1. The utility model provides an alternating-current charging stake is calibrating installation in batches which characterized in that includes: the system comprises an industrial personal computer, a serial server, an alternating current charging pile access platform body and a test load; the industrial personal computer is connected with the alternating current charging pile access platform body through the serial server; the output end of the AC charging pile access platform body is connected with the input end of the AC charging pile to be tested; the output end of the test load is connected with the input end of the alternating-current charging pile access platform body; the output end of the test load is connected with the input end of the alternating current charging pile to be tested;

the AC charging pile access platform body comprises a plurality of clamping positions, a processor corresponding to the number of the clamping positions, a data acquisition module corresponding to the number of the clamping positions and an analog control guide circuit; the clamping position is provided with a charging gun socket, a three-phase power supply output port and a pulse interface; the input end of the data acquisition module is respectively connected with the output end of the charging gun socket and the output end of the test load; the test load is connected with the charging gun socket through a simulation control guide circuit; and the alternating-current charging pile access platform body is provided with a three-phase power supply input port, a test signal output port and a control interface.

2. The apparatus of claim 1, wherein the three-phase power supply is a 60KVA AC power supply.

3. The apparatus of claim 1, wherein the test load is a programmable ac load and is a purely resistive load.

4. The apparatus of claim 3, wherein the processor is of the model STM32F103ZET 6.

5. The device according to claim 4, further comprising an international automatic verification intelligent system, wherein the international automatic verification intelligent system is in communication connection with the AC charging pile access platform body through the control interface and is used for automatically verifying the AC charging pile to be tested.

6. The AC charging pile batch verification method based on the AC charging pile batch verification device of claim 5 is characterized by comprising the following steps:

step one, selecting a test mode;

secondly, setting parameters of the alternating current charging pile to be tested according to actual detection conditions;

selecting verification items, wherein the verification items specifically comprise: working error, indicating error, paying amount error and clock indicating error;

step four, verifying each item according to the selection sequence;

and fifthly, generating a verification report.

7. The method according to claim 6, wherein the performing parameter setting in step two specifically comprises: charging pile maximum current output, charging pile minimum current output, electric energy meter pulse constant, charging pile accuracy grade, metering mode, charging pile type and charge rate.

8. The method as claimed in claim 7, wherein the working errors in the step three are expressed as relative errors, and the working error limit of the ac charging pile to be tested should meet the specification of the standard jjjg 1148 and 2018.

9. The method as claimed in claim 8, wherein the indication error in step three is expressed as a relative error, and the indication error limit of the ac charging post to be tested should meet the specification of the standard jjjg 1148 and 2018.

10. The method according to claim 9, wherein in the third step, the clock indication error is such that when the first time detection is performed, the clock indication error of the alternating-current charging pile to be tested is not more than 5 s; and during subsequent detection, the time is not more than 3 min.

Background

The electric automobile is already regarded as a strategic emerging industry by China, and has important significance for vigorously developing new energy and protecting climate environment in China. In these years, the government of China continuously increases the support of the charging automobile and the charging equipment thereof, so that the charging automobile and the charging equipment are rapidly developed at present. The alternating current charging pile is used as a measuring instrument which directly influences the property safety of people, the measuring accuracy of the alternating current charging pile needs to be guaranteed, and the quality of the alternating current charging pile needs to be periodically verified by related quality inspection departments. At present, most of the methods for metrological verification of single piles are adopted, so that the detection efficiency is low, the workload is heavy, and the conditions of manual misoperation are easy to occur.

Therefore, the device and the method for calibrating the batch of the alternating-current charging piles are provided, and the metering accuracy of a plurality of alternating-current charging piles can be calibrated at the same time.

Disclosure of Invention

The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

The invention provides a batch calibrating device for alternating current charging piles, which comprises: the system comprises an industrial personal computer, a serial server, an alternating current charging pile access platform body and a test load; the industrial personal computer is connected with the alternating current charging pile access platform body through the serial server; the output end of the AC charging pile access platform body is connected with the input end of the AC charging pile to be tested; the output end of the test load is connected with the input end of the alternating-current charging pile access platform body; the output end of the test load is connected with the input end of the alternating current charging pile to be tested;

the AC charging pile access platform body comprises a plurality of clamping positions, a processor corresponding to the number of the clamping positions, a data acquisition module corresponding to the number of the clamping positions and an analog control guide circuit; the clamping position is provided with a charging gun socket, a three-phase power supply output port and a pulse interface; the input end of the data acquisition module is respectively connected with the output end of the charging gun socket and the output end of the test load; the test load is connected with the charging gun socket through a simulation control guide circuit; and the alternating-current charging pile access platform body is provided with a three-phase power supply input port, a test signal output port and a control interface.

Preferably, the three-phase power supply is a 60KVA AC power supply.

Preferably, the test load is a programmable alternating current load and is a pure resistive load.

Preferably, the processor is of the model STM32F103ZET 6.

Preferably, still include the automatic intelligent system that examines and determine of national standard, the automatic intelligent system that examines and determine of international passes through control interface and alternating-current charging stake access stage body communication are connected for carry out the automatic verification to the alternating-current charging stake that awaits measuring.

A batch verification method for alternating current charging piles comprises the following steps:

step one, selecting a test mode;

secondly, setting parameters of the alternating current charging pile to be tested according to actual detection conditions;

selecting verification items, wherein the verification items specifically comprise: working error, indicating error, paying amount error and clock indicating error;

step four, verifying each item according to the selection sequence;

and fifthly, generating a verification report.

Preferably, the performing parameter setting in step two specifically includes: charging pile maximum current output, charging pile minimum current output, electric energy meter pulse constant, charging pile accuracy grade, metering mode, charging pile type and charge rate.

Preferably, the working errors in the step three are expressed by relative errors, and the working error limit of the alternating-current charging pile to be tested should meet the specification of the standard jjjg 1148-.

Preferably, the indication error in the step three is expressed by a relative error, and the indication error limit of the alternating-current charging pile to be tested should meet the specification of the standard jjjg 1148-.

Preferably, the clock indication error in the third step should meet the requirement that the clock indication error of the alternating-current charging pile to be tested should not exceed 5s when the first detection is carried out; and during subsequent detection, the time is not more than 3 min.

The invention has the following beneficial effects: according to the method, the industrial personal computer is used for setting parameters for the test load, the charging pile to be tested receives a charging request after the test load is started, charging is started, in the charging process of the charging pile, the alternating-current charging pile access platform body and the charging pile perform data interaction through the charging gun socket, and the state of the charging pile to be tested is determined through data. The method solves the technical problems of low detection efficiency, heavy workload and easy occurrence of artificial misoperation of a single-pile metrological verification method. The batch detection of the alternating-current charging piles is realized, and the detection efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an ac charging pile access platform according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of a method according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

First embodiment, the present embodiment is described with reference to fig. 1 to 2, and an ac charging pile batch verification apparatus includes: the system comprises an industrial personal computer, a serial server, an alternating current charging pile access platform body and a test load; the industrial personal computer is connected with the alternating current charging pile access platform body through the serial server; the output end of the AC charging pile access platform body is connected with the input end of the AC charging pile to be tested; the output end of the test load is connected with the input end of the alternating-current charging pile access platform body; and the output end of the test load is connected with the input end of the alternating-current charging pile to be tested.

The AC charging pile access platform body comprises a plurality of clamping positions, a processor corresponding to the number of the clamping positions, a data acquisition module corresponding to the number of the clamping positions and an analog control guide circuit; the clamping position is provided with a charging gun socket, a three-phase power supply output port and a pulse interface; the input end of the data acquisition module is respectively connected with the output end of the charging gun socket and the output end of the test load; the test load is connected with the charging gun socket through a simulation control guide circuit; and the alternating-current charging pile access platform body is provided with a three-phase power supply input port, a test signal output port and a control interface.

The industrial personal computer remotely sets test parameters, namely working modes and response power, of a test load in a serial server or CAN bus mode, the test load has the working modes of constant current, constant voltage, constant resistance and constant power and sets corresponding power, and discharge power is randomly combined and set to simulate the charging states of different electric automobiles.

Each clamping position can detect one alternating current charging pile to be tested, the charging gun socket is used for supplying power to the alternating current charging pile to be tested, when the alternating current charging pile to be tested is charged, the charging gun socket detects a response function according to the parameters of a test load and transmits detected data to the processor; the three-phase power supply outputs electric energy; the pulse interface is used for calculating the output electric energy of the alternating-current charging pile to be tested.

Specifically, the three-phase power input port is used for connecting an external power supply and supplying power to the AC charging pile access platform body.

Specifically, the test signal output port can be used for connecting an external controller, and the work of the remote control alternating-current charging pile access platform body is realized. For example, the computer terminal controls in real time.

Specifically, in order to meet the detection requirement of a three-phase 63A charging pile, a three-phase alternating-current power supply is selected for electric energy transmission, and the three-phase power supply is a 60KVA alternating-current power supply. The 60KVA alternating current power supply can output 0 VAC-300 VAC voltage with rated power, and has low harmonic current and small influence on a power grid. Three phases are independently loaded, and each phase can be independently started, so that the loading requirements of a nonlinear charging module and a charger are met.

Specifically, the test load is a programmable alternating current load and is a pure resistive load. The single-phase power of the test load is 17kW, the total power of the three phases is 51kW, and the test load can be independently controlled in a single phase, so that the test load requirements of single-phase and three-phase alternating-current charging piles are met.

Specifically, the processor is of the model STM32F103ZET 6. The STM32F103ZET6 microprocessor adopts the ARM Cortex-M3 kernel of high performance, low-power consumption, is the product of the minimum power consumption in 32 bit markets, and peripheral hardware resources are abundant simultaneously, the memory is enough, the price is lower.

Specifically, this device still includes the automatic intelligent system that examines and determine of national standard, the automatic intelligent system that examines and determine of international passes through control interface and alternating-current charging stake access stage body communication are connected for carry out the automatic examination to the alternating-current charging stake that awaits measuring.

Specifically, the national standard automatic verification intelligent system is connected with an industrial personal computer, and data can be transmitted mutually.

Specifically, the output end of the test load is in communication connection with a charging gun socket on the alternating-current charging pile access platform body.

In a second embodiment, referring to fig. 3, the method for batch verification of the ac charging piles includes the following steps:

step one, selecting a test mode;

specifically, the test mode can be selected in international measurement and precision measurement, and the test mode can automatically enter a parameter setting interface of the alternating-current charging pile to be tested after the test mode is selected;

secondly, setting parameters of the alternating current charging pile to be tested according to actual detection conditions;

specifically, the parameter setting includes charging pile maximum current output, charging pile minimum current output, electric energy meter pulse constant, charging pile accuracy level, metering mode (high/low frequency pulse), charging pile type (single/three phase), charging rate (corresponding charging time interval and unit price are modified), and the like, and the configuration is performed according to actual detection conditions. After the determination, the system jumps to a verification item selection interface.

Selecting verification items, wherein the verification items specifically comprise: working error, indicating value, paying amount error and clock indicating value error;

specifically, the verification items specifically include: first verification, subsequent verification and verification in use. The first certification data, subsequent certification data, and certification data in use may be recorded separately.

Step four, verifying each item according to the selection sequence;

specifically, regarding the working error:

the working error of the alternating current charging pile to be tested is expressed by relative error, and under the specified verification condition, the working error limit of the charging pile meets the specification of the standard JJJG 1148-2018.

The national standard automatic verification intelligent system can prompt card swiping after entering the performance test interface, the card swiping starts to charge the electric pile after clicking 'confirmation', the national standard automatic verification intelligent system can control the batch verification control console, verification of three verification points of each pile is automatically carried out, and results can be displayed on the system interface. The next certification project is then automatically entered.

Specifically, regarding the indication error and the payment amount error:

(1) indicating value error: and the measurement error of the charging electric energy displayed by the alternating current charging pile to be tested is expressed by relative error. The indicating value error meets the specification of the standard JJG 1148 and 2018.

(2) Error of payment amount: the absolute value of the difference between the payment amount displayed by the alternating current charging pile to be tested and the amount due calculated according to the unit price and the charging electric energy indicating value of the charging pile should not exceed the minimum payment variable.

On an indication error and payment amount error test interface, each charging pile runs according to the maximum load state, the device automatically stops the charging process after enough electric energy is counted, the charging electric energy value displayed by each charging pile is input according to prompts, and the indication error result is obtained by clicking calculation; and inputting the payment amount after the result is confirmed, and clicking 'charging' to obtain a payment amount error result. The next certification project is automatically entered after the confirmation.

Specifically, regarding the clock indication error:

when the charging pile with the time-sharing charging function is detected for the first time, the clock indication value error of the charging pile is not more than 5 s; and during subsequent detection, the time is not more than 3 min.

In the test interface, the equipment automatically carries out Beijing time synchronization, and software also sets manual GPS time synchronization considering that signals can be unstable. In order to ensure the calculation accuracy, each charging pile of the part needs to be tested independently. And clicking 'stop' to record the corresponding clock indicating value of the charging pile at the moment, inputting the clock indicating value into a corresponding item of the charging pile clock, and clicking 'calculation' to obtain the clock indicating value error of the charging pile.

And fifthly, generating a verification report.

Specifically, after all the piles are tested, a report can be automatically generated after confirmation, and partial information can be manually modified or filled after the report is generated; clicking 'save', popping up a selection saving directory, and saving the report to the designated directory by the user.

The working principle of the invention is as follows: the industrial computer sets up response parameter for the test load according to the demand of test scene, and the activation awaits measuring after the test load starts fills electric pile and charges, and the test load transmits the parameter to the alternating-current charging stake of awaiting measuring, and the alternating-current charging stake of awaiting measuring begins to charge, and in the charging process, the alternating-current charging stake inserts the treater in the platform and carries out data interaction with the alternating-current charging stake of awaiting measuring, and the treater transmits data to the industrial computer through serial servers or CAN bus simultaneously.

While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this description, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as described herein. Furthermore, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The present invention has been disclosed in an illustrative rather than a restrictive sense, and the scope of the present invention is defined by the appended claims.