CN117590139A - Bidirectional metering calibrating device and method for vehicle-network interactive charging pile - Google Patents
Bidirectional metering calibrating device and method for vehicle-network interactive charging pile Download PDFInfo
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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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- 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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- 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
- Y02T90/12—Electric charging stations
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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
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- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention belongs to the technical field of metering verification of charging piles, and provides a vehicle network interaction charging pile bidirectional metering verification device and method, which can acquire communication messages between a charging pile and an electric vehicle in real time, analyze a charging direction and a charging start-stop state according to the communication messages, send pulse signal acquisition instructions to a control module based on the charging start-stop state, and calculate a charging electric energy value recorded by a charging pile electric energy meter to be verified according to a first electric pulse signal and a second electric pulse signal after receiving acquired first electric pulse signals, second electric pulse signals, third electric pulse signals and fourth electric pulse signals, and record the charging electric energy value as E1; calculating an actual charging electric energy value recorded by a standard electric energy meter according to the third electric pulse signal and the fourth electric pulse signal, and recording the actual charging electric energy value as E2; bringing E1, E2 into the formulaCalculating to obtain the charge to be verifiedThe metering error r of the pile. The invention can carry out verification on the vehicle network interactive charging pile.
Description
Technical Field
The invention relates to the technical field of metering verification of charging piles, in particular to a bidirectional metering verification device and method for a vehicle-network interactive charging pile.
Background
The electric automobile is a main development direction of new energy automobiles in the future, and along with the progress of science and technology and the development of society, the related technology of the electric automobile and the construction of charging facilities of the electric automobile are mature continuously, and the electric automobile is more and more widely applied to the life of people. The electric automobile charging pile is a very important component in the electric automobile supporting facilities.
Under the development hot tide of the electric automobile, the charging and discharging behaviors of the large-scale electric automobile can enable the power grid load to be overlapped in a peak-to-peak mode, so that the peak-to-valley difference is further enlarged, the running state of the power grid is deteriorated, and the running reliability of the power grid is affected. Because the electric automobile has the mobile energy storage characteristic, and the load characteristic is bidirectionally adjustable, the electric automobile is a very flexible regulation and control resource, the negative influence of the electric automobile charging load on the power grid can be reduced through the effective interaction between the electric automobile and the power grid, the investment of the power grid is effectively slowed down, auxiliary services can be provided for the power grid, and the problems of difficult new energy consumption, large peak-valley difference and the like of the traditional power grid are solved. Therefore, the novel vehicle-network interactive charging pile has the function of charging and discharging the electric automobile, so that the storage battery of the electric automobile can realize bidirectional energy communication, namely, power is supplied to a power grid or electric energy is acquired from the power grid.
However, at present, the calibrating devices of all large calibrating institutions are mostly one-way metering calibrating devices, and the metering calibrating devices for the novel vehicle-network interactive charging pile are not available, so that the two-way metering calibrating devices cannot be realized, and the development of the novel vehicle-network interactive (V2G) charging pile is severely limited.
Disclosure of Invention
Aiming at the problem that bidirectional metering verification cannot be performed, the invention provides a bidirectional metering verification device and method for a vehicle-network interactive charging pile, so as to realize metering verification on the vehicle-network interactive charging pile.
In a first aspect, the invention provides a vehicle-network interactive charging pile bidirectional metering verification device, which comprises a first interface and a second interface;
the first interface is used for connecting a charging pile to be verified;
the second interface is used for connecting an electric automobile;
a charging passage for realizing charging between the charging pile to be verified and the electric automobile is arranged between the first interface and the second interface;
a standard electric energy meter is arranged on the charging path;
the first interface and the second interface form a communication loop for realizing communication between the charging pile to be verified and the electric automobile through the communication module;
the communication module is provided with a first CAN interface and a second CAN interface;
the communication module is connected with the first interface through the first CAN interface;
the communication module is connected with the second interface through the second CAN interface;
the communication module is connected with the control module;
the control module is connected with the acquisition module and the metering module;
the acquisition module comprises a first pulse signal acquisition interface and a second pulse signal acquisition interface;
the first pulse signal acquisition interface is connected with a standard electric energy meter;
the second pulse signal acquisition interface is used for accessing an electric energy meter of the charging pile to be verified;
the communication module is used for monitoring communication between the charging pile to be verified and the electric automobile on the communication loop, after handshake between the charging pile to be verified and the electric automobile is monitored, the communication loop is disconnected, a charging demand communication message sent by the electric automobile is received in real time through a second CAN interface, charging current and charging direction of the charging demand are analyzed, a current smaller than the charging current is set as first verification current based on the charging current, and the first verification current, the charging direction and preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages;
the communication module is also used for receiving the communication message sent by the charging pile in real time through the first CAN interface after the communication loop is disconnected, analyzing the communication message sent by the charging pile and received in real time through the first CAN interface in real time, and forwarding the communication message to the electric automobile through the second CAN interface in real time;
the communication module is also used for sending a first pulse signal acquisition instruction to the control module when the charging start is analyzed from a communication message sent by the charging pile and received in real time through the first CAN interface;
the control module is used for controlling the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified and an electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, after receiving a first electric pulse signal acquisition instruction, and sequentially recording a first electric pulse signal p1 and a second electric pulse signal p2;
the communication module is also used for sending a second pulse signal acquisition instruction to the control module when the charging stop is analyzed from the communication message sent by the charging pile and received in real time through the first CAN interface;
the control module is further used for controlling the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified and the electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, after receiving the second electric pulse signal acquisition instruction, and sequentially recording a third electric pulse signal p1 'and a fourth electric pulse signal p2';
the control module is also used for calculating a charging electric energy value recorded by the electric energy meter of the charging pile to be detected according to the first electric pulse signal p1 and the third electric pulse signal p1' after receiving the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1' and the fourth electric pulse signal p2', and recording as E1; calculating a charging electric energy value recorded by a standard electric energy meter according to the second electric pulse signal p2 and the fourth electric pulse signal p2', and recording as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected.
Further, the device also comprises a verification resistor connection interface;
the resistor connection interface is used for accessing the verification resistor;
when the verification resistor is connected to the verification resistor connecting interface, the communication module simulates the electric automobile to handshake with the charging pile to be verified, and after handshake is achieved, the communication loop is disconnected, and a preset second verification current, a preset charging direction and a preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages.
Further, the apparatus also includes a certificate generation module;
the control module is connected with the certificate generation module and is used for generating verification certificates and detection certificates based on the error values.
Further, the device also comprises a storage module;
the control module is connected with the storage module;
the storage module is used for storing the device.
Further, the device also comprises an intelligent screen;
the control module is connected with the intelligent screen;
the intelligent screen is used for displaying the error value, the verification certificate and the detection certificate.
Further, the device also comprises a main power supply module and a standby power supply module;
the main power supply module is used for converting 220V alternating current voltage into 12V direct current voltage and supplying power to the verification device;
the standby power module adopts a lithium battery.
In a second aspect, the invention provides a bidirectional metering verification method for a vehicle-network interactive charging pile, which comprises the following steps:
after the charging pile to be verified is accessed through the first interface and the electric automobile is accessed through the second interface:
the communication module monitors communication between the charging pile to be verified and the electric automobile on the communication loop, after handshake is achieved between the charging pile to be verified and the electric automobile, the communication loop is disconnected, a charging demand communication message sent by the electric automobile is received in real time through a second CAN interface, charging current and charging direction of the charging demand are analyzed, a current smaller than the charging current is set as first verification current based on the charging current, and the first verification current, the charging direction and preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages;
after the communication loop is disconnected, the communication module receives the communication message sent by the charging pile in real time through the first CAN interface, and analyzes the communication message sent by the charging pile and received in real time through the first CAN interface in real time and forwards the communication message to the electric automobile through the second CAN interface in real time;
when the communication module analyzes that charging is started from a communication message sent by a charging pile and received in real time through a first CAN interface, a first pulse signal acquisition instruction is sent to the control module;
after receiving a first electric pulse signal acquisition instruction, the control module controls the acquisition module to acquire an electric pulse signal currently output by an electric energy meter of the charging pile to be detected and a standard electric energy meter currently output which are connected to the first interface, and sequentially records a first electric pulse signal p1 and a second electric pulse signal p2;
when the communication module analyzes that charging is stopped from a communication message sent by the charging pile and received in real time through the first CAN interface, a second pulse signal acquisition instruction is sent to the control module;
after receiving the second electric pulse signal acquisition instruction, the control module again controls the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be detected and an electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, and sequentially records a third electric pulse signal p1 'and a fourth electric pulse signal p2';
after receiving the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1' and the fourth electric pulse signal p2', the control module calculates a charging electric energy value recorded by the electric energy meter of the charging pile to be detected according to the first electric pulse signal p1 and the third electric pulse signal p1', and records the charging electric energy value as E1; calculating a charging electric energy value recorded by a standard electric energy meter according to the second electric pulse signal p2 and the fourth electric pulse signal p2', and recording as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected.
Further, when the second interface is idle, and the verification resistor is connected to the verification resistor connection interface:
the communication module simulates the electric automobile to handshake with the charging pile to be verified, and after handshake is achieved, the communication loop is disconnected, and the preset second verification current, the preset charging direction and the preset verification charging time are sent to the charging pile to be verified in the form of communication messages through the first CAN interface.
Compared with the prior art, the invention has the advantages that:
the invention can acquire the communication message between the charging pile and the electric automobile in real time according to the communicationThe method comprises the steps of acquiring a charging direction and a charging state by a message, respectively acquiring electric pulse signals of a charging pile electric energy meter to be detected and a standard electric energy meter when charging is started and stopped, calculating an actual charging electric energy value E1 recorded by the charging pile electric energy meter to be detected according to the electric pulse signals, and an actual charging electric energy value E2 recorded by the standard electric energy meter according to a formulaAnd calculating an error value of the charging pile to be verified. The invention can carry out verification on the vehicle network interactive charging pile.
The invention can also generate verification certificates and detection certificates, and the generated certificates can ensure consistency in each test or verification process, so that the influence of human factors on the content of the certificates is avoided, and the reliability and traceability of verification results are improved.
It can be seen that the present invention has outstanding substantial features and significant advances over the prior art, as well as the benefits of its implementation.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of a bi-directional metering verification device for a vehicle network interactive charging pile of the present invention.
Fig. 2 is a schematic diagram of a wiring state of the bidirectional metering verification device for the vehicle network interactive charging pile.
Fig. 3 is a schematic block diagram of the two-way metering verification device for the vehicle network interactive charging pile connected to the electric vehicle.
Fig. 4 is a schematic block diagram of an access verification resistor of the vehicle network interactive charging pile bidirectional metrological verification device of the present invention.
Fig. 5 is a schematic flow chart of a method of one embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
FIG. 1 is a schematic block diagram of a bi-directional metrological verification device for a vehicle network interactive charging stake of the present invention.
Fig. 2 is a schematic diagram of the field wiring of the vehicle network interactive charging pile bidirectional metering verification device of the invention.
Fig. 3 is a schematic block diagram of the two-way metering verification device for the vehicle network interactive charging pile connected to the electric vehicle.
As shown in fig. 1-3, the invention provides a vehicle network interactive charging pile bidirectional metering verification device, which comprises a first interface and a second interface, wherein the first interface is used for connecting a charging pile to be verified, and the second interface is used for connecting an electric vehicle. The charging pile to be identified is a vehicle network interactive charging pile.
A charging passage for realizing charging between the charging pile to be verified and the electric automobile is arranged between the first interface and the second interface.
And a standard electric energy meter is arranged on the charging path.
The first interface and the second interface form a communication loop for realizing communication between the charging pile to be verified and the electric automobile through the communication module.
The communication module is provided with a first CAN interface (recorded as CAN 1) and a second CAN interface (recorded as CAN 2).
The communication module is connected with the first interface through the first CAN interface, and the communication module is connected with the second interface through the second CAN interface.
The communication module is connected with a control module.
The control module is connected with the acquisition module and the metering module.
The acquisition module comprises a first pulse signal acquisition interface and a second pulse signal acquisition interface.
The first pulse signal acquisition interface is connected with the standard electric energy meter, and the second pulse signal acquisition interface is used for being connected with the electric energy meter of the charging pile to be verified.
The communication module is used for monitoring communication between the charging pile to be verified and the electric automobile on the communication loop, after handshake between the charging pile to be verified and the electric automobile is monitored, the communication loop is disconnected, a charging demand communication message sent by the electric automobile is received in real time through the second CAN interface, charging current and charging direction of the charging demand are analyzed, a current smaller than the charging current is set as first verification current based on the charging current, and the first verification current, the charging direction and preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages.
The first verification current is charging current based on electric vehicle requirements and is simulated electric vehicle required current sent to the charging pile to be verified.
The communication module is further used for receiving the communication message sent by the charging pile in real time through the first CAN interface after the communication loop is disconnected, analyzing the communication message sent by the charging pile and received in real time through the first CAN interface in real time, and forwarding the communication message to the electric automobile through the second CAN interface in real time.
The communication module is also used for sending a first pulse signal acquisition instruction to the control module when the charging start is analyzed from the communication message sent by the charging pile and received in real time through the first CAN interface.
The control module is used for controlling the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified and an electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, after receiving the first electric pulse signal acquisition instruction, and sequentially recording a first electric pulse signal p1 and a second electric pulse signal p2.
The communication module is also used for sending a second pulse signal acquisition instruction to the control module when the charging stop is analyzed from the communication message sent by the charging pile and received in real time through the first CAN interface.
The control module is further used for controlling the acquisition module to acquire the current output electric pulse signal of the electric energy meter of the charging pile to be verified and the current output electric pulse signal of the standard electric energy meter, which are connected to the first interface, after receiving the second electric pulse signal acquisition command, and sequentially recording a third electric pulse signal p1 'and a fourth electric pulse signal p2'.
The control module is also used for calculating a charging electric energy value recorded by the electric energy meter of the charging pile to be detected according to the first electric pulse signal p1 and the third electric pulse signal p1' after receiving the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1' and the fourth electric pulse signal p2', and recording as E1; calculating a charging electric energy value recorded by a standard electric energy meter according to the second electric pulse signal p2 and the fourth electric pulse signal p2', and recording as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected.
Before the invention is used, the calibrating device is connected with the charging pile to be calibrated and the electric automobile through the first interface and the second interface.
When the electric vehicle charging device is used, the communication module monitors communication between the charging pile to be verified and the electric vehicle on the communication loop, after handshake between the charging pile to be verified and the electric vehicle is achieved, the communication loop is disconnected, a charging demand communication message sent by the electric vehicle is received in real time through the second CAN interface, charging current and charging direction of the charging demand are analyzed, a current smaller than the charging current is set as first verification current based on the charging current, and the first verification current, the charging direction and preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages.
The charging direction refers to a charging mode and a discharging mode, and the charging mode is to charge a battery of the electric vehicle from the power grid when the electric vehicle needs to obtain energy from the power grid. At this time, the current flow direction enters the electric automobile from the power grid, and the electric automobile is charged by the corresponding charging pile according to the first verification current. The discharging mode is when the electric vehicle needs to return the stored energy to the grid, and the charging direction is to discharge from the battery of the electric vehicle to the grid. At this time, the current flows from the electric automobile to the power grid, and the current is the second verification current.
After the communication loop is disconnected, the communication module receives the communication message sent by the charging pile in real time through the first CAN interface, and analyzes the communication message sent by the charging pile and received in real time through the first CAN interface in real time and forwards the communication message to the electric automobile through the second CAN interface in real time.
When the communication module analyzes that charging is started from a communication message sent by the charging pile and received in real time through the first CAN interface, a first pulse signal acquisition instruction is sent to the control module.
After receiving a first electric pulse signal acquisition instruction, the control module controls the acquisition module to acquire an electric pulse signal currently output by an electric energy meter of the charging pile to be detected, which is connected to the first interface, and an electric pulse signal currently output by the standard electric energy meter, and sequentially records a first electric pulse signal p1 and a second electric pulse signal p2.
And when the communication module analyzes that the charging is stopped from the communication message sent by the charging pile and received in real time through the first CAN interface, the communication module sends a second pulse signal acquisition instruction to the control module.
After receiving the second electric pulse signal acquisition instruction, the control module again controls the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified, which is connected to the first interface, and an electric pulse signal currently output by the standard electric energy meter, and records a third electric pulse signal p1 'and a fourth electric pulse signal p2' in sequence.
After receiving the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1' and the fourth electric pulse signal p2', the control module calculates a charging electric energy value recorded by the electric energy meter of the charging pile to be detected according to the first electric pulse signal p1 and the third electric pulse signal p1', and records the charging electric energy value as E1; calculating a charging electric energy value recorded by a standard electric energy meter according to the second electric pulse signal p2 and the fourth electric pulse signal p2', and recording as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected. The invention can carry out real-time bidirectional verification on the vehicle network interactive charging pile, improves the field verification efficiency and reduces the field verification cost.
It should be noted that, the verification current needs to be smaller than the charging current and larger than the lowest current for ensuring the normal operation of the charging pile. The verification current of the charging pile is smaller than the charging current of the electric automobile, so that the charging pile can stably output when metering detection is performed.
In addition, the verification charging time may be set to 10 minutes, 20 minutes, or 30 minutes. The specific time may be set as desired by those skilled in the art.
In another embodiment of the invention, as shown in fig. 4, the apparatus further comprises a certification resistor connection interface.
The device also comprises a verification resistor connection interface, and the resistor connection interface is used for accessing the verification resistor.
When the verification resistor is connected to the verification resistor connecting interface, the communication module simulates the electric automobile to handshake with the charging pile to be verified, and after handshake is achieved, the communication loop is disconnected, and a preset second verification current, a preset charging direction and a preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages.
The communication module is also used for sending a first pulse signal acquisition instruction to the control module when the charging start is analyzed from a communication message sent by the charging pile and received in real time through the first CAN interface;
the control module is used for controlling the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified and an electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, after receiving a first electric pulse signal acquisition instruction, and sequentially recording a first electric pulse signal p1 and a second electric pulse signal p2;
the communication module is also used for sending a second pulse signal acquisition instruction to the control module when the charging stop is analyzed from the communication message sent by the charging pile and received in real time through the first CAN interface;
the control module is further used for controlling the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified and the electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, after receiving the second electric pulse signal acquisition instruction, and sequentially recording a third electric pulse signal p1 'and a fourth electric pulse signal p2';
the control module is also used for calculating a charging electric energy value recorded by the electric energy meter of the charging pile to be detected according to the first electric pulse signal p1 and the third electric pulse signal p1' after receiving the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1' and the fourth electric pulse signal p2', and recording as E1; calculating a charging electric energy value recorded by a standard electric energy meter according to the second electric pulse signal p2 and the fourth electric pulse signal p2', and recording as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected.
It should be noted that, this calibrating device can examine and determine the electric pile when electric pile charges, also can examine and determine the electric pile when electric pile charges and discharges, is suitable for the two-way examination of electric pile promptly.
Before the invention is used, the calibrating device is connected with the charging pile to be calibrated and the electric automobile through the first interface and the second interface.
When the communication module is used, the communication module simulates the electric automobile to handshake with the charging pile to be verified, and after handshake is achieved, the communication loop is disconnected, and the preset second verification current, the preset charging direction and the preset verification charging time are sent to the charging pile to be verified in the form of communication messages through the first CAN interface. When the communication module analyzes that charging is started from a communication message sent by the charging pile and received in real time through the first CAN interface, a first pulse signal acquisition instruction is sent to the control module.
After receiving a first electric pulse signal acquisition instruction, the control module controls the acquisition module to acquire an electric pulse signal currently output by an electric energy meter of the charging pile to be detected, which is connected to the first interface, and an electric pulse signal currently output by the standard electric energy meter, and sequentially records a first electric pulse signal p1 and a second electric pulse signal p2.
And when the communication module analyzes that the charging is stopped from the communication message sent by the charging pile and received in real time through the first CAN interface, the communication module sends a second pulse signal acquisition instruction to the control module.
After receiving the second electric pulse signal acquisition instruction, the control module again controls the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified, which is connected to the first interface, and an electric pulse signal currently output by the standard electric energy meter, and records a third electric pulse signal p1 'and a fourth electric pulse signal p2' in sequence.
After receiving the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1' and the fourth electric pulse signal p2', the control module calculates a charging electric energy value recorded by the electric energy meter of the charging pile to be detected according to the first electric pulse signal p1 and the third electric pulse signal p1', and records the charging electric energy value as E1; calculating a charging electric energy value recorded by a standard electric energy meter according to the second electric pulse signal p2 and the fourth electric pulse signal p2', and recording as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected.
When the charging pile to be detected is detected, if no electric automobile exists on site, the charging pile to be detected can be detected by adopting the detection resistor, and the detection method is more convenient.
Illustratively, the apparatus further comprises a credential generation module;
the control module is connected with the certificate generation module and is used for generating verification certificates and detection certificates based on the error values. The generation of the certificate can ensure consistency in each test or verification process, avoids the influence of human factors on the content of the certificate, and is helpful for improving the reliability and traceability of verification results.
Illustratively, the apparatus further includes a storage module;
the control module is connected with the storage module;
the storage module is used for storing the device. For example, the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1', the fourth electric pulse signal p2', the charging electric energy value E1 recorded by the electric energy meter of the charging pile to be verified, the actual charging electric energy value E2 recorded by the standard electric energy meter, the verification certificate and the detection certificate are stored.
Illustratively, the apparatus further comprises a smart screen;
the control module is connected with the intelligent screen;
the intelligent screen is used for displaying the error value, the verification certificate and the detection certificate, and is beneficial to on-site checking of staff.
Illustratively, the apparatus further comprises a main power module and a backup power module;
the main power supply module is used for converting 220V alternating current voltage into 12V direct current voltage and supplying power to the verification device;
the standby power module adopts a lithium battery.
The main power supply module and the standby power supply module are respectively connected with the communication module, the message translation module, the control module, the acquisition module, the metering module, the certificate generation module, the intelligent screen, the storage module and the standard electric energy meter in a power supply manner.
Fig. 5 is a schematic flow chart of a method of one embodiment of the invention.
As shown in fig. 5, the method 100 includes:
step 110, the charging pile to be verified is accessed through the first interface, and after the electric automobile is accessed through the second interface.
Step 120, a communication module monitors communication between a charging pile to be verified and an electric automobile on a communication loop, after handshake between the charging pile to be verified and the electric automobile is monitored, the communication loop is disconnected, a charging demand communication message sent by the electric automobile is received in real time through a second CAN interface, charging current and charging direction of the charging demand are analyzed, a current smaller than the charging current is set as a first verification current based on the charging current, and the first verification current, the charging direction and preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages;
after the communication loop is disconnected, the communication module receives the communication message sent by the charging pile in real time through the first CAN interface, and analyzes the communication message sent by the charging pile and received in real time through the first CAN interface in real time and forwards the communication message to the electric automobile through the second CAN interface in real time;
when the communication module analyzes that charging is started from a communication message sent by the charging pile and received in real time through the first CAN interface, a first pulse signal acquisition instruction is sent to the control module.
Step 130, when the communication module analyzes that charging is started from a communication message sent by a charging pile and received in real time through a first CAN interface, a first pulse signal acquisition instruction is sent to the control module;
after receiving a first electric pulse signal acquisition instruction, the control module controls the acquisition module to acquire an electric pulse signal currently output by an electric energy meter of the charging pile to be verified and an electric pulse signal currently output by a standard electric energy meter, which are connected to the first interface, and sequentially records a first electric pulse signal p1 and a second electric pulse signal p2.
Step 140, when the communication module analyzes that the charging is stopped from the communication message sent by the charging pile and received in real time through the first CAN interface, the communication module sends a second pulse signal acquisition instruction to the control module;
after receiving the second electric pulse signal acquisition instruction, the control module again controls the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified and an electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, and sequentially records a third electric pulse signal p1 'and a fourth electric pulse signal p2'.
Step 150, after receiving the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1' and the fourth electric pulse signal p2', the control module calculates a charging electric energy value recorded by the electric energy meter of the charging pile to be verified according to the first electric pulse signal p1 and the third electric pulse signal p1', and records the charging electric energy value as E1; according to the second electric pulse signalThe number p2 and the fourth electric pulse signal p2' calculate the charging electric energy value recorded by the standard electric energy meter and are recorded as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected.
In another embodiment of the invention, the method 200 is also included:
step 210, when the second interface is idle, and the verification resistor is connected to the verification resistor connection interface.
Step 220, the communication module simulates the electric automobile to handshake with the charging pile to be verified, and after handshake is achieved, the communication loop is disconnected, and the preset second verification current, the preset charging direction and the preset verification charging time are sent to the charging pile to be verified in the form of communication messages through the first CAN interface.
Step 230, when the communication module analyzes that charging is started from a communication message sent by a charging pile and received in real time through a first CAN interface, a first pulse signal acquisition instruction is sent to the control module;
after receiving a first electric pulse signal acquisition instruction, the control module controls the acquisition module to acquire an electric pulse signal currently output by an electric energy meter of the charging pile to be verified and an electric pulse signal currently output by a standard electric energy meter, which are connected to the first interface, and sequentially records a first electric pulse signal p1 and a second electric pulse signal p2.
Step 240, when the communication module analyzes that the charging is stopped from the communication message sent by the charging pile and received in real time through the first CAN interface, the communication module sends a second pulse signal acquisition instruction to the control module;
after receiving the second electric pulse signal acquisition instruction, the control module again controls the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified and an electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, and sequentially records a third electric pulse signal p1 'and a fourth electric pulse signal p2'.
Step 250, the control module receives the first electric pulse signal p1, the second electric pulse signal p2, and the third electric pulse signalAfter the pulse signal p1' and the fourth electric pulse signal p2', calculating a charging electric energy value recorded by the electric energy meter of the charging pile to be detected according to the first electric pulse signal p1 and the third electric pulse signal p1', and recording as E1; calculating a charging electric energy value recorded by a standard electric energy meter according to the second electric pulse signal p2 and the fourth electric pulse signal p2', and recording as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected.
The same or similar features as those used in the embodiments of the present description may be used in reference to each other.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting thereof; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a mutual two-way metering verification device of electric pile that fills of car net which characterized in that: the device comprises a first interface and a second interface;
the first interface is used for connecting a charging pile to be verified;
the second interface is used for connecting an electric automobile;
a charging passage for realizing charging between the charging pile to be verified and the electric automobile is arranged between the first interface and the second interface;
a standard electric energy meter is arranged on the charging path;
the first interface and the second interface form a communication loop for realizing communication between the charging pile to be verified and the electric automobile through the communication module;
the communication module is provided with a first CAN interface and a second CAN interface;
the communication module is connected with the first interface through the first CAN interface;
the communication module is connected with the second interface through the second CAN interface;
the communication module is connected with the control module;
the control module is connected with the acquisition module and the metering module;
the acquisition module comprises a first pulse signal acquisition interface and a second pulse signal acquisition interface;
the first pulse signal acquisition interface is connected with a standard electric energy meter;
the second pulse signal acquisition interface is used for accessing an electric energy meter of the charging pile to be verified;
the communication module is used for monitoring communication between the charging pile to be verified and the electric automobile on the communication loop, after handshake between the charging pile to be verified and the electric automobile is monitored, the communication loop is disconnected, a charging demand communication message sent by the electric automobile is received in real time through a second CAN interface, charging current and charging direction of the charging demand are analyzed, a current smaller than the charging current is set as first verification current based on the charging current, and the first verification current, the charging direction and preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages;
the communication module is also used for receiving the communication message sent by the charging pile in real time through the first CAN interface after the communication loop is disconnected, analyzing the communication message sent by the charging pile and received in real time through the first CAN interface in real time, and forwarding the communication message to the electric automobile through the second CAN interface in real time;
the communication module is also used for sending a first pulse signal acquisition instruction to the control module when the charging start is analyzed from a communication message sent by the charging pile and received in real time through the first CAN interface;
the control module is used for controlling the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified and an electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, after receiving a first electric pulse signal acquisition instruction, and sequentially recording a first electric pulse signal p1 and a second electric pulse signal p2;
the communication module is also used for sending a second pulse signal acquisition instruction to the control module when the charging stop is analyzed from the communication message sent by the charging pile and received in real time through the first CAN interface;
the control module is further used for controlling the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be verified and the electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, after receiving the second electric pulse signal acquisition instruction, and sequentially recording a third electric pulse signal p1 'and a fourth electric pulse signal p2';
the control module is also used for calculating a charging electric energy value recorded by the electric energy meter of the charging pile to be detected according to the first electric pulse signal p1 and the third electric pulse signal p1' after receiving the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1' and the fourth electric pulse signal p2', and recording as E1; calculating a charging electric energy value recorded by a standard electric energy meter according to the second electric pulse signal p2 and the fourth electric pulse signal p2', and recording as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected.
2. The vehicle network interactive charging pile bidirectional metering verification device according to claim 1, wherein:
the device also comprises a verification resistor connection interface;
the resistor connection interface is used for accessing the verification resistor;
when the verification resistor is connected to the verification resistor connecting interface, the communication module simulates the electric automobile to handshake with the charging pile to be verified, and after handshake is achieved, the communication loop is disconnected, and a preset second verification current, a preset charging direction and a preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages.
3. The vehicle network interactive charging pile bidirectional metering verification device according to claim 2, wherein:
the apparatus further comprises a certificate generation module;
the control module is connected with the certificate generation module and is used for generating verification certificates and detection certificates based on the error values.
4. The vehicle network interactive charging pile bidirectional metering verification device according to claim 3, wherein:
the device also comprises a storage module;
the control module is connected with the storage module;
the storage module is used for storing the device.
5. The vehicle network interactive charging pile bidirectional metering verification device according to claim 4, wherein:
the device also comprises an intelligent screen;
the control module is connected with the intelligent screen;
the intelligent screen is used for displaying the error value, the verification certificate and the detection certificate.
6. The vehicle network interactive charging pile bidirectional metering verification device according to claim 5, wherein:
the device also comprises a main power supply module and a standby power supply module;
the main power supply module is used for converting 220V alternating current voltage into 12V direct current voltage and supplying power to the verification device;
the standby power module adopts a lithium battery.
7. A bidirectional metering verification method for a vehicle-network interactive charging pile is characterized by comprising the following steps of:
after the charging pile to be verified is accessed through the first interface and the electric automobile is accessed through the second interface:
the communication module monitors communication between the charging pile to be verified and the electric automobile on the communication loop, after handshake is achieved between the charging pile to be verified and the electric automobile, the communication loop is disconnected, a charging demand communication message sent by the electric automobile is received in real time through a second CAN interface, charging current and charging direction of the charging demand are analyzed, a current smaller than the charging current is set as first verification current based on the charging current, and the first verification current, the charging direction and preset verification charging time are sent to the charging pile to be verified through the first CAN interface in the form of communication messages;
after the communication loop is disconnected, the communication module receives the communication message sent by the charging pile in real time through the first CAN interface, and analyzes the communication message sent by the charging pile and received in real time through the first CAN interface in real time and forwards the communication message to the electric automobile through the second CAN interface in real time;
when the communication module analyzes that charging is started from a communication message sent by a charging pile and received in real time through a first CAN interface, a first pulse signal acquisition instruction is sent to the control module;
after receiving a first electric pulse signal acquisition instruction, the control module controls the acquisition module to acquire an electric pulse signal currently output by an electric energy meter of the charging pile to be detected and a standard electric energy meter currently output which are connected to the first interface, and sequentially records a first electric pulse signal p1 and a second electric pulse signal p2;
when the communication module analyzes that charging is stopped from a communication message sent by the charging pile and received in real time through the first CAN interface, a second pulse signal acquisition instruction is sent to the control module;
after receiving the second electric pulse signal acquisition instruction, the control module again controls the acquisition module to acquire an electric pulse signal currently output by the electric energy meter of the charging pile to be detected and an electric pulse signal currently output by the standard electric energy meter, which are connected to the first interface, and sequentially records a third electric pulse signal p1 'and a fourth electric pulse signal p2';
after receiving the first electric pulse signal p1, the second electric pulse signal p2, the third electric pulse signal p1' and the fourth electric pulse signal p2', the control module calculates a charging electric energy value recorded by the electric energy meter of the charging pile to be detected according to the first electric pulse signal p1 and the third electric pulse signal p1', and records the charging electric energy value as E1; according to the second electric pulse signal p2 and the fourth electric pulse signal p2', calculating the charging electric energy value recorded by the standard electric energy meterDesignated as E2; bringing E1, E2 into the formulaAnd calculating to obtain the metering error r of the charging pile to be detected.
8. The vehicle network interactive charging pile bidirectional metering verification method according to claim 7, wherein the method comprises the following steps:
when the second interface is idle, and the verification resistor is connected to the verification resistor connecting interface:
the communication module simulates the electric automobile to handshake with the charging pile to be verified, and after handshake is achieved, the communication loop is disconnected, and the preset second verification current, the preset charging direction and the preset verification charging time are sent to the charging pile to be verified in the form of communication messages through the first CAN interface.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140035530A1 (en) * | 2011-04-18 | 2014-02-06 | Zehua Shao | Electric automobile pwm rectification and converting voltage/current pulse charging system |
| CN104321947A (en) * | 2012-05-18 | 2015-01-28 | 特斯拉汽车公司 | Charge rate optimization |
| WO2015153911A1 (en) * | 2014-04-02 | 2015-10-08 | Tesla Motors, Inc. | Functional redundancy of communications and data transmission in energy storage system |
| US20150346288A1 (en) * | 2014-05-27 | 2015-12-03 | Power Measurements, LLC | Devices and methods for testing the energy measurement accuracy, billing accuracy, functional performance and safety of electric vehicle charging stations |
| CN108427092A (en) * | 2018-03-05 | 2018-08-21 | 江苏大学 | A kind of off-board DC charging motor direct current energy meter in-line calibration System and method for of electric vehicle |
| CN110803051A (en) * | 2019-11-28 | 2020-02-18 | 南京米特能源科技有限公司 | Energy storage type charging pile and charging system |
| CN112305346A (en) * | 2020-10-20 | 2021-02-02 | 保定新云达电力设备有限责任公司 | Portable alternating-current charging pile field detection device and detection method thereof |
| CN214011489U (en) * | 2020-12-18 | 2021-08-20 | 昆明理工光智检测科技有限公司 | Electric automobile alternating-current charging stake metering device remote monitoring system |
| CN115932454A (en) * | 2022-12-31 | 2023-04-07 | 国网上海市电力公司 | Portable direct current fills electric pile testing arrangement |
| KR20230056185A (en) * | 2021-10-20 | 2023-04-27 | 재단법인 한국기계전기전자시험연구원 | Multi-channel verification apparatus for charger of electric vehicle and untact verification system therewith |
-
2024
- 2024-01-17 CN CN202410065408.0A patent/CN117590139B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140035530A1 (en) * | 2011-04-18 | 2014-02-06 | Zehua Shao | Electric automobile pwm rectification and converting voltage/current pulse charging system |
| CN104321947A (en) * | 2012-05-18 | 2015-01-28 | 特斯拉汽车公司 | Charge rate optimization |
| WO2015153911A1 (en) * | 2014-04-02 | 2015-10-08 | Tesla Motors, Inc. | Functional redundancy of communications and data transmission in energy storage system |
| US20150346288A1 (en) * | 2014-05-27 | 2015-12-03 | Power Measurements, LLC | Devices and methods for testing the energy measurement accuracy, billing accuracy, functional performance and safety of electric vehicle charging stations |
| CN108427092A (en) * | 2018-03-05 | 2018-08-21 | 江苏大学 | A kind of off-board DC charging motor direct current energy meter in-line calibration System and method for of electric vehicle |
| CN110803051A (en) * | 2019-11-28 | 2020-02-18 | 南京米特能源科技有限公司 | Energy storage type charging pile and charging system |
| CN112305346A (en) * | 2020-10-20 | 2021-02-02 | 保定新云达电力设备有限责任公司 | Portable alternating-current charging pile field detection device and detection method thereof |
| CN214011489U (en) * | 2020-12-18 | 2021-08-20 | 昆明理工光智检测科技有限公司 | Electric automobile alternating-current charging stake metering device remote monitoring system |
| KR20230056185A (en) * | 2021-10-20 | 2023-04-27 | 재단법인 한국기계전기전자시험연구원 | Multi-channel verification apparatus for charger of electric vehicle and untact verification system therewith |
| CN115932454A (en) * | 2022-12-31 | 2023-04-07 | 国网上海市电力公司 | Portable direct current fills electric pile testing arrangement |
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