CN110780260A - System and method for checking electric energy error of direct current charger - Google Patents
System and method for checking electric energy error of direct current charger Download PDFInfo
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- CN110780260A CN110780260A CN201910995476.6A CN201910995476A CN110780260A CN 110780260 A CN110780260 A CN 110780260A CN 201910995476 A CN201910995476 A CN 201910995476A CN 110780260 A CN110780260 A CN 110780260A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
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Abstract
The invention discloses a system and a method for checking electric energy error of a direct current charger, which comprises the following steps: the calibration instrument is embedded in the charging gun and used for calculating the electric energy error of the direct-current charger according to the acquired electric energy pulse signal for charging the electric load and the measured electric energy pulse signal measured by a built-in electric energy meter of the direct-current charger and directly sending the electric energy error to the server when the current state of the wireless communication signal is stable; when the current state of the wireless communication signal is unstable, the electric energy error is sent to the mobile communication terminal; and the mobile communication terminal is used for receiving the electric energy error and sending the electric energy error to the server. The invention overcomes the problem that the charger is inconvenient in information transmission in severe environment, provides more possibilities for different outdoor environments such as a direct current charger installation site and the like, can meet the requirement of market development, and is easier to remotely monitor compared with the traditional online checking scheme by using the technical scheme.
Description
Technical Field
The invention relates to the technical field of on-site calibration of a direct current charger, in particular to a system and a method for calibrating an electric energy error of the direct current charger.
Background
With the development of times, electric automobiles are more and more widely used. Correspondingly, the charging station is rapidly constructed, and the installation of the charger is increased continuously. However, for the new product brought by the development of new energy, the field electric energy, charging and function tests of the charger are still incomplete.
The professional equipment that the scene was tested the machine that charges is the on-spot check gauge of machine that charges, and the on-spot check gauge of machine that charges is because need match with the machine that charges and the load case of waiting to examine, and the result in comparatively common on the market machine that charges on-the-spot check gauge all is the volume comparatively huge, and the structure is mostly the box, and the transport is inconvenient, and the rate of utilization is not high, and the site environment is complicated, damages easily, is unfavorable for the scene to detect and maintain the machine that charges.
Disclosure of Invention
The invention provides a system and a method for checking electric energy errors of a direct current charger, and aims to solve the problem of how to efficiently check the direct current charger.
In order to solve the above problem, according to an aspect of the present invention, there is provided a system for checking a power error of a dc charger, the system including:
the calibration instrument is embedded in the charging gun and used for calculating the electric energy error of the direct-current charger according to the acquired electric energy pulse signal for charging the electric load and the measured electric energy pulse signal measured by a built-in electric energy meter of the direct-current charger and directly sending the electric energy error to the server when the current state of the wireless communication signal is stable; when the current state of the wireless communication signal is unstable, the electric energy error is sent to the mobile communication terminal;
a server for receiving the power error;
and the mobile communication terminal is used for receiving the electric energy error and sending the electric energy error to the server.
Preferably, the calibrator comprises:
the electric energy metering module is connected with the electric energy pulse comparison module and is used for acquiring a standard electric energy pulse signal for charging the electric load;
the wireless pulse receiving module is connected with the electric energy pulse comparing module and is used for acquiring a measured electric energy pulse signal measured by a built-in electric energy meter of the direct current charger;
the electric energy pulse comparison module is connected with the main control module and used for calculating the electric energy error of the direct current charger according to the standard electric energy pulse signal and the measured electric energy pulse signal;
the main control module is used for directly sending the electric energy error to the server through the wireless module when the current state of the wireless communication signal is stable; and the power error is sent to the mobile communication terminal through the Bluetooth module when the current state of the wireless communication signal is unstable.
Preferably, the calibrator further comprises:
and the power supply module is connected with the main control module and used for providing electric energy support for the main control module when the calibrator is not supported by an external power supply, so that the main control module can send an electric energy error to the server.
Preferably, the calibrator further comprises:
the CAN communication module is connected to a CAN communication bus in a charging circuit between the direct current charger and the electric load, is connected with the main control module, and is used for sending the detected total electricity consumption and the detected total cost counted by the monitored direct current charger used by the electric load to the main control module;
the main control module is used for comparing the standard total power consumption sent by the electric energy metering module with the detected total power consumption to obtain an error value of the total power consumption; and calculating standard total cost according to the standard total power consumption, and comparing the detected total cost with the standard total cost to obtain an error value of the total cost.
Preferably, wherein the system further comprises:
and the wireless pulse transmitting unit is used for acquiring the measured electric energy pulse information measured by a built-in electric energy meter of the direct-current charger and sending the measured electric energy pulse information to the calibrator.
According to another aspect of the present invention, there is provided a method for checking a power error of a dc charger, the method including:
the calibration instrument calculates the electric energy error of the direct current charger according to the obtained electric energy pulse signal for charging the electric load and the measured electric energy pulse signal measured by a built-in electric energy meter of the direct current charger;
when the current wireless communication signal state is stable, the calibrator directly sends the electric energy error to the server;
and when the current state of the wireless communication signal is unstable, the calibrator sends the electric energy error to the mobile communication terminal, and the mobile communication terminal sends the electric energy error to the server.
Preferably, wherein the method comprises:
acquiring a standard electric energy pulse signal for charging an electric load by using an electric energy metering module of a calibrator;
acquiring a measured electric energy pulse signal measured by a built-in electric energy meter of the direct current charger by using a wireless pulse receiving module of the calibrator;
calculating the electric energy error of the direct current charger by using an electric energy pulse comparison module of the calibrator according to the standard electric energy pulse signal and the measured electric energy pulse signal;
when the current wireless communication signal state is stable, the main control module of the check meter directly sends the electric energy error to the server through the wireless module;
and when the current state of the wireless communication signal is unstable, the main control module of the check meter sends the electric energy error to the mobile communication terminal through the Bluetooth module.
Preferably, wherein the method further comprises:
when the calibrator is not supported by an external power supply, the power supply module is used for providing electric energy support for the main control module, so that the main control module can send electric energy errors to the server.
Preferably, wherein the method further comprises:
the CAN communication module sends the detected total power consumption and the detected total cost counted by the monitored direct current charger end used by the power load to the main control module;
the main control module compares the standard total power consumption sent by the electric energy metering module with the detected total power consumption to obtain an error value of the total power consumption;
and calculating standard total cost according to the standard total power consumption, and comparing the detected total cost with the standard total cost to obtain an error value of the total cost.
Preferably, wherein the method further comprises:
and acquiring the measured electric energy pulse information measured by a built-in electric energy meter of the direct current charger by using the wireless pulse transmitting unit, and transmitting the measured electric energy pulse information to the calibrator.
The invention provides a system and a method for checking electric energy error of a direct current charger, which comprises the following steps: the calibration instrument is embedded in the charging gun and used for calculating the electric energy error of the direct-current charger according to the acquired electric energy pulse signal for charging the electric load and the measured electric energy pulse signal measured by a built-in electric energy meter of the direct-current charger and directly sending the electric energy error to the server when the current state of the wireless communication signal is stable; when the current state of the wireless communication signal is unstable, the electric energy error is sent to the mobile communication terminal; and the mobile communication terminal is used for receiving the electric energy error and sending the electric energy error to the server. According to the invention, two schemes for transmitting data are designed according to the field environment, the problem that the charger is inconvenient in information transmission in severe environment is solved, more possibilities are provided for different outdoor environments such as the installation field of the direct current charger and the like, the requirements of market development are better met, and meanwhile, compared with the traditional online checking scheme, the technical scheme is easier to remotely monitor; compared with the universal gun head of the traditional charger, the charging gun has no special requirements, and is different only in the difference of the check meters, so that the batch manufacturing cost of the scheme is lower; the invention solves the problems that the field calibrator has a box structure, is large in size, inconvenient to carry, low in utilization rate and difficult to maintain.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
fig. 1 is a schematic structural diagram of a system 100 for checking a power error of a dc charger according to an embodiment of the present invention;
fig. 2 is a block diagram of a system for checking an electric energy error of a dc charger according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a configuration of a prover according to an embodiment of the invention; and
fig. 4 is a flowchart of a method 400 for checking a power error of a dc charger according to an embodiment of the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Fig. 1 is a schematic structural diagram of a system 100 for checking a power error of a dc charger according to an embodiment of the present invention. As shown in fig. 1, the system for checking the electric energy error of the dc charger according to the embodiment of the present invention can design two schemes for transmitting data according to the field environment, so as to overcome the problem of inconvenient information transmission of the charger in a severe environment, provide more possibilities for different outdoor environments such as the installation field of the dc charger, and the like, and be more suitable for the needs of market development, and meanwhile, compared with the conventional on-line checking scheme, the technical scheme of the present invention is easier to remotely monitor; compared with the universal gun head of the traditional charger, the charging gun has no special requirements, and is different only in the difference of the check meters, so that the batch manufacturing cost of the scheme is lower; the invention solves the problems that the field calibrator has a box structure, is large in size, inconvenient to carry, low in utilization rate and difficult to maintain. The system 100 for checking the electric energy error of the direct current charger provided by the embodiment of the invention comprises: a verifier 101, a mobile communication terminal 102, and a server 103.
Preferably, the calibrator 101 is embedded in the charging gun, and is configured to calculate an electric energy error of the dc charger according to the obtained electric energy pulse signal for charging the electric load and the measured electric energy pulse signal measured by a built-in electric energy meter of the dc charger, and directly send the electric energy error to the server when the current state of the wireless communication signal is stable; and when the current state of the wireless communication signal is unstable, transmitting the power error to the mobile communication terminal.
Preferably, the server 103 is configured to receive the power error.
Preferably, the mobile communication terminal 102 is configured to receive the power error and send the power error to a server.
Preferably, wherein the system further comprises: and the wireless pulse transmitting unit is used for acquiring the measured electric energy pulse information measured by a built-in electric energy meter of the direct-current charger and sending the measured electric energy pulse information to the calibrator.
Fig. 2 is a system block diagram for checking an electric energy error of a dc charger according to an embodiment of the present invention. As shown in fig. 2, in an embodiment of the present invention, a system for checking an electric energy error of a dc charger includes: the device comprises a direct current charger, a charging gun, a wireless pulse transmitting unit, a server and a mobile communication terminal.
The direct current charger is connected with the electric load through the charging gun, and one end of the charging gun connected with the direct current charger and one end of the charging gun connected with the electric load both accord with the relevant regulations of the national standard GB/T20234.3-2015 electric vehicle conduction charging connecting device part 3 direct current charging interface. The rifle that charges includes: the rifle plug and the rifle socket that charges, the rifle plug connection direct current that charges charge machine, the rifle socket connection power consumption load that charges, the check gauge is embedded to the rifle socket that charges in, the rate of utilization is high, small, light in weight, has replaced traditional direct current to fill electric pile verifying attachment bulky, and the scheme of independent design has promoted the portability and the ease for use of equipment by a wide margin.
The direct current charger is internally provided with a direct current electric energy meter, the wireless pulse transmitting unit captures a detected electric energy pulse signal of the charger in a photoelectric sampling or direct wiring mode, and the collected detected electric energy pulse signal is transmitted to the wireless pulse receiving module of the calibrator in a wireless communication mode.
In the implementation mode of the invention, the calibrator collects a standard electric energy pulse signal for charging an electric load, compares the standard electric energy pulse signal with a non-received measured electric energy pulse signal, calculates an electric energy error, transmits the calculated electric energy error according to different conditions of the environment where the charger is located, and transmits the calculated electric energy error to the server through the wireless module when the current wireless communication signal state of the calibrator is stable, thereby completing the field calibration of the charger; when the current wireless communication signal state of the calibrator is unstable, the Bluetooth module is started, the calculated electric energy error is transmitted to the mobile communication terminal through the Bluetooth module, the stable signal is obtained by changing the position of the mobile communication terminal, and therefore the electric energy error is transmitted to the server through the wireless module.
Preferably, the calibrator 101 includes: the device comprises an electric energy metering module, a wireless pulse receiving module, an electric energy pulse comparing module and a main control module.
Preferably, the electric energy metering module is connected with the electric energy pulse comparing module and is used for acquiring a standard electric energy pulse signal for charging the electric load.
Preferably, the wireless pulse receiving module is connected with the electric energy pulse comparing module and is used for acquiring a measured electric energy pulse signal measured by a built-in electric energy meter of the direct current charger.
Preferably, the electric energy pulse comparison module is connected to the main control module and is configured to calculate an electric energy error of the dc charger according to the standard electric energy pulse signal and the measured electric energy pulse signal.
Preferably, the main control module is configured to directly send the power error to the server through the wireless module when the current state of the wireless communication signal is stable; and the power error is sent to the mobile communication terminal through the Bluetooth module when the current state of the wireless communication signal is unstable.
Preferably, the calibrator further comprises:
and the power supply module is connected with the main control module and used for providing electric energy support for the main control module when the calibrator is not supported by an external power supply, so that the main control module can send an electric energy error to the server.
Preferably, the calibrator further comprises:
the CAN communication module is connected to a CAN communication bus in a charging circuit between the direct current charger and the electric load, is connected with the main control module, and is used for sending the detected total electricity consumption and the detected total cost counted by the monitored direct current charger used by the electric load to the main control module;
the main control module is used for comparing the standard total power consumption sent by the electric energy metering module with the detected total power consumption to obtain an error value of the total power consumption; and calculating standard total cost according to the standard total power consumption, and comparing the detected total cost with the standard total cost to obtain an error value of the total cost.
Fig. 3 is a schematic structural diagram of a calibrator according to an embodiment of the present invention. As shown in fig. 3, in an embodiment of the present invention, a prover includes: the device comprises an electric energy metering module, a wireless pulse receiving module, an electric energy pulse comparing module, an MCU (microprogrammed control unit) main control module, a CAN (controller area network) communication module, a voltage sampling module, a current sampling module, a Bluetooth module, a wireless module and a power supply module.
The electric energy metering module adopts ADE7753, and obtains a standard electric energy pulse signal according to the voltage sampling module and the current sampling module. The voltage sampling module selects a resistance voltage division network with 0.02% precision and 5ppm temperature coefficient to perform signal conditioning, the current sampling module adopts a zero magnetic flux current sensor of a broadband alternating current-direct current comparator technology, the rear end adopts a resistance with 0.02% precision and 5ppm temperature coefficient to perform sampling, and a current signal is converted into a voltage signal.
And the wireless pulse receiving module is connected with the electric energy pulse comparison module and used for acquiring a measured electric energy pulse signal measured by a built-in electric energy meter of the direct current charger according to the wireless pulse sending unit.
And the electric energy pulse comparison module is connected with the main control module and is used for calculating the electric energy error of the direct current charger according to the standard electric energy pulse signal and the measured electric energy pulse signal.
The MCU master control module adopts an ADSP-21483 chip, has strong calculation capability and can ensure that the accuracy of real-time measured electric energy parameters reaches 0.05 level, thereby increasing the measurement accuracy of electric energy error check.
CAN communication module adopts TCAN334GDR, is connected to the CAN communication bus in the charging circuit between machine and the power consumption load that charges on, CAN communication module CAN with the charger end statistics that the power consumption load that hears used to be surveyed total power consumption and to be sent to MCU host system by total expense, MCU host system compares the standard total power consumption that electric energy metering module sent with to be surveyed total power consumption and obtain total power consumption's error value, and MCU host system calculates through standard total power consumption and reachs standard total expense, MCU host system will be surveyed total expense and standard total expense and compare the error value that reachs the total expense.
The power supply module is used for providing electric energy for the calibrator, electricity is needed to be obtained from the detected charging equipment when the charging equipment is detected on site, after the charging equipment is powered off, the power supply module starts the built-in rechargeable battery, a certain time interval is set to wake up the MCU main control module to detect signals, the wireless module is controlled to be connected with the server, and all detection data are sent out.
The check meter is communicated with the server through the wireless module, and the communication content comprises parameter setting and measurement data returning. Before the check gauge measures a new charging pile, a detection task of the server is received through the wireless module, and the detection task comprises a measuring point name, a measuring point address, an asset number, a pulse constant and a number of turns of a to-be-detected charging pile electric energy meter, a real-time measuring data uploading interval, rate setting, time period setting and a date and time for changing the setting. After the check meter receives a new detection task, the electric vehicle is charged, the detection task is automatically executed, and if the abnormality such as incomplete detection within a specified time, obvious abnormal reminding (more out-of-tolerance) of detection data and the like occurs in the process, the abnormality is reminded to the server through the wireless module. If no abnormal condition occurs, the information is reported to the server in time after the detection is started, in the detection process and after the detection is finished. The check gauge executes single verification design, and the check can be stopped after the check is finished.
The wireless module can be any one or more of a Bluetooth module, a WiFi module, a 4G module and a 5G module.
The mobile communication terminal can be any one of a mobile phone, a notebook computer, a POS machine, a PAD, a vehicle-mounted computer and a Bluetooth gateway.
Specifically, the working principle is as follows: a direct current sampling module and a direct current voltage sampling module in the calibrator respectively collect instantaneous direct current signals and instantaneous direct current voltage signals on a charging circuit of an electric load supplied by a charger, the instantaneous direct current signals and the instantaneous direct current voltage signals are both transmitted to an electric energy metering module, and the instantaneous direct current signals and the instantaneous direct current voltage signals are both analog signals; the electric energy metering module processes the received instantaneous direct current signal and the instantaneous direct voltage signal into a digital signal form, then calculates to obtain a standard instantaneous direct current electric energy pulse signal and sends the standard instantaneous direct current electric energy pulse signal to the electric energy pulse comparison module, the electric energy metering module can calculate a standard instantaneous direct current value, a standard instantaneous direct current voltage value and an instantaneous power value through the instantaneous direct current signal and the instantaneous direct current voltage signal, and the electric energy metering module can send the standard instantaneous direct current value, the standard instantaneous direct current voltage value and the accumulated standard total power consumption consumed in the whole charging process to the MCU main control module; the wireless pulse sending module is connected with a direct current electric energy meter of a direct current charger, an electric energy pulse signal (digital signal) of the direct current electric energy meter of the charger is transmitted to the wireless pulse receiving module through the wireless pulse sending module, after the processing of filtering, shaping and electrical isolation is carried out, the wireless pulse receiving module transmits an output detected instantaneous direct current electric energy pulse signal (digital signal) to the electric energy pulse comparing module, the electric energy pulse comparing module compares and calculates a standard instantaneous direct current electric energy pulse signal and the detected instantaneous direct current electric energy pulse signal of the direct current electric energy meter of the direct current charger, an instantaneous electric energy error value in a percentage form is obtained, and the electric energy pulse comparing module sends the error value to the MCU main control module; CAN communication module is connected to the CAN communication bus in the charging circuit between machine and the power consumption load that charges, and CAN communication module CAN be with the charger end statistics that the power consumption load that hears uses by the prison to be detected total power consumption and to be detected total cost and send to MCU host system, MCU host system compares the error value that reachs total power consumption with the standard total power consumption that is sent electric energy metering module, and MCU host system calculates through standard total power consumption and reachs standard total cost, MCU host system will be detected total cost and standard total cost and compare the error value that reachs the total cost.
The embodiment of the invention can accurately determine the electric energy error of the direct current charger, provides a scheme for transmitting data under two situations, overcomes the problem that the charger is inconvenient in information transmission under severe environment, provides more possibilities for different outdoor environments such as a direct current charging pile installation site and the like, can be more suitable for the market development requirement, and is easier to remotely monitor compared with the traditional online verification scheme by using the technical scheme.
Fig. 4 is a flowchart of a method 400 for checking a power error of a dc charger according to an embodiment of the present invention. As shown in fig. 4, a method 400 for checking an electric energy error of a dc charger according to an embodiment of the present invention starts from step 401, and in step 401, a check meter calculates the electric energy error of the dc charger according to an obtained electric energy pulse signal for charging an electric load and a measured electric energy pulse signal measured by a built-in electric energy meter of the dc charger.
In step 402, when the current state of the wireless communication signal is stable, the calibrator directly transmits the power error to the server.
In step 403, when the current state of the wireless communication signal is unstable, the calibrator sends the power error to the mobile communication terminal; and the mobile communication terminal sends the electric energy error to a server.
Preferably, wherein the method comprises:
acquiring a standard electric energy pulse signal for charging an electric load by using an electric energy metering module of a calibrator;
acquiring a measured electric energy pulse signal measured by a built-in electric energy meter of the direct current charger by using a wireless pulse receiving module of the calibrator;
calculating the electric energy error of the direct current charger by using an electric energy pulse comparison module of the calibrator according to the standard electric energy pulse signal and the measured electric energy pulse signal;
when the current wireless communication signal state is stable, the main control module of the check meter directly sends the electric energy error to the server through the wireless module;
and when the current state of the wireless communication signal is unstable, the main control module of the check meter sends the electric energy error to the mobile communication terminal through the Bluetooth module.
Preferably, wherein the method further comprises: when the calibrator is not supported by an external power supply, the power supply module is used for providing electric energy support for the main control module, so that the main control module can send electric energy errors to the server.
Preferably, wherein the method further comprises:
the CAN communication module sends the detected total power consumption and the detected total cost counted by the monitored direct current charger end used by the power load to the main control module;
the main control module compares the standard total power consumption sent by the electric energy metering module with the detected total power consumption to obtain an error value of the total power consumption;
and calculating standard total cost according to the standard total power consumption, and comparing the detected total cost with the standard total cost to obtain an error value of the total cost.
Preferably, wherein the method further comprises:
and acquiring the measured electric energy pulse information measured by a built-in electric energy meter of the direct current charger by using the wireless pulse transmitting unit, and transmitting the measured electric energy pulse information to the calibrator.
The method 400 for checking the electric energy error of the dc charger according to the embodiment of the present invention corresponds to the system 100 for checking the electric energy error of the dc charger according to another embodiment of the present invention, and is not described herein again.
The invention has been described with reference to a few embodiments. However, other embodiments of the invention than the one disclosed above are equally possible within the scope of the invention, as would be apparent to a person skilled in the art from the appended patent claims.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [ device, component, etc ]" are to be interpreted openly as referring to at least one instance of said device, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A system for checking the power error of a dc charger, characterized in that it comprises:
the calibration instrument is embedded in the charging gun and used for calculating the electric energy error of the direct-current charger according to the acquired electric energy pulse signal for charging the electric load and the measured electric energy pulse signal measured by a built-in electric energy meter of the direct-current charger and directly sending the electric energy error to the server when the current state of the wireless communication signal is stable; when the current state of the wireless communication signal is unstable, the electric energy error is sent to the mobile communication terminal;
a server for receiving the power error;
and the mobile communication terminal is used for receiving the electric energy error and sending the electric energy error to the server.
2. The system of claim 1, wherein the prover comprises:
the electric energy metering module is connected with the electric energy pulse comparison module and is used for acquiring a standard electric energy pulse signal for charging the electric load;
the wireless pulse receiving module is connected with the electric energy pulse comparing module and is used for acquiring a measured electric energy pulse signal measured by a built-in electric energy meter of the direct current charger;
the electric energy pulse comparison module is connected with the main control module and used for calculating the electric energy error of the direct current charger according to the standard electric energy pulse signal and the measured electric energy pulse signal;
the main control module is used for directly sending the electric energy error to the server through the wireless module when the current state of the wireless communication signal is stable; and the power error is sent to the mobile communication terminal through the Bluetooth module when the current state of the wireless communication signal is unstable.
3. The system of claim 2, wherein the prover further comprises:
and the power supply module is connected with the main control module and used for providing electric energy support for the main control module when the calibrator is not supported by an external power supply, so that the main control module can send an electric energy error to the server.
4. The system of claim 2, wherein the prover further comprises:
the CAN communication module is connected to a CAN communication bus in a charging circuit between the direct current charger and the electric load, is connected with the main control module, and is used for sending the detected total electricity consumption and the detected total cost counted by the monitored direct current charger used by the electric load to the main control module;
the main control module is used for comparing the standard total power consumption sent by the electric energy metering module with the detected total power consumption to obtain an error value of the total power consumption; and calculating standard total cost according to the standard total power consumption, and comparing the detected total cost with the standard total cost to obtain an error value of the total cost.
5. The system of claim 1, further comprising:
and the wireless pulse transmitting unit is used for acquiring the measured electric energy pulse information measured by a built-in electric energy meter of the direct-current charger and sending the measured electric energy pulse information to the calibrator.
6. A method for checking electric energy error of a direct current charger is characterized by comprising the following steps:
the calibration instrument calculates the electric energy error of the direct current charger according to the obtained electric energy pulse signal for charging the electric load and the measured electric energy pulse signal measured by a built-in electric energy meter of the direct current charger;
when the current wireless communication signal state is stable, the calibrator directly sends the electric energy error to the server;
and when the current state of the wireless communication signal is unstable, the calibrator sends the electric energy error to the mobile communication terminal, and the mobile communication terminal sends the electric energy error to the server.
7. The method of claim 6, wherein the method comprises:
acquiring a standard electric energy pulse signal for charging an electric load by using an electric energy metering module of a calibrator;
acquiring a measured electric energy pulse signal measured by a built-in electric energy meter of the direct current charger by using a wireless pulse receiving module of the calibrator;
calculating the electric energy error of the direct current charger by using an electric energy pulse comparison module of the calibrator according to the standard electric energy pulse signal and the measured electric energy pulse signal;
when the current wireless communication signal state is stable, the main control module of the check meter directly sends the electric energy error to the server through the wireless module;
and when the current state of the wireless communication signal is unstable, the main control module of the check meter sends the electric energy error to the mobile communication terminal through the Bluetooth module.
8. The method of claim 7, further comprising:
when the calibrator is not supported by an external power supply, the power supply module is used for providing electric energy support for the main control module, so that the main control module can send electric energy errors to the server.
9. The method of claim 7, further comprising:
the CAN communication module sends the detected total power consumption and the detected total cost counted by the monitored direct current charger end used by the power load to the main control module;
the main control module compares the standard total power consumption sent by the electric energy metering module with the detected total power consumption to obtain an error value of the total power consumption;
and calculating standard total cost according to the standard total power consumption, and comparing the detected total cost with the standard total cost to obtain an error value of the total cost.
10. The method of claim 6, wherein the method comprises:
and acquiring the measured electric energy pulse information measured by a built-in electric energy meter of the direct current charger by using the wireless pulse transmitting unit, and transmitting the measured electric energy pulse information to the calibrator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910995476.6A CN110780260A (en) | 2019-10-18 | 2019-10-18 | System and method for checking electric energy error of direct current charger |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537942A (en) * | 2020-04-23 | 2020-08-14 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Detection system suitable for real-time calibration of electric energy meter |
| CN112327050A (en) * | 2021-01-07 | 2021-02-05 | 中国电力科学研究院有限公司 | External plug-in integrated metering device for non-vehicle charger |
| CN115542235A (en) * | 2022-11-07 | 2022-12-30 | 北京志翔科技股份有限公司 | Method, device and equipment for determining metering error of charging gun and storage medium |
-
2019
- 2019-10-18 CN CN201910995476.6A patent/CN110780260A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537942A (en) * | 2020-04-23 | 2020-08-14 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Detection system suitable for real-time calibration of electric energy meter |
| CN112327050A (en) * | 2021-01-07 | 2021-02-05 | 中国电力科学研究院有限公司 | External plug-in integrated metering device for non-vehicle charger |
| CN115542235A (en) * | 2022-11-07 | 2022-12-30 | 北京志翔科技股份有限公司 | Method, device and equipment for determining metering error of charging gun and storage medium |
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