charging quantity is safely and transparently charged to achieve the purpose of public supervision, the working pressure of metering law enforcement departments is reduced, meanwhile, the purchase of related equipment can be reduced, and social resources are saved.
Drawings
Fig. 1 is a schematic structural diagram of a charging pile online metering calibration verification system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a charging calibration module according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an on-line metrological calibration verification system platform according to an embodiment of the present invention;
FIG. 4 is a flow chart of a configuration of a charging calibration module before issue according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating operation of a charge calibration module according to an embodiment of the present invention;
fig. 6(a) is a flow chart of link channel establishment of an online metrological calibration verification system platform according to an embodiment of the present invention;
fig. 6(b) is a data message processing flow chart of an online metrological calibration verification system platform according to an embodiment of the present invention;
fig. 6(c) is a flow chart of data processing of the platform of the on-line metrological calibration verification system according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is further described by combining the drawings and the specific embodiments in the specification:
example one
As shown in fig. 1, an online metrological calibration verification system for a charging pile includes a charging calibration module, an online metrological calibration verification system platform, and a wechat applet Client, where the charging calibration module is installed in the charging pile as a Client, the online metrological calibration verification system platform is implemented by using a C/S-based architecture, online metrological calibration verification software is installed in a main Server in the online metrological calibration verification system platform as a Server, and the wechat applet Client is configured to send a request for querying metrological data and receive corresponding metrological data.
As shown in fig. 2, the charging calibration module includes a 4G wireless transmission module, a main control CPU module, a metering chip module, a power supply, a current transformer, and a voltage sampling unit; the power supply is respectively connected with the 4G wireless transmission module, the master control CPU module and the metering chip module, the G wireless transmission module, the master control CPU module and the metering chip module are sequentially connected in series, and the current transformer and the voltage sampling unit are respectively connected with the metering chip module.
The calibration module that charges divide into direct current calibration module and the calibration module that charges of alternating current, the direct current calibration module that charges and the place that the calibration module that charges of alternating current is different lies in the input voltage electric current of sampling part different, direct current calibration module that charges samples is the direct current voltage and the direct current that fill electric pile muzzle wiring, alternating current module that charges samples is the alternating current voltage and the alternating current that fill electric pile muzzle wiring, wherein current sampling passes through current transformer and realizes, the wiring adopts the current mode of wearing to the heart, convenient dismantlement, disposable theftproof seal design has, can be retrieved the calibration. Voltage sampling is realized by connecting divider resistors in series; the power supply of the direct current charging calibration module is supplied by universal 24V voltage in the charging pile, and the alternating current charging calibration module is supplied by 220V alternating current in the charging pile.
The main control CPU module adopts an STM32F207-LQFP100 chip to realize the acquisition and statistical uploading of metering data; the metering chip module adopts a metering chip CS5480 capable of collecting alternating current signals and direct current signals, and is used for collecting current and voltage flowing through a charging gun during charging, and recording and accumulating electric quantity; the 4G wireless transmission module is internally provided with a sim card, and the sim card adopts an N720-100PIN-LGA chip to realize interaction between the data of the charging calibration module and the platform of the online metering calibration verification system.
As shown in fig. 3, the on-line metrological calibration verification system platform includes: the system comprises a communication front-end module, a database system module and a WeChat small program server; the communication preposition module is used for processing the connection request, link maintenance and active reporting of charging record data of the charging calibration module; the database system module is matched with the communication preposed thread to record the charging order information of the corresponding charging calibration module; the wechat small program server is used for inquiring the metering electric power data uploaded by the corresponding charging calibration module according to the service request of the wechat small program client, and sending the inquired metering electric power data to the wechat small program client.
The charging calibration module is configured before being installed and issued by quality control departments, after configuration is successful, the precision of the charging calibration module reaches 0.2%, the charging calibration module generates a unique code N, the two-dimensional code generation and the charging calibration module correspond to each other one by one, meanwhile, a two-dimensional code picture of the code N is generated, and the code N is stored in a database system module of the online metering calibration verification system platform. The method comprises the steps that a configured charging calibration module is installed in a direct current (alternating current) charging pile in a charging pile operation station, sampling voltage and current are obtained from muzzle output voltage and current of the charging pile and are inserted into a sim card to a 4G module, local network parameters of the module and remote system network parameters of an online metering calibration verification system platform are configured, the charging calibration module is online, and a paired two-dimensional code picture is attached to a charging pile shell man-machine interaction position.
The method for the online metering, calibrating and verifying system of the charging pile comprises the following steps:
(1) the charging calibration module can be issued after configuration is carried out, the configuration comprises calibration and code generation, the calibration is to calibrate whether the metering precision of the charging calibration module meets the requirement of 0.2% through a platform body, namely, a calibration seal is put on, then, a unique code of the module and a two-dimensional code picture corresponding to the code are generated, and code information is recorded into an online metering calibration verification system platform.
(2) The configured charging calibration module is installed in the charging pile, for removing the influence of power consumption of the charging pile on charging transaction records, sampling signals are obtained from the outlet side of a charging gun of the charging pile, the direct-current charging pile is provided with the direct-current charging calibration module, and the alternating-current charging pile is provided with the alternating-current charging calibration module. And installing a sim card for the module 4G wireless transmission module, configuring an online metering calibration verification system platform with network parameters connected with a remote system, checking whether module coding information in a connection request exists after the system platform receives the connection request, replying confirmation if the module coding information exists, enabling the module to be on-line, and refusing the module to be on-line if the module coding information does not exist. And after the online is successful, pasting a two-dimensional code picture of the charging calibration module installed in the pile near the man-machine interaction outside the installation charging pile.
(3) When the system runs normally, the charging calibration module sends periodic maintenance heartbeat message to keep the system platform connected with the online metering calibration system platform on line.
(4) When a user pulls out a gun and inserts an electric automobile for charging, the charging calibration module detects that voltage and current signals exist on the charging gun side, and the electric quantity is recorded and accumulated through the metering module.
(5) After the user finishes charging once, the charging calibration module detects that the voltage signal and the current signal disappear simultaneously, the charging order is considered to be finished once, and the charging record information including the charging electric quantity is uploaded to the online metering calibration verification system platform.
(6) And after receiving the charging record information, the online metrological calibration verification system platform generates charging order record information and stores the charging order record information into the database system, wherein the charging order record information consists of an order serial number, a module code, charging electric quantity, charging start time and charging end time.
(7) The user opens the mobile phone wechat small program client software, scans the two-dimensional code pasted on the outer side of the charging pile, inquires the latest charging order information through a wechat small program server of the online metering calibration verification system platform, compares the latest charging order information with the actual settlement information of the charging pile, and can call a quality control department to complain if a larger error exists, so that the purpose of public supervision is achieved.
(8) Referring to the standard of the multifunctional intelligent electric meter, the charging calibration module can be replaced and calibrated once in 6 years, and the closed loop of metering calibration is realized.
As shown in fig. 4, the method for configuring the charging calibration module includes:
1) detecting whether the metering precision of the charging calibration module meets a set precision threshold value or not;
2) if the metering precision of the charging calibration module does not meet the precision requirement, calibrating the metering precision of the charging calibration module until the metering precision meets the precision requirement;
3) if the metering precision of the charging calibration module meets the precision requirement, the charging calibration module generates a unique code, a two-dimensional code is correspondingly generated according to the unique code, and the two-dimensional code information is recorded into the online metering calibration verification system platform.
As shown in fig. 5, the charging calibration module has the following working procedures:
1) during the idle period, sending a link maintenance heartbeat message according to a heartbeat period T,
2) when a user charges in a charging pile operating station, the charging calibration module determines the completion of a primary charging process by detecting the change of the muzzle voltage V and the muzzle current I and matching with the displacement information of the charging mark Fcharging,
3) after the charging is finished, recording the charging electric quantity of the current charging as Qend-Qstart, the charging start time Tstart and the charging end time Tend, forming a data field of a charging record report message by adding the module code N, and sending the data field to an online metering calibration verification system platform.
As shown in fig. 6(a) -6(c), the work flow of the on-line metrological calibration verification system platform is as follows:
as shown in fig. 6(a), a link channel is established for each charging calibration module configured with network parameters, and after the link channel is established, data communication with the charging calibration module is realized in the channel.
As shown in fig. 6(b), the data message processing is performed by first performing code recognition on a received message, checking whether a module code N in a message data field exists in a database, if so, judging that the module is legal, subsequently processing a link maintenance heartbeat message and a charging record report message of the module, storing the charging electric quantity in the charging record report message data field as Qend-Qstart, a charging start time Tstart and a charging end time Tend, and storing the module code N and an order number into a charging order record information table in the database.
After the user finishes charging and the charge is settled, a WeChat small program is opened to scan a two-dimensional code attached to the shell of a charging pile for charging, after the code is scanned, the WeChat small program sends a charging record query request containing information N of the two-dimensional code to an online metering calibration verification system platform, the processing flow of the platform is shown in figure 6(c), after the WeChat small program service end in the platform receives the query request, whether the code N exists in a database or not is compared, if the code N exists, the code N is considered to be legal query, the latest charging record with the module code N in a charging order record information table in the platform database is returned to the mobile phone end of the user, the user compares the charging electric quantity in the charging record with the charging electric quantity given by a charging pile operator for settlement, safe and transparent consumption and social public supervision are realized, and the rights of consumers are protected.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The charging pile online metering calibration verification method is characterized by comprising the following steps of:
step 1: a charging calibration module is configured, and the configuration process comprises calibration and code generation;
step 2: installing the configured charging calibration module in the charging pile, connecting the charging calibration module with an online metering calibration verification system platform, enabling the charging calibration module to be online, and pasting a two-dimensional code picture corresponding to the charging calibration module at the man-machine interaction position outside the charging pile after the charging calibration module is successfully online;
and step 3: the charging calibration module sends a link maintenance heartbeat message according to a period and keeps the online metering calibration system platform in a connected online state;
and 4, step 4: when the user electric automobile is charged, the charging calibration module detects voltage and current signals of the charging gun side, and starts to record and accumulate charging electric quantity;
and 5: after the user finishes primary charging, the charging calibration module detects that the voltage and current signals disappear simultaneously, a primary charging order is finished, and charging record information is uploaded to an online metering calibration verification system platform;
step 6: after receiving the charging record information, the online metrological calibration verification system platform generates a charging order and stores the charging order in a database system;
and 7: and the user opens the WeChat applet client, scans the two-dimensional code pasted on the outer side of the charging pile, inquires the latest charging order, compares the latest charging order with the actual settlement information of the charging pile to determine whether an error exists or not, and realizes public supervision.
2. The verification method for online metrological calibration of the charging pile according to claim 1, wherein the method for configuring the charging calibration module in the step 1 comprises the following steps:
1) detecting whether the metering precision of the charging calibration module meets a set precision threshold value or not;
2) if the metering precision of the charging calibration module does not meet the precision requirement, calibrating the metering precision of the charging calibration module until the metering precision meets the precision requirement;
3) if the metering precision of the charging calibration module meets the precision requirement, the charging calibration module generates a unique code, a two-dimensional code is correspondingly generated according to the unique code, and the two-dimensional code information is recorded into the online metering calibration verification system platform.
3. The charging pile online metrological calibration verification method according to claim 1, wherein the online metrological calibration verification system platform is connected in step 2, so that the charging calibration module online method comprises:
a) after a sim card is installed on a charging calibration module, network parameters are configured, and a connection request is sent;
b) after the online metrological calibration verification system platform receives the connection request, checking whether the two-dimensional code coding information of the charging calibration module in the connection request exists, if so, replying confirmation to enable the charging calibration module to be online, and if not, refusing to enable the charging calibration module to be online.
4. The verification method for online metrological calibration of charging piles according to claim 1, wherein the format of the charging order in step 6 comprises: order serial number, module code, charging electric quantity, charging starting time and charging ending time.
5. The charging pile online metrological calibration verification system is characterized by comprising a charging calibration module, an online metrological calibration verification system platform and a wechat small program Client, wherein the charging calibration module is installed in a charging pile as a Client, the online metrological calibration verification system platform is realized based on a C/S (Client/Server) architecture, online metrological calibration verification software is installed in a main Server in the online metrological calibration verification system platform as a Server, and the wechat small program Client is used for sending a request for inquiring metrological electric power data and receiving corresponding metrological electric power data.
6. The charging pile online metering, calibrating and verifying system according to claim 5, wherein the charging calibrating module comprises a 4G wireless transmission module, a main control CPU module, a metering chip module, a power supply, a current transformer and a voltage sampling unit; the power supply is respectively connected with the 4G wireless transmission module, the master control CPU module and the metering chip module, the G wireless transmission module, the master control CPU module and the metering chip module are sequentially connected in series, and the current transformer and the voltage sampling unit are respectively connected with the metering chip module.
7. The charging pile online metrological calibration verification system as claimed in claim 5, wherein said online metrological calibration verification system platform comprises: the system comprises a communication front-end module, a database system module and a WeChat small program server; the communication preposition module is used for processing the connection request, link maintenance and active reporting of charging record data of the charging calibration module; the database system module is matched with the communication preposed thread to record the charging order information of the corresponding charging calibration module; the wechat small program server is used for inquiring the metering electric power data uploaded by the corresponding charging calibration module according to the service request of the wechat small program client, and sending the inquired metering electric power data to the wechat small program client.
8. The system according to claim 6, wherein a sim card is installed in the 4G wireless transmission module, and the sim card employs an N720-100PIN-LGA chip.
9. The charging pile online metering calibration verification system according to claim 6, wherein the main control CPU module adopts an STM32F207-LQFP100 chip.
10. The charging pile online metrological calibration verification system as claimed in claim 6, wherein the metering chip module adopts a metering chip CS5480 capable of collecting AC signals and DC signals.
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| CN113325361A (en) * | 2021-06-24 | 2021-08-31 | 重庆市计量质量检测研究院 | Fill long-range online calibrating device of electric pile based on 5G communication |
| CN113447846A (en) * | 2021-06-29 | 2021-09-28 | 国网北京市电力公司 | Charging pile testing device calibration system |
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| CN107253445A (en) * | 2017-05-24 | 2017-10-17 | 深圳市金威源科技股份有限公司 | A kind of self-service charging method of electric automobile and system |
| CN207817860U (en) * | 2018-02-05 | 2018-09-04 | 杭州快虎科技有限公司 | A kind of meterage intelligent charging spot |
| CN110027437A (en) * | 2019-03-19 | 2019-07-19 | 合肥学院 | Electric automobile charging pile on-line calibration system |
| CN110060462A (en) * | 2019-03-19 | 2019-07-26 | 合肥学院 | A kind of data collection system and data acquisition device based on charging pile on-line calibration |
| CN111612976A (en) * | 2020-03-30 | 2020-09-01 | 中国电力科学研究院有限公司 | Remote calibration method and system for electric vehicle charging pile |
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| CN113447846A (en) * | 2021-06-29 | 2021-09-28 | 国网北京市电力公司 | Charging pile testing device calibration system |
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